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u-boot/board/siemens/pxm2/board.c
Tom Rini 39245c8699 am33xx: Stop modifying certain EMIF4D registers 
Based on the definitive guide to EMIF configuration[1] certain registers
that we have been modifying (and are documented registers) should be
left in their reset values rather than modified.  This has been tested
on AM335x GP EVM and Beaglebone White.

[1]: http://processors.wiki.ti.com/index.php/AM335x_EMIF_Configuration_tips
Cc: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Tom Rini <trini@ti.com>
Tested-by: Matt Porter <matt.porter@linaro.org>
2013-12-04 08:11:45 -05:00

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/*
* Board functions for TI AM335X based pxm2 board
* (C) Copyright 2013 Siemens Schweiz AG
* (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* Based on:
* u-boot:/board/ti/am335x/board.c
*
* Board functions for TI AM335X based boards
*
* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <spl.h>
#include <asm/arch/cpu.h>
#include <asm/arch/hardware.h>
#include <asm/arch/omap.h>
#include <asm/arch/ddr_defs.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/sys_proto.h>
#include "../../../drivers/video/da8xx-fb.h"
#include <asm/io.h>
#include <asm/emif.h>
#include <asm/gpio.h>
#include <i2c.h>
#include <miiphy.h>
#include <cpsw.h>
#include <watchdog.h>
#include "board.h"
#include "../common/factoryset.h"
#include "pmic.h"
#include <nand.h>
#include <bmp_layout.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_SPL_BUILD
static void board_init_ddr(void)
{
struct emif_regs pxm2_ddr3_emif_reg_data = {
.sdram_config = 0x41805332,
.sdram_tim1 = 0x666b3c9,
.sdram_tim2 = 0x243631ca,
.sdram_tim3 = 0x33f,
.emif_ddr_phy_ctlr_1 = 0x100005,
.zq_config = 0,
.ref_ctrl = 0x81a,
};
struct ddr_data pxm2_ddr3_data = {
.datardsratio0 = 0x81204812,
.datawdsratio0 = 0,
.datafwsratio0 = 0x8020080,
.datawrsratio0 = 0x4010040,
};
struct cmd_control pxm2_ddr3_cmd_ctrl_data = {
.cmd0csratio = 0x80,
.cmd0iclkout = 0,
.cmd1csratio = 0x80,
.cmd1iclkout = 0,
.cmd2csratio = 0x80,
.cmd2iclkout = 0,
};
config_ddr(DDR_PLL_FREQ, DXR2_IOCTRL_VAL, &pxm2_ddr3_data,
&pxm2_ddr3_cmd_ctrl_data, &pxm2_ddr3_emif_reg_data, 0);
}
/*
* voltage switching for MPU frequency switching.
* @module = mpu - 0, core - 1
* @vddx_op_vol_sel = vdd voltage to set
*/
#define MPU 0
#define CORE 1
int voltage_update(unsigned int module, unsigned char vddx_op_vol_sel)
{
uchar buf[4];
unsigned int reg_offset;
if (module == MPU)
reg_offset = PMIC_VDD1_OP_REG;
else
reg_offset = PMIC_VDD2_OP_REG;
/* Select VDDx OP */
if (i2c_read(PMIC_CTRL_I2C_ADDR, reg_offset, 1, buf, 1))
return 1;
buf[0] &= ~PMIC_OP_REG_CMD_MASK;
if (i2c_write(PMIC_CTRL_I2C_ADDR, reg_offset, 1, buf, 1))
return 1;
/* Configure VDDx OP Voltage */
if (i2c_read(PMIC_CTRL_I2C_ADDR, reg_offset, 1, buf, 1))
return 1;
buf[0] &= ~PMIC_OP_REG_SEL_MASK;
buf[0] |= vddx_op_vol_sel;
if (i2c_write(PMIC_CTRL_I2C_ADDR, reg_offset, 1, buf, 1))
return 1;
if (i2c_read(PMIC_CTRL_I2C_ADDR, reg_offset, 1, buf, 1))
return 1;
if ((buf[0] & PMIC_OP_REG_SEL_MASK) != vddx_op_vol_sel)
return 1;
return 0;
}
#define OSC (V_OSCK/1000000)
const struct dpll_params dpll_mpu_pxm2 = {
720, OSC-1, 1, -1, -1, -1, -1};
void spl_siemens_board_init(void)
{
uchar buf[4];
/*
* pxm2 PMIC code. All boards currently want an MPU voltage
* of 1.2625V and CORE voltage of 1.1375V to operate at
* 720MHz.
*/
if (i2c_probe(PMIC_CTRL_I2C_ADDR))
return;
/* VDD1/2 voltage selection register access by control i/f */
if (i2c_read(PMIC_CTRL_I2C_ADDR, PMIC_DEVCTRL_REG, 1, buf, 1))
return;
buf[0] |= PMIC_DEVCTRL_REG_SR_CTL_I2C_SEL_CTL_I2C;
if (i2c_write(PMIC_CTRL_I2C_ADDR, PMIC_DEVCTRL_REG, 1, buf, 1))
return;
/* Frequency switching for OPP 120 */
if (voltage_update(MPU, PMIC_OP_REG_SEL_1_2_6) ||
voltage_update(CORE, PMIC_OP_REG_SEL_1_1_3)) {
printf("voltage update failed\n");
}
}
#endif /* if def CONFIG_SPL_BUILD */
int read_eeprom(void)
{
/* nothing ToDo here for this board */
return 0;
}
#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
static void cpsw_control(int enabled)
{
/* VTP can be added here */
return;
}
static struct cpsw_slave_data cpsw_slaves[] = {
{
.slave_reg_ofs = 0x208,
.sliver_reg_ofs = 0xd80,
.phy_id = 0,
.phy_if = PHY_INTERFACE_MODE_RMII,
},
{
.slave_reg_ofs = 0x308,
.sliver_reg_ofs = 0xdc0,
.phy_id = 1,
.phy_if = PHY_INTERFACE_MODE_RMII,
},
};
static struct cpsw_platform_data cpsw_data = {
.mdio_base = CPSW_MDIO_BASE,
.cpsw_base = CPSW_BASE,
.mdio_div = 0xff,
.channels = 4,
.cpdma_reg_ofs = 0x800,
.slaves = 1,
.slave_data = cpsw_slaves,
.ale_reg_ofs = 0xd00,
.ale_entries = 1024,
.host_port_reg_ofs = 0x108,
.hw_stats_reg_ofs = 0x900,
.bd_ram_ofs = 0x2000,
.mac_control = (1 << 5),
.control = cpsw_control,
.host_port_num = 0,
.version = CPSW_CTRL_VERSION_2,
};
#endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */
#if defined(CONFIG_DRIVER_TI_CPSW) || \
(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
int board_eth_init(bd_t *bis)
{
int n = 0;
#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
#ifdef CONFIG_FACTORYSET
int rv;
if (!is_valid_ether_addr(factory_dat.mac))
printf("Error: no valid mac address\n");
else
eth_setenv_enetaddr("ethaddr", factory_dat.mac);
#endif /* #ifdef CONFIG_FACTORYSET */
/* Set rgmii mode and enable rmii clock to be sourced from chip */
writel(RGMII_MODE_ENABLE , &cdev->miisel);
rv = cpsw_register(&cpsw_data);
if (rv < 0)
printf("Error %d registering CPSW switch\n", rv);
else
n += rv;
#endif
return n;
}
#endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */
#if defined(CONFIG_VIDEO) && !defined(CONFIG_SPL_BUILD)
static struct da8xx_panel lcd_panels[] = {
/* AUO G156XW01 V1 */
[0] = {
.name = "AUO_G156XW01_V1",
.width = 1376,
.height = 768,
.hfp = 14,
.hbp = 64,
.hsw = 56,
.vfp = 1,
.vbp = 28,
.vsw = 3,
.pxl_clk = 60000000,
.invert_pxl_clk = 0,
},
/* AUO B101EVN06 V0 */
[1] = {
.name = "AUO_B101EVN06_V0",
.width = 1280,
.height = 800,
.hfp = 52,
.hbp = 84,
.hsw = 36,
.vfp = 3,
.vbp = 14,
.vsw = 6,
.pxl_clk = 60000000,
.invert_pxl_clk = 0,
},
/*
* Settings from factoryset
* stored in EEPROM
*/
[2] = {
.name = "factoryset",
.width = 0,
.height = 0,
.hfp = 0,
.hbp = 0,
.hsw = 0,
.vfp = 0,
.vbp = 0,
.vsw = 0,
.pxl_clk = 60000000,
.invert_pxl_clk = 0,
},
};
static const struct display_panel disp_panel = {
WVGA,
32,
16,
COLOR_ACTIVE,
};
static const struct lcd_ctrl_config lcd_cfg = {
&disp_panel,
.ac_bias = 255,
.ac_bias_intrpt = 0,
.dma_burst_sz = 16,
.bpp = 32,
.fdd = 0x80,
.tft_alt_mode = 0,
.stn_565_mode = 0,
.mono_8bit_mode = 0,
.invert_line_clock = 1,
.invert_frm_clock = 1,
.sync_edge = 0,
.sync_ctrl = 1,
.raster_order = 0,
};
static int set_gpio(int gpio, int state)
{
gpio_request(gpio, "temp");
gpio_direction_output(gpio, state);
gpio_set_value(gpio, state);
gpio_free(gpio);
return 0;
}
static int enable_backlight(void)
{
set_gpio(BOARD_LCD_POWER, 1);
set_gpio(BOARD_BACK_LIGHT, 1);
set_gpio(BOARD_TOUCH_POWER, 1);
return 0;
}
static int enable_pwm(void)
{
struct pwmss_regs *pwmss = (struct pwmss_regs *)PWMSS0_BASE;
struct pwmss_ecap_regs *ecap;
int ticks = PWM_TICKS;
int duty = PWM_DUTY;
ecap = (struct pwmss_ecap_regs *)AM33XX_ECAP0_BASE;
/* enable clock */
setbits_le32(&pwmss->clkconfig, ECAP_CLK_EN);
/* TimeStam Counter register */
writel(0xdb9, &ecap->tsctr);
/* config period */
writel(ticks - 1, &ecap->cap3);
writel(ticks - 1, &ecap->cap1);
setbits_le16(&ecap->ecctl2,
(ECTRL2_MDSL_ECAP | ECTRL2_SYNCOSEL_MASK | 0xd0));
/* config duty */
writel(duty, &ecap->cap2);
writel(duty, &ecap->cap4);
/* start */
setbits_le16(&ecap->ecctl2, ECTRL2_CTRSTP_FREERUN);
return 0;
}
static struct dpll_regs dpll_lcd_regs = {
.cm_clkmode_dpll = CM_WKUP + 0x98,
.cm_idlest_dpll = CM_WKUP + 0x48,
.cm_clksel_dpll = CM_WKUP + 0x54,
};
/* no console on this board */
int board_cfb_skip(void)
{
return 1;
}
#define PLL_GET_M(v) ((v >> 8) & 0x7ff)
#define PLL_GET_N(v) (v & 0x7f)
static int get_clk(struct dpll_regs *dpll_regs)
{
unsigned int val;
unsigned int m, n;
int f = 0;
val = readl(dpll_regs->cm_clksel_dpll);
m = PLL_GET_M(val);
n = PLL_GET_N(val);
f = (m * V_OSCK) / n;
return f;
};
int clk_get(int clk)
{
return get_clk(&dpll_lcd_regs);
};
static int conf_disp_pll(int m, int n)
{
struct cm_perpll *cmper = (struct cm_perpll *)CM_PER;
struct cm_dpll *cmdpll = (struct cm_dpll *)CM_DPLL;
struct dpll_params dpll_lcd = {m, n, -1, -1, -1, -1, -1};
u32 *const clk_domains[] = {
&cmper->lcdclkctrl,
0
};
u32 *const clk_modules_explicit_en[] = {
&cmper->lcdclkctrl,
&cmper->lcdcclkstctrl,
&cmper->epwmss0clkctrl,
0
};
do_enable_clocks(clk_domains, clk_modules_explicit_en, 1);
writel(0x0, &cmdpll->clklcdcpixelclk);
do_setup_dpll(&dpll_lcd_regs, &dpll_lcd);
return 0;
}
static int board_video_init(void)
{
conf_disp_pll(24, 1);
if (factory_dat.pxm50)
da8xx_video_init(&lcd_panels[0], &lcd_cfg, lcd_cfg.bpp);
else
da8xx_video_init(&lcd_panels[1], &lcd_cfg, lcd_cfg.bpp);
enable_pwm();
enable_backlight();
return 0;
}
#endif
#include "../common/board.c"
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