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kernel-ark/drivers/clk/renesas/r8a7792-cpg-mssr.c
Geert Uytterhoeven fd3c2f3826 clk: renesas: r8a7792: Add new CPG/MSSR driver 
Add a new R-Car V2H Clock Pulse Generator / Module Standby and Software
Reset driver, using the CPG/MSSR driver core.  This will enable support
for module resets, which are not supported by the existing driver.

The old driver can still be used through a Kconfig option, to preserve
backward compatibility with old DTBs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-05-24 10:20:01 +02:00

222 lines
7.5 KiB
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/*
* r8a7792 Clock Pulse Generator / Module Standby and Software Reset
*
* Copyright (C) 2017 Glider bvba
*
* Based on clk-rcar-gen2.c
*
* Copyright (C) 2013 Ideas On Board SPRL
*
* 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/r8a7792-cpg-mssr.h>
#include "renesas-cpg-mssr.h"
#include "rcar-gen2-cpg.h"
enum clk_ids {
/* Core Clock Outputs exported to DT */
LAST_DT_CORE_CLK = R8A7792_CLK_OSC,
/* External Input Clocks */
CLK_EXTAL,
/* Internal Core Clocks */
CLK_MAIN,
CLK_PLL0,
CLK_PLL1,
CLK_PLL3,
CLK_PLL1_DIV2,
/* Module Clocks */
MOD_CLK_BASE
};
static const struct cpg_core_clk r8a7792_core_clks[] __initconst = {
/* External Clock Inputs */
DEF_INPUT("extal", CLK_EXTAL),
/* Internal Core Clocks */
DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
/* Core Clock Outputs */
DEF_BASE("lb", R8A7792_CLK_LB, CLK_TYPE_GEN2_LB, CLK_PLL1),
DEF_BASE("qspi", R8A7792_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2),
DEF_FIXED("z", R8A7792_CLK_Z, CLK_PLL0, 1, 1),
DEF_FIXED("zg", R8A7792_CLK_ZG, CLK_PLL1, 5, 1),
DEF_FIXED("zx", R8A7792_CLK_ZX, CLK_PLL1, 3, 1),
DEF_FIXED("zs", R8A7792_CLK_ZS, CLK_PLL1, 6, 1),
DEF_FIXED("hp", R8A7792_CLK_HP, CLK_PLL1, 12, 1),
DEF_FIXED("i", R8A7792_CLK_I, CLK_PLL1, 3, 1),
DEF_FIXED("b", R8A7792_CLK_B, CLK_PLL1, 12, 1),
DEF_FIXED("p", R8A7792_CLK_P, CLK_PLL1, 24, 1),
DEF_FIXED("cl", R8A7792_CLK_CL, CLK_PLL1, 48, 1),
DEF_FIXED("m2", R8A7792_CLK_M2, CLK_PLL1, 8, 1),
DEF_FIXED("imp", R8A7792_CLK_IMP, CLK_PLL1, 4, 1),
DEF_FIXED("zb3", R8A7792_CLK_ZB3, CLK_PLL3, 4, 1),
DEF_FIXED("zb3d2", R8A7792_CLK_ZB3D2, CLK_PLL3, 8, 1),
DEF_FIXED("ddr", R8A7792_CLK_DDR, CLK_PLL3, 8, 1),
DEF_FIXED("sd", R8A7792_CLK_SD, CLK_PLL1_DIV2, 8, 1),
DEF_FIXED("mp", R8A7792_CLK_MP, CLK_PLL1_DIV2, 15, 1),
DEF_FIXED("cp", R8A7792_CLK_CP, CLK_PLL1, 48, 1),
DEF_FIXED("cpex", R8A7792_CLK_CPEX, CLK_EXTAL, 2, 1),
DEF_FIXED("rcan", R8A7792_CLK_RCAN, CLK_PLL1_DIV2, 49, 1),
DEF_FIXED("r", R8A7792_CLK_R, CLK_PLL1, 49152, 1),
DEF_FIXED("osc", R8A7792_CLK_OSC, CLK_PLL1, 12288, 1),
};
static const struct mssr_mod_clk r8a7792_mod_clks[] __initconst = {
DEF_MOD("msiof0", 0, R8A7792_CLK_MP),
DEF_MOD("jpu", 106, R8A7792_CLK_M2),
DEF_MOD("tmu1", 111, R8A7792_CLK_P),
DEF_MOD("3dg", 112, R8A7792_CLK_ZG),
DEF_MOD("2d-dmac", 115, R8A7792_CLK_ZS),
DEF_MOD("tmu3", 121, R8A7792_CLK_P),
DEF_MOD("tmu2", 122, R8A7792_CLK_P),
DEF_MOD("cmt0", 124, R8A7792_CLK_R),
DEF_MOD("tmu0", 125, R8A7792_CLK_CP),
DEF_MOD("vsp1du1", 127, R8A7792_CLK_ZS),
DEF_MOD("vsp1du0", 128, R8A7792_CLK_ZS),
DEF_MOD("vsp1-sy", 131, R8A7792_CLK_ZS),
DEF_MOD("msiof1", 208, R8A7792_CLK_MP),
DEF_MOD("sys-dmac1", 218, R8A7792_CLK_ZS),
DEF_MOD("sys-dmac0", 219, R8A7792_CLK_ZS),
DEF_MOD("tpu0", 304, R8A7792_CLK_CP),
DEF_MOD("sdhi0", 314, R8A7792_CLK_SD),
DEF_MOD("cmt1", 329, R8A7792_CLK_R),
DEF_MOD("irqc", 407, R8A7792_CLK_CP),
DEF_MOD("intc-sys", 408, R8A7792_CLK_ZS),
DEF_MOD("audio-dmac0", 502, R8A7792_CLK_HP),
DEF_MOD("thermal", 522, CLK_EXTAL),
DEF_MOD("pwm", 523, R8A7792_CLK_P),
DEF_MOD("hscif1", 716, R8A7792_CLK_ZS),
DEF_MOD("hscif0", 717, R8A7792_CLK_ZS),
DEF_MOD("scif3", 718, R8A7792_CLK_P),
DEF_MOD("scif2", 719, R8A7792_CLK_P),
DEF_MOD("scif1", 720, R8A7792_CLK_P),
DEF_MOD("scif0", 721, R8A7792_CLK_P),
DEF_MOD("du1", 723, R8A7792_CLK_ZX),
DEF_MOD("du0", 724, R8A7792_CLK_ZX),
DEF_MOD("vin5", 804, R8A7792_CLK_ZG),
DEF_MOD("vin4", 805, R8A7792_CLK_ZG),
DEF_MOD("vin3", 808, R8A7792_CLK_ZG),
DEF_MOD("vin2", 809, R8A7792_CLK_ZG),
DEF_MOD("vin1", 810, R8A7792_CLK_ZG),
DEF_MOD("vin0", 811, R8A7792_CLK_ZG),
DEF_MOD("etheravb", 812, R8A7792_CLK_HP),
DEF_MOD("gyro-adc", 901, R8A7792_CLK_P),
DEF_MOD("gpio7", 904, R8A7792_CLK_CP),
DEF_MOD("gpio6", 905, R8A7792_CLK_CP),
DEF_MOD("gpio5", 907, R8A7792_CLK_CP),
DEF_MOD("gpio4", 908, R8A7792_CLK_CP),
DEF_MOD("gpio3", 909, R8A7792_CLK_CP),
DEF_MOD("gpio2", 910, R8A7792_CLK_CP),
DEF_MOD("gpio1", 911, R8A7792_CLK_CP),
DEF_MOD("gpio0", 912, R8A7792_CLK_CP),
DEF_MOD("gpio11", 913, R8A7792_CLK_CP),
DEF_MOD("gpio10", 914, R8A7792_CLK_CP),
DEF_MOD("can1", 915, R8A7792_CLK_P),
DEF_MOD("can0", 916, R8A7792_CLK_P),
DEF_MOD("qspi_mod", 917, R8A7792_CLK_QSPI),
DEF_MOD("gpio9", 919, R8A7792_CLK_CP),
DEF_MOD("gpio8", 921, R8A7792_CLK_CP),
DEF_MOD("i2c5", 925, R8A7792_CLK_HP),
DEF_MOD("iicdvfs", 926, R8A7792_CLK_CP),
DEF_MOD("i2c4", 927, R8A7792_CLK_HP),
DEF_MOD("i2c3", 928, R8A7792_CLK_HP),
DEF_MOD("i2c2", 929, R8A7792_CLK_HP),
DEF_MOD("i2c1", 930, R8A7792_CLK_HP),
DEF_MOD("i2c0", 931, R8A7792_CLK_HP),
DEF_MOD("ssi-all", 1005, R8A7792_CLK_P),
DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)),
DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)),
};
static const unsigned int r8a7792_crit_mod_clks[] __initconst = {
MOD_CLK_ID(408), /* INTC-SYS (GIC) */
};
/*
* CPG Clock Data
*/
/*
* MD EXTAL PLL0 PLL1 PLL3
* 14 13 19 (MHz) *1 *2
*---------------------------------------------------
* 0 0 0 15 x200/3 x208/2 x106
* 0 0 1 15 x200/3 x208/2 x88
* 0 1 0 20 x150/3 x156/2 x80
* 0 1 1 20 x150/3 x156/2 x66
* 1 0 0 26 / 2 x230/3 x240/2 x122
* 1 0 1 26 / 2 x230/3 x240/2 x102
* 1 1 0 30 / 2 x200/3 x208/2 x106
* 1 1 1 30 / 2 x200/3 x208/2 x88
*
* *1 : Table 7.5b indicates VCO output (PLL0 = VCO/3)
* *2 : Table 7.5b indicates VCO output (PLL1 = VCO/2)
*/
#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 12) | \
(((md) & BIT(13)) >> 12) | \
(((md) & BIT(19)) >> 19))
static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] __initconst = {
{ 1, 208, 106, 200 },
{ 1, 208, 88, 200 },
{ 1, 156, 80, 150 },
{ 1, 156, 66, 150 },
{ 2, 240, 122, 230 },
{ 2, 240, 102, 230 },
{ 2, 208, 106, 200 },
{ 2, 208, 88, 200 },
};
static int __init r8a7792_cpg_mssr_init(struct device *dev)
{
const struct rcar_gen2_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)];
return rcar_gen2_cpg_init(cpg_pll_config, 3, cpg_mode);
}
const struct cpg_mssr_info r8a7792_cpg_mssr_info __initconst = {
/* Core Clocks */
.core_clks = r8a7792_core_clks,
.num_core_clks = ARRAY_SIZE(r8a7792_core_clks),
.last_dt_core_clk = LAST_DT_CORE_CLK,
.num_total_core_clks = MOD_CLK_BASE,
/* Module Clocks */
.mod_clks = r8a7792_mod_clks,
.num_mod_clks = ARRAY_SIZE(r8a7792_mod_clks),
.num_hw_mod_clks = 12 * 32,
/* Critical Module Clocks */
.crit_mod_clks = r8a7792_crit_mod_clks,
.num_crit_mod_clks = ARRAY_SIZE(r8a7792_crit_mod_clks),
/* Callbacks */
.init = r8a7792_cpg_mssr_init,
.cpg_clk_register = rcar_gen2_cpg_clk_register,
};
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