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linux/drivers/clk/renesas/r8a779a0-cpg-mssr.c
Yoshihiro Shimoda 470e3f0d0b clk: renesas: rcar-gen4: Introduce R-Car Gen4 CPG driver 
According to the official website [1], the R-Car V3U SoC is based
on the R-Car Gen4 architecture. So, introduce R-Car Gen4 CPG
driver.

[1]
https://www.renesas.com/us/en/products/automotive-products/automotive-system-chips-socs/r-car-v3u-best-class-r-car-v3u-asil-d-system-chip-automated-driving

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20211201073308.1003945-9-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-12-08 10:05:22 +01:00

297 lines
10 KiB
C
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// SPDX-License-Identifier: GPL-2.0
/*
* r8a779a0 Clock Pulse Generator / Module Standby and Software Reset
*
* Copyright (C) 2020 Renesas Electronics Corp.
*
* Based on r8a7795-cpg-mssr.c
*
* Copyright (C) 2015 Glider bvba
* Copyright (C) 2015 Renesas Electronics Corp.
*/
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/soc/renesas/rcar-rst.h>
#include <dt-bindings/clock/r8a779a0-cpg-mssr.h>
#include "renesas-cpg-mssr.h"
#include "rcar-gen4-cpg.h"
enum clk_ids {
/* Core Clock Outputs exported to DT */
LAST_DT_CORE_CLK = R8A779A0_CLK_OSC,
/* External Input Clocks */
CLK_EXTAL,
CLK_EXTALR,
/* Internal Core Clocks */
CLK_MAIN,
CLK_PLL1,
CLK_PLL20,
CLK_PLL21,
CLK_PLL30,
CLK_PLL31,
CLK_PLL5,
CLK_PLL1_DIV2,
CLK_PLL20_DIV2,
CLK_PLL21_DIV2,
CLK_PLL30_DIV2,
CLK_PLL31_DIV2,
CLK_PLL5_DIV2,
CLK_PLL5_DIV4,
CLK_S1,
CLK_S3,
CLK_SDSRC,
CLK_RPCSRC,
CLK_OCO,
/* Module Clocks */
MOD_CLK_BASE
};
#define DEF_PLL(_name, _id, _offset) \
DEF_BASE(_name, _id, CLK_TYPE_GEN4_PLL2X_3X, CLK_MAIN, \
.offset = _offset)
static const struct cpg_core_clk r8a779a0_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_GEN4_MAIN, CLK_EXTAL),
DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN4_PLL1, CLK_MAIN),
DEF_BASE(".pll5", CLK_PLL5, CLK_TYPE_GEN4_PLL5, CLK_MAIN),
DEF_PLL(".pll20", CLK_PLL20, 0x0834),
DEF_PLL(".pll21", CLK_PLL21, 0x0838),
DEF_PLL(".pll30", CLK_PLL30, 0x083c),
DEF_PLL(".pll31", CLK_PLL31, 0x0840),
DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
DEF_FIXED(".pll20_div2", CLK_PLL20_DIV2, CLK_PLL20, 2, 1),
DEF_FIXED(".pll21_div2", CLK_PLL21_DIV2, CLK_PLL21, 2, 1),
DEF_FIXED(".pll30_div2", CLK_PLL30_DIV2, CLK_PLL30, 2, 1),
DEF_FIXED(".pll31_div2", CLK_PLL31_DIV2, CLK_PLL31, 2, 1),
DEF_FIXED(".pll5_div2", CLK_PLL5_DIV2, CLK_PLL5, 2, 1),
DEF_FIXED(".pll5_div4", CLK_PLL5_DIV4, CLK_PLL5_DIV2, 2, 1),
DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 4, 1),
DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL5_DIV4, 1, 1),
DEF_RATE(".oco", CLK_OCO, 32768),
DEF_BASE(".rpcsrc", CLK_RPCSRC, CLK_TYPE_GEN4_RPCSRC, CLK_PLL5),
DEF_BASE("rpc", R8A779A0_CLK_RPC, CLK_TYPE_GEN4_RPC, CLK_RPCSRC),
DEF_BASE("rpcd2", R8A779A0_CLK_RPCD2, CLK_TYPE_GEN4_RPCD2,
R8A779A0_CLK_RPC),
/* Core Clock Outputs */
DEF_GEN4_Z("z0", R8A779A0_CLK_Z0, CLK_TYPE_GEN4_Z, CLK_PLL20, 2, 0),
DEF_GEN4_Z("z1", R8A779A0_CLK_Z1, CLK_TYPE_GEN4_Z, CLK_PLL21, 2, 8),
DEF_FIXED("zx", R8A779A0_CLK_ZX, CLK_PLL20_DIV2, 2, 1),
DEF_FIXED("s1d1", R8A779A0_CLK_S1D1, CLK_S1, 1, 1),
DEF_FIXED("s1d2", R8A779A0_CLK_S1D2, CLK_S1, 2, 1),
DEF_FIXED("s1d4", R8A779A0_CLK_S1D4, CLK_S1, 4, 1),
DEF_FIXED("s1d8", R8A779A0_CLK_S1D8, CLK_S1, 8, 1),
DEF_FIXED("s1d12", R8A779A0_CLK_S1D12, CLK_S1, 12, 1),
DEF_FIXED("s3d1", R8A779A0_CLK_S3D1, CLK_S3, 1, 1),
DEF_FIXED("s3d2", R8A779A0_CLK_S3D2, CLK_S3, 2, 1),
DEF_FIXED("s3d4", R8A779A0_CLK_S3D4, CLK_S3, 4, 1),
DEF_FIXED("zs", R8A779A0_CLK_ZS, CLK_PLL1_DIV2, 4, 1),
DEF_FIXED("zt", R8A779A0_CLK_ZT, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED("ztr", R8A779A0_CLK_ZTR, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED("zr", R8A779A0_CLK_ZR, CLK_PLL1_DIV2, 1, 1),
DEF_FIXED("cnndsp", R8A779A0_CLK_CNNDSP, CLK_PLL5_DIV4, 1, 1),
DEF_FIXED("vip", R8A779A0_CLK_VIP, CLK_PLL5, 5, 1),
DEF_FIXED("adgh", R8A779A0_CLK_ADGH, CLK_PLL5_DIV4, 1, 1),
DEF_FIXED("icu", R8A779A0_CLK_ICU, CLK_PLL5_DIV4, 2, 1),
DEF_FIXED("icud2", R8A779A0_CLK_ICUD2, CLK_PLL5_DIV4, 4, 1),
DEF_FIXED("vcbus", R8A779A0_CLK_VCBUS, CLK_PLL5_DIV4, 1, 1),
DEF_FIXED("cbfusa", R8A779A0_CLK_CBFUSA, CLK_EXTAL, 2, 1),
DEF_FIXED("cp", R8A779A0_CLK_CP, CLK_EXTAL, 2, 1),
DEF_FIXED("cl16mck", R8A779A0_CLK_CL16MCK, CLK_PLL1_DIV2, 64, 1),
DEF_GEN4_SDH("sdh0", R8A779A0_CLK_SD0H, CLK_SDSRC, 0x870),
DEF_GEN4_SD("sd0", R8A779A0_CLK_SD0, R8A779A0_CLK_SD0H, 0x870),
DEF_DIV6P1("mso", R8A779A0_CLK_MSO, CLK_PLL5_DIV4, 0x87c),
DEF_DIV6P1("canfd", R8A779A0_CLK_CANFD, CLK_PLL5_DIV4, 0x878),
DEF_DIV6P1("csi0", R8A779A0_CLK_CSI0, CLK_PLL5_DIV4, 0x880),
DEF_DIV6P1("dsi", R8A779A0_CLK_DSI, CLK_PLL5_DIV4, 0x884),
DEF_GEN4_OSC("osc", R8A779A0_CLK_OSC, CLK_EXTAL, 8),
DEF_GEN4_MDSEL("r", R8A779A0_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
};
static const struct mssr_mod_clk r8a779a0_mod_clks[] __initconst = {
DEF_MOD("avb0", 211, R8A779A0_CLK_S3D2),
DEF_MOD("avb1", 212, R8A779A0_CLK_S3D2),
DEF_MOD("avb2", 213, R8A779A0_CLK_S3D2),
DEF_MOD("avb3", 214, R8A779A0_CLK_S3D2),
DEF_MOD("avb4", 215, R8A779A0_CLK_S3D2),
DEF_MOD("avb5", 216, R8A779A0_CLK_S3D2),
DEF_MOD("csi40", 331, R8A779A0_CLK_CSI0),
DEF_MOD("csi41", 400, R8A779A0_CLK_CSI0),
DEF_MOD("csi42", 401, R8A779A0_CLK_CSI0),
DEF_MOD("csi43", 402, R8A779A0_CLK_CSI0),
DEF_MOD("du", 411, R8A779A0_CLK_S3D1),
DEF_MOD("dsi0", 415, R8A779A0_CLK_DSI),
DEF_MOD("dsi1", 416, R8A779A0_CLK_DSI),
DEF_MOD("fcpvd0", 508, R8A779A0_CLK_S3D1),
DEF_MOD("fcpvd1", 509, R8A779A0_CLK_S3D1),
DEF_MOD("hscif0", 514, R8A779A0_CLK_S1D2),
DEF_MOD("hscif1", 515, R8A779A0_CLK_S1D2),
DEF_MOD("hscif2", 516, R8A779A0_CLK_S1D2),
DEF_MOD("hscif3", 517, R8A779A0_CLK_S1D2),
DEF_MOD("i2c0", 518, R8A779A0_CLK_S1D4),
DEF_MOD("i2c1", 519, R8A779A0_CLK_S1D4),
DEF_MOD("i2c2", 520, R8A779A0_CLK_S1D4),
DEF_MOD("i2c3", 521, R8A779A0_CLK_S1D4),
DEF_MOD("i2c4", 522, R8A779A0_CLK_S1D4),
DEF_MOD("i2c5", 523, R8A779A0_CLK_S1D4),
DEF_MOD("i2c6", 524, R8A779A0_CLK_S1D4),
DEF_MOD("ispcs0", 612, R8A779A0_CLK_S1D1),
DEF_MOD("ispcs1", 613, R8A779A0_CLK_S1D1),
DEF_MOD("ispcs2", 614, R8A779A0_CLK_S1D1),
DEF_MOD("ispcs3", 615, R8A779A0_CLK_S1D1),
DEF_MOD("msi0", 618, R8A779A0_CLK_MSO),
DEF_MOD("msi1", 619, R8A779A0_CLK_MSO),
DEF_MOD("msi2", 620, R8A779A0_CLK_MSO),
DEF_MOD("msi3", 621, R8A779A0_CLK_MSO),
DEF_MOD("msi4", 622, R8A779A0_CLK_MSO),
DEF_MOD("msi5", 623, R8A779A0_CLK_MSO),
DEF_MOD("rpc-if", 629, R8A779A0_CLK_RPCD2),
DEF_MOD("scif0", 702, R8A779A0_CLK_S1D8),
DEF_MOD("scif1", 703, R8A779A0_CLK_S1D8),
DEF_MOD("scif3", 704, R8A779A0_CLK_S1D8),
DEF_MOD("scif4", 705, R8A779A0_CLK_S1D8),
DEF_MOD("sdhi0", 706, R8A779A0_CLK_SD0),
DEF_MOD("sydm1", 709, R8A779A0_CLK_S1D2),
DEF_MOD("sydm2", 710, R8A779A0_CLK_S1D2),
DEF_MOD("tmu0", 713, R8A779A0_CLK_CL16MCK),
DEF_MOD("tmu1", 714, R8A779A0_CLK_S1D4),
DEF_MOD("tmu2", 715, R8A779A0_CLK_S1D4),
DEF_MOD("tmu3", 716, R8A779A0_CLK_S1D4),
DEF_MOD("tmu4", 717, R8A779A0_CLK_S1D4),
DEF_MOD("tpu0", 718, R8A779A0_CLK_S1D8),
DEF_MOD("vin00", 730, R8A779A0_CLK_S1D1),
DEF_MOD("vin01", 731, R8A779A0_CLK_S1D1),
DEF_MOD("vin02", 800, R8A779A0_CLK_S1D1),
DEF_MOD("vin03", 801, R8A779A0_CLK_S1D1),
DEF_MOD("vin04", 802, R8A779A0_CLK_S1D1),
DEF_MOD("vin05", 803, R8A779A0_CLK_S1D1),
DEF_MOD("vin06", 804, R8A779A0_CLK_S1D1),
DEF_MOD("vin07", 805, R8A779A0_CLK_S1D1),
DEF_MOD("vin10", 806, R8A779A0_CLK_S1D1),
DEF_MOD("vin11", 807, R8A779A0_CLK_S1D1),
DEF_MOD("vin12", 808, R8A779A0_CLK_S1D1),
DEF_MOD("vin13", 809, R8A779A0_CLK_S1D1),
DEF_MOD("vin14", 810, R8A779A0_CLK_S1D1),
DEF_MOD("vin15", 811, R8A779A0_CLK_S1D1),
DEF_MOD("vin16", 812, R8A779A0_CLK_S1D1),
DEF_MOD("vin17", 813, R8A779A0_CLK_S1D1),
DEF_MOD("vin20", 814, R8A779A0_CLK_S1D1),
DEF_MOD("vin21", 815, R8A779A0_CLK_S1D1),
DEF_MOD("vin22", 816, R8A779A0_CLK_S1D1),
DEF_MOD("vin23", 817, R8A779A0_CLK_S1D1),
DEF_MOD("vin24", 818, R8A779A0_CLK_S1D1),
DEF_MOD("vin25", 819, R8A779A0_CLK_S1D1),
DEF_MOD("vin26", 820, R8A779A0_CLK_S1D1),
DEF_MOD("vin27", 821, R8A779A0_CLK_S1D1),
DEF_MOD("vin30", 822, R8A779A0_CLK_S1D1),
DEF_MOD("vin31", 823, R8A779A0_CLK_S1D1),
DEF_MOD("vin32", 824, R8A779A0_CLK_S1D1),
DEF_MOD("vin33", 825, R8A779A0_CLK_S1D1),
DEF_MOD("vin34", 826, R8A779A0_CLK_S1D1),
DEF_MOD("vin35", 827, R8A779A0_CLK_S1D1),
DEF_MOD("vin36", 828, R8A779A0_CLK_S1D1),
DEF_MOD("vin37", 829, R8A779A0_CLK_S1D1),
DEF_MOD("vspd0", 830, R8A779A0_CLK_S3D1),
DEF_MOD("vspd1", 831, R8A779A0_CLK_S3D1),
DEF_MOD("rwdt", 907, R8A779A0_CLK_R),
DEF_MOD("cmt0", 910, R8A779A0_CLK_R),
DEF_MOD("cmt1", 911, R8A779A0_CLK_R),
DEF_MOD("cmt2", 912, R8A779A0_CLK_R),
DEF_MOD("cmt3", 913, R8A779A0_CLK_R),
DEF_MOD("pfc0", 915, R8A779A0_CLK_CP),
DEF_MOD("pfc1", 916, R8A779A0_CLK_CP),
DEF_MOD("pfc2", 917, R8A779A0_CLK_CP),
DEF_MOD("pfc3", 918, R8A779A0_CLK_CP),
DEF_MOD("tsc", 919, R8A779A0_CLK_CL16MCK),
DEF_MOD("vspx0", 1028, R8A779A0_CLK_S1D1),
DEF_MOD("vspx1", 1029, R8A779A0_CLK_S1D1),
DEF_MOD("vspx2", 1030, R8A779A0_CLK_S1D1),
DEF_MOD("vspx3", 1031, R8A779A0_CLK_S1D1),
};
static const unsigned int r8a779a0_crit_mod_clks[] __initconst = {
MOD_CLK_ID(907), /* RWDT */
};
/*
* CPG Clock Data
*/
/*
* MD EXTAL PLL1 PLL20 PLL30 PLL4 PLL5 OSC
* 14 13 (MHz) 21 31
* --------------------------------------------------------
* 0 0 16.66 x 1 x128 x216 x128 x144 x192 /16
* 0 1 20 x 1 x106 x180 x106 x120 x160 /19
* 1 0 Prohibited setting
* 1 1 33.33 / 2 x128 x216 x128 x144 x192 /32
*/
#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 13) | \
(((md) & BIT(13)) >> 13))
static const struct rcar_gen4_cpg_pll_config cpg_pll_configs[4] = {
/* EXTAL div PLL1 mult/div PLL2 mult/div PLL3 mult/div PLL5 mult/div PLL6 mult/div OSC prediv */
{ 1, 128, 1, 0, 0, 0, 0, 192, 1, 0, 0, 16, },
{ 1, 106, 1, 0, 0, 0, 0, 160, 1, 0, 0, 19, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 2, 128, 1, 0, 0, 0, 0, 192, 1, 0, 0, 32, },
};
static int __init r8a779a0_cpg_mssr_init(struct device *dev)
{
const struct rcar_gen4_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_gen4_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
}
const struct cpg_mssr_info r8a779a0_cpg_mssr_info __initconst = {
/* Core Clocks */
.core_clks = r8a779a0_core_clks,
.num_core_clks = ARRAY_SIZE(r8a779a0_core_clks),
.last_dt_core_clk = LAST_DT_CORE_CLK,
.num_total_core_clks = MOD_CLK_BASE,
/* Module Clocks */
.mod_clks = r8a779a0_mod_clks,
.num_mod_clks = ARRAY_SIZE(r8a779a0_mod_clks),
.num_hw_mod_clks = 15 * 32,
/* Critical Module Clocks */
.crit_mod_clks = r8a779a0_crit_mod_clks,
.num_crit_mod_clks = ARRAY_SIZE(r8a779a0_crit_mod_clks),
/* Callbacks */
.init = r8a779a0_cpg_mssr_init,
.cpg_clk_register = rcar_gen4_cpg_clk_register,
.reg_layout = CLK_REG_LAYOUT_RCAR_GEN4,
};
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