diff options
Diffstat (limited to 'drivers/clk/renesas/r8a77970-cpg-mssr.c')
| -rw-r--r-- | drivers/clk/renesas/r8a77970-cpg-mssr.c | 81 |
1 files changed, 75 insertions, 6 deletions
diff --git a/drivers/clk/renesas/r8a77970-cpg-mssr.c b/drivers/clk/renesas/r8a77970-cpg-mssr.c index f55842917e8d..2015e45543e9 100644 --- a/drivers/clk/renesas/r8a77970-cpg-mssr.c +++ b/drivers/clk/renesas/r8a77970-cpg-mssr.c @@ -1,17 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0 /* * r8a77970 Clock Pulse Generator / Module Standby and Software Reset * - * Copyright (C) 2017 Cogent Embedded Inc. + * Copyright (C) 2017-2018 Cogent Embedded Inc. * * Based on r8a7795-cpg-mssr.c * * Copyright (C) 2015 Glider bvba - * - * 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/clk-provider.h> #include <linux/device.h> #include <linux/init.h> #include <linux/kernel.h> @@ -22,6 +20,13 @@ #include "renesas-cpg-mssr.h" #include "rcar-gen3-cpg.h" +#define CPG_SD0CKCR 0x0074 + +enum r8a77970_clk_types { + CLK_TYPE_R8A77970_SD0H = CLK_TYPE_GEN3_SOC_BASE, + CLK_TYPE_R8A77970_SD0, +}; + enum clk_ids { /* Core Clock Outputs exported to DT */ LAST_DT_CORE_CLK = R8A77970_CLK_OSC, @@ -42,6 +47,20 @@ enum clk_ids { MOD_CLK_BASE }; +static spinlock_t cpg_lock; + +static const struct clk_div_table cpg_sd0h_div_table[] = { + { 0, 2 }, { 1, 3 }, { 2, 4 }, { 3, 6 }, + { 4, 8 }, { 5, 12 }, { 6, 16 }, { 7, 18 }, + { 8, 24 }, { 10, 36 }, { 11, 48 }, { 0, 0 }, +}; + +static const struct clk_div_table cpg_sd0_div_table[] = { + { 4, 8 }, { 5, 12 }, { 6, 16 }, { 7, 18 }, + { 8, 24 }, { 10, 36 }, { 11, 48 }, { 12, 10 }, + { 0, 0 }, +}; + static const struct cpg_core_clk r8a77970_core_clks[] __initconst = { /* External Clock Inputs */ DEF_INPUT("extal", CLK_EXTAL), @@ -68,6 +87,10 @@ static const struct cpg_core_clk r8a77970_core_clks[] __initconst = { DEF_FIXED("s2d2", R8A77970_CLK_S2D2, CLK_PLL1_DIV2, 12, 1), DEF_FIXED("s2d4", R8A77970_CLK_S2D4, CLK_PLL1_DIV2, 24, 1), + DEF_BASE("sd0h", R8A77970_CLK_SD0H, CLK_TYPE_R8A77970_SD0H, + CLK_PLL1_DIV2), + DEF_BASE("sd0", R8A77970_CLK_SD0, CLK_TYPE_R8A77970_SD0, CLK_PLL1_DIV2), + DEF_FIXED("cl", R8A77970_CLK_CL, CLK_PLL1_DIV2, 48, 1), DEF_FIXED("cp", R8A77970_CLK_CP, CLK_EXTAL, 2, 1), @@ -80,6 +103,11 @@ static const struct cpg_core_clk r8a77970_core_clks[] __initconst = { }; static const struct mssr_mod_clk r8a77970_mod_clks[] __initconst = { + DEF_MOD("tmu4", 121, R8A77970_CLK_S2D2), + DEF_MOD("tmu3", 122, R8A77970_CLK_S2D2), + DEF_MOD("tmu2", 123, R8A77970_CLK_S2D2), + DEF_MOD("tmu1", 124, R8A77970_CLK_S2D2), + DEF_MOD("tmu0", 125, R8A77970_CLK_CP), DEF_MOD("ivcp1e", 127, R8A77970_CLK_S2D1), DEF_MOD("scif4", 203, R8A77970_CLK_S2D4), DEF_MOD("scif3", 204, R8A77970_CLK_S2D4), @@ -92,6 +120,12 @@ static const struct mssr_mod_clk r8a77970_mod_clks[] __initconst = { DEF_MOD("mfis", 213, R8A77970_CLK_S2D2), DEF_MOD("sys-dmac2", 217, R8A77970_CLK_S2D1), DEF_MOD("sys-dmac1", 218, R8A77970_CLK_S2D1), + DEF_MOD("cmt3", 300, R8A77970_CLK_R), + DEF_MOD("cmt2", 301, R8A77970_CLK_R), + DEF_MOD("cmt1", 302, R8A77970_CLK_R), + DEF_MOD("cmt0", 303, R8A77970_CLK_R), + DEF_MOD("tpu0", 304, R8A77970_CLK_S2D4), + DEF_MOD("sd-if", 314, R8A77970_CLK_SD0), DEF_MOD("rwdt", 402, R8A77970_CLK_R), DEF_MOD("intc-ex", 407, R8A77970_CLK_CP), DEF_MOD("intc-ap", 408, R8A77970_CLK_S2D1), @@ -173,11 +207,46 @@ static int __init r8a77970_cpg_mssr_init(struct device *dev) if (error) return error; + spin_lock_init(&cpg_lock); + cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode); } +static struct clk * __init r8a77970_cpg_clk_register(struct device *dev, + const struct cpg_core_clk *core, const struct cpg_mssr_info *info, + struct clk **clks, void __iomem *base, + struct raw_notifier_head *notifiers) +{ + const struct clk_div_table *table; + const struct clk *parent; + unsigned int shift; + + switch (core->type) { + case CLK_TYPE_R8A77970_SD0H: + table = cpg_sd0h_div_table; + shift = 8; + break; + case CLK_TYPE_R8A77970_SD0: + table = cpg_sd0_div_table; + shift = 4; + break; + default: + return rcar_gen3_cpg_clk_register(dev, core, info, clks, base, + notifiers); + } + + parent = clks[core->parent]; + if (IS_ERR(parent)) + return ERR_CAST(parent); + + return clk_register_divider_table(NULL, core->name, + __clk_get_name(parent), 0, + base + CPG_SD0CKCR, + shift, 4, 0, table, &cpg_lock); +} + const struct cpg_mssr_info r8a77970_cpg_mssr_info __initconst = { /* Core Clocks */ .core_clks = r8a77970_core_clks, @@ -196,5 +265,5 @@ const struct cpg_mssr_info r8a77970_cpg_mssr_info __initconst = { /* Callbacks */ .init = r8a77970_cpg_mssr_init, - .cpg_clk_register = rcar_gen3_cpg_clk_register, + .cpg_clk_register = r8a77970_cpg_clk_register, }; |