drivers/clk/sunxi-ng/ccu-sun50i-a100-r.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2020 Yangtao Li <frank@allwinnertech.com>
   4  */
   5
   6 #include <linux/clk-provider.h>
   7 #include <linux/module.h>
   8 #include <linux/of_address.h>
   9 #include <linux/platform_device.h>
  10
  11 #include "ccu_common.h"
  12 #include "ccu_reset.h"
  13
  14 #include "ccu_div.h"
  15 #include "ccu_gate.h"
  16 #include "ccu_mp.h"
  17 #include "ccu_nm.h"
  18
  19 #include "ccu-sun50i-a100-r.h"
  20
  21 static const char * const cpus_r_apb2_parents[] = { "dcxo24M", "osc32k",
  22                                                      "iosc", "pll-periph0" };
  23 static const struct ccu_mux_var_prediv cpus_r_apb2_predivs[] = {
  24         { .index = 3, .shift = 0, .width = 5 },
  25 };
  26
  27 static struct ccu_div r_cpus_clk = {
  28         .div            = _SUNXI_CCU_DIV_FLAGS(8, 2, CLK_DIVIDER_POWER_OF_TWO),
  29
  30         .mux            = {
  31                 .shift  = 24,
  32                 .width  = 2,
  33
  34                 .var_predivs    = cpus_r_apb2_predivs,
  35                 .n_var_predivs  = ARRAY_SIZE(cpus_r_apb2_predivs),
  36         },
  37
  38         .common         = {
  39                 .reg            = 0x000,
  40                 .features       = CCU_FEATURE_VARIABLE_PREDIV,
  41                 .hw.init        = CLK_HW_INIT_PARENTS("cpus",
  42                                                       cpus_r_apb2_parents,
  43                                                       &ccu_div_ops,
  44                                                       0),
  45         },
  46 };
  47
  48 static CLK_FIXED_FACTOR_HW(r_ahb_clk, "r-ahb", &r_cpus_clk.common.hw, 1, 1, 0);
  49
  50 static struct ccu_div r_apb1_clk = {
  51         .div            = _SUNXI_CCU_DIV(0, 2),
  52
  53         .common         = {
  54                 .reg            = 0x00c,
  55                 .hw.init        = CLK_HW_INIT("r-apb1",
  56                                               "r-ahb",
  57                                               &ccu_div_ops,
  58                                               0),
  59         },
  60 };
  61
  62 static struct ccu_div r_apb2_clk = {
  63         .div            = _SUNXI_CCU_DIV_FLAGS(8, 2, CLK_DIVIDER_POWER_OF_TWO),
  64
  65         .mux            = {
  66                 .shift  = 24,
  67                 .width  = 2,
  68
  69                 .var_predivs    = cpus_r_apb2_predivs,
  70                 .n_var_predivs  = ARRAY_SIZE(cpus_r_apb2_predivs),
  71         },
  72
  73         .common         = {
  74                 .reg            = 0x010,
  75                 .features       = CCU_FEATURE_VARIABLE_PREDIV,
  76                 .hw.init        = CLK_HW_INIT_PARENTS("r-apb2",
  77                                                       cpus_r_apb2_parents,
  78                                                       &ccu_div_ops,
  79                                                       0),
  80         },
  81 };
  82
  83 static const struct clk_parent_data clk_parent_r_apb1[] = {
  84         { .hw = &r_apb1_clk.common.hw },
  85 };
  86
  87 static const struct clk_parent_data clk_parent_r_apb2[] = {
  88         { .hw = &r_apb2_clk.common.hw },
  89 };
  90
  91 static SUNXI_CCU_GATE_DATA(r_apb1_timer_clk, "r-apb1-timer", clk_parent_r_apb1,
  92                            0x11c, BIT(0), 0);
  93
  94 static SUNXI_CCU_GATE_DATA(r_apb1_twd_clk, "r-apb1-twd", clk_parent_r_apb1,
  95                            0x12c, BIT(0), 0);
  96
  97 static const char * const r_apb1_pwm_clk_parents[] = { "dcxo24M", "osc32k",
  98                                                        "iosc" };
  99 static SUNXI_CCU_MUX(r_apb1_pwm_clk, "r-apb1-pwm", r_apb1_pwm_clk_parents,
 100                      0x130, 24, 2, 0);
 101
 102 static SUNXI_CCU_GATE_DATA(r_apb1_bus_pwm_clk, "r-apb1-bus-pwm",
 103                            clk_parent_r_apb1, 0x13c, BIT(0), 0);
 104
 105 static SUNXI_CCU_GATE_DATA(r_apb1_ppu_clk, "r-apb1-ppu", clk_parent_r_apb1,
 106                            0x17c, BIT(0), 0);
 107
 108 static SUNXI_CCU_GATE_DATA(r_apb2_uart_clk, "r-apb2-uart", clk_parent_r_apb2,
 109                            0x18c, BIT(0), 0);
 110
 111 static SUNXI_CCU_GATE_DATA(r_apb2_i2c0_clk, "r-apb2-i2c0", clk_parent_r_apb2,
 112                            0x19c, BIT(0), 0);
 113
 114 static SUNXI_CCU_GATE_DATA(r_apb2_i2c1_clk, "r-apb2-i2c1", clk_parent_r_apb2,
 115                            0x19c, BIT(1), 0);
 116
 117 static const char * const r_apb1_ir_rx_parents[] = { "osc32k", "dcxo24M" };
 118 static SUNXI_CCU_MP_WITH_MUX_GATE(r_apb1_ir_rx_clk, "r-apb1-ir-rx",
 119                                   r_apb1_ir_rx_parents, 0x1c0,
 120                                   0, 5,         /* M */
 121                                   8, 2,         /* P */
 122                                   24, 1,        /* mux */
 123                                   BIT(31),      /* gate */
 124                                   0);
 125
 126 static SUNXI_CCU_GATE_DATA(r_apb1_bus_ir_rx_clk, "r-apb1-bus-ir-rx",
 127                            clk_parent_r_apb1, 0x1cc, BIT(0), 0);
 128
 129 static SUNXI_CCU_GATE(r_ahb_bus_rtc_clk, "r-ahb-rtc", "r-ahb",
 130                       0x20c, BIT(0), 0);
 131
 132 static struct ccu_common *sun50i_a100_r_ccu_clks[] = {
 133         &r_cpus_clk.common,
 134         &r_apb1_clk.common,
 135         &r_apb2_clk.common,
 136         &r_apb1_timer_clk.common,
 137         &r_apb1_twd_clk.common,
 138         &r_apb1_pwm_clk.common,
 139         &r_apb1_bus_pwm_clk.common,
 140         &r_apb1_ppu_clk.common,
 141         &r_apb2_uart_clk.common,
 142         &r_apb2_i2c0_clk.common,
 143         &r_apb2_i2c1_clk.common,
 144         &r_apb1_ir_rx_clk.common,
 145         &r_apb1_bus_ir_rx_clk.common,
 146         &r_ahb_bus_rtc_clk.common,
 147 };
 148
 149 static struct clk_hw_onecell_data sun50i_a100_r_hw_clks = {
 150         .hws    = {
 151                 [CLK_R_CPUS]            = &r_cpus_clk.common.hw,
 152                 [CLK_R_AHB]             = &r_ahb_clk.hw,
 153                 [CLK_R_APB1]            = &r_apb1_clk.common.hw,
 154                 [CLK_R_APB2]            = &r_apb2_clk.common.hw,
 155                 [CLK_R_APB1_TIMER]      = &r_apb1_timer_clk.common.hw,
 156                 [CLK_R_APB1_TWD]        = &r_apb1_twd_clk.common.hw,
 157                 [CLK_R_APB1_PWM]        = &r_apb1_pwm_clk.common.hw,
 158                 [CLK_R_APB1_BUS_PWM]    = &r_apb1_bus_pwm_clk.common.hw,
 159                 [CLK_R_APB1_PPU]        = &r_apb1_ppu_clk.common.hw,
 160                 [CLK_R_APB2_UART]       = &r_apb2_uart_clk.common.hw,
 161                 [CLK_R_APB2_I2C0]       = &r_apb2_i2c0_clk.common.hw,
 162                 [CLK_R_APB2_I2C1]       = &r_apb2_i2c1_clk.common.hw,
 163                 [CLK_R_APB1_IR]         = &r_apb1_ir_rx_clk.common.hw,
 164                 [CLK_R_APB1_BUS_IR]     = &r_apb1_bus_ir_rx_clk.common.hw,
 165                 [CLK_R_AHB_BUS_RTC]     = &r_ahb_bus_rtc_clk.common.hw,
 166         },
 167         .num    = CLK_NUMBER,
 168 };
 169
 170 static struct ccu_reset_map sun50i_a100_r_ccu_resets[] = {
 171         [RST_R_APB1_TIMER]      =  { 0x11c, BIT(16) },
 172         [RST_R_APB1_BUS_PWM]    =  { 0x13c, BIT(16) },
 173         [RST_R_APB1_PPU]        =  { 0x17c, BIT(16) },
 174         [RST_R_APB2_UART]       =  { 0x18c, BIT(16) },
 175         [RST_R_APB2_I2C0]       =  { 0x19c, BIT(16) },
 176         [RST_R_APB2_I2C1]       =  { 0x19c, BIT(17) },
 177         [RST_R_APB1_BUS_IR]     =  { 0x1cc, BIT(16) },
 178         [RST_R_AHB_BUS_RTC]     =  { 0x20c, BIT(16) },
 179 };
 180
 181 static const struct sunxi_ccu_desc sun50i_a100_r_ccu_desc = {
 182         .ccu_clks       = sun50i_a100_r_ccu_clks,
 183         .num_ccu_clks   = ARRAY_SIZE(sun50i_a100_r_ccu_clks),
 184
 185         .hw_clks        = &sun50i_a100_r_hw_clks,
 186
 187         .resets         = sun50i_a100_r_ccu_resets,
 188         .num_resets     = ARRAY_SIZE(sun50i_a100_r_ccu_resets),
 189 };
 190
 191 static int sun50i_a100_r_ccu_probe(struct platform_device *pdev)
 192 {
 193         void __iomem *reg;
 194
 195         reg = devm_platform_ioremap_resource(pdev, 0);
 196         if (IS_ERR(reg))
 197                 return PTR_ERR(reg);
 198
 199         return sunxi_ccu_probe(pdev->dev.of_node, reg, &sun50i_a100_r_ccu_desc);
 200 }
 201
 202 static const struct of_device_id sun50i_a100_r_ccu_ids[] = {
 203         { .compatible = "allwinner,sun50i-a100-r-ccu" },
 204         { }
 205 };
 206
 207 static struct platform_driver sun50i_a100_r_ccu_driver = {
 208         .probe  = sun50i_a100_r_ccu_probe,
 209         .driver = {
 210                 .name   = "sun50i-a100-r-ccu",
 211                 .of_match_table = sun50i_a100_r_ccu_ids,
 212         },
 213 };
 214 module_platform_driver(sun50i_a100_r_ccu_driver);