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linux/drivers/clk/renesas/r8a7796-cpg-mssr.c
Khiem Nguyen d963654e10 clk: renesas: r8a7796: Add IIC-DVFS clock 
This patch adds DVFS clock for R8A7796 SoC.

Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
Signed-off-by: Dien Pham <dien.pham.ry@rvc.renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-01-27 08:59:24 +01:00

297 lines
11 KiB
C
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/*
* r8a7796 Clock Pulse Generator / Module Standby and Software Reset
*
* Copyright (C) 2016 Glider bvba
*
* Based on r8a7795-cpg-mssr.c
*
* Copyright (C) 2015 Glider bvba
* Copyright (C) 2015 Renesas Electronics Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*/
#include <linux/device.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/soc/renesas/rcar-rst.h>
#include <dt-bindings/clock/r8a7796-cpg-mssr.h>
#include "renesas-cpg-mssr.h"
#include "rcar-gen3-cpg.h"
enum clk_ids {
/* Core Clock Outputs exported to DT */
LAST_DT_CORE_CLK = R8A7796_CLK_OSC,
/* External Input Clocks */
CLK_EXTAL,
CLK_EXTALR,
/* Internal Core Clocks */
CLK_MAIN,
CLK_PLL0,
CLK_PLL1,
CLK_PLL2,
CLK_PLL3,
CLK_PLL4,
CLK_PLL1_DIV2,
CLK_PLL1_DIV4,
CLK_S0,
CLK_S1,
CLK_S2,
CLK_S3,
CLK_SDSRC,
CLK_SSPSRC,
CLK_RINT,
/* Module Clocks */
MOD_CLK_BASE
};
static const struct cpg_core_clk r8a7796_core_clks[] __initconst = {
/* External Clock Inputs */
DEF_INPUT("extal", CLK_EXTAL),
DEF_INPUT("extalr", CLK_EXTALR),
/* Internal Core Clocks */
DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN),
DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN),
DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN),
DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN),
DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1),
DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1),
DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1),
DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1),
/* Core Clock Outputs */
DEF_FIXED("ztr", R8A7796_CLK_ZTR, CLK_PLL1_DIV2, 6, 1),
DEF_FIXED("ztrd2", R8A7796_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
DEF_FIXED("zt", R8A7796_CLK_ZT, CLK_PLL1_DIV2, 4, 1),
DEF_FIXED("zx", R8A7796_CLK_ZX, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED("s0d1", R8A7796_CLK_S0D1, CLK_S0, 1, 1),
DEF_FIXED("s0d2", R8A7796_CLK_S0D2, CLK_S0, 2, 1),
DEF_FIXED("s0d3", R8A7796_CLK_S0D3, CLK_S0, 3, 1),
DEF_FIXED("s0d4", R8A7796_CLK_S0D4, CLK_S0, 4, 1),
DEF_FIXED("s0d6", R8A7796_CLK_S0D6, CLK_S0, 6, 1),
DEF_FIXED("s0d8", R8A7796_CLK_S0D8, CLK_S0, 8, 1),
DEF_FIXED("s0d12", R8A7796_CLK_S0D12, CLK_S0, 12, 1),
DEF_FIXED("s1d1", R8A7796_CLK_S1D1, CLK_S1, 1, 1),
DEF_FIXED("s1d2", R8A7796_CLK_S1D2, CLK_S1, 2, 1),
DEF_FIXED("s1d4", R8A7796_CLK_S1D4, CLK_S1, 4, 1),
DEF_FIXED("s2d1", R8A7796_CLK_S2D1, CLK_S2, 1, 1),
DEF_FIXED("s2d2", R8A7796_CLK_S2D2, CLK_S2, 2, 1),
DEF_FIXED("s2d4", R8A7796_CLK_S2D4, CLK_S2, 4, 1),
DEF_FIXED("s3d1", R8A7796_CLK_S3D1, CLK_S3, 1, 1),
DEF_FIXED("s3d2", R8A7796_CLK_S3D2, CLK_S3, 2, 1),
DEF_FIXED("s3d4", R8A7796_CLK_S3D4, CLK_S3, 4, 1),
DEF_GEN3_SD("sd0", R8A7796_CLK_SD0, CLK_SDSRC, 0x0074),
DEF_GEN3_SD("sd1", R8A7796_CLK_SD1, CLK_SDSRC, 0x0078),
DEF_GEN3_SD("sd2", R8A7796_CLK_SD2, CLK_SDSRC, 0x0268),
DEF_GEN3_SD("sd3", R8A7796_CLK_SD3, CLK_SDSRC, 0x026c),
DEF_FIXED("cl", R8A7796_CLK_CL, CLK_PLL1_DIV2, 48, 1),
DEF_FIXED("cp", R8A7796_CLK_CP, CLK_EXTAL, 2, 1),
DEF_DIV6P1("canfd", R8A7796_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
DEF_DIV6P1("csi0", R8A7796_CLK_CSI0, CLK_PLL1_DIV4, 0x00c),
DEF_DIV6P1("mso", R8A7796_CLK_MSO, CLK_PLL1_DIV4, 0x014),
DEF_DIV6_RO("osc", R8A7796_CLK_OSC, CLK_EXTAL, CPG_RCKCR, 8),
DEF_DIV6_RO("r_int", CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32),
DEF_BASE("r", R8A7796_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT),
};
static const struct mssr_mod_clk r8a7796_mod_clks[] __initconst = {
DEF_MOD("scif5", 202, R8A7796_CLK_S3D4),
DEF_MOD("scif4", 203, R8A7796_CLK_S3D4),
DEF_MOD("scif3", 204, R8A7796_CLK_S3D4),
DEF_MOD("scif1", 206, R8A7796_CLK_S3D4),
DEF_MOD("scif0", 207, R8A7796_CLK_S3D4),
DEF_MOD("msiof3", 208, R8A7796_CLK_MSO),
DEF_MOD("msiof2", 209, R8A7796_CLK_MSO),
DEF_MOD("msiof1", 210, R8A7796_CLK_MSO),
DEF_MOD("msiof0", 211, R8A7796_CLK_MSO),
DEF_MOD("sys-dmac2", 217, R8A7796_CLK_S0D3),
DEF_MOD("sys-dmac1", 218, R8A7796_CLK_S0D3),
DEF_MOD("sys-dmac0", 219, R8A7796_CLK_S0D3),
DEF_MOD("cmt3", 300, R8A7796_CLK_R),
DEF_MOD("cmt2", 301, R8A7796_CLK_R),
DEF_MOD("cmt1", 302, R8A7796_CLK_R),
DEF_MOD("cmt0", 303, R8A7796_CLK_R),
DEF_MOD("scif2", 310, R8A7796_CLK_S3D4),
DEF_MOD("sdif3", 311, R8A7796_CLK_SD3),
DEF_MOD("sdif2", 312, R8A7796_CLK_SD2),
DEF_MOD("sdif1", 313, R8A7796_CLK_SD1),
DEF_MOD("sdif0", 314, R8A7796_CLK_SD0),
DEF_MOD("rwdt0", 402, R8A7796_CLK_R),
DEF_MOD("intc-ap", 408, R8A7796_CLK_S3D1),
DEF_MOD("drif7", 508, R8A7796_CLK_S3D2),
DEF_MOD("drif6", 509, R8A7796_CLK_S3D2),
DEF_MOD("drif5", 510, R8A7796_CLK_S3D2),
DEF_MOD("drif4", 511, R8A7796_CLK_S3D2),
DEF_MOD("drif3", 512, R8A7796_CLK_S3D2),
DEF_MOD("drif2", 513, R8A7796_CLK_S3D2),
DEF_MOD("drif1", 514, R8A7796_CLK_S3D2),
DEF_MOD("drif0", 515, R8A7796_CLK_S3D2),
DEF_MOD("hscif4", 516, R8A7796_CLK_S3D1),
DEF_MOD("hscif3", 517, R8A7796_CLK_S3D1),
DEF_MOD("hscif2", 518, R8A7796_CLK_S3D1),
DEF_MOD("hscif1", 519, R8A7796_CLK_S3D1),
DEF_MOD("hscif0", 520, R8A7796_CLK_S3D1),
DEF_MOD("thermal", 522, R8A7796_CLK_CP),
DEF_MOD("fcpvd2", 601, R8A7796_CLK_S0D2),
DEF_MOD("fcpvd1", 602, R8A7796_CLK_S0D2),
DEF_MOD("fcpvd0", 603, R8A7796_CLK_S0D2),
DEF_MOD("fcpvb0", 607, R8A7796_CLK_S0D1),
DEF_MOD("fcpvi0", 611, R8A7796_CLK_S0D1),
DEF_MOD("fcpf0", 615, R8A7796_CLK_S0D1),
DEF_MOD("fcpci0", 617, R8A7796_CLK_S0D2),
DEF_MOD("fcpcs", 619, R8A7796_CLK_S0D2),
DEF_MOD("vspd2", 621, R8A7796_CLK_S0D2),
DEF_MOD("vspd1", 622, R8A7796_CLK_S0D2),
DEF_MOD("vspd0", 623, R8A7796_CLK_S0D2),
DEF_MOD("vspb", 626, R8A7796_CLK_S0D1),
DEF_MOD("vspi0", 631, R8A7796_CLK_S0D1),
DEF_MOD("csi20", 714, R8A7796_CLK_CSI0),
DEF_MOD("csi40", 716, R8A7796_CLK_CSI0),
DEF_MOD("du2", 722, R8A7796_CLK_S2D1),
DEF_MOD("du1", 723, R8A7796_CLK_S2D1),
DEF_MOD("du0", 724, R8A7796_CLK_S2D1),
DEF_MOD("lvds", 727, R8A7796_CLK_S2D1),
DEF_MOD("vin7", 804, R8A7796_CLK_S0D2),
DEF_MOD("vin6", 805, R8A7796_CLK_S0D2),
DEF_MOD("vin5", 806, R8A7796_CLK_S0D2),
DEF_MOD("vin4", 807, R8A7796_CLK_S0D2),
DEF_MOD("vin3", 808, R8A7796_CLK_S0D2),
DEF_MOD("vin2", 809, R8A7796_CLK_S0D2),
DEF_MOD("vin1", 810, R8A7796_CLK_S0D2),
DEF_MOD("vin0", 811, R8A7796_CLK_S0D2),
DEF_MOD("etheravb", 812, R8A7796_CLK_S0D6),
DEF_MOD("gpio7", 905, R8A7796_CLK_S3D4),
DEF_MOD("gpio6", 906, R8A7796_CLK_S3D4),
DEF_MOD("gpio5", 907, R8A7796_CLK_S3D4),
DEF_MOD("gpio4", 908, R8A7796_CLK_S3D4),
DEF_MOD("gpio3", 909, R8A7796_CLK_S3D4),
DEF_MOD("gpio2", 910, R8A7796_CLK_S3D4),
DEF_MOD("gpio1", 911, R8A7796_CLK_S3D4),
DEF_MOD("gpio0", 912, R8A7796_CLK_S3D4),
DEF_MOD("can-fd", 914, R8A7796_CLK_S3D2),
DEF_MOD("can-if1", 915, R8A7796_CLK_S3D4),
DEF_MOD("can-if0", 916, R8A7796_CLK_S3D4),
DEF_MOD("i2c6", 918, R8A7796_CLK_S0D6),
DEF_MOD("i2c5", 919, R8A7796_CLK_S0D6),
DEF_MOD("i2c-dvfs", 926, R8A7796_CLK_CP),
DEF_MOD("i2c4", 927, R8A7796_CLK_S0D6),
DEF_MOD("i2c3", 928, R8A7796_CLK_S0D6),
DEF_MOD("i2c2", 929, R8A7796_CLK_S3D2),
DEF_MOD("i2c1", 930, R8A7796_CLK_S3D2),
DEF_MOD("i2c0", 931, R8A7796_CLK_S3D2),
};
static const unsigned int r8a7796_crit_mod_clks[] __initconst = {
MOD_CLK_ID(408), /* INTC-AP (GIC) */
};
/*
* CPG Clock Data
*/
/*
* MD EXTAL PLL0 PLL1 PLL2 PLL3 PLL4
* 14 13 19 17 (MHz)
*-------------------------------------------------------------------
* 0 0 0 0 16.66 x 1 x180 x192 x144 x192 x144
* 0 0 0 1 16.66 x 1 x180 x192 x144 x128 x144
* 0 0 1 0 Prohibited setting
* 0 0 1 1 16.66 x 1 x180 x192 x144 x192 x144
* 0 1 0 0 20 x 1 x150 x160 x120 x160 x120
* 0 1 0 1 20 x 1 x150 x160 x120 x106 x120
* 0 1 1 0 Prohibited setting
* 0 1 1 1 20 x 1 x150 x160 x120 x160 x120
* 1 0 0 0 25 x 1 x120 x128 x96 x128 x96
* 1 0 0 1 25 x 1 x120 x128 x96 x84 x96
* 1 0 1 0 Prohibited setting
* 1 0 1 1 25 x 1 x120 x128 x96 x128 x96
* 1 1 0 0 33.33 / 2 x180 x192 x144 x192 x144
* 1 1 0 1 33.33 / 2 x180 x192 x144 x128 x144
* 1 1 1 0 Prohibited setting
* 1 1 1 1 33.33 / 2 x180 x192 x144 x192 x144
*/
#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 11) | \
(((md) & BIT(13)) >> 11) | \
(((md) & BIT(19)) >> 18) | \
(((md) & BIT(17)) >> 17))
static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {
/* EXTAL div PLL1 mult PLL3 mult */
{ 1, 192, 192, },
{ 1, 192, 128, },
{ 0, /* Prohibited setting */ },
{ 1, 192, 192, },
{ 1, 160, 160, },
{ 1, 160, 106, },
{ 0, /* Prohibited setting */ },
{ 1, 160, 160, },
{ 1, 128, 128, },
{ 1, 128, 84, },
{ 0, /* Prohibited setting */ },
{ 1, 128, 128, },
{ 2, 192, 192, },
{ 2, 192, 128, },
{ 0, /* Prohibited setting */ },
{ 2, 192, 192, },
};
static int __init r8a7796_cpg_mssr_init(struct device *dev)
{
const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
u32 cpg_mode;
int error;
error = rcar_rst_read_mode_pins(&cpg_mode);
if (error)
return error;
cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
if (!cpg_pll_config->extal_div) {
dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
return -EINVAL;
}
return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR);
}
const struct cpg_mssr_info r8a7796_cpg_mssr_info __initconst = {
/* Core Clocks */
.core_clks = r8a7796_core_clks,
.num_core_clks = ARRAY_SIZE(r8a7796_core_clks),
.last_dt_core_clk = LAST_DT_CORE_CLK,
.num_total_core_clks = MOD_CLK_BASE,
/* Module Clocks */
.mod_clks = r8a7796_mod_clks,
.num_mod_clks = ARRAY_SIZE(r8a7796_mod_clks),
.num_hw_mod_clks = 12 * 32,
/* Critical Module Clocks */
.crit_mod_clks = r8a7796_crit_mod_clks,
.num_crit_mod_clks = ARRAY_SIZE(r8a7796_crit_mod_clks),
/* Callbacks */
.init = r8a7796_cpg_mssr_init,
.cpg_clk_register = rcar_gen3_cpg_clk_register,
};
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