From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- drivers/clk/tegra/clk-tegra-super-gen4.c | 269 +++++++++++++++++++++++++++++++ 1 file changed, 269 insertions(+) create mode 100644 drivers/clk/tegra/clk-tegra-super-gen4.c (limited to 'drivers/clk/tegra/clk-tegra-super-gen4.c') diff --git a/drivers/clk/tegra/clk-tegra-super-gen4.c b/drivers/clk/tegra/clk-tegra-super-gen4.c new file mode 100644 index 000000000..5760c978b --- /dev/null +++ b/drivers/clk/tegra/clk-tegra-super-gen4.c @@ -0,0 +1,269 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2012, 2013, NVIDIA CORPORATION. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "clk.h" +#include "clk-id.h" + +#define PLLX_BASE 0xe0 +#define PLLX_MISC 0xe4 +#define PLLX_MISC2 0x514 +#define PLLX_MISC3 0x518 + +#define CCLKG_BURST_POLICY 0x368 +#define CCLKLP_BURST_POLICY 0x370 +#define SCLK_BURST_POLICY 0x028 +#define SYSTEM_CLK_RATE 0x030 +#define SCLK_DIVIDER 0x2c + +static DEFINE_SPINLOCK(sysrate_lock); + +enum tegra_super_gen { + gen4 = 4, + gen5, +}; + +struct tegra_super_gen_info { + enum tegra_super_gen gen; + const char **sclk_parents; + const char **cclk_g_parents; + const char **cclk_lp_parents; + int num_sclk_parents; + int num_cclk_g_parents; + int num_cclk_lp_parents; +}; + +static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4", + "pll_p", "pll_p_out2", "unused", + "clk_32k", "pll_m_out1" }; + +static const char *cclk_g_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", + "pll_p", "pll_p_out4", "unused", + "unused", "pll_x", "unused", "unused", + "unused", "unused", "unused", "unused", + "dfllCPU_out" }; + +static const char *cclk_lp_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", + "pll_p", "pll_p_out4", "unused", + "unused", "pll_x", "pll_x_out0" }; + +static const struct tegra_super_gen_info tegra_super_gen_info_gen4 = { + .gen = gen4, + .sclk_parents = sclk_parents, + .cclk_g_parents = cclk_g_parents, + .cclk_lp_parents = cclk_lp_parents, + .num_sclk_parents = ARRAY_SIZE(sclk_parents), + .num_cclk_g_parents = ARRAY_SIZE(cclk_g_parents), + .num_cclk_lp_parents = ARRAY_SIZE(cclk_lp_parents), +}; + +static const char *sclk_parents_gen5[] = { "clk_m", "pll_c_out1", "pll_c4_out3", + "pll_p", "pll_p_out2", "pll_c4_out1", + "clk_32k", "pll_c4_out2" }; + +static const char *cclk_g_parents_gen5[] = { "clk_m", "unused", "clk_32k", "unused", + "pll_p", "pll_p_out4", "unused", + "unused", "pll_x", "unused", "unused", + "unused", "unused", "unused", "unused", + "dfllCPU_out" }; + +static const char *cclk_lp_parents_gen5[] = { "clk_m", "unused", "clk_32k", "unused", + "pll_p", "pll_p_out4", "unused", + "unused", "pll_x", "unused", "unused", + "unused", "unused", "unused", "unused", + "dfllCPU_out" }; + +static const struct tegra_super_gen_info tegra_super_gen_info_gen5 = { + .gen = gen5, + .sclk_parents = sclk_parents_gen5, + .cclk_g_parents = cclk_g_parents_gen5, + .cclk_lp_parents = cclk_lp_parents_gen5, + .num_sclk_parents = ARRAY_SIZE(sclk_parents_gen5), + .num_cclk_g_parents = ARRAY_SIZE(cclk_g_parents_gen5), + .num_cclk_lp_parents = ARRAY_SIZE(cclk_lp_parents_gen5), +}; + +static void __init tegra_sclk_init(void __iomem *clk_base, + struct tegra_clk *tegra_clks, + const struct tegra_super_gen_info *gen_info) +{ + struct clk *clk; + struct clk **dt_clk; + + /* SCLK_MUX */ + dt_clk = tegra_lookup_dt_id(tegra_clk_sclk_mux, tegra_clks); + if (dt_clk) { + clk = tegra_clk_register_super_mux("sclk_mux", + gen_info->sclk_parents, + gen_info->num_sclk_parents, + CLK_SET_RATE_PARENT, + clk_base + SCLK_BURST_POLICY, + 0, 4, 0, 0, NULL); + *dt_clk = clk; + + + /* SCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_sclk, tegra_clks); + if (dt_clk) { + clk = clk_register_divider(NULL, "sclk", "sclk_mux", + CLK_IS_CRITICAL, + clk_base + SCLK_DIVIDER, 0, 8, + 0, &sysrate_lock); + *dt_clk = clk; + } + } else { + /* SCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_sclk, tegra_clks); + if (dt_clk) { + clk = tegra_clk_register_super_mux("sclk", + gen_info->sclk_parents, + gen_info->num_sclk_parents, + CLK_SET_RATE_PARENT | + CLK_IS_CRITICAL, + clk_base + SCLK_BURST_POLICY, + 0, 4, 0, 0, NULL); + *dt_clk = clk; + } + } + + /* HCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_hclk, tegra_clks); + if (dt_clk) { + clk = clk_register_divider(NULL, "hclk_div", "sclk", 0, + clk_base + SYSTEM_CLK_RATE, 4, 2, 0, + &sysrate_lock); + clk = clk_register_gate(NULL, "hclk", "hclk_div", + CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, + clk_base + SYSTEM_CLK_RATE, + 7, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); + *dt_clk = clk; + } + + /* PCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_pclk, tegra_clks); + if (!dt_clk) + return; + + clk = clk_register_divider(NULL, "pclk_div", "hclk", 0, + clk_base + SYSTEM_CLK_RATE, 0, 2, 0, + &sysrate_lock); + clk = clk_register_gate(NULL, "pclk", "pclk_div", CLK_SET_RATE_PARENT | + CLK_IS_CRITICAL, clk_base + SYSTEM_CLK_RATE, + 3, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); + *dt_clk = clk; +} + +static void __init tegra_super_clk_init(void __iomem *clk_base, + void __iomem *pmc_base, + struct tegra_clk *tegra_clks, + struct tegra_clk_pll_params *params, + const struct tegra_super_gen_info *gen_info) +{ + struct clk *clk; + struct clk **dt_clk; + + /* CCLKG */ + dt_clk = tegra_lookup_dt_id(tegra_clk_cclk_g, tegra_clks); + if (dt_clk) { + if (gen_info->gen == gen5) { + clk = tegra_clk_register_super_mux("cclk_g", + gen_info->cclk_g_parents, + gen_info->num_cclk_g_parents, + CLK_SET_RATE_PARENT, + clk_base + CCLKG_BURST_POLICY, + TEGRA210_CPU_CLK, 4, 8, 0, NULL); + } else { + clk = tegra_clk_register_super_mux("cclk_g", + gen_info->cclk_g_parents, + gen_info->num_cclk_g_parents, + CLK_SET_RATE_PARENT, + clk_base + CCLKG_BURST_POLICY, + 0, 4, 0, 0, NULL); + } + *dt_clk = clk; + } + + /* CCLKLP */ + dt_clk = tegra_lookup_dt_id(tegra_clk_cclk_lp, tegra_clks); + if (dt_clk) { + if (gen_info->gen == gen5) { + /* + * TEGRA210_CPU_CLK flag is not needed for cclk_lp as + * cluster switching is not currently supported on + * Tegra210 and also cpu_lp is not used. + */ + clk = tegra_clk_register_super_mux("cclk_lp", + gen_info->cclk_lp_parents, + gen_info->num_cclk_lp_parents, + CLK_SET_RATE_PARENT, + clk_base + CCLKLP_BURST_POLICY, + 0, 4, 8, 0, NULL); + } else { + clk = tegra_clk_register_super_mux("cclk_lp", + gen_info->cclk_lp_parents, + gen_info->num_cclk_lp_parents, + CLK_SET_RATE_PARENT, + clk_base + CCLKLP_BURST_POLICY, + TEGRA_DIVIDER_2, 4, 8, 9, NULL); + } + *dt_clk = clk; + } + + tegra_sclk_init(clk_base, tegra_clks, gen_info); + +#if defined(CONFIG_ARCH_TEGRA_114_SOC) || \ + defined(CONFIG_ARCH_TEGRA_124_SOC) || \ + defined(CONFIG_ARCH_TEGRA_210_SOC) + /* PLLX */ + dt_clk = tegra_lookup_dt_id(tegra_clk_pll_x, tegra_clks); + if (!dt_clk) + return; + +#if defined(CONFIG_ARCH_TEGRA_210_SOC) + if (gen_info->gen == gen5) + clk = tegra_clk_register_pllc_tegra210("pll_x", "pll_ref", + clk_base, pmc_base, CLK_IGNORE_UNUSED, params, NULL); + else +#endif + clk = tegra_clk_register_pllxc("pll_x", "pll_ref", clk_base, + pmc_base, CLK_IGNORE_UNUSED, params, NULL); + + *dt_clk = clk; + + /* PLLX_OUT0 */ + + dt_clk = tegra_lookup_dt_id(tegra_clk_pll_x_out0, tegra_clks); + if (!dt_clk) + return; + clk = clk_register_fixed_factor(NULL, "pll_x_out0", "pll_x", + CLK_SET_RATE_PARENT, 1, 2); + *dt_clk = clk; +#endif +} + +void __init tegra_super_clk_gen4_init(void __iomem *clk_base, + void __iomem *pmc_base, + struct tegra_clk *tegra_clks, + struct tegra_clk_pll_params *params) +{ + tegra_super_clk_init(clk_base, pmc_base, tegra_clks, params, + &tegra_super_gen_info_gen4); +} + +void __init tegra_super_clk_gen5_init(void __iomem *clk_base, + void __iomem *pmc_base, + struct tegra_clk *tegra_clks, + struct tegra_clk_pll_params *params) +{ + tegra_super_clk_init(clk_base, pmc_base, tegra_clks, params, + &tegra_super_gen_info_gen5); +} -- cgit v1.2.3