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linux/drivers/clk/renesas/r8a77980-cpg-mssr.c

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// SPDX-License-Identifier: GPL-2.0
/*
* r8a77980 Clock Pulse Generator / Module Standby and Software Reset
*
* Copyright (C) 2018 Renesas Electronics Corp.
* Copyright (C) 2018 Cogent Embedded, Inc.
*
* Based on r8a7795-cpg-mssr.c
*
* Copyright (C) 2015 Glider bvba
*/
#include <linux/device.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/soc/renesas/rcar-rst.h>
#include <linux/sys_soc.h>
#include <dt-bindings/clock/r8a77980-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 = R8A77980_CLK_OSC,
/* External Input Clocks */
CLK_EXTAL,
CLK_EXTALR,
/* Internal Core Clocks */
CLK_MAIN,
CLK_PLL1,
CLK_PLL2,
CLK_PLL3,
CLK_PLL1_DIV2,
CLK_PLL1_DIV4,
CLK_S0,
CLK_S1,
CLK_S2,
CLK_S3,
CLK_SDSRC,
CLK_OCO,
/* Module Clocks */
MOD_CLK_BASE
};
static const struct cpg_core_clk r8a77980_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(".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_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),
DEF_RATE(".oco", CLK_OCO, 32768),
/* Core Clock Outputs */
DEF_FIXED("ztr", R8A77980_CLK_ZTR, CLK_PLL1_DIV2, 6, 1),
DEF_FIXED("ztrd2", R8A77980_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1),
DEF_FIXED("zt", R8A77980_CLK_ZT, CLK_PLL1_DIV2, 4, 1),
DEF_FIXED("zx", R8A77980_CLK_ZX, CLK_PLL1_DIV2, 2, 1),
DEF_FIXED("s0d1", R8A77980_CLK_S0D1, CLK_S0, 1, 1),
DEF_FIXED("s0d2", R8A77980_CLK_S0D2, CLK_S0, 2, 1),
DEF_FIXED("s0d3", R8A77980_CLK_S0D3, CLK_S0, 3, 1),
DEF_FIXED("s0d4", R8A77980_CLK_S0D4, CLK_S0, 4, 1),
DEF_FIXED("s0d6", R8A77980_CLK_S0D6, CLK_S0, 6, 1),
DEF_FIXED("s0d12", R8A77980_CLK_S0D12, CLK_S0, 12, 1),
DEF_FIXED("s0d24", R8A77980_CLK_S0D24, CLK_S0, 24, 1),
DEF_FIXED("s1d1", R8A77980_CLK_S1D1, CLK_S1, 1, 1),
DEF_FIXED("s1d2", R8A77980_CLK_S1D2, CLK_S1, 2, 1),
DEF_FIXED("s1d4", R8A77980_CLK_S1D4, CLK_S1, 4, 1),
DEF_FIXED("s2d1", R8A77980_CLK_S2D1, CLK_S2, 1, 1),
DEF_FIXED("s2d2", R8A77980_CLK_S2D2, CLK_S2, 2, 1),
DEF_FIXED("s2d4", R8A77980_CLK_S2D4, CLK_S2, 4, 1),
DEF_FIXED("s3d1", R8A77980_CLK_S3D1, CLK_S3, 1, 1),
DEF_FIXED("s3d2", R8A77980_CLK_S3D2, CLK_S3, 2, 1),
DEF_FIXED("s3d4", R8A77980_CLK_S3D4, CLK_S3, 4, 1),
DEF_GEN3_SD("sd0", R8A77980_CLK_SD0, CLK_SDSRC, 0x0074),
DEF_FIXED("cl", R8A77980_CLK_CL, CLK_PLL1_DIV2, 48, 1),
DEF_FIXED("cp", R8A77980_CLK_CP, CLK_EXTAL, 2, 1),
DEF_FIXED("cpex", R8A77980_CLK_CPEX, CLK_EXTAL, 2, 1),
DEF_DIV6P1("canfd", R8A77980_CLK_CANFD, CLK_PLL1_DIV4, 0x244),
DEF_DIV6P1("csi0", R8A77980_CLK_CSI0, CLK_PLL1_DIV4, 0x00c),
DEF_DIV6P1("mso", R8A77980_CLK_MSO, CLK_PLL1_DIV4, 0x014),
DEF_GEN3_OSC("osc", R8A77980_CLK_OSC, CLK_EXTAL, 8),
DEF_GEN3_MDSEL("r", R8A77980_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
};
static const struct mssr_mod_clk r8a77980_mod_clks[] __initconst = {
DEF_MOD("tmu4", 121, R8A77980_CLK_S0D6),
DEF_MOD("tmu3", 122, R8A77980_CLK_S0D6),
DEF_MOD("tmu2", 123, R8A77980_CLK_S0D6),
DEF_MOD("tmu1", 124, R8A77980_CLK_S0D6),
DEF_MOD("tmu0", 125, R8A77980_CLK_CP),
DEF_MOD("scif4", 203, R8A77980_CLK_S3D4),
DEF_MOD("scif3", 204, R8A77980_CLK_S3D4),
DEF_MOD("scif1", 206, R8A77980_CLK_S3D4),
DEF_MOD("scif0", 207, R8A77980_CLK_S3D4),
DEF_MOD("msiof3", 208, R8A77980_CLK_MSO),
DEF_MOD("msiof2", 209, R8A77980_CLK_MSO),
DEF_MOD("msiof1", 210, R8A77980_CLK_MSO),
DEF_MOD("msiof0", 211, R8A77980_CLK_MSO),
DEF_MOD("sys-dmac2", 217, R8A77980_CLK_S0D3),
DEF_MOD("sys-dmac1", 218, R8A77980_CLK_S0D3),
DEF_MOD("cmt3", 300, R8A77980_CLK_R),
DEF_MOD("cmt2", 301, R8A77980_CLK_R),
DEF_MOD("cmt1", 302, R8A77980_CLK_R),
DEF_MOD("cmt0", 303, R8A77980_CLK_R),
DEF_MOD("tpu0", 304, R8A77980_CLK_S3D4),
DEF_MOD("sdif", 314, R8A77980_CLK_SD0),
DEF_MOD("pciec0", 319, R8A77980_CLK_S2D2),
DEF_MOD("rwdt", 402, R8A77980_CLK_R),
DEF_MOD("intc-ex", 407, R8A77980_CLK_CP),
DEF_MOD("intc-ap", 408, R8A77980_CLK_S0D3),
DEF_MOD("hscif3", 517, R8A77980_CLK_S3D1),
DEF_MOD("hscif2", 518, R8A77980_CLK_S3D1),
DEF_MOD("hscif1", 519, R8A77980_CLK_S3D1),
DEF_MOD("hscif0", 520, R8A77980_CLK_S3D1),
DEF_MOD("imp4", 521, R8A77980_CLK_S1D1),
DEF_MOD("thermal", 522, R8A77980_CLK_CP),
DEF_MOD("pwm", 523, R8A77980_CLK_S0D12),
DEF_MOD("impdma1", 526, R8A77980_CLK_S1D1),
DEF_MOD("impdma0", 527, R8A77980_CLK_S1D1),
DEF_MOD("imp-ocv4", 528, R8A77980_CLK_S1D1),
DEF_MOD("imp-ocv3", 529, R8A77980_CLK_S1D1),
DEF_MOD("imp-ocv2", 531, R8A77980_CLK_S1D1),
DEF_MOD("fcpvd0", 603, R8A77980_CLK_S3D1),
DEF_MOD("vspd0", 623, R8A77980_CLK_S3D1),
DEF_MOD("csi41", 715, R8A77980_CLK_CSI0),
DEF_MOD("csi40", 716, R8A77980_CLK_CSI0),
DEF_MOD("du0", 724, R8A77980_CLK_S2D1),
DEF_MOD("lvds", 727, R8A77980_CLK_S2D1),
DEF_MOD("etheravb", 812, R8A77980_CLK_S3D2),
DEF_MOD("gether", 813, R8A77980_CLK_S3D2),
DEF_MOD("imp3", 824, R8A77980_CLK_S1D1),
DEF_MOD("imp2", 825, R8A77980_CLK_S1D1),
DEF_MOD("imp1", 826, R8A77980_CLK_S1D1),
DEF_MOD("imp0", 827, R8A77980_CLK_S1D1),
DEF_MOD("imp-ocv1", 828, R8A77980_CLK_S1D1),
DEF_MOD("imp-ocv0", 829, R8A77980_CLK_S1D1),
DEF_MOD("impram", 830, R8A77980_CLK_S1D1),
DEF_MOD("impcnn", 831, R8A77980_CLK_S1D1),
DEF_MOD("gpio5", 907, R8A77980_CLK_CP),
DEF_MOD("gpio4", 908, R8A77980_CLK_CP),
DEF_MOD("gpio3", 909, R8A77980_CLK_CP),
DEF_MOD("gpio2", 910, R8A77980_CLK_CP),
DEF_MOD("gpio1", 911, R8A77980_CLK_CP),
DEF_MOD("gpio0", 912, R8A77980_CLK_CP),
DEF_MOD("can-fd", 914, R8A77980_CLK_S3D2),
DEF_MOD("i2c4", 927, R8A77980_CLK_S0D6),
DEF_MOD("i2c3", 928, R8A77980_CLK_S0D6),
DEF_MOD("i2c2", 929, R8A77980_CLK_S3D2),
DEF_MOD("i2c1", 930, R8A77980_CLK_S3D2),
DEF_MOD("i2c0", 931, R8A77980_CLK_S3D2),
};
static const unsigned int r8a77980_crit_mod_clks[] __initconst = {
MOD_CLK_ID(408), /* INTC-AP (GIC) */
};
/*
* CPG Clock Data
*/
/*
* MD EXTAL PLL2 PLL1 PLL3 OSC
* 14 13 (MHz)
* --------------------------------------------------------
* 0 0 16.66 x 1 x240 x192 x192 /16
* 0 1 20 x 1 x200 x160 x160 /19
* 1 0 27 x 1 x148 x118 x118 /26
* 1 1 33.33 / 2 x240 x192 x192 /32
*/
#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 13) | \
(((md) & BIT(13)) >> 13))
static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[4] __initconst = {
/* EXTAL div PLL1 mult/div PLL3 mult/div OSC prediv */
{ 1, 192, 1, 192, 1, 16, },
{ 1, 160, 1, 160, 1, 19, },
{ 1, 118, 1, 118, 1, 26, },
{ 2, 192, 1, 192, 1, 32, },
};
static int __init r8a77980_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)];
return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
}
const struct cpg_mssr_info r8a77980_cpg_mssr_info __initconst = {
/* Core Clocks */
.core_clks = r8a77980_core_clks,
.num_core_clks = ARRAY_SIZE(r8a77980_core_clks),
.last_dt_core_clk = LAST_DT_CORE_CLK,
.num_total_core_clks = MOD_CLK_BASE,
/* Module Clocks */
.mod_clks = r8a77980_mod_clks,
.num_mod_clks = ARRAY_SIZE(r8a77980_mod_clks),
.num_hw_mod_clks = 12 * 32,
/* Critical Module Clocks */
.crit_mod_clks = r8a77980_crit_mod_clks,
.num_crit_mod_clks = ARRAY_SIZE(r8a77980_crit_mod_clks),
/* Callbacks */
.init = r8a77980_cpg_mssr_init,
.cpg_clk_register = rcar_gen3_cpg_clk_register,
};
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