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ARM: S5P64X0: Update Clock for S5P6440 and S5P6450

Browse Source 
This patch updates regarding clock files for supporting S5P6440 and
S5P6450 with one kernel image. The mach-s5p64x0/clock.c is for common
of them and there are specific clock files for each SoCs.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Kukjin Kim 2010-09-01 15:35:30 +09:00
parent a2e0d6249f
commit 3109e55099
10 changed files with 1674 additions and 979 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

846
arch/arm/mach-s5p6440/clock.c
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@ -1,846 +0,0 @@
/* linux/arch/arm/mach-s5p6440/clock.c
*
* Copyright (c) 2009 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5P6440 - Clock support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/sysdev.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <plat/cpu-freq.h>
#include <mach/regs-clock.h>
#include <plat/clock.h>
#include <plat/cpu.h>
#include <plat/clock-clksrc.h>
#include <plat/s5p-clock.h>
#include <plat/pll.h>
#include <plat/s5p6440.h>
/* APLL Mux output clock */
static struct clksrc_clk clk_mout_apll = {
.clk = {
.name = "mout_apll",
.id = -1,
},
.sources = &clk_src_apll,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 0, .size = 1 },
};
static int s5p6440_epll_enable(struct clk *clk, int enable)
{
unsigned int ctrlbit = clk->ctrlbit;
unsigned int epll_con = __raw_readl(S5P_EPLL_CON) & ~ctrlbit;
if (enable)
__raw_writel(epll_con | ctrlbit, S5P_EPLL_CON);
else
__raw_writel(epll_con, S5P_EPLL_CON);
return 0;
}
static unsigned long s5p6440_epll_get_rate(struct clk *clk)
{
return clk->rate;
}
static u32 epll_div[][5] = {
{ 36000000, 0, 48, 1, 4 },
{ 48000000, 0, 32, 1, 3 },
{ 60000000, 0, 40, 1, 3 },
{ 72000000, 0, 48, 1, 3 },
{ 84000000, 0, 28, 1, 2 },
{ 96000000, 0, 32, 1, 2 },
{ 32768000, 45264, 43, 1, 4 },
{ 45158000, 6903, 30, 1, 3 },
{ 49152000, 50332, 32, 1, 3 },
{ 67738000, 10398, 45, 1, 3 },
{ 73728000, 9961, 49, 1, 3 }
};
static int s5p6440_epll_set_rate(struct clk *clk, unsigned long rate)
{
unsigned int epll_con, epll_con_k;
unsigned int i;
if (clk->rate == rate) /* Return if nothing changed */
return 0;
epll_con = __raw_readl(S5P_EPLL_CON);
epll_con_k = __raw_readl(S5P_EPLL_CON_K);
epll_con_k &= ~(PLL90XX_KDIV_MASK);
epll_con &= ~(PLL90XX_MDIV_MASK | PLL90XX_PDIV_MASK | PLL90XX_SDIV_MASK);
for (i = 0; i < ARRAY_SIZE(epll_div); i++) {
if (epll_div[i][0] == rate) {
epll_con_k |= (epll_div[i][1] << PLL90XX_KDIV_SHIFT);
epll_con |= (epll_div[i][2] << PLL90XX_MDIV_SHIFT) |
(epll_div[i][3] << PLL90XX_PDIV_SHIFT) |
(epll_div[i][4] << PLL90XX_SDIV_SHIFT);
break;
}
}
if (i == ARRAY_SIZE(epll_div)) {
printk(KERN_ERR "%s: Invalid Clock EPLL Frequency\n", __func__);
return -EINVAL;
}
__raw_writel(epll_con, S5P_EPLL_CON);
__raw_writel(epll_con_k, S5P_EPLL_CON_K);
clk->rate = rate;
return 0;
}
static struct clk_ops s5p6440_epll_ops = {
.get_rate = s5p6440_epll_get_rate,
.set_rate = s5p6440_epll_set_rate,
};
static struct clksrc_clk clk_mout_epll = {
.clk = {
.name = "mout_epll",
.id = -1,
},
.sources = &clk_src_epll,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 2, .size = 1 },
};
static struct clksrc_clk clk_mout_mpll = {
.clk = {
.name = "mout_mpll",
.id = -1,
},
.sources = &clk_src_mpll,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 1, .size = 1 },
};
enum perf_level {
L0 = 532*1000,
L1 = 266*1000,
L2 = 133*1000,
};
static const u32 clock_table[][3] = {
/*{ARM_CLK, DIVarm, DIVhclk}*/
{L0 * 1000, (0 << ARM_DIV_RATIO_SHIFT), (3 << S5P_CLKDIV0_HCLK_SHIFT)},
{L1 * 1000, (1 << ARM_DIV_RATIO_SHIFT), (1 << S5P_CLKDIV0_HCLK_SHIFT)},
{L2 * 1000, (3 << ARM_DIV_RATIO_SHIFT), (0 << S5P_CLKDIV0_HCLK_SHIFT)},
};
static unsigned long s5p6440_armclk_get_rate(struct clk *clk)
{
unsigned long rate = clk_get_rate(clk->parent);
u32 clkdiv;
/* divisor mask starts at bit0, so no need to shift */
clkdiv = __raw_readl(ARM_CLK_DIV) & ARM_DIV_MASK;
return rate / (clkdiv + 1);
}
static unsigned long s5p6440_armclk_round_rate(struct clk *clk,
unsigned long rate)
{
u32 iter;
for (iter = 1 ; iter < ARRAY_SIZE(clock_table) ; iter++) {
if (rate > clock_table[iter][0])
return clock_table[iter-1][0];
}
return clock_table[ARRAY_SIZE(clock_table) - 1][0];
}
static int s5p6440_armclk_set_rate(struct clk *clk, unsigned long rate)
{
u32 round_tmp;
u32 iter;
u32 clk_div0_tmp;
u32 cur_rate = clk->ops->get_rate(clk);
unsigned long flags;
round_tmp = clk->ops->round_rate(clk, rate);
if (round_tmp == cur_rate)
return 0;
for (iter = 0 ; iter < ARRAY_SIZE(clock_table) ; iter++) {
if (round_tmp == clock_table[iter][0])
break;
}
if (iter >= ARRAY_SIZE(clock_table))
iter = ARRAY_SIZE(clock_table) - 1;
local_irq_save(flags);
if (cur_rate > round_tmp) {
/* Frequency Down */
clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK);
clk_div0_tmp |= clock_table[iter][1];
__raw_writel(clk_div0_tmp, ARM_CLK_DIV);
clk_div0_tmp = __raw_readl(ARM_CLK_DIV) &
~(S5P_CLKDIV0_HCLK_MASK);
clk_div0_tmp |= clock_table[iter][2];
__raw_writel(clk_div0_tmp, ARM_CLK_DIV);
} else {
/* Frequency Up */
clk_div0_tmp = __raw_readl(ARM_CLK_DIV) &
~(S5P_CLKDIV0_HCLK_MASK);
clk_div0_tmp |= clock_table[iter][2];
__raw_writel(clk_div0_tmp, ARM_CLK_DIV);
clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK);
clk_div0_tmp |= clock_table[iter][1];
__raw_writel(clk_div0_tmp, ARM_CLK_DIV);
}
local_irq_restore(flags);
clk->rate = clock_table[iter][0];
return 0;
}
static struct clk_ops s5p6440_clkarm_ops = {
.get_rate = s5p6440_armclk_get_rate,
.set_rate = s5p6440_armclk_set_rate,
.round_rate = s5p6440_armclk_round_rate,
};
static struct clksrc_clk clk_armclk = {
.clk = {
.name = "armclk",
.id = 1,
.parent = &clk_mout_apll.clk,
.ops = &s5p6440_clkarm_ops,
},
.reg_div = { .reg = S5P_CLK_DIV0, .shift = 0, .size = 4 },
};
static struct clksrc_clk clk_dout_mpll = {
.clk = {
.name = "dout_mpll",
.id = -1,
.parent = &clk_mout_mpll.clk,
},
.reg_div = { .reg = S5P_CLK_DIV0, .shift = 4, .size = 1 },
};
static struct clksrc_clk clk_hclk = {
.clk = {
.name = "clk_hclk",
.id = -1,
.parent = &clk_armclk.clk,
},
.reg_div = { .reg = S5P_CLK_DIV0, .shift = 8, .size = 4 },
};
static struct clksrc_clk clk_pclk = {
.clk = {
.name = "clk_pclk",
.id = -1,
.parent = &clk_hclk.clk,
},
.reg_div = { .reg = S5P_CLK_DIV0, .shift = 12, .size = 4 },
};
static struct clk *clkset_hclklow_list[] = {
&clk_mout_apll.clk,
&clk_mout_mpll.clk,
};
static struct clksrc_sources clkset_hclklow = {
.sources = clkset_hclklow_list,
.nr_sources = ARRAY_SIZE(clkset_hclklow_list),
};
static struct clksrc_clk clk_hclk_low = {
.clk = {
.name = "hclk_low",
.id = -1,
},
.sources = &clkset_hclklow,
.reg_src = { .reg = S5P_SYS_OTHERS, .shift = 6, .size = 1 },
.reg_div = { .reg = S5P_CLK_DIV3, .shift = 8, .size = 4 },
};
static struct clksrc_clk clk_pclk_low = {
.clk = {
.name = "pclk_low",
.id = -1,
.parent = &clk_hclk_low.clk,
},
.reg_div = { .reg = S5P_CLK_DIV3, .shift = 12, .size = 4 },
};
int s5p6440_clk48m_ctrl(struct clk *clk, int enable)
{
unsigned long flags;
u32 val;
/* can't rely on clock lock, this register has other usages */
local_irq_save(flags);
val = __raw_readl(S5P_OTHERS);
if (enable)
val |= S5P_OTHERS_USB_SIG_MASK;
else
val &= ~S5P_OTHERS_USB_SIG_MASK;
__raw_writel(val, S5P_OTHERS);
local_irq_restore(flags);
return 0;
}
static int s5p6440_pclk_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_PCLK, clk, enable);
}
static int s5p6440_hclk0_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_HCLK0, clk, enable);
}
static int s5p6440_hclk1_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_HCLK1, clk, enable);
}
static int s5p6440_sclk_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_SCLK0, clk, enable);
}
static int s5p6440_sclk1_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_SCLK1, clk, enable);
}
static int s5p6440_mem_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P_CLK_GATE_MEM0, clk, enable);
}
/*
* The following clocks will be disabled during clock initialization. It is
* recommended to keep the following clocks disabled until the driver requests
* for enabling the clock.
*/
static struct clk init_clocks_disable[] = {
{
.name = "nand",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_mem_ctrl,
.ctrlbit = S5P_CLKCON_MEM0_HCLK_NFCON,
}, {
.name = "adc",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_TSADC,
}, {
.name = "i2c",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_IIC0,
}, {
.name = "i2s_v40",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_IIS2,
}, {
.name = "spi",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_SPI0,
}, {
.name = "spi",
.id = 1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_SPI1,
}, {
.name = "sclk_spi_48",
.id = 0,
.parent = &clk_48m,
.enable = s5p6440_sclk_ctrl,
.ctrlbit = S5P_CLKCON_SCLK0_SPI0_48,
}, {
.name = "sclk_spi_48",
.id = 1,
.parent = &clk_48m,
.enable = s5p6440_sclk_ctrl,
.ctrlbit = S5P_CLKCON_SCLK0_SPI1_48,
}, {
.name = "mmc_48m",
.id = 0,
.parent = &clk_48m,
.enable = s5p6440_sclk_ctrl,
.ctrlbit = S5P_CLKCON_SCLK0_MMC0_48,
}, {
.name = "mmc_48m",
.id = 1,
.parent = &clk_48m,
.enable = s5p6440_sclk_ctrl,
.ctrlbit = S5P_CLKCON_SCLK0_MMC1_48,
}, {
.name = "mmc_48m",
.id = 2,
.parent = &clk_48m,
.enable = s5p6440_sclk_ctrl,
.ctrlbit = S5P_CLKCON_SCLK0_MMC2_48,
}, {
.name = "otg",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_USB
}, {
.name = "post",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_POST0
}, {
.name = "lcd",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk1_ctrl,
.ctrlbit = S5P_CLKCON_HCLK1_DISPCON,
}, {
.name = "hsmmc",
.id = 0,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC0,
}, {
.name = "hsmmc",
.id = 1,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC1,
}, {
.name = "hsmmc",
.id = 2,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = S5P_CLKCON_HCLK0_HSMMC2,
}, {
.name = "rtc",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_RTC,
}, {
.name = "watchdog",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_WDT,
}, {
.name = "timers",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_PWM,
}, {
.name = "hclk_fimgvg",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk1_ctrl,
.ctrlbit = (1 << 2),
}, {
.name = "tsi",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk1_ctrl,
.ctrlbit = (1 << 0),
}, {
.name = "pclk_fimgvg",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 31),
}, {
.name = "dmc0",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 30),
}, {
.name = "etm",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 29),
}, {
.name = "dsim",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 28),
}, {
.name = "gps",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 25),
}, {
.name = "pcm",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = (1 << 8),
}, {
.name = "irom",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 25),
}, {
.name = "dma",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 12),
}, {
.name = "2d",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 8),
},
};
/*
* The following clocks will be enabled during clock initialization.
*/
static struct clk init_clocks[] = {
{
.name = "gpio",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_GPIO,
}, {
.name = "uart",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART0,
}, {
.name = "uart",
.id = 1,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART1,
}, {
.name = "uart",
.id = 2,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART2,
}, {
.name = "uart",
.id = 3,
.parent = &clk_pclk_low.clk,
.enable = s5p6440_pclk_ctrl,
.ctrlbit = S5P_CLKCON_PCLK_UART3,
}, {
.name = "mem",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 21),
}, {
.name = "intc",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p6440_hclk0_ctrl,
.ctrlbit = (1 << 1),
},
};
static struct clk clk_iis_cd_v40 = {
.name = "iis_cdclk_v40",
.id = -1,
};
static struct clk clk_pcm_cd = {
.name = "pcm_cdclk",
.id = -1,
};
static struct clk *clkset_group1_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll.clk,
&clk_fin_epll,
};
static struct clksrc_sources clkset_group1 = {
.sources = clkset_group1_list,
.nr_sources = ARRAY_SIZE(clkset_group1_list),
};
static struct clk *clkset_uart_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll.clk,
};
static struct clksrc_sources clkset_uart = {
.sources = clkset_uart_list,
.nr_sources = ARRAY_SIZE(clkset_uart_list),
};
static struct clk *clkset_audio_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll.clk,
&clk_fin_epll,
&clk_iis_cd_v40,
&clk_pcm_cd,
};
static struct clksrc_sources clkset_audio = {
.sources = clkset_audio_list,
.nr_sources = ARRAY_SIZE(clkset_audio_list),
};
static struct clksrc_clk clksrcs[] = {
{
.clk = {
.name = "mmc_bus",
.id = 0,
.ctrlbit = S5P_CLKCON_SCLK0_MMC0,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 18, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "mmc_bus",
.id = 1,
.ctrlbit = S5P_CLKCON_SCLK0_MMC1,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 20, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "mmc_bus",
.id = 2,
.ctrlbit = S5P_CLKCON_SCLK0_MMC2,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 22, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 8, .size = 4 },
}, {
.clk = {
.name = "uclk1",
.id = -1,
.ctrlbit = S5P_CLKCON_SCLK0_UART,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_uart,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 13, .size = 1 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 16, .size = 4 },
}, {
.clk = {
.name = "spi_epll",
.id = 0,
.ctrlbit = S5P_CLKCON_SCLK0_SPI0,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 14, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "spi_epll",
.id = 1,
.ctrlbit = S5P_CLKCON_SCLK0_SPI1,
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 16, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "sclk_post",
.id = -1,
.ctrlbit = (1 << 10),
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC0, .shift = 26, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV1, .shift = 12, .size = 4 },
}, {
.clk = {
.name = "sclk_dispcon",
.id = -1,
.ctrlbit = (1 << 1),
.enable = s5p6440_sclk1_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC1, .shift = 4, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV3, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "sclk_fimgvg",
.id = -1,
.ctrlbit = (1 << 2),
.enable = s5p6440_sclk1_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P_CLK_SRC1, .shift = 8, .size = 2 },
.reg_div = { .reg = S5P_CLK_DIV3, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "sclk_audio2",
.id = -1,
.ctrlbit = (1 << 11),
.enable = s5p6440_sclk_ctrl,
},
.sources = &clkset_audio,
.reg_src = { .reg = S5P_CLK_SRC1, .shift = 0, .size = 3 },
.reg_div = { .reg = S5P_CLK_DIV2, .shift = 24, .size = 4 },
},
};
/* Clock initialisation code */
static struct clksrc_clk *sysclks[] = {
&clk_mout_apll,
&clk_mout_epll,
&clk_mout_mpll,
&clk_dout_mpll,
&clk_armclk,
&clk_hclk,
&clk_pclk,
&clk_hclk_low,
&clk_pclk_low,
};
void __init_or_cpufreq s5p6440_setup_clocks(void)
{
struct clk *xtal_clk;
unsigned long xtal;
unsigned long fclk;
unsigned long hclk;
unsigned long hclk_low;
unsigned long pclk;
unsigned long pclk_low;
unsigned long epll;
unsigned long apll;
unsigned long mpll;
unsigned int ptr;
/* Set S5P6440 functions for clk_fout_epll */
clk_fout_epll.enable = s5p6440_epll_enable;
clk_fout_epll.ops = &s5p6440_epll_ops;
clk_48m.enable = s5p6440_clk48m_ctrl;
xtal_clk = clk_get(NULL, "ext_xtal");
BUG_ON(IS_ERR(xtal_clk));
xtal = clk_get_rate(xtal_clk);
clk_put(xtal_clk);
epll = s5p_get_pll90xx(xtal, __raw_readl(S5P_EPLL_CON),
__raw_readl(S5P_EPLL_CON_K));
mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON), pll_4502);
apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON), pll_4502);
clk_fout_mpll.rate = mpll;
clk_fout_epll.rate = epll;
clk_fout_apll.rate = apll;
printk(KERN_INFO "S5P6440: PLL settings, A=%ld.%ldMHz, M=%ld.%ldMHz," \
" E=%ld.%ldMHz\n",
print_mhz(apll), print_mhz(mpll), print_mhz(epll));
fclk = clk_get_rate(&clk_armclk.clk);
hclk = clk_get_rate(&clk_hclk.clk);
pclk = clk_get_rate(&clk_pclk.clk);
hclk_low = clk_get_rate(&clk_hclk_low.clk);
pclk_low = clk_get_rate(&clk_pclk_low.clk);
printk(KERN_INFO "S5P6440: HCLK=%ld.%ldMHz, HCLK_LOW=%ld.%ldMHz," \
" PCLK=%ld.%ldMHz, PCLK_LOW=%ld.%ldMHz\n",
print_mhz(hclk), print_mhz(hclk_low),
print_mhz(pclk), print_mhz(pclk_low));
clk_f.rate = fclk;
clk_h.rate = hclk;
clk_p.rate = pclk;
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
s3c_set_clksrc(&clksrcs[ptr], true);
}
static struct clk *clks[] __initdata = {
&clk_ext,
&clk_iis_cd_v40,
&clk_pcm_cd,
};
void __init s5p6440_register_clocks(void)
{
struct clk *clkp;
int ret;
int ptr;
ret = s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));
if (ret > 0)
printk(KERN_ERR "Failed to register %u clocks\n", ret);
for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
s3c_register_clksrc(sysclks[ptr], 1);
s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
clkp = init_clocks_disable;
for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) {
ret = s3c24xx_register_clock(clkp);
if (ret < 0) {
printk(KERN_ERR "Failed to register clock %s (%d)\n",
clkp->name, ret);
}
(clkp->enable)(clkp, 0);
}
s3c_pwmclk_init();
}

130
arch/arm/mach-s5p6440/include/mach/regs-clock.h
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@ -1,130 +0,0 @@
/* linux/arch/arm/mach-s5p6440/include/mach/regs-clock.h
*
* Copyright (c) 2009 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5P6440 - Clock register definitions
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_REGS_CLOCK_H
#define __ASM_ARCH_REGS_CLOCK_H __FILE__
#include <mach/map.h>
#define S5P_CLKREG(x) (S3C_VA_SYS + (x))
#define S5P_APLL_LOCK S5P_CLKREG(0x00)
#define S5P_MPLL_LOCK S5P_CLKREG(0x04)
#define S5P_EPLL_LOCK S5P_CLKREG(0x08)
#define S5P_APLL_CON S5P_CLKREG(0x0C)
#define S5P_MPLL_CON S5P_CLKREG(0x10)
#define S5P_EPLL_CON S5P_CLKREG(0x14)
#define S5P_EPLL_CON_K S5P_CLKREG(0x18)
#define S5P_CLK_SRC0 S5P_CLKREG(0x1C)
#define S5P_CLK_DIV0 S5P_CLKREG(0x20)
#define S5P_CLK_DIV1 S5P_CLKREG(0x24)
#define S5P_CLK_DIV2 S5P_CLKREG(0x28)
#define S5P_CLK_OUT S5P_CLKREG(0x2C)
#define S5P_CLK_GATE_HCLK0 S5P_CLKREG(0x30)
#define S5P_CLK_GATE_PCLK S5P_CLKREG(0x34)
#define S5P_CLK_GATE_SCLK0 S5P_CLKREG(0x38)
#define S5P_CLK_GATE_MEM0 S5P_CLKREG(0x3C)
#define S5P_CLK_DIV3 S5P_CLKREG(0x40)
#define S5P_CLK_GATE_HCLK1 S5P_CLKREG(0x44)
#define S5P_CLK_GATE_SCLK1 S5P_CLKREG(0x48)
#define S5P_AHB_CON0 S5P_CLKREG(0x100)
#define S5P_CLK_SRC1 S5P_CLKREG(0x10C)
#define S5P_SWRESET S5P_CLKREG(0x114)
#define S5P_SYS_ID S5P_CLKREG(0x118)
#define S5P_SYS_OTHERS S5P_CLKREG(0x11C)
#define S5P_MEM_CFG_STAT S5P_CLKREG(0x12C)
#define S5P_PWR_CFG S5P_CLKREG(0x804)
#define S5P_EINT_WAKEUP_MASK S5P_CLKREG(0x808)
#define S5P_NORMAL_CFG S5P_CLKREG(0x810)
#define S5P_STOP_CFG S5P_CLKREG(0x814)
#define S5P_SLEEP_CFG S5P_CLKREG(0x818)
#define S5P_OSC_FREQ S5P_CLKREG(0x820)
#define S5P_OSC_STABLE S5P_CLKREG(0x824)
#define S5P_PWR_STABLE S5P_CLKREG(0x828)
#define S5P_MTC_STABLE S5P_CLKREG(0x830)
#define S5P_OTHERS S5P_CLKREG(0x900)
#define S5P_RST_STAT S5P_CLKREG(0x904)
#define S5P_WAKEUP_STAT S5P_CLKREG(0x908)
#define S5P_SLPEN S5P_CLKREG(0x930)
#define S5P_INFORM0 S5P_CLKREG(0xA00)
#define S5P_INFORM1 S5P_CLKREG(0xA04)
#define S5P_INFORM2 S5P_CLKREG(0xA08)
#define S5P_INFORM3 S5P_CLKREG(0xA0C)
/* CLKDIV0 */
#define S5P_CLKDIV0_PCLK_MASK (0xf << 12)
#define S5P_CLKDIV0_PCLK_SHIFT (12)
#define S5P_CLKDIV0_HCLK_MASK (0xf << 8)
#define S5P_CLKDIV0_HCLK_SHIFT (8)
#define S5P_CLKDIV0_MPLL_MASK (0x1 << 4)
#define S5P_CLKDIV0_ARM_MASK (0xf << 0)
#define S5P_CLKDIV0_ARM_SHIFT (0)
/* CLKDIV3 */
#define S5P_CLKDIV3_PCLK_LOW_MASK (0xf << 12)
#define S5P_CLKDIV3_PCLK_LOW_SHIFT (12)
#define S5P_CLKDIV3_HCLK_LOW_MASK (0xf << 8)
#define S5P_CLKDIV3_HCLK_LOW_SHIFT (8)
/* HCLK0 GATE Registers */
#define S5P_CLKCON_HCLK0_USB (1<<20)
#define S5P_CLKCON_HCLK0_HSMMC2 (1<<19)
#define S5P_CLKCON_HCLK0_HSMMC1 (1<<18)
#define S5P_CLKCON_HCLK0_HSMMC0 (1<<17)
#define S5P_CLKCON_HCLK0_POST0 (1<<5)
/* HCLK1 GATE Registers */
#define S5P_CLKCON_HCLK1_DISPCON (1<<1)
/* PCLK GATE Registers */
#define S5P_CLKCON_PCLK_IIS2 (1<<26)
#define S5P_CLKCON_PCLK_SPI1 (1<<22)
#define S5P_CLKCON_PCLK_SPI0 (1<<21)
#define S5P_CLKCON_PCLK_GPIO (1<<18)
#define S5P_CLKCON_PCLK_IIC0 (1<<17)
#define S5P_CLKCON_PCLK_TSADC (1<<12)
#define S5P_CLKCON_PCLK_PWM (1<<7)
#define S5P_CLKCON_PCLK_RTC (1<<6)
#define S5P_CLKCON_PCLK_WDT (1<<5)
#define S5P_CLKCON_PCLK_UART3 (1<<4)
#define S5P_CLKCON_PCLK_UART2 (1<<3)
#define S5P_CLKCON_PCLK_UART1 (1<<2)
#define S5P_CLKCON_PCLK_UART0 (1<<1)
/* SCLK0 GATE Registers */
#define S5P_CLKCON_SCLK0_MMC2_48 (1<<29)
#define S5P_CLKCON_SCLK0_MMC1_48 (1<<28)
#define S5P_CLKCON_SCLK0_MMC0_48 (1<<27)
#define S5P_CLKCON_SCLK0_MMC2 (1<<26)
#define S5P_CLKCON_SCLK0_MMC1 (1<<25)
#define S5P_CLKCON_SCLK0_MMC0 (1<<24)
#define S5P_CLKCON_SCLK0_SPI1_48 (1<<23)
#define S5P_CLKCON_SCLK0_SPI0_48 (1<<22)
#define S5P_CLKCON_SCLK0_SPI1 (1<<21)
#define S5P_CLKCON_SCLK0_SPI0 (1<<20)
#define S5P_CLKCON_SCLK0_UART (1<<5)
/* SCLK1 GATE Registers */
/* MEM0 GATE Registers */
#define S5P_CLKCON_MEM0_HCLK_NFCON (1<<2)
/*OTHERS Resgister */
#define S5P_OTHERS_USB_SIG_MASK (1<<16)
#define S5P_OTHERS_HCLK_LOW_SEL_MPLL (1<<6)
/* Compatibility defines */
#define ARM_CLK_DIV S5P_CLK_DIV0
#define ARM_DIV_RATIO_SHIFT 0
#define ARM_DIV_MASK (0xf << ARM_DIV_RATIO_SHIFT)
#endif /* __ASM_ARCH_REGS_CLOCK_H */

626
arch/arm/mach-s5p64x0/clock-s5p6440.c Normal file
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/* linux/arch/arm/mach-s5p64x0/clock-s5p6440.c
*
* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* S5P6440 - Clock support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/sysdev.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <mach/s5p64x0-clock.h>
#include <plat/cpu-freq.h>
#include <plat/clock.h>
#include <plat/cpu.h>
#include <plat/pll.h>
#include <plat/s5p-clock.h>
#include <plat/clock-clksrc.h>
#include <plat/s5p6440.h>
static u32 epll_div[][5] = {
{ 36000000, 0, 48, 1, 4 },
{ 48000000, 0, 32, 1, 3 },
{ 60000000, 0, 40, 1, 3 },
{ 72000000, 0, 48, 1, 3 },
{ 84000000, 0, 28, 1, 2 },
{ 96000000, 0, 32, 1, 2 },
{ 32768000, 45264, 43, 1, 4 },
{ 45158000, 6903, 30, 1, 3 },
{ 49152000, 50332, 32, 1, 3 },
{ 67738000, 10398, 45, 1, 3 },
{ 73728000, 9961, 49, 1, 3 }
};
static int s5p6440_epll_set_rate(struct clk *clk, unsigned long rate)
{
unsigned int epll_con, epll_con_k;
unsigned int i;
if (clk->rate == rate) /* Return if nothing changed */
return 0;
epll_con = __raw_readl(S5P64X0_EPLL_CON);
epll_con_k = __raw_readl(S5P64X0_EPLL_CON_K);
epll_con_k &= ~(PLL90XX_KDIV_MASK);
epll_con &= ~(PLL90XX_MDIV_MASK | PLL90XX_PDIV_MASK | PLL90XX_SDIV_MASK);
for (i = 0; i < ARRAY_SIZE(epll_div); i++) {
if (epll_div[i][0] == rate) {
epll_con_k |= (epll_div[i][1] << PLL90XX_KDIV_SHIFT);
epll_con |= (epll_div[i][2] << PLL90XX_MDIV_SHIFT) |
(epll_div[i][3] << PLL90XX_PDIV_SHIFT) |
(epll_div[i][4] << PLL90XX_SDIV_SHIFT);
break;
}
}
if (i == ARRAY_SIZE(epll_div)) {
printk(KERN_ERR "%s: Invalid Clock EPLL Frequency\n", __func__);
return -EINVAL;
}
__raw_writel(epll_con, S5P64X0_EPLL_CON);
__raw_writel(epll_con_k, S5P64X0_EPLL_CON_K);
clk->rate = rate;
return 0;
}
static struct clk_ops s5p6440_epll_ops = {
.get_rate = s5p64x0_epll_get_rate,
.set_rate = s5p6440_epll_set_rate,
};
static struct clksrc_clk clk_hclk = {
.clk = {
.name = "clk_hclk",
.id = -1,
.parent = &clk_armclk.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV0, .shift = 8, .size = 4 },
};
static struct clksrc_clk clk_pclk = {
.clk = {
.name = "clk_pclk",
.id = -1,
.parent = &clk_hclk.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV0, .shift = 12, .size = 4 },
};
static struct clksrc_clk clk_hclk_low = {
.clk = {
.name = "clk_hclk_low",
.id = -1,
},
.sources = &clkset_hclk_low,
.reg_src = { .reg = S5P64X0_SYS_OTHERS, .shift = 6, .size = 1 },
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 8, .size = 4 },
};
static struct clksrc_clk clk_pclk_low = {
.clk = {
.name = "clk_pclk_low",
.id = -1,
.parent = &clk_hclk_low.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 12, .size = 4 },
};
/*
* The following clocks will be disabled during clock initialization. It is
* recommended to keep the following clocks disabled until the driver requests
* for enabling the clock.
*/
static struct clk init_clocks_disable[] = {
{
.name = "nand",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p64x0_mem_ctrl,
.ctrlbit = (1 << 2),
}, {
.name = "post",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 5)
}, {
.name = "2d",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 8),
}, {
.name = "hsmmc",
.id = 0,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 17),
}, {
.name = "hsmmc",
.id = 1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 18),
}, {
.name = "hsmmc",
.id = 2,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 19),
}, {
.name = "otg",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 20)
}, {
.name = "irom",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 25),
}, {
.name = "lcd",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk1_ctrl,
.ctrlbit = (1 << 1),
}, {
.name = "hclk_fimgvg",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p64x0_hclk1_ctrl,
.ctrlbit = (1 << 2),
}, {
.name = "tsi",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk1_ctrl,
.ctrlbit = (1 << 0),
}, {
.name = "watchdog",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 5),
}, {
.name = "rtc",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 6),
}, {
.name = "timers",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 7),
}, {
.name = "pcm",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 8),
}, {
.name = "adc",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 12),
}, {
.name = "i2c",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 17),
}, {
.name = "spi",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 21),
}, {
.name = "spi",
.id = 1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 22),
}, {
.name = "gps",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 25),
}, {
.name = "i2s_v40",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 26),
}, {
.name = "dsim",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 28),
}, {
.name = "etm",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 29),
}, {
.name = "dmc0",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 30),
}, {
.name = "pclk_fimgvg",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 31),
}, {
.name = "sclk_spi_48",
.id = 0,
.parent = &clk_48m,
.enable = s5p64x0_sclk_ctrl,
.ctrlbit = (1 << 22),
}, {
.name = "sclk_spi_48",
.id = 1,
.parent = &clk_48m,
.enable = s5p64x0_sclk_ctrl,
.ctrlbit = (1 << 23),
}, {
.name = "mmc_48m",
.id = 0,
.parent = &clk_48m,
.enable = s5p64x0_sclk_ctrl,
.ctrlbit = (1 << 27),
}, {
.name = "mmc_48m",
.id = 1,
.parent = &clk_48m,
.enable = s5p64x0_sclk_ctrl,
.ctrlbit = (1 << 28),
}, {
.name = "mmc_48m",
.id = 2,
.parent = &clk_48m,
.enable = s5p64x0_sclk_ctrl,
.ctrlbit = (1 << 29),
},
};
/*
* The following clocks will be enabled during clock initialization.
*/
static struct clk init_clocks[] = {
{
.name = "intc",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 1),
}, {
.name = "mem",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 21),
}, {
.name = "dma",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 12),
}, {
.name = "uart",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 1),
}, {
.name = "uart",
.id = 1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 2),
}, {
.name = "uart",
.id = 2,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 3),
}, {
.name = "uart",
.id = 3,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 4),
}, {
.name = "gpio",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 18),
},
};
static struct clk clk_iis_cd_v40 = {
.name = "iis_cdclk_v40",
.id = -1,
};
static struct clk clk_pcm_cd = {
.name = "pcm_cdclk",
.id = -1,
};
static struct clk *clkset_group1_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll.clk,
&clk_fin_epll,
};
static struct clksrc_sources clkset_group1 = {
.sources = clkset_group1_list,
.nr_sources = ARRAY_SIZE(clkset_group1_list),
};
static struct clk *clkset_uart_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll.clk,
};
static struct clksrc_sources clkset_uart = {
.sources = clkset_uart_list,
.nr_sources = ARRAY_SIZE(clkset_uart_list),
};
static struct clk *clkset_audio_list[] = {
&clk_mout_epll.clk,
&clk_dout_mpll.clk,
&clk_fin_epll,
&clk_iis_cd_v40,
&clk_pcm_cd,
};
static struct clksrc_sources clkset_audio = {
.sources = clkset_audio_list,
.nr_sources = ARRAY_SIZE(clkset_audio_list),
};
static struct clksrc_clk clksrcs[] = {
{
.clk = {
.name = "mmc_bus",
.id = 0,
.ctrlbit = (1 << 24),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 18, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "mmc_bus",
.id = 1,
.ctrlbit = (1 << 25),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 20, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "mmc_bus",
.id = 2,
.ctrlbit = (1 << 26),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 22, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 8, .size = 4 },
}, {
.clk = {
.name = "uclk1",
.id = -1,
.ctrlbit = (1 << 5),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_uart,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 13, .size = 1 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 16, .size = 4 },
}, {
.clk = {
.name = "sclk_spi",
.id = 0,
.ctrlbit = (1 << 20),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 14, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "sclk_spi",
.id = 1,
.ctrlbit = (1 << 21),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 16, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "sclk_post",
.id = -1,
.ctrlbit = (1 << 10),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 26, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 12, .size = 4 },
}, {
.clk = {
.name = "sclk_dispcon",
.id = -1,
.ctrlbit = (1 << 1),
.enable = s5p64x0_sclk1_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P64X0_CLK_SRC1, .shift = 4, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "sclk_fimgvg",
.id = -1,
.ctrlbit = (1 << 2),
.enable = s5p64x0_sclk1_ctrl,
},
.sources = &clkset_group1,
.reg_src = { .reg = S5P64X0_CLK_SRC1, .shift = 8, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "sclk_audio2",
.id = -1,
.ctrlbit = (1 << 11),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_audio,
.reg_src = { .reg = S5P64X0_CLK_SRC1, .shift = 0, .size = 3 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 24, .size = 4 },
},
};
/* Clock initialization code */
static struct clksrc_clk *sysclks[] = {
&clk_mout_apll,
&clk_mout_epll,
&clk_mout_mpll,
&clk_dout_mpll,
&clk_armclk,
&clk_hclk,
&clk_pclk,
&clk_hclk_low,
&clk_pclk_low,
};
void __init_or_cpufreq s5p6440_setup_clocks(void)
{
struct clk *xtal_clk;
unsigned long xtal;
unsigned long fclk;
unsigned long hclk;
unsigned long hclk_low;
unsigned long pclk;
unsigned long pclk_low;
unsigned long apll;
unsigned long mpll;
unsigned long epll;
unsigned int ptr;
/* Set S5P6440 functions for clk_fout_epll */
clk_fout_epll.enable = s5p64x0_epll_enable;
clk_fout_epll.ops = &s5p6440_epll_ops;
clk_48m.enable = s5p64x0_clk48m_ctrl;
xtal_clk = clk_get(NULL, "ext_xtal");
BUG_ON(IS_ERR(xtal_clk));
xtal = clk_get_rate(xtal_clk);
clk_put(xtal_clk);
apll = s5p_get_pll45xx(xtal, __raw_readl(S5P64X0_APLL_CON), pll_4502);
mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P64X0_MPLL_CON), pll_4502);
epll = s5p_get_pll90xx(xtal, __raw_readl(S5P64X0_EPLL_CON),
__raw_readl(S5P64X0_EPLL_CON_K));
clk_fout_apll.rate = apll;
clk_fout_mpll.rate = mpll;
clk_fout_epll.rate = epll;
printk(KERN_INFO "S5P6440: PLL settings, A=%ld.%ldMHz, M=%ld.%ldMHz," \
" E=%ld.%ldMHz\n",
print_mhz(apll), print_mhz(mpll), print_mhz(epll));
fclk = clk_get_rate(&clk_armclk.clk);
hclk = clk_get_rate(&clk_hclk.clk);
pclk = clk_get_rate(&clk_pclk.clk);
hclk_low = clk_get_rate(&clk_hclk_low.clk);
pclk_low = clk_get_rate(&clk_pclk_low.clk);
printk(KERN_INFO "S5P6440: HCLK=%ld.%ldMHz, HCLK_LOW=%ld.%ldMHz," \
" PCLK=%ld.%ldMHz, PCLK_LOW=%ld.%ldMHz\n",
print_mhz(hclk), print_mhz(hclk_low),
print_mhz(pclk), print_mhz(pclk_low));
clk_f.rate = fclk;
clk_h.rate = hclk;
clk_p.rate = pclk;
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
s3c_set_clksrc(&clksrcs[ptr], true);
}
static struct clk *clks[] __initdata = {
&clk_ext,
&clk_iis_cd_v40,
&clk_pcm_cd,
};
void __init s5p6440_register_clocks(void)
{
struct clk *clkp;
int ret;
int ptr;
s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));
for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
s3c_register_clksrc(sysclks[ptr], 1);
s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
clkp = init_clocks_disable;
for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) {
ret = s3c24xx_register_clock(clkp);
if (ret < 0) {
printk(KERN_ERR "Failed to register clock %s (%d)\n",
clkp->name, ret);
}
(clkp->enable)(clkp, 0);
}
s3c_pwmclk_init();
}

655
arch/arm/mach-s5p64x0/clock-s5p6450.c Normal file
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@ -0,0 +1,655 @@
/* linux/arch/arm/mach-s5p64x0/clock-s5p6450.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* S5P6450 - Clock support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/sysdev.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <mach/s5p64x0-clock.h>
#include <plat/cpu-freq.h>
#include <plat/clock.h>
#include <plat/cpu.h>
#include <plat/pll.h>
#include <plat/s5p-clock.h>
#include <plat/clock-clksrc.h>
#include <plat/s5p6450.h>
static struct clksrc_clk clk_mout_dpll = {
.clk = {
.name = "mout_dpll",
.id = -1,
},
.sources = &clk_src_dpll,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 5, .size = 1 },
};
static u32 epll_div[][5] = {
{ 133000000, 27307, 55, 2, 2 },
{ 100000000, 43691, 41, 2, 2 },
{ 480000000, 0, 80, 2, 0 },
};
static int s5p6450_epll_set_rate(struct clk *clk, unsigned long rate)
{
unsigned int epll_con, epll_con_k;
unsigned int i;
if (clk->rate == rate) /* Return if nothing changed */
return 0;
epll_con = __raw_readl(S5P64X0_EPLL_CON);
epll_con_k = __raw_readl(S5P64X0_EPLL_CON_K);
epll_con_k &= ~(PLL90XX_KDIV_MASK);
epll_con &= ~(PLL90XX_MDIV_MASK | PLL90XX_PDIV_MASK | PLL90XX_SDIV_MASK);
for (i = 0; i < ARRAY_SIZE(epll_div); i++) {
if (epll_div[i][0] == rate) {
epll_con_k |= (epll_div[i][1] << PLL90XX_KDIV_SHIFT);
epll_con |= (epll_div[i][2] << PLL90XX_MDIV_SHIFT) |
(epll_div[i][3] << PLL90XX_PDIV_SHIFT) |
(epll_div[i][4] << PLL90XX_SDIV_SHIFT);
break;
}
}
if (i == ARRAY_SIZE(epll_div)) {
printk(KERN_ERR "%s: Invalid Clock EPLL Frequency\n", __func__);
return -EINVAL;
}
__raw_writel(epll_con, S5P64X0_EPLL_CON);
__raw_writel(epll_con_k, S5P64X0_EPLL_CON_K);
clk->rate = rate;
return 0;
}
static struct clk_ops s5p6450_epll_ops = {
.get_rate = s5p64x0_epll_get_rate,
.set_rate = s5p6450_epll_set_rate,
};
static struct clksrc_clk clk_dout_epll = {
.clk = {
.name = "dout_epll",
.id = -1,
.parent = &clk_mout_epll.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 24, .size = 4 },
};
static struct clksrc_clk clk_mout_hclk_sel = {
.clk = {
.name = "mout_hclk_sel",
.id = -1,
},
.sources = &clkset_hclk_low,
.reg_src = { .reg = S5P64X0_OTHERS, .shift = 15, .size = 1 },
};
static struct clk *clkset_hclk_list[] = {
&clk_mout_hclk_sel.clk,
&clk_armclk.clk,
};
static struct clksrc_sources clkset_hclk = {
.sources = clkset_hclk_list,
.nr_sources = ARRAY_SIZE(clkset_hclk_list),
};
static struct clksrc_clk clk_hclk = {
.clk = {
.name = "clk_hclk",
.id = -1,
},
.sources = &clkset_hclk,
.reg_src = { .reg = S5P64X0_OTHERS, .shift = 14, .size = 1 },
.reg_div = { .reg = S5P64X0_CLK_DIV0, .shift = 8, .size = 4 },
};
static struct clksrc_clk clk_pclk = {
.clk = {
.name = "clk_pclk",
.id = -1,
.parent = &clk_hclk.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV0, .shift = 12, .size = 4 },
};
static struct clksrc_clk clk_dout_pwm_ratio0 = {
.clk = {
.name = "clk_dout_pwm_ratio0",
.id = -1,
.parent = &clk_mout_hclk_sel.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 16, .size = 4 },
};
static struct clksrc_clk clk_pclk_to_wdt_pwm = {
.clk = {
.name = "clk_pclk_to_wdt_pwm",
.id = -1,
.parent = &clk_dout_pwm_ratio0.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 20, .size = 4 },
};
static struct clksrc_clk clk_hclk_low = {
.clk = {
.name = "clk_hclk_low",
.id = -1,
},
.sources = &clkset_hclk_low,
.reg_src = { .reg = S5P64X0_OTHERS, .shift = 6, .size = 1 },
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 8, .size = 4 },
};
static struct clksrc_clk clk_pclk_low = {
.clk = {
.name = "clk_pclk_low",
.id = -1,
.parent = &clk_hclk_low.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 12, .size = 4 },
};
/*
* The following clocks will be disabled during clock initialization. It is
* recommended to keep the following clocks disabled until the driver requests
* for enabling the clock.
*/
static struct clk init_clocks_disable[] = {
{
.name = "usbhost",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 3),
}, {
.name = "hsmmc",
.id = 0,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 17),
}, {
.name = "hsmmc",
.id = 1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 18),
}, {
.name = "hsmmc",
.id = 2,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 19),
}, {
.name = "usbotg",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 20),
}, {
.name = "lcd",
.id = -1,
.parent = &clk_h,
.enable = s5p64x0_hclk1_ctrl,
.ctrlbit = (1 << 1),
}, {
.name = "watchdog",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 5),
}, {
.name = "adc",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 12),
}, {
.name = "i2c",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 17),
}, {
.name = "spi",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 21),
}, {
.name = "spi",
.id = 1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 22),
}, {
.name = "iis",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 26),
}, {
.name = "i2c",
.id = 1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 27),
}, {
.name = "dmc0",
.id = -1,
.parent = &clk_pclk.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 30),
}
};
/*
* The following clocks will be enabled during clock initialization.
*/
static struct clk init_clocks[] = {
{
.name = "intc",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 1),
}, {
.name = "mem",
.id = -1,
.parent = &clk_hclk.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 21),
}, {
.name = "dma",
.id = -1,
.parent = &clk_hclk_low.clk,
.enable = s5p64x0_hclk0_ctrl,
.ctrlbit = (1 << 12),
}, {
.name = "uart",
.id = 0,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 1),
}, {
.name = "uart",
.id = 1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 2),
}, {
.name = "uart",
.id = 2,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 3),
}, {
.name = "uart",
.id = 3,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 4),
}, {
.name = "timers",
.id = -1,
.parent = &clk_pclk_to_wdt_pwm.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 7),
}, {
.name = "gpio",
.id = -1,
.parent = &clk_pclk_low.clk,
.enable = s5p64x0_pclk_ctrl,
.ctrlbit = (1 << 18),
},
};
static struct clk *clkset_uart_list[] = {
&clk_dout_epll.clk,
&clk_dout_mpll.clk,
};
static struct clksrc_sources clkset_uart = {
.sources = clkset_uart_list,
.nr_sources = ARRAY_SIZE(clkset_uart_list),
};
static struct clk *clkset_mali_list[] = {
&clk_mout_epll.clk,
&clk_mout_apll.clk,
&clk_mout_mpll.clk,
};
static struct clksrc_sources clkset_mali = {
.sources = clkset_mali_list,
.nr_sources = ARRAY_SIZE(clkset_mali_list),
};
static struct clk *clkset_group2_list[] = {
&clk_dout_epll.clk,
&clk_dout_mpll.clk,
&clk_ext_xtal_mux,
};
static struct clksrc_sources clkset_group2 = {
.sources = clkset_group2_list,
.nr_sources = ARRAY_SIZE(clkset_group2_list),
};
static struct clk *clkset_dispcon_list[] = {
&clk_dout_epll.clk,
&clk_dout_mpll.clk,
&clk_ext_xtal_mux,
&clk_mout_dpll.clk,
};
static struct clksrc_sources clkset_dispcon = {
.sources = clkset_dispcon_list,
.nr_sources = ARRAY_SIZE(clkset_dispcon_list),
};
static struct clk *clkset_hsmmc44_list[] = {
&clk_dout_epll.clk,
&clk_dout_mpll.clk,
&clk_ext_xtal_mux,
&s5p_clk_27m,
&clk_48m,
};
static struct clksrc_sources clkset_hsmmc44 = {
.sources = clkset_hsmmc44_list,
.nr_sources = ARRAY_SIZE(clkset_hsmmc44_list),
};
static struct clk *clkset_sclk_audio0_list[] = {
[0] = &clk_dout_epll.clk,
[1] = &clk_dout_mpll.clk,
[2] = &clk_ext_xtal_mux,
[3] = NULL,
[4] = NULL,
};
static struct clksrc_sources clkset_sclk_audio0 = {
.sources = clkset_sclk_audio0_list,
.nr_sources = ARRAY_SIZE(clkset_sclk_audio0_list),
};
static struct clksrc_clk clk_sclk_audio0 = {
.clk = {
.name = "audio-bus",
.id = -1,
.enable = s5p64x0_sclk_ctrl,
.ctrlbit = (1 << 8),
.parent = &clk_dout_epll.clk,
},
.sources = &clkset_sclk_audio0,
.reg_src = { .reg = S5P64X0_CLK_SRC1, .shift = 10, .size = 3 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 8, .size = 4 },
};
static struct clksrc_clk clksrcs[] = {
{
.clk = {
.name = "sclk_mmc",
.id = 0,
.ctrlbit = (1 << 24),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group2,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 18, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "sclk_mmc",
.id = 1,
.ctrlbit = (1 << 25),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group2,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 20, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "sclk_mmc",
.id = 2,
.ctrlbit = (1 << 26),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group2,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 22, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 8, .size = 4 },
}, {
.clk = {
.name = "uclk1",
.id = -1,
.ctrlbit = (1 << 5),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_uart,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 13, .size = 1 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 16, .size = 4 },
}, {
.clk = {
.name = "sclk_spi",
.id = 0,
.ctrlbit = (1 << 20),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group2,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 14, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "sclk_spi",
.id = 1,
.ctrlbit = (1 << 21),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group2,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 16, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "sclk_fimc",
.id = -1,
.ctrlbit = (1 << 10),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group2,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 26, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 12, .size = 4 },
}, {
.clk = {
.name = "aclk_mali",
.id = -1,
.ctrlbit = (1 << 2),
.enable = s5p64x0_sclk1_ctrl,
},
.sources = &clkset_mali,
.reg_src = { .reg = S5P64X0_CLK_SRC1, .shift = 8, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 4, .size = 4 },
}, {
.clk = {
.name = "sclk_2d",
.id = -1,
.ctrlbit = (1 << 12),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_mali,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 30, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV2, .shift = 20, .size = 4 },
}, {
.clk = {
.name = "sclk_usi",
.id = -1,
.ctrlbit = (1 << 7),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group2,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 10, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 16, .size = 4 },
}, {
.clk = {
.name = "sclk_camif",
.id = -1,
.ctrlbit = (1 << 6),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_group2,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 28, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 20, .size = 4 },
}, {
.clk = {
.name = "sclk_dispcon",
.id = -1,
.ctrlbit = (1 << 1),
.enable = s5p64x0_sclk1_ctrl,
},
.sources = &clkset_dispcon,
.reg_src = { .reg = S5P64X0_CLK_SRC1, .shift = 4, .size = 2 },
.reg_div = { .reg = S5P64X0_CLK_DIV3, .shift = 0, .size = 4 },
}, {
.clk = {
.name = "sclk_hsmmc44",
.id = -1,
.ctrlbit = (1 << 30),
.enable = s5p64x0_sclk_ctrl,
},
.sources = &clkset_hsmmc44,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 6, .size = 3 },
.reg_div = { .reg = S5P64X0_CLK_DIV1, .shift = 28, .size = 4 },
},
};
/* Clock initialization code */
static struct clksrc_clk *sysclks[] = {
&clk_mout_apll,
&clk_mout_epll,
&clk_dout_epll,
&clk_mout_mpll,
&clk_dout_mpll,
&clk_armclk,
&clk_mout_hclk_sel,
&clk_dout_pwm_ratio0,
&clk_pclk_to_wdt_pwm,
&clk_hclk,
&clk_pclk,
&clk_hclk_low,
&clk_pclk_low,
&clk_sclk_audio0,
};
void __init_or_cpufreq s5p6450_setup_clocks(void)
{
struct clk *xtal_clk;
unsigned long xtal;
unsigned long fclk;
unsigned long hclk;
unsigned long hclk_low;
unsigned long pclk;
unsigned long pclk_low;
unsigned long apll;
unsigned long mpll;
unsigned long epll;
unsigned long dpll;
unsigned int ptr;
/* Set S5P6450 functions for clk_fout_epll */
clk_fout_epll.enable = s5p64x0_epll_enable;
clk_fout_epll.ops = &s5p6450_epll_ops;
clk_48m.enable = s5p64x0_clk48m_ctrl;
xtal_clk = clk_get(NULL, "ext_xtal");
BUG_ON(IS_ERR(xtal_clk));
xtal = clk_get_rate(xtal_clk);
clk_put(xtal_clk);
apll = s5p_get_pll45xx(xtal, __raw_readl(S5P64X0_APLL_CON), pll_4502);
mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P64X0_MPLL_CON), pll_4502);
epll = s5p_get_pll90xx(xtal, __raw_readl(S5P64X0_EPLL_CON),
__raw_readl(S5P64X0_EPLL_CON_K));
dpll = s5p_get_pll46xx(xtal, __raw_readl(S5P6450_DPLL_CON),
__raw_readl(S5P6450_DPLL_CON_K), pll_4650c);
clk_fout_apll.rate = apll;
clk_fout_mpll.rate = mpll;
clk_fout_epll.rate = epll;
clk_fout_dpll.rate = dpll;
printk(KERN_INFO "S5P6450: PLL settings, A=%ld.%ldMHz, M=%ld.%ldMHz," \
" E=%ld.%ldMHz, D=%ld.%ldMHz\n",
print_mhz(apll), print_mhz(mpll), print_mhz(epll),
print_mhz(dpll));
fclk = clk_get_rate(&clk_armclk.clk);
hclk = clk_get_rate(&clk_hclk.clk);
pclk = clk_get_rate(&clk_pclk.clk);
hclk_low = clk_get_rate(&clk_hclk_low.clk);
pclk_low = clk_get_rate(&clk_pclk_low.clk);
printk(KERN_INFO "S5P6450: HCLK=%ld.%ldMHz, HCLK_LOW=%ld.%ldMHz," \
" PCLK=%ld.%ldMHz, PCLK_LOW=%ld.%ldMHz\n",
print_mhz(hclk), print_mhz(hclk_low),
print_mhz(pclk), print_mhz(pclk_low));
clk_f.rate = fclk;
clk_h.rate = hclk;
clk_p.rate = pclk;
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
s3c_set_clksrc(&clksrcs[ptr], true);
}
void __init s5p6450_register_clocks(void)
{
struct clk *clkp;
int ret;
int ptr;
for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
s3c_register_clksrc(sysclks[ptr], 1);
s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
clkp = init_clocks_disable;
for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) {
ret = s3c24xx_register_clock(clkp);
if (ret < 0) {
printk(KERN_ERR "Failed to register clock %s (%d)\n",
clkp->name, ret);
}
(clkp->enable)(clkp, 0);
}
s3c_pwmclk_init();
}

253
arch/arm/mach-s5p64x0/clock.c Normal file
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@ -0,0 +1,253 @@
/* linux/arch/arm/mach-s5p64x0/clock.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* S5P64X0 - Clock support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/sysdev.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <plat/cpu-freq.h>
#include <plat/clock.h>
#include <plat/cpu.h>
#include <plat/pll.h>
#include <plat/s5p-clock.h>
#include <plat/clock-clksrc.h>
#include <plat/s5p6440.h>
#include <plat/s5p6450.h>
struct clksrc_clk clk_mout_apll = {
.clk = {
.name = "mout_apll",
.id = -1,
},
.sources = &clk_src_apll,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 0, .size = 1 },
};
struct clksrc_clk clk_mout_mpll = {
.clk = {
.name = "mout_mpll",
.id = -1,
},
.sources = &clk_src_mpll,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 1, .size = 1 },
};
struct clksrc_clk clk_mout_epll = {
.clk = {
.name = "mout_epll",
.id = -1,
},
.sources = &clk_src_epll,
.reg_src = { .reg = S5P64X0_CLK_SRC0, .shift = 2, .size = 1 },
};
enum perf_level {
L0 = 532*1000,
L1 = 266*1000,
L2 = 133*1000,
};
static const u32 clock_table[][3] = {
/*{ARM_CLK, DIVarm, DIVhclk}*/
{L0 * 1000, (0 << ARM_DIV_RATIO_SHIFT), (3 << S5P64X0_CLKDIV0_HCLK_SHIFT)},
{L1 * 1000, (1 << ARM_DIV_RATIO_SHIFT), (1 << S5P64X0_CLKDIV0_HCLK_SHIFT)},
{L2 * 1000, (3 << ARM_DIV_RATIO_SHIFT), (0 << S5P64X0_CLKDIV0_HCLK_SHIFT)},
};
int s5p64x0_epll_enable(struct clk *clk, int enable)
{
unsigned int ctrlbit = clk->ctrlbit;
unsigned int epll_con = __raw_readl(S5P64X0_EPLL_CON) & ~ctrlbit;
if (enable)
__raw_writel(epll_con | ctrlbit, S5P64X0_EPLL_CON);
else
__raw_writel(epll_con, S5P64X0_EPLL_CON);
return 0;
}
unsigned long s5p64x0_epll_get_rate(struct clk *clk)
{
return clk->rate;
}
unsigned long s5p64x0_armclk_get_rate(struct clk *clk)
{
unsigned long rate = clk_get_rate(clk->parent);
u32 clkdiv;
/* divisor mask starts at bit0, so no need to shift */
clkdiv = __raw_readl(ARM_CLK_DIV) & ARM_DIV_MASK;
return rate / (clkdiv + 1);
}
unsigned long s5p64x0_armclk_round_rate(struct clk *clk, unsigned long rate)
{
u32 iter;
for (iter = 1 ; iter < ARRAY_SIZE(clock_table) ; iter++) {
if (rate > clock_table[iter][0])
return clock_table[iter-1][0];
}
return clock_table[ARRAY_SIZE(clock_table) - 1][0];
}
int s5p64x0_armclk_set_rate(struct clk *clk, unsigned long rate)
{
u32 round_tmp;
u32 iter;
u32 clk_div0_tmp;
u32 cur_rate = clk->ops->get_rate(clk);
unsigned long flags;
round_tmp = clk->ops->round_rate(clk, rate);
if (round_tmp == cur_rate)
return 0;
for (iter = 0 ; iter < ARRAY_SIZE(clock_table) ; iter++) {
if (round_tmp == clock_table[iter][0])
break;
}
if (iter >= ARRAY_SIZE(clock_table))
iter = ARRAY_SIZE(clock_table) - 1;
local_irq_save(flags);
if (cur_rate > round_tmp) {
/* Frequency Down */
clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK);
clk_div0_tmp |= clock_table[iter][1];
__raw_writel(clk_div0_tmp, ARM_CLK_DIV);
clk_div0_tmp = __raw_readl(ARM_CLK_DIV) &
~(S5P64X0_CLKDIV0_HCLK_MASK);
clk_div0_tmp |= clock_table[iter][2];
__raw_writel(clk_div0_tmp, ARM_CLK_DIV);
} else {
/* Frequency Up */
clk_div0_tmp = __raw_readl(ARM_CLK_DIV) &
~(S5P64X0_CLKDIV0_HCLK_MASK);
clk_div0_tmp |= clock_table[iter][2];
__raw_writel(clk_div0_tmp, ARM_CLK_DIV);
clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK);
clk_div0_tmp |= clock_table[iter][1];
__raw_writel(clk_div0_tmp, ARM_CLK_DIV);
}
local_irq_restore(flags);
clk->rate = clock_table[iter][0];
return 0;
}
struct clk_ops s5p64x0_clkarm_ops = {
.get_rate = s5p64x0_armclk_get_rate,
.set_rate = s5p64x0_armclk_set_rate,
.round_rate = s5p64x0_armclk_round_rate,
};
struct clksrc_clk clk_armclk = {
.clk = {
.name = "armclk",
.id = 1,
.parent = &clk_mout_apll.clk,
.ops = &s5p64x0_clkarm_ops,
},
.reg_div = { .reg = S5P64X0_CLK_DIV0, .shift = 0, .size = 4 },
};
struct clksrc_clk clk_dout_mpll = {
.clk = {
.name = "dout_mpll",
.id = -1,
.parent = &clk_mout_mpll.clk,
},
.reg_div = { .reg = S5P64X0_CLK_DIV0, .shift = 4, .size = 1 },
};
struct clk *clkset_hclk_low_list[] = {
&clk_mout_apll.clk,
&clk_mout_mpll.clk,
};
struct clksrc_sources clkset_hclk_low = {
.sources = clkset_hclk_low_list,
.nr_sources = ARRAY_SIZE(clkset_hclk_low_list),
};
int s5p64x0_pclk_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P64X0_CLK_GATE_PCLK, clk, enable);
}
int s5p64x0_hclk0_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P64X0_CLK_GATE_HCLK0, clk, enable);
}
int s5p64x0_hclk1_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P64X0_CLK_GATE_HCLK1, clk, enable);
}
int s5p64x0_sclk_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P64X0_CLK_GATE_SCLK0, clk, enable);
}
int s5p64x0_sclk1_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P64X0_CLK_GATE_SCLK1, clk, enable);
}
int s5p64x0_mem_ctrl(struct clk *clk, int enable)
{
return s5p_gatectrl(S5P64X0_CLK_GATE_MEM0, clk, enable);
}
int s5p64x0_clk48m_ctrl(struct clk *clk, int enable)
{
unsigned long flags;
u32 val;
/* can't rely on clock lock, this register has other usages */
local_irq_save(flags);
val = __raw_readl(S5P64X0_OTHERS);
if (enable)
val |= S5P64X0_OTHERS_USB_SIG_MASK;
else
val &= ~S5P64X0_OTHERS_USB_SIG_MASK;
__raw_writel(val, S5P64X0_OTHERS);
local_irq_restore(flags);
return 0;
}

63
arch/arm/mach-s5p64x0/include/mach/regs-clock.h Normal file
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@ -0,0 +1,63 @@
/* linux/arch/arm/mach-s5p64x0/include/mach/regs-clock.h
*
* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* S5P64X0 - Clock register definitions
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_REGS_CLOCK_H
#define __ASM_ARCH_REGS_CLOCK_H __FILE__
#include <mach/map.h>
#define S5P_CLKREG(x) (S3C_VA_SYS + (x))
#define S5P64X0_APLL_CON S5P_CLKREG(0x0C)
#define S5P64X0_MPLL_CON S5P_CLKREG(0x10)
#define S5P64X0_EPLL_CON S5P_CLKREG(0x14)
#define S5P64X0_EPLL_CON_K S5P_CLKREG(0x18)
#define S5P64X0_CLK_SRC0 S5P_CLKREG(0x1C)
#define S5P64X0_CLK_DIV0 S5P_CLKREG(0x20)
#define S5P64X0_CLK_DIV1 S5P_CLKREG(0x24)
#define S5P64X0_CLK_DIV2 S5P_CLKREG(0x28)
#define S5P64X0_CLK_GATE_HCLK0 S5P_CLKREG(0x30)
#define S5P64X0_CLK_GATE_PCLK S5P_CLKREG(0x34)
#define S5P64X0_CLK_GATE_SCLK0 S5P_CLKREG(0x38)
#define S5P64X0_CLK_GATE_MEM0 S5P_CLKREG(0x3C)
#define S5P64X0_CLK_DIV3 S5P_CLKREG(0x40)
#define S5P64X0_CLK_GATE_HCLK1 S5P_CLKREG(0x44)
#define S5P64X0_CLK_GATE_SCLK1 S5P_CLKREG(0x48)
#define S5P6450_DPLL_CON S5P_CLKREG(0x50)
#define S5P6450_DPLL_CON_K S5P_CLKREG(0x54)
#define S5P64X0_CLK_SRC1 S5P_CLKREG(0x10C)
#define S5P64X0_SYS_ID S5P_CLKREG(0x118)
#define S5P64X0_SYS_OTHERS S5P_CLKREG(0x11C)
#define S5P64X0_PWR_CFG S5P_CLKREG(0x804)
#define S5P64X0_OTHERS S5P_CLKREG(0x900)
#define S5P64X0_CLKDIV0_HCLK_SHIFT (8)
#define S5P64X0_CLKDIV0_HCLK_MASK (0xF << S5P64X0_CLKDIV0_HCLK_SHIFT)
#define S5P64X0_OTHERS_USB_SIG_MASK (1 << 16)
/* Compatibility defines */
#define ARM_CLK_DIV S5P64X0_CLK_DIV0
#define ARM_DIV_RATIO_SHIFT 0
#define ARM_DIV_MASK (0xF << ARM_DIV_RATIO_SHIFT)
#endif /* __ASM_ARCH_REGS_CLOCK_H */

46
arch/arm/mach-s5p64x0/include/mach/s5p64x0-clock.h Normal file
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@ -0,0 +1,46 @@
/* linux/arch/arm/mach-s5p64x0/include/mach/s5p64x0-clock.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Header file for s5p64x0 clock support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_CLOCK_H
#define __ASM_ARCH_CLOCK_H __FILE__
#include <linux/clk.h>
extern struct clksrc_clk clk_mout_apll;
extern struct clksrc_clk clk_mout_mpll;
extern struct clksrc_clk clk_mout_epll;
extern int s5p64x0_epll_enable(struct clk *clk, int enable);
extern unsigned long s5p64x0_epll_get_rate(struct clk *clk);
extern unsigned long s5p64x0_armclk_get_rate(struct clk *clk);
extern unsigned long s5p64x0_armclk_round_rate(struct clk *clk, unsigned long rate);
extern int s5p64x0_armclk_set_rate(struct clk *clk, unsigned long rate);
extern struct clk_ops s5p64x0_clkarm_ops;
extern struct clksrc_clk clk_armclk;
extern struct clksrc_clk clk_dout_mpll;
extern struct clk *clkset_hclk_low_list[];
extern struct clksrc_sources clkset_hclk_low;
extern int s5p64x0_pclk_ctrl(struct clk *clk, int enable);
extern int s5p64x0_hclk0_ctrl(struct clk *clk, int enable);
extern int s5p64x0_hclk1_ctrl(struct clk *clk, int enable);
extern int s5p64x0_sclk_ctrl(struct clk *clk, int enable);
extern int s5p64x0_sclk1_ctrl(struct clk *clk, int enable);
extern int s5p64x0_mem_ctrl(struct clk *clk, int enable);
extern int s5p64x0_clk48m_ctrl(struct clk *clk, int enable);
#endif /* __ASM_ARCH_CLOCK_H */

19
arch/arm/plat-s5p/clock.c
View File

@ -74,6 +74,13 @@ struct clk clk_fout_epll = {
.ctrlbit = (1 << 31),
};
/* DPLL clock output */
struct clk clk_fout_dpll = {
.name = "fout_dpll",
.id = -1,
.ctrlbit = (1 << 31),
};
/* VPLL clock output */
struct clk clk_fout_vpll = {
.name = "fout_vpll",
@ -122,6 +129,17 @@ struct clksrc_sources clk_src_epll = {
.nr_sources = ARRAY_SIZE(clk_src_epll_list),
};
/* Possible clock sources for DPLL Mux */
static struct clk *clk_src_dpll_list[] = {
[0] = &clk_fin_dpll,
[1] = &clk_fout_dpll,
};
struct clksrc_sources clk_src_dpll = {
.sources = clk_src_dpll_list,
.nr_sources = ARRAY_SIZE(clk_src_dpll_list),
};
struct clk clk_vpll = {
.name = "vpll",
.id = -1,
@ -145,6 +163,7 @@ static struct clk *s5p_clks[] __initdata = {
&clk_fout_apll,
&clk_fout_mpll,
&clk_fout_epll,
&clk_fout_dpll,
&clk_fout_vpll,
&clk_arm,
&clk_vpll,

7
arch/arm/plat-s5p/include/plat/pll.h
View File

@ -47,6 +47,7 @@ static inline unsigned long s5p_get_pll45xx(unsigned long baseclk, u32 pll_con,
}
#define PLL46XX_KDIV_MASK (0xFFFF)
#define PLL4650C_KDIV_MASK (0xFFF)
#define PLL46XX_MDIV_MASK (0x1FF)
#define PLL46XX_PDIV_MASK (0x3F)
#define PLL46XX_SDIV_MASK (0x7)
@ -57,6 +58,7 @@ static inline unsigned long s5p_get_pll45xx(unsigned long baseclk, u32 pll_con,
enum pll46xx_type_t {
pll_4600,
pll_4650,
pll_4650c,
};
static inline unsigned long s5p_get_pll46xx(unsigned long baseclk,
@ -72,6 +74,11 @@ static inline unsigned long s5p_get_pll46xx(unsigned long baseclk,
sdiv = (pll_con0 >> PLL46XX_SDIV_SHIFT) & PLL46XX_SDIV_MASK;
kdiv = pll_con1 & PLL46XX_KDIV_MASK;
if (pll_type == pll_4650c)
kdiv = pll_con1 & PLL4650C_KDIV_MASK;
else
kdiv = pll_con1 & PLL46XX_KDIV_MASK;
tmp = baseclk;
if (pll_type == pll_4600) {

8
arch/arm/plat-s5p/include/plat/s5p-clock.h
View File

@ -1,7 +1,7 @@
/* linux/arch/arm/plat-s5p/include/plat/s5p-clock.h
*
* Copyright 2009 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Header file for s5p clock support
*
@ -20,6 +20,7 @@
#define clk_fin_apll clk_ext_xtal_mux
#define clk_fin_mpll clk_ext_xtal_mux
#define clk_fin_epll clk_ext_xtal_mux
#define clk_fin_dpll clk_ext_xtal_mux
#define clk_fin_vpll clk_ext_xtal_mux
#define clk_fin_hpll clk_ext_xtal_mux
@ -30,6 +31,7 @@ extern struct clk s5p_clk_27m;
extern struct clk clk_fout_apll;
extern struct clk clk_fout_mpll;
extern struct clk clk_fout_epll;
extern struct clk clk_fout_dpll;
extern struct clk clk_fout_vpll;
extern struct clk clk_arm;
extern struct clk clk_vpll;
@ -37,8 +39,8 @@ extern struct clk clk_vpll;
extern struct clksrc_sources clk_src_apll;
extern struct clksrc_sources clk_src_mpll;
extern struct clksrc_sources clk_src_epll;
extern struct clksrc_sources clk_src_dpll;
extern int s5p6440_clk48m_ctrl(struct clk *clk, int enable);
extern int s5p_gatectrl(void __iomem *reg, struct clk *clk, int enable);
#endif /* __ASM_PLAT_S5P_CLOCK_H */