// SPDX-License-Identifier: GPL-2.0-only /* * Amlogic C3 PLL Controller Driver * * Copyright (c) 2023 Amlogic, inc. * Author: Chuan Liu */ #include #include #include "clk-regmap.h" #include "clk-pll.h" #include "meson-clkc-utils.h" #include #define ANACTRL_FIXPLL_CTRL4 0x50 #define ANACTRL_GP0PLL_CTRL0 0x80 #define ANACTRL_GP0PLL_CTRL1 0x84 #define ANACTRL_GP0PLL_CTRL2 0x88 #define ANACTRL_GP0PLL_CTRL3 0x8c #define ANACTRL_GP0PLL_CTRL4 0x90 #define ANACTRL_GP0PLL_CTRL5 0x94 #define ANACTRL_GP0PLL_CTRL6 0x98 #define ANACTRL_HIFIPLL_CTRL0 0x100 #define ANACTRL_HIFIPLL_CTRL1 0x104 #define ANACTRL_HIFIPLL_CTRL2 0x108 #define ANACTRL_HIFIPLL_CTRL3 0x10c #define ANACTRL_HIFIPLL_CTRL4 0x110 #define ANACTRL_HIFIPLL_CTRL5 0x114 #define ANACTRL_HIFIPLL_CTRL6 0x118 #define ANACTRL_MPLL_CTRL0 0x180 #define ANACTRL_MPLL_CTRL1 0x184 #define ANACTRL_MPLL_CTRL2 0x188 #define ANACTRL_MPLL_CTRL3 0x18c #define ANACTRL_MPLL_CTRL4 0x190 static struct clk_regmap fclk_50m_en = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_FIXPLL_CTRL4, .bit_idx = 0, }, .hw.init = &(struct clk_init_data) { .name = "fclk_50m_en", .ops = &clk_regmap_gate_ro_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "fix" }, .num_parents = 1, }, }; static struct clk_fixed_factor fclk_50m = { .mult = 1, .div = 40, .hw.init = &(struct clk_init_data) { .name = "fclk_50m", .ops = &clk_fixed_factor_ops, .parent_hws = (const struct clk_hw *[]) { &fclk_50m_en.hw }, .num_parents = 1, }, }; static struct clk_fixed_factor fclk_div2_div = { .mult = 1, .div = 2, .hw.init = &(struct clk_init_data) { .name = "fclk_div2_div", .ops = &clk_fixed_factor_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "fix" }, .num_parents = 1, }, }; static struct clk_regmap fclk_div2 = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_FIXPLL_CTRL4, .bit_idx = 24, }, .hw.init = &(struct clk_init_data) { .name = "fclk_div2", .ops = &clk_regmap_gate_ro_ops, .parent_hws = (const struct clk_hw *[]) { &fclk_div2_div.hw }, .num_parents = 1, }, }; static struct clk_fixed_factor fclk_div2p5_div = { .mult = 2, .div = 5, .hw.init = &(struct clk_init_data) { .name = "fclk_div2p5_div", .ops = &clk_fixed_factor_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "fix" }, .num_parents = 1, }, }; static struct clk_regmap fclk_div2p5 = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_FIXPLL_CTRL4, .bit_idx = 4, }, .hw.init = &(struct clk_init_data) { .name = "fclk_div2p5", .ops = &clk_regmap_gate_ro_ops, .parent_hws = (const struct clk_hw *[]) { &fclk_div2p5_div.hw }, .num_parents = 1, }, }; static struct clk_fixed_factor fclk_div3_div = { .mult = 1, .div = 3, .hw.init = &(struct clk_init_data) { .name = "fclk_div3_div", .ops = &clk_fixed_factor_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "fix" }, .num_parents = 1, }, }; static struct clk_regmap fclk_div3 = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_FIXPLL_CTRL4, .bit_idx = 20, }, .hw.init = &(struct clk_init_data) { .name = "fclk_div3", .ops = &clk_regmap_gate_ro_ops, .parent_hws = (const struct clk_hw *[]) { &fclk_div3_div.hw }, .num_parents = 1, }, }; static struct clk_fixed_factor fclk_div4_div = { .mult = 1, .div = 4, .hw.init = &(struct clk_init_data) { .name = "fclk_div4_div", .ops = &clk_fixed_factor_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "fix" }, .num_parents = 1, }, }; static struct clk_regmap fclk_div4 = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_FIXPLL_CTRL4, .bit_idx = 21, }, .hw.init = &(struct clk_init_data) { .name = "fclk_div4", .ops = &clk_regmap_gate_ro_ops, .parent_hws = (const struct clk_hw *[]) { &fclk_div4_div.hw }, .num_parents = 1, }, }; static struct clk_fixed_factor fclk_div5_div = { .mult = 1, .div = 5, .hw.init = &(struct clk_init_data) { .name = "fclk_div5_div", .ops = &clk_fixed_factor_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "fix" }, .num_parents = 1, }, }; static struct clk_regmap fclk_div5 = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_FIXPLL_CTRL4, .bit_idx = 22, }, .hw.init = &(struct clk_init_data) { .name = "fclk_div5", .ops = &clk_regmap_gate_ro_ops, .parent_hws = (const struct clk_hw *[]) { &fclk_div5_div.hw }, .num_parents = 1, }, }; static struct clk_fixed_factor fclk_div7_div = { .mult = 1, .div = 7, .hw.init = &(struct clk_init_data) { .name = "fclk_div7_div", .ops = &clk_fixed_factor_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "fix" }, .num_parents = 1, }, }; static struct clk_regmap fclk_div7 = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_FIXPLL_CTRL4, .bit_idx = 23, }, .hw.init = &(struct clk_init_data) { .name = "fclk_div7", .ops = &clk_regmap_gate_ro_ops, .parent_hws = (const struct clk_hw *[]) { &fclk_div7_div.hw }, .num_parents = 1, }, }; static const struct reg_sequence c3_gp0_init_regs[] = { { .reg = ANACTRL_GP0PLL_CTRL2, .def = 0x0 }, { .reg = ANACTRL_GP0PLL_CTRL3, .def = 0x48681c00 }, { .reg = ANACTRL_GP0PLL_CTRL4, .def = 0x88770290 }, { .reg = ANACTRL_GP0PLL_CTRL5, .def = 0x3927200a }, { .reg = ANACTRL_GP0PLL_CTRL6, .def = 0x56540000 }, }; static const struct pll_mult_range c3_gp0_pll_mult_range = { .min = 125, .max = 250, }; static struct clk_regmap gp0_pll_dco = { .data = &(struct meson_clk_pll_data) { .en = { .reg_off = ANACTRL_GP0PLL_CTRL0, .shift = 28, .width = 1, }, .m = { .reg_off = ANACTRL_GP0PLL_CTRL0, .shift = 0, .width = 9, }, .frac = { .reg_off = ANACTRL_GP0PLL_CTRL1, .shift = 0, .width = 19, }, .n = { .reg_off = ANACTRL_GP0PLL_CTRL0, .shift = 10, .width = 5, }, .l = { .reg_off = ANACTRL_GP0PLL_CTRL0, .shift = 31, .width = 1, }, .rst = { .reg_off = ANACTRL_GP0PLL_CTRL0, .shift = 29, .width = 1, }, .range = &c3_gp0_pll_mult_range, .init_regs = c3_gp0_init_regs, .init_count = ARRAY_SIZE(c3_gp0_init_regs), }, .hw.init = &(struct clk_init_data) { .name = "gp0_pll_dco", .ops = &meson_clk_pll_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "top", }, .num_parents = 1, }, }; /* The maximum frequency divider supports is 32, not 128(2^7) */ static const struct clk_div_table c3_gp0_pll_od_table[] = { { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 }, { 4, 16 }, { 5, 32 }, { /* sentinel */ } }; static struct clk_regmap gp0_pll = { .data = &(struct clk_regmap_div_data) { .offset = ANACTRL_GP0PLL_CTRL0, .shift = 16, .width = 3, .table = c3_gp0_pll_od_table, }, .hw.init = &(struct clk_init_data) { .name = "gp0_pll", .ops = &clk_regmap_divider_ops, .parent_hws = (const struct clk_hw *[]) { &gp0_pll_dco.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static const struct reg_sequence c3_hifi_init_regs[] = { { .reg = ANACTRL_HIFIPLL_CTRL2, .def = 0x0 }, { .reg = ANACTRL_HIFIPLL_CTRL3, .def = 0x6a285c00 }, { .reg = ANACTRL_HIFIPLL_CTRL4, .def = 0x65771290 }, { .reg = ANACTRL_HIFIPLL_CTRL5, .def = 0x3927200a }, { .reg = ANACTRL_HIFIPLL_CTRL6, .def = 0x56540000 }, }; static struct clk_regmap hifi_pll_dco = { .data = &(struct meson_clk_pll_data) { .en = { .reg_off = ANACTRL_HIFIPLL_CTRL0, .shift = 28, .width = 1, }, .m = { .reg_off = ANACTRL_HIFIPLL_CTRL0, .shift = 0, .width = 8, }, .frac = { .reg_off = ANACTRL_HIFIPLL_CTRL1, .shift = 0, .width = 19, }, .n = { .reg_off = ANACTRL_HIFIPLL_CTRL0, .shift = 10, .width = 5, }, .l = { .reg_off = ANACTRL_HIFIPLL_CTRL0, .shift = 31, .width = 1, }, .rst = { .reg_off = ANACTRL_HIFIPLL_CTRL0, .shift = 29, .width = 1, }, .range = &c3_gp0_pll_mult_range, .init_regs = c3_hifi_init_regs, .init_count = ARRAY_SIZE(c3_hifi_init_regs), }, .hw.init = &(struct clk_init_data) { .name = "hifi_pll_dco", .ops = &meson_clk_pll_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "top", }, .num_parents = 1, }, }; static struct clk_regmap hifi_pll = { .data = &(struct clk_regmap_div_data) { .offset = ANACTRL_HIFIPLL_CTRL0, .shift = 16, .width = 2, .flags = CLK_DIVIDER_POWER_OF_TWO, }, .hw.init = &(struct clk_init_data) { .name = "hifi_pll", .ops = &clk_regmap_divider_ops, .parent_hws = (const struct clk_hw *[]) { &hifi_pll_dco.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static const struct reg_sequence c3_mclk_init_regs[] = { { .reg = ANACTRL_MPLL_CTRL1, .def = 0x1420500f }, { .reg = ANACTRL_MPLL_CTRL2, .def = 0x00023041 }, { .reg = ANACTRL_MPLL_CTRL3, .def = 0x18180000 }, { .reg = ANACTRL_MPLL_CTRL2, .def = 0x00023001 } }; static const struct pll_mult_range c3_mclk_pll_mult_range = { .min = 67, .max = 133, }; static struct clk_regmap mclk_pll_dco = { .data = &(struct meson_clk_pll_data) { .en = { .reg_off = ANACTRL_MPLL_CTRL0, .shift = 28, .width = 1, }, .m = { .reg_off = ANACTRL_MPLL_CTRL0, .shift = 0, .width = 8, }, .n = { .reg_off = ANACTRL_MPLL_CTRL0, .shift = 16, .width = 5, }, .l = { .reg_off = ANACTRL_MPLL_CTRL0, .shift = 31, .width = 1, }, .rst = { .reg_off = ANACTRL_MPLL_CTRL0, .shift = 29, .width = 1, }, .range = &c3_mclk_pll_mult_range, .init_regs = c3_mclk_init_regs, .init_count = ARRAY_SIZE(c3_mclk_init_regs), }, .hw.init = &(struct clk_init_data) { .name = "mclk_pll_dco", .ops = &meson_clk_pll_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "mclk", }, .num_parents = 1, }, }; static const struct clk_div_table c3_mpll_od_table[] = { { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 }, { 4, 16 }, { /* sentinel */ } }; static struct clk_regmap mclk_pll_od = { .data = &(struct clk_regmap_div_data) { .offset = ANACTRL_MPLL_CTRL0, .shift = 12, .width = 3, .table = c3_mpll_od_table, }, .hw.init = &(struct clk_init_data) { .name = "mclk_pll_od", .ops = &clk_regmap_divider_ops, .parent_hws = (const struct clk_hw *[]) { &mclk_pll_dco.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; /* both value 0 and 1 gives divide the input rate by one */ static struct clk_regmap mclk_pll = { .data = &(struct clk_regmap_div_data) { .offset = ANACTRL_MPLL_CTRL4, .shift = 16, .width = 5, .flags = CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, }, .hw.init = &(struct clk_init_data) { .name = "mclk_pll", .ops = &clk_regmap_divider_ops, .parent_hws = (const struct clk_hw *[]) { &mclk_pll_od.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static const struct clk_parent_data mclk_parent[] = { { .hw = &mclk_pll.hw }, { .fw_name = "mclk" }, { .hw = &fclk_50m.hw } }; static struct clk_regmap mclk0_sel = { .data = &(struct clk_regmap_mux_data) { .offset = ANACTRL_MPLL_CTRL4, .mask = 0x3, .shift = 4, }, .hw.init = &(struct clk_init_data) { .name = "mclk0_sel", .ops = &clk_regmap_mux_ops, .parent_data = mclk_parent, .num_parents = ARRAY_SIZE(mclk_parent), }, }; static struct clk_regmap mclk0_div_en = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_MPLL_CTRL4, .bit_idx = 1, }, .hw.init = &(struct clk_init_data) { .name = "mclk0_div_en", .ops = &clk_regmap_gate_ops, .parent_hws = (const struct clk_hw *[]) { &mclk0_sel.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static struct clk_regmap mclk0_div = { .data = &(struct clk_regmap_div_data) { .offset = ANACTRL_MPLL_CTRL4, .shift = 2, .width = 1, }, .hw.init = &(struct clk_init_data) { .name = "mclk0_div", .ops = &clk_regmap_divider_ops, .parent_hws = (const struct clk_hw *[]) { &mclk0_div_en.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static struct clk_regmap mclk0 = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_MPLL_CTRL4, .bit_idx = 0, }, .hw.init = &(struct clk_init_data) { .name = "mclk0", .ops = &clk_regmap_gate_ops, .parent_hws = (const struct clk_hw *[]) { &mclk0_div.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static struct clk_regmap mclk1_sel = { .data = &(struct clk_regmap_mux_data) { .offset = ANACTRL_MPLL_CTRL4, .mask = 0x3, .shift = 12, }, .hw.init = &(struct clk_init_data) { .name = "mclk1_sel", .ops = &clk_regmap_mux_ops, .parent_data = mclk_parent, .num_parents = ARRAY_SIZE(mclk_parent), }, }; static struct clk_regmap mclk1_div_en = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_MPLL_CTRL4, .bit_idx = 9, }, .hw.init = &(struct clk_init_data) { .name = "mclk1_div_en", .ops = &clk_regmap_gate_ops, .parent_hws = (const struct clk_hw *[]) { &mclk1_sel.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static struct clk_regmap mclk1_div = { .data = &(struct clk_regmap_div_data) { .offset = ANACTRL_MPLL_CTRL4, .shift = 10, .width = 1, }, .hw.init = &(struct clk_init_data) { .name = "mclk1_div", .ops = &clk_regmap_divider_ops, .parent_hws = (const struct clk_hw *[]) { &mclk1_div_en.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static struct clk_regmap mclk1 = { .data = &(struct clk_regmap_gate_data) { .offset = ANACTRL_MPLL_CTRL4, .bit_idx = 8, }, .hw.init = &(struct clk_init_data) { .name = "mclk1", .ops = &clk_regmap_gate_ops, .parent_hws = (const struct clk_hw *[]) { &mclk1_div.hw }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, }, }; static struct clk_hw *c3_pll_hw_clks[] = { [CLKID_FCLK_50M_EN] = &fclk_50m_en.hw, [CLKID_FCLK_50M] = &fclk_50m.hw, [CLKID_FCLK_DIV2_DIV] = &fclk_div2_div.hw, [CLKID_FCLK_DIV2] = &fclk_div2.hw, [CLKID_FCLK_DIV2P5_DIV] = &fclk_div2p5_div.hw, [CLKID_FCLK_DIV2P5] = &fclk_div2p5.hw, [CLKID_FCLK_DIV3_DIV] = &fclk_div3_div.hw, [CLKID_FCLK_DIV3] = &fclk_div3.hw, [CLKID_FCLK_DIV4_DIV] = &fclk_div4_div.hw, [CLKID_FCLK_DIV4] = &fclk_div4.hw, [CLKID_FCLK_DIV5_DIV] = &fclk_div5_div.hw, [CLKID_FCLK_DIV5] = &fclk_div5.hw, [CLKID_FCLK_DIV7_DIV] = &fclk_div7_div.hw, [CLKID_FCLK_DIV7] = &fclk_div7.hw, [CLKID_GP0_PLL_DCO] = &gp0_pll_dco.hw, [CLKID_GP0_PLL] = &gp0_pll.hw, [CLKID_HIFI_PLL_DCO] = &hifi_pll_dco.hw, [CLKID_HIFI_PLL] = &hifi_pll.hw, [CLKID_MCLK_PLL_DCO] = &mclk_pll_dco.hw, [CLKID_MCLK_PLL_OD] = &mclk_pll_od.hw, [CLKID_MCLK_PLL] = &mclk_pll.hw, [CLKID_MCLK0_SEL] = &mclk0_sel.hw, [CLKID_MCLK0_SEL_EN] = &mclk0_div_en.hw, [CLKID_MCLK0_DIV] = &mclk0_div.hw, [CLKID_MCLK0] = &mclk0.hw, [CLKID_MCLK1_SEL] = &mclk1_sel.hw, [CLKID_MCLK1_SEL_EN] = &mclk1_div_en.hw, [CLKID_MCLK1_DIV] = &mclk1_div.hw, [CLKID_MCLK1] = &mclk1.hw }; /* Convenience table to populate regmap in .probe */ static struct clk_regmap *const c3_pll_clk_regmaps[] = { &fclk_50m_en, &fclk_div2, &fclk_div2p5, &fclk_div3, &fclk_div4, &fclk_div5, &fclk_div7, &gp0_pll_dco, &gp0_pll, &hifi_pll_dco, &hifi_pll, &mclk_pll_dco, &mclk_pll_od, &mclk_pll, &mclk0_sel, &mclk0_div_en, &mclk0_div, &mclk0, &mclk1_sel, &mclk1_div_en, &mclk1_div, &mclk1, }; static struct regmap_config clkc_regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, .max_register = ANACTRL_MPLL_CTRL4, }; static struct meson_clk_hw_data c3_pll_clks = { .hws = c3_pll_hw_clks, .num = ARRAY_SIZE(c3_pll_hw_clks), }; static int c3_pll_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct regmap *regmap; void __iomem *base; int clkid, ret, i; base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); regmap = devm_regmap_init_mmio(dev, base, &clkc_regmap_config); if (IS_ERR(regmap)) return PTR_ERR(regmap); /* Populate regmap for the regmap backed clocks */ for (i = 0; i < ARRAY_SIZE(c3_pll_clk_regmaps); i++) c3_pll_clk_regmaps[i]->map = regmap; for (clkid = 0; clkid < c3_pll_clks.num; clkid++) { /* array might be sparse */ if (!c3_pll_clks.hws[clkid]) continue; ret = devm_clk_hw_register(dev, c3_pll_clks.hws[clkid]); if (ret) { dev_err(dev, "Clock registration failed\n"); return ret; } } return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get, &c3_pll_clks); } static const struct of_device_id c3_pll_clkc_match_table[] = { { .compatible = "amlogic,c3-pll-clkc", }, {} }; MODULE_DEVICE_TABLE(of, c3_pll_clkc_match_table); static struct platform_driver c3_pll_driver = { .probe = c3_pll_probe, .driver = { .name = "c3-pll-clkc", .of_match_table = c3_pll_clkc_match_table, }, }; module_platform_driver(c3_pll_driver); MODULE_DESCRIPTION("Amlogic C3 PLL Clock Controller driver"); MODULE_AUTHOR("Chuan Liu "); MODULE_LICENSE("GPL");