Introduce a common function which super clock initialization for Tegra114 and beyond.
Signed-off-by: Peter De Schrijver <pdeschrij...@nvidia.com> --- drivers/clk/tegra/Makefile | 1 + drivers/clk/tegra/clk-tegra-super-gen4.c | 220 ++++++++++++++++++++++++++++++ drivers/clk/tegra/clk-tegra114.c | 126 +----------------- drivers/clk/tegra/clk.h | 2 + 4 files changed, 226 insertions(+), 123 deletions(-) create mode 100644 drivers/clk/tegra/clk-tegra-super-gen4.c diff --git a/drivers/clk/tegra/Makefile b/drivers/clk/tegra/Makefile index 5b78841..a4e5b5a 100644 --- a/drivers/clk/tegra/Makefile +++ b/drivers/clk/tegra/Makefile @@ -11,6 +11,7 @@ obj-y += clk-tegra-periph.o obj-y += clk-tegra-pmc.o obj-y += clk-tegra-fixed.o obj-y += clk-tegra-osc.o +obj-y += clk-tegra-super-gen4.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += clk-tegra20.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += clk-tegra30.o obj-$(CONFIG_ARCH_TEGRA_114_SOC) += clk-tegra114.o 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 0000000..9130025 --- /dev/null +++ b/drivers/clk/tegra/clk-tegra-super-gen4.c @@ -0,0 +1,220 @@ +/* + * Copyright (c) 2012, 2013, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/delay.h> +#include <linux/export.h> +#include <linux/clk/tegra.h> + +#include "clk.h" +#include "clk-id.h" + +#define PLLX_BASE 0xe0 +#define PLLX_MISC 0xe4 +#define PLLX_MISC2 0x514 +#define PLLX_MISC3 0x518 + +#define PLL_BASE_LOCK BIT(27) +#define PLL_MISC_LOCK_ENABLE 18 + +#define CCLKG_BURST_POLICY 0x368 +#define CCLKLP_BURST_POLICY 0x370 +#define SCLK_BURST_POLICY 0x028 +#define SYSTEM_CLK_RATE 0x030 + +static DEFINE_SPINLOCK(sysrate_lock); + +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" }; + +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 struct tegra_clk_pll_freq_table pll_x_freq_table[] = { + /* 1 GHz */ + {12000000, 1000000000, 83, 0, 1}, /* actual: 996.0 MHz */ + {13000000, 1000000000, 76, 0, 1}, /* actual: 988.0 MHz */ + {16800000, 1000000000, 59, 0, 1}, /* actual: 991.2 MHz */ + {19200000, 1000000000, 52, 0, 1}, /* actual: 998.4 MHz */ + {26000000, 1000000000, 76, 1, 1}, /* actual: 988.0 MHz */ + {0, 0, 0, 0, 0, 0}, +}; + +static struct div_nmp pllxc_nmp = { + .divm_shift = 0, + .divm_width = 8, + .divn_shift = 8, + .divn_width = 8, + .divp_shift = 20, + .divp_width = 4, +}; + +static struct pdiv_map pllxc_p[] = { + { .pdiv = 1, .hw_val = 0 }, + { .pdiv = 2, .hw_val = 1 }, + { .pdiv = 3, .hw_val = 2 }, + { .pdiv = 4, .hw_val = 3 }, + { .pdiv = 5, .hw_val = 4 }, + { .pdiv = 6, .hw_val = 5 }, + { .pdiv = 8, .hw_val = 6 }, + { .pdiv = 10, .hw_val = 7 }, + { .pdiv = 12, .hw_val = 8 }, + { .pdiv = 16, .hw_val = 9 }, + { .pdiv = 12, .hw_val = 10 }, + { .pdiv = 16, .hw_val = 11 }, + { .pdiv = 20, .hw_val = 12 }, + { .pdiv = 24, .hw_val = 13 }, + { .pdiv = 32, .hw_val = 14 }, + { .pdiv = 0, .hw_val = 0 }, +}; + +static struct tegra_clk_pll_params pll_x_params = { + .input_min = 12000000, + .input_max = 800000000, + .cf_min = 12000000, + .cf_max = 19200000, /* s/w policy, h/w capability 50 MHz */ + .vco_min = 700000000, + .vco_max = 2400000000U, + .base_reg = PLLX_BASE, + .misc_reg = PLLX_MISC, + .lock_mask = PLL_BASE_LOCK, + .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, + .lock_delay = 300, + .iddq_reg = PLLX_MISC3, + .iddq_bit_idx = 3, + .max_p = 6, + .dyn_ramp_reg = PLLX_MISC2, + .stepa_shift = 16, + .stepb_shift = 24, + .pdiv_tohw = pllxc_p, + .div_nmp = &pllxc_nmp, +}; + +static void __init tegra_sclk_init(void __iomem *clk_base, + struct tegra_clk *tegra_clks) +{ + struct clk *clk; + struct clk **dt_clk; + + /* SCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_sclk, tegra_clks); + if (!dt_clk) + return; + + clk = tegra_clk_register_super_mux("sclk", sclk_parents, + ARRAY_SIZE(sclk_parents), + CLK_SET_RATE_PARENT, + clk_base + SCLK_BURST_POLICY, + 0, 4, 0, 0, NULL); + clk_register_clkdev(clk, "sclk", NULL); + *dt_clk = clk; + + /* HCLK */ + dt_clk = tegra_lookup_dt_id(tegra_clk_hclk, tegra_clks); + if (!dt_clk) + return; + + 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_IGNORE_UNUSED, clk_base + SYSTEM_CLK_RATE, + 7, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); + clk_register_clkdev(clk, "hclk", NULL); + *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_IGNORE_UNUSED, clk_base + SYSTEM_CLK_RATE, + 3, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); + clk_register_clkdev(clk, "pclk", NULL); + *dt_clk = clk; +} + +void __init tegra_super_clk_gen4_init(void __iomem *clk_base, + void __iomem *pmc_base, + struct tegra_clk *tegra_clks) +{ + struct clk *clk; + struct clk **dt_clk; + + /* CCLKG */ + dt_clk = tegra_lookup_dt_id(tegra_clk_cclk_g, tegra_clks); + if (dt_clk) { + clk = tegra_clk_register_super_mux("cclk_g", cclk_g_parents, + ARRAY_SIZE(cclk_g_parents), + CLK_SET_RATE_PARENT, + clk_base + CCLKG_BURST_POLICY, + 0, 4, 0, 0, NULL); + clk_register_clkdev(clk, "cclk_g", NULL); + *dt_clk = clk; + } + + /* CCLKLP */ + dt_clk = tegra_lookup_dt_id(tegra_clk_cclk_lp, tegra_clks); + if (dt_clk) { + clk = tegra_clk_register_super_mux("cclk_lp", cclk_lp_parents, + ARRAY_SIZE(cclk_lp_parents), + CLK_SET_RATE_PARENT, + clk_base + CCLKLP_BURST_POLICY, + 0, 4, 8, 9, NULL); + clk_register_clkdev(clk, "cclk_lp", NULL); + *dt_clk = clk; + } + + tegra_sclk_init(clk_base, tegra_clks); + + /* PLLX */ + dt_clk = tegra_lookup_dt_id(tegra_clk_pll_x, tegra_clks); + if (!dt_clk) + return; + + clk = tegra_clk_register_pllxc("pll_x", "pll_ref", clk_base, + pmc_base, CLK_IGNORE_UNUSED, 0, &pll_x_params, + TEGRA_PLL_USE_LOCK, pll_x_freq_table, NULL); + clk_register_clkdev(clk, "pll_x", 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); + clk_register_clkdev(clk, "pll_x_out0", NULL); + *dt_clk = clk; + +} + diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c index b2ddfbf..ab11d00 100644 --- a/drivers/clk/tegra/clk-tegra114.c +++ b/drivers/clk/tegra/clk-tegra114.c @@ -69,10 +69,6 @@ #define PLLM_MISC 0x9c #define PLLP_BASE 0xa0 #define PLLP_MISC 0xac -#define PLLX_BASE 0xe0 -#define PLLX_MISC 0xe4 -#define PLLX_MISC2 0x514 -#define PLLX_MISC3 0x518 #define PLLD_BASE 0xd0 #define PLLD_MISC 0xdc #define PLLD2_BASE 0x4b8 @@ -91,7 +87,6 @@ #define PLLRE_MISC_LOCK_ENABLE 30 #define PLLC_IDDQ_BIT 26 -#define PLLX_IDDQ_BIT 3 #define PLLRE_IDDQ_BIT 16 #define PLL_BASE_LOCK BIT(27) @@ -110,12 +105,9 @@ #define PMC_CTRL_BLINK_ENB 7 #define PMC_BLINK_TIMER 0x40 -#define PLLXC_SW_MAX_P 6 - #define CCLKG_BURST_POLICY 0x368 -#define CCLKLP_BURST_POLICY 0x370 -#define SCLK_BURST_POLICY 0x028 -#define SYSTEM_CLK_RATE 0x030 + +#define PLLXC_SW_MAX_P 6 #define UTMIP_PLL_CFG2 0x488 #define UTMIP_PLL_CFG2_STABLE_COUNT(x) (((x) & 0xffff) << 6) @@ -169,7 +161,6 @@ static DEFINE_SPINLOCK(pll_d_lock); static DEFINE_SPINLOCK(pll_d2_lock); static DEFINE_SPINLOCK(pll_u_lock); static DEFINE_SPINLOCK(pll_re_lock); -static DEFINE_SPINLOCK(sysrate_lock); static struct div_nmp pllxc_nmp = { .divm_shift = 0, @@ -444,39 +435,6 @@ static struct tegra_clk_pll_params pll_u_params = { .div_nmp = &pllu_nmp, }; -static struct tegra_clk_pll_freq_table pll_x_freq_table[] = { - /* 1 GHz */ - {12000000, 1000000000, 83, 0, 1}, /* actual: 996.0 MHz */ - {13000000, 1000000000, 76, 0, 1}, /* actual: 988.0 MHz */ - {16800000, 1000000000, 59, 0, 1}, /* actual: 991.2 MHz */ - {19200000, 1000000000, 52, 0, 1}, /* actual: 998.4 MHz */ - {26000000, 1000000000, 76, 1, 1}, /* actual: 988.0 MHz */ - - {0, 0, 0, 0, 0, 0}, -}; - -static struct tegra_clk_pll_params pll_x_params = { - .input_min = 12000000, - .input_max = 800000000, - .cf_min = 12000000, - .cf_max = 19200000, /* s/w policy, h/w capability 50 MHz */ - .vco_min = 700000000, - .vco_max = 2400000000U, - .base_reg = PLLX_BASE, - .misc_reg = PLLX_MISC, - .lock_mask = PLL_BASE_LOCK, - .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, - .lock_delay = 300, - .iddq_reg = PLLX_MISC3, - .iddq_bit_idx = PLLX_IDDQ_BIT, - .max_p = PLLXC_SW_MAX_P, - .dyn_ramp_reg = PLLX_MISC2, - .stepa_shift = 16, - .stepb_shift = 24, - .pdiv_tohw = pllxc_p, - .div_nmp = &pllxc_nmp, -}; - static struct tegra_clk_pll_freq_table pll_e_freq_table[] = { /* PLLE special case: use cpcon field to store cml divider value */ {336000000, 100000000, 100, 21, 16, 11}, @@ -932,19 +890,6 @@ static void __init tegra114_pll_init(void __iomem *clk_base, clk = clk_register_fixed_factor(NULL, "pll_m_ud", "pll_m", CLK_SET_RATE_PARENT, 1, 1); - /* PLLX */ - clk = tegra_clk_register_pllxc("pll_x", "pll_ref", clk_base, - pmc, CLK_IGNORE_UNUSED, 0, &pll_x_params, - TEGRA_PLL_USE_LOCK, pll_x_freq_table, NULL); - clk_register_clkdev(clk, "pll_x", NULL); - clks[TEGRA114_CLK_PLL_X] = clk; - - /* PLLX_OUT0 */ - clk = clk_register_fixed_factor(NULL, "pll_x_out0", "pll_x", - CLK_SET_RATE_PARENT, 1, 2); - clk_register_clkdev(clk, "pll_x_out0", NULL); - clks[TEGRA114_CLK_PLL_X_OUT0] = clk; - /* PLLU */ val = readl(clk_base + pll_u_params.base_reg); val &= ~BIT(24); /* disable PLLU_OVERRIDE */ @@ -1033,70 +978,6 @@ static void __init tegra114_pll_init(void __iomem *clk_base, clks[TEGRA114_CLK_PLL_E_OUT0] = clk; } -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" }; - -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 void __init tegra114_super_clk_init(void __iomem *clk_base) -{ - struct clk *clk; - - /* CCLKG */ - clk = tegra_clk_register_super_mux("cclk_g", cclk_g_parents, - ARRAY_SIZE(cclk_g_parents), - CLK_SET_RATE_PARENT, - clk_base + CCLKG_BURST_POLICY, - 0, 4, 0, 0, NULL); - clk_register_clkdev(clk, "cclk_g", NULL); - clks[TEGRA114_CLK_CCLK_G] = clk; - - /* CCLKLP */ - clk = tegra_clk_register_super_mux("cclk_lp", cclk_lp_parents, - ARRAY_SIZE(cclk_lp_parents), - CLK_SET_RATE_PARENT, - clk_base + CCLKLP_BURST_POLICY, - 0, 4, 8, 9, NULL); - clk_register_clkdev(clk, "cclk_lp", NULL); - clks[TEGRA114_CLK_CCLK_LP] = clk; - - /* SCLK */ - clk = tegra_clk_register_super_mux("sclk", sclk_parents, - ARRAY_SIZE(sclk_parents), - CLK_SET_RATE_PARENT, - clk_base + SCLK_BURST_POLICY, - 0, 4, 0, 0, NULL); - clk_register_clkdev(clk, "sclk", NULL); - clks[TEGRA114_CLK_SCLK] = clk; - - /* HCLK */ - 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_IGNORE_UNUSED, clk_base + SYSTEM_CLK_RATE, - 7, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); - clk_register_clkdev(clk, "hclk", NULL); - clks[TEGRA114_CLK_HCLK] = clk; - - /* PCLK */ - 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_IGNORE_UNUSED, clk_base + SYSTEM_CLK_RATE, - 3, CLK_GATE_SET_TO_DISABLE, &sysrate_lock); - clk_register_clkdev(clk, "pclk", NULL); - clks[TEGRA114_CLK_PCLK] = clk; -} - static __init void tegra114_periph_clk_init(void __iomem *clk_base, void __iomem *pmc_base) { @@ -1381,8 +1262,7 @@ static void __init tegra114_clock_init(struct device_node *np) tegra_audio_clk_init(clk_base, pmc_base, tegra114_clks, NULL); tegra_pmc_clk_init(pmc_base, tegra114_clks); - tegra114_super_clk_init(clk_base); - + tegra_super_clk_gen4_init(clk_base, pmc_base, tegra114_clks); tegra_add_of_provider(np); tegra_clk_apply_init_table = tegra114_clock_apply_init_table; diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h index 3b28178..153d857 100644 --- a/drivers/clk/tegra/clk.h +++ b/drivers/clk/tegra/clk.h @@ -614,6 +614,8 @@ int tegra_osc_clk_init(void __iomem *clk_base, struct tegra_clk *tegra_clks, unsigned long *input_freqs, int num, unsigned long *osc_freq, unsigned long *pll_ref_freq); +void tegra_super_clk_gen4_init(void __iomem *clk_base, + void __iomem *pmc_base, struct tegra_clk *tegra_clks); void tegra114_clock_tune_cpu_trimmers_high(void); void tegra114_clock_tune_cpu_trimmers_low(void); -- 1.7.7.rc0.72.g4b5ea.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
