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linux/drivers/clk/renesas/r8a779g0-cpg-mssr.c
Yoshihiro Shimoda 5ab16198b4 clk: renesas: r8a779g0: Add PCIe clocks 
Add the PCIe module clocks, which are used by the PCIe modules on the
Renesas R-Car V4H (R8A779G0) SoC.  Note that the following descriptions
in the hardware manual Rev.0.81 about the PCIe module clocks are
incorrect:

    9.2.1.7 Software Reset Register 6 (SRCR6)
    9.2.1.12 Software Reset Register 11 (SRCR11)
    9.2.3.7 Module Stop Control Register 6 (MSTPCR6)

Please refer to Figures 104.3[ab] instead.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231114122252.2266799-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-11-20 09:17:15 +01:00

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// SPDX-License-Identifier: GPL-2.0
/*
* r8a779g0 Clock Pulse Generator / Module Standby and Software Reset
*
* Copyright (C) 2022 Renesas Electronics Corp.
*
* Based on r8a779f0-cpg-mssr.c
*/
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/soc/renesas/rcar-rst.h>
#include <dt-bindings/clock/r8a779g0-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 = R8A779G0_CLK_R,
/* External Input Clocks */
CLK_EXTAL,
CLK_EXTALR,
/* Internal Core Clocks */
CLK_MAIN,
CLK_PLL1,
CLK_PLL2,
CLK_PLL3,
CLK_PLL4,
CLK_PLL5,
CLK_PLL6,
CLK_PLL1_DIV2,
CLK_PLL2_DIV2,
CLK_PLL3_DIV2,
CLK_PLL4_DIV2,
CLK_PLL5_DIV2,
CLK_PLL5_DIV4,
CLK_PLL6_DIV2,
CLK_S0,
CLK_S0_VIO,
CLK_S0_VC,
CLK_S0_HSC,
CLK_SASYNCPER,
CLK_SV_VIP,
CLK_SV_IR,
CLK_SDSRC,
CLK_RPCSRC,
CLK_VIO,
CLK_VC,
CLK_OCO,
/* Module Clocks */
MOD_CLK_BASE
};
static const struct cpg_core_clk r8a779g0_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(".pll2", CLK_PLL2, CLK_TYPE_GEN4_PLL2_VAR, CLK_MAIN),
DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN4_PLL3, CLK_MAIN),
DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN4_PLL4, CLK_MAIN),
DEF_BASE(".pll5", CLK_PLL5, CLK_TYPE_GEN4_PLL5, CLK_MAIN),
DEF_BASE(".pll6", CLK_PLL6, CLK_TYPE_GEN4_PLL6, CLK_MAIN),
DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 2, 1),
DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 2, 1),
DEF_FIXED(".pll4_div2", CLK_PLL4_DIV2, CLK_PLL4, 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(".pll6_div2", CLK_PLL6_DIV2, CLK_PLL6, 2, 1),
DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".s0_vio", CLK_S0_VIO, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".s0_vc", CLK_S0_VC, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".s0_hsc", CLK_S0_HSC, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED(".sasyncper", CLK_SASYNCPER, CLK_PLL5_DIV4, 3, 1),
DEF_FIXED(".sv_vip", CLK_SV_VIP, CLK_PLL1, 5, 1),
DEF_FIXED(".sv_ir", CLK_SV_IR, CLK_PLL1, 5, 1),
DEF_BASE(".sdsrc", CLK_SDSRC, CLK_TYPE_GEN4_SDSRC, CLK_PLL5),
DEF_RATE(".oco", CLK_OCO, 32768),
DEF_BASE(".rpcsrc", CLK_RPCSRC, CLK_TYPE_GEN4_RPCSRC, CLK_PLL5),
DEF_FIXED(".vio", CLK_VIO, CLK_PLL5_DIV2, 3, 1),
DEF_FIXED(".vc", CLK_VC, CLK_PLL5_DIV2, 3, 1),
/* Core Clock Outputs */
DEF_GEN4_Z("z0", R8A779G0_CLK_Z0, CLK_TYPE_GEN4_Z, CLK_PLL2, 2, 0),
DEF_FIXED("s0d2", R8A779G0_CLK_S0D2, CLK_S0, 2, 1),
DEF_FIXED("s0d3", R8A779G0_CLK_S0D3, CLK_S0, 3, 1),
DEF_FIXED("s0d4", R8A779G0_CLK_S0D4, CLK_S0, 4, 1),
DEF_FIXED("cl16m", R8A779G0_CLK_CL16M, CLK_S0, 48, 1),
DEF_FIXED("s0d1_vio", R8A779G0_CLK_S0D1_VIO, CLK_S0_VIO, 1, 1),
DEF_FIXED("s0d2_vio", R8A779G0_CLK_S0D2_VIO, CLK_S0_VIO, 2, 1),
DEF_FIXED("s0d4_vio", R8A779G0_CLK_S0D4_VIO, CLK_S0_VIO, 4, 1),
DEF_FIXED("s0d8_vio", R8A779G0_CLK_S0D8_VIO, CLK_S0_VIO, 8, 1),
DEF_FIXED("s0d1_vc", R8A779G0_CLK_S0D1_VC, CLK_S0_VC, 1, 1),
DEF_FIXED("s0d2_vc", R8A779G0_CLK_S0D2_VC, CLK_S0_VC, 2, 1),
DEF_FIXED("s0d4_vc", R8A779G0_CLK_S0D4_VC, CLK_S0_VC, 4, 1),
DEF_FIXED("s0d2_mm", R8A779G0_CLK_S0D2_MM, CLK_S0, 2, 1),
DEF_FIXED("s0d4_mm", R8A779G0_CLK_S0D4_MM, CLK_S0, 4, 1),
DEF_FIXED("cl16m_mm", R8A779G0_CLK_CL16M_MM, CLK_S0, 48, 1),
DEF_FIXED("s0d2_u3dg", R8A779G0_CLK_S0D2_U3DG, CLK_S0, 2, 1),
DEF_FIXED("s0d4_u3dg", R8A779G0_CLK_S0D4_U3DG, CLK_S0, 4, 1),
DEF_FIXED("s0d2_rt", R8A779G0_CLK_S0D2_RT, CLK_S0, 2, 1),
DEF_FIXED("s0d3_rt", R8A779G0_CLK_S0D3_RT, CLK_S0, 3, 1),
DEF_FIXED("s0d4_rt", R8A779G0_CLK_S0D4_RT, CLK_S0, 4, 1),
DEF_FIXED("s0d6_rt", R8A779G0_CLK_S0D6_RT, CLK_S0, 6, 1),
DEF_FIXED("s0d24_rt", R8A779G0_CLK_S0D24_RT, CLK_S0, 24, 1),
DEF_FIXED("cl16m_rt", R8A779G0_CLK_CL16M_RT, CLK_S0, 48, 1),
DEF_FIXED("s0d2_per", R8A779G0_CLK_S0D2_PER, CLK_S0, 2, 1),
DEF_FIXED("s0d3_per", R8A779G0_CLK_S0D3_PER, CLK_S0, 3, 1),
DEF_FIXED("s0d4_per", R8A779G0_CLK_S0D4_PER, CLK_S0, 4, 1),
DEF_FIXED("s0d6_per", R8A779G0_CLK_S0D6_PER, CLK_S0, 6, 1),
DEF_FIXED("s0d12_per", R8A779G0_CLK_S0D12_PER, CLK_S0, 12, 1),
DEF_FIXED("s0d24_per", R8A779G0_CLK_S0D24_PER, CLK_S0, 24, 1),
DEF_FIXED("cl16m_per", R8A779G0_CLK_CL16M_PER, CLK_S0, 48, 1),
DEF_FIXED("s0d1_hsc", R8A779G0_CLK_S0D1_HSC, CLK_S0_HSC, 1, 1),
DEF_FIXED("s0d2_hsc", R8A779G0_CLK_S0D2_HSC, CLK_S0_HSC, 2, 1),
DEF_FIXED("s0d4_hsc", R8A779G0_CLK_S0D4_HSC, CLK_S0_HSC, 4, 1),
DEF_FIXED("cl16m_hsc", R8A779G0_CLK_CL16M_HSC, CLK_S0_HSC, 48, 1),
DEF_FIXED("s0d2_cc", R8A779G0_CLK_S0D2_CC, CLK_S0, 2, 1),
DEF_FIXED("sasyncrt", R8A779G0_CLK_SASYNCRT, CLK_PLL5_DIV4, 48, 1),
DEF_FIXED("sasyncperd1",R8A779G0_CLK_SASYNCPERD1, CLK_SASYNCPER,1, 1),
DEF_FIXED("sasyncperd2",R8A779G0_CLK_SASYNCPERD2, CLK_SASYNCPER,2, 1),
DEF_FIXED("sasyncperd4",R8A779G0_CLK_SASYNCPERD4, CLK_SASYNCPER,4, 1),
DEF_FIXED("svd1_ir", R8A779G0_CLK_SVD1_IR, CLK_SV_IR, 1, 1),
DEF_FIXED("svd2_ir", R8A779G0_CLK_SVD2_IR, CLK_SV_IR, 2, 1),
DEF_FIXED("svd1_vip", R8A779G0_CLK_SVD1_VIP, CLK_SV_VIP, 1, 1),
DEF_FIXED("svd2_vip", R8A779G0_CLK_SVD2_VIP, CLK_SV_VIP, 2, 1),
DEF_FIXED("cbfusa", R8A779G0_CLK_CBFUSA, CLK_EXTAL, 2, 1),
DEF_FIXED("cpex", R8A779G0_CLK_CPEX, CLK_EXTAL, 2, 1),
DEF_FIXED("viobus", R8A779G0_CLK_VIOBUS, CLK_VIO, 1, 1),
DEF_FIXED("viobusd2", R8A779G0_CLK_VIOBUSD2, CLK_VIO, 2, 1),
DEF_FIXED("vcbus", R8A779G0_CLK_VCBUS, CLK_VC, 1, 1),
DEF_FIXED("vcbusd2", R8A779G0_CLK_VCBUSD2, CLK_VC, 2, 1),
DEF_DIV6P1("canfd", R8A779G0_CLK_CANFD, CLK_PLL5_DIV4, 0x878),
DEF_DIV6P1("csi", R8A779G0_CLK_CSI, CLK_PLL5_DIV4, 0x880),
DEF_FIXED("dsiref", R8A779G0_CLK_DSIREF, CLK_PLL5_DIV4, 48, 1),
DEF_DIV6P1("dsiext", R8A779G0_CLK_DSIEXT, CLK_PLL5_DIV4, 0x884),
DEF_GEN4_SDH("sd0h", R8A779G0_CLK_SD0H, CLK_SDSRC, 0x870),
DEF_GEN4_SD("sd0", R8A779G0_CLK_SD0, R8A779G0_CLK_SD0H, 0x870),
DEF_DIV6P1("mso", R8A779G0_CLK_MSO, CLK_PLL5_DIV4, 0x87c),
DEF_BASE("rpc", R8A779G0_CLK_RPC, CLK_TYPE_GEN4_RPC, CLK_RPCSRC),
DEF_BASE("rpcd2", R8A779G0_CLK_RPCD2, CLK_TYPE_GEN4_RPCD2, R8A779G0_CLK_RPC),
DEF_GEN4_OSC("osc", R8A779G0_CLK_OSC, CLK_EXTAL, 8),
DEF_GEN4_MDSEL("r", R8A779G0_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
};
static const struct mssr_mod_clk r8a779g0_mod_clks[] __initconst = {
DEF_MOD("avb0", 211, R8A779G0_CLK_S0D4_HSC),
DEF_MOD("avb1", 212, R8A779G0_CLK_S0D4_HSC),
DEF_MOD("avb2", 213, R8A779G0_CLK_S0D4_HSC),
DEF_MOD("canfd0", 328, R8A779G0_CLK_SASYNCPERD2),
DEF_MOD("csi40", 331, R8A779G0_CLK_CSI),
DEF_MOD("csi41", 400, R8A779G0_CLK_CSI),
DEF_MOD("dis0", 411, R8A779G0_CLK_VIOBUSD2),
DEF_MOD("dsitxlink0", 415, R8A779G0_CLK_VIOBUSD2),
DEF_MOD("dsitxlink1", 416, R8A779G0_CLK_VIOBUSD2),
DEF_MOD("fcpvd0", 508, R8A779G0_CLK_VIOBUSD2),
DEF_MOD("fcpvd1", 509, R8A779G0_CLK_VIOBUSD2),
DEF_MOD("hscif0", 514, R8A779G0_CLK_SASYNCPERD1),
DEF_MOD("hscif1", 515, R8A779G0_CLK_SASYNCPERD1),
DEF_MOD("hscif2", 516, R8A779G0_CLK_SASYNCPERD1),
DEF_MOD("hscif3", 517, R8A779G0_CLK_SASYNCPERD1),
DEF_MOD("i2c0", 518, R8A779G0_CLK_S0D6_PER),
DEF_MOD("i2c1", 519, R8A779G0_CLK_S0D6_PER),
DEF_MOD("i2c2", 520, R8A779G0_CLK_S0D6_PER),
DEF_MOD("i2c3", 521, R8A779G0_CLK_S0D6_PER),
DEF_MOD("i2c4", 522, R8A779G0_CLK_S0D6_PER),
DEF_MOD("i2c5", 523, R8A779G0_CLK_S0D6_PER),
DEF_MOD("irqc", 611, R8A779G0_CLK_CL16M),
DEF_MOD("ispcs0", 612, R8A779G0_CLK_S0D2_VIO),
DEF_MOD("ispcs1", 613, R8A779G0_CLK_S0D2_VIO),
DEF_MOD("msi0", 618, R8A779G0_CLK_MSO),
DEF_MOD("msi1", 619, R8A779G0_CLK_MSO),
DEF_MOD("msi2", 620, R8A779G0_CLK_MSO),
DEF_MOD("msi3", 621, R8A779G0_CLK_MSO),
DEF_MOD("msi4", 622, R8A779G0_CLK_MSO),
DEF_MOD("msi5", 623, R8A779G0_CLK_MSO),
DEF_MOD("pciec0", 624, R8A779G0_CLK_S0D2_HSC),
DEF_MOD("pscie1", 625, R8A779G0_CLK_S0D2_HSC),
DEF_MOD("pwm", 628, R8A779G0_CLK_SASYNCPERD4),
DEF_MOD("rpc-if", 629, R8A779G0_CLK_RPCD2),
DEF_MOD("scif0", 702, R8A779G0_CLK_SASYNCPERD4),
DEF_MOD("scif1", 703, R8A779G0_CLK_SASYNCPERD4),
DEF_MOD("scif3", 704, R8A779G0_CLK_SASYNCPERD4),
DEF_MOD("scif4", 705, R8A779G0_CLK_SASYNCPERD4),
DEF_MOD("sdhi", 706, R8A779G0_CLK_SD0),
DEF_MOD("sys-dmac0", 709, R8A779G0_CLK_S0D6_PER),
DEF_MOD("sys-dmac1", 710, R8A779G0_CLK_S0D6_PER),
DEF_MOD("tmu0", 713, R8A779G0_CLK_SASYNCRT),
DEF_MOD("tmu1", 714, R8A779G0_CLK_SASYNCPERD2),
DEF_MOD("tmu2", 715, R8A779G0_CLK_SASYNCPERD2),
DEF_MOD("tmu3", 716, R8A779G0_CLK_SASYNCPERD2),
DEF_MOD("tmu4", 717, R8A779G0_CLK_SASYNCPERD2),
DEF_MOD("tpu0", 718, R8A779G0_CLK_SASYNCPERD4),
DEF_MOD("vin00", 730, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin01", 731, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin02", 800, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin03", 801, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin04", 802, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin05", 803, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin06", 804, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin07", 805, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin10", 806, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin11", 807, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin12", 808, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin13", 809, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin14", 810, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin15", 811, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin16", 812, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vin17", 813, R8A779G0_CLK_S0D4_VIO),
DEF_MOD("vspd0", 830, R8A779G0_CLK_VIOBUSD2),
DEF_MOD("vspd1", 831, R8A779G0_CLK_VIOBUSD2),
DEF_MOD("wdt1:wdt0", 907, R8A779G0_CLK_R),
DEF_MOD("cmt0", 910, R8A779G0_CLK_R),
DEF_MOD("cmt1", 911, R8A779G0_CLK_R),
DEF_MOD("cmt2", 912, R8A779G0_CLK_R),
DEF_MOD("cmt3", 913, R8A779G0_CLK_R),
DEF_MOD("pfc0", 915, R8A779G0_CLK_CL16M),
DEF_MOD("pfc1", 916, R8A779G0_CLK_CL16M),
DEF_MOD("pfc2", 917, R8A779G0_CLK_CL16M),
DEF_MOD("pfc3", 918, R8A779G0_CLK_CL16M),
DEF_MOD("tsc", 919, R8A779G0_CLK_CL16M),
DEF_MOD("tsn", 2723, R8A779G0_CLK_S0D4_HSC),
DEF_MOD("ssiu", 2926, R8A779G0_CLK_S0D6_PER),
DEF_MOD("ssi", 2927, R8A779G0_CLK_S0D6_PER),
};
/*
* CPG Clock Data
*/
/*
* MD EXTAL PLL1 PLL2 PLL3 PLL4 PLL5 PLL6 OSC
* 14 13 (MHz)
* ------------------------------------------------------------------------
* 0 0 16.66 / 1 x192 x204 x192 x144 x192 x168 /16
* 0 1 20 / 1 x160 x170 x160 x120 x160 x140 /19
* 1 0 Prohibited setting
* 1 1 33.33 / 2 x192 x204 x192 x144 x192 x168 /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 PLL4 mult/div PLL5 mult/div PLL6 mult/div OSC prediv */
{ 1, 192, 1, 204, 1, 192, 1, 144, 1, 192, 1, 168, 1, 16, },
{ 1, 160, 1, 170, 1, 160, 1, 120, 1, 160, 1, 140, 1, 19, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 2, 192, 1, 204, 1, 192, 1, 144, 1, 192, 1, 168, 1, 32, },
};
static int __init r8a779g0_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)];
if (!cpg_pll_config->extal_div) {
dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
return -EINVAL;
}
return rcar_gen4_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
}
const struct cpg_mssr_info r8a779g0_cpg_mssr_info __initconst = {
/* Core Clocks */
.core_clks = r8a779g0_core_clks,
.num_core_clks = ARRAY_SIZE(r8a779g0_core_clks),
.last_dt_core_clk = LAST_DT_CORE_CLK,
.num_total_core_clks = MOD_CLK_BASE,
/* Module Clocks */
.mod_clks = r8a779g0_mod_clks,
.num_mod_clks = ARRAY_SIZE(r8a779g0_mod_clks),
.num_hw_mod_clks = 30 * 32,
/* Callbacks */
.init = r8a779g0_cpg_mssr_init,
.cpg_clk_register = rcar_gen4_cpg_clk_register,
.reg_layout = CLK_REG_LAYOUT_RCAR_GEN4,
};
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