drivers/clk/mediatek/clk-mt7986-topckgen.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2021 MediaTek Inc.
   4  * Author: Sam Shih <[email protected]>
   5  * Author: Wenzhen Yu <[email protected]>
   6  */
   7
   8 #include <linux/clk-provider.h>
   9 #include <linux/of.h>
  10 #include <linux/of_address.h>
  11 #include <linux/of_device.h>
  12 #include <linux/platform_device.h>
  13 #include "clk-mtk.h"
  14 #include "clk-gate.h"
  15 #include "clk-mux.h"
  16
  17 #include <dt-bindings/clock/mt7986-clk.h>
  18 #include <linux/clk.h>
  19
  20 static DEFINE_SPINLOCK(mt7986_clk_lock);
  21
  22 static const struct mtk_fixed_clk top_fixed_clks[] = {
  23         FIXED_CLK(CLK_TOP_XTAL, "top_xtal", "clkxtal", 40000000),
  24         FIXED_CLK(CLK_TOP_JTAG, "top_jtag", "clkxtal", 50000000),
  25 };
  26
  27 static const struct mtk_fixed_factor top_divs[] = {
  28         /* XTAL */
  29         FACTOR(CLK_TOP_XTAL_D2, "top_xtal_d2", "top_xtal", 1, 2),
  30         FACTOR(CLK_TOP_RTC_32K, "top_rtc_32k", "top_xtal", 1, 1250),
  31         FACTOR(CLK_TOP_RTC_32P7K, "top_rtc_32p7k", "top_xtal", 1, 1220),
  32         /* MPLL */
  33         FACTOR(CLK_TOP_MPLL_D2, "top_mpll_d2", "mpll", 1, 2),
  34         FACTOR(CLK_TOP_MPLL_D4, "top_mpll_d4", "mpll", 1, 4),
  35         FACTOR(CLK_TOP_MPLL_D8, "top_mpll_d8", "mpll", 1, 8),
  36         FACTOR(CLK_TOP_MPLL_D8_D2, "top_mpll_d8_d2", "mpll", 1, 16),
  37         FACTOR(CLK_TOP_MPLL_D3_D2, "top_mpll_d3_d2", "mpll", 1, 6),
  38         /* MMPLL */
  39         FACTOR(CLK_TOP_MMPLL_D2, "top_mmpll_d2", "mmpll", 1, 2),
  40         FACTOR(CLK_TOP_MMPLL_D4, "top_mmpll_d4", "mmpll", 1, 4),
  41         FACTOR(CLK_TOP_MMPLL_D8, "top_mmpll_d8", "mmpll", 1, 8),
  42         FACTOR(CLK_TOP_MMPLL_D8_D2, "top_mmpll_d8_d2", "mmpll", 1, 16),
  43         FACTOR(CLK_TOP_MMPLL_D3_D8, "top_mmpll_d3_d8", "mmpll", 1, 24),
  44         FACTOR(CLK_TOP_MMPLL_U2PHY, "top_mmpll_u2phy", "mmpll", 1, 30),
  45         /* APLL2 */
  46         FACTOR(CLK_TOP_APLL2_D4, "top_apll2_d4", "apll2", 1, 4),
  47         /* NET1PLL */
  48         FACTOR(CLK_TOP_NET1PLL_D4, "top_net1pll_d4", "net1pll", 1, 4),
  49         FACTOR(CLK_TOP_NET1PLL_D5, "top_net1pll_d5", "net1pll", 1, 5),
  50         FACTOR(CLK_TOP_NET1PLL_D5_D2, "top_net1pll_d5_d2", "net1pll", 1, 10),
  51         FACTOR(CLK_TOP_NET1PLL_D5_D4, "top_net1pll_d5_d4", "net1pll", 1, 20),
  52         FACTOR(CLK_TOP_NET1PLL_D8_D2, "top_net1pll_d8_d2", "net1pll", 1, 16),
  53         FACTOR(CLK_TOP_NET1PLL_D8_D4, "top_net1pll_d8_d4", "net1pll", 1, 32),
  54         /* NET2PLL */
  55         FACTOR(CLK_TOP_NET2PLL_D4, "top_net2pll_d4", "net2pll", 1, 4),
  56         FACTOR(CLK_TOP_NET2PLL_D4_D2, "top_net2pll_d4_d2", "net2pll", 1, 8),
  57         FACTOR(CLK_TOP_NET2PLL_D3_D2, "top_net2pll_d3_d2", "net2pll", 1, 2),
  58         /* WEDMCUPLL */
  59         FACTOR(CLK_TOP_WEDMCUPLL_D5_D2, "top_wedmcupll_d5_d2", "wedmcupll", 1,
  60                10),
  61 };
  62
  63 static const char *const nfi1x_parents[] __initconst = { "top_xtal",
  64                                                          "top_mmpll_d8",
  65                                                          "top_net1pll_d8_d2",
  66                                                          "top_net2pll_d3_d2",
  67                                                          "top_mpll_d4",
  68                                                          "top_mmpll_d8_d2",
  69                                                          "top_wedmcupll_d5_d2",
  70                                                          "top_mpll_d8" };
  71
  72 static const char *const spinfi_parents[] __initconst = {
  73         "top_xtal_d2",     "top_xtal",  "top_net1pll_d5_d4",
  74         "top_mpll_d4",     "top_mmpll_d8_d2", "top_wedmcupll_d5_d2",
  75         "top_mmpll_d3_d8", "top_mpll_d8"
  76 };
  77
  78 static const char *const spi_parents[] __initconst = {
  79         "top_xtal",       "top_mpll_d2",        "top_mmpll_d8",
  80         "top_net1pll_d8_d2", "top_net2pll_d3_d2",  "top_net1pll_d5_d4",
  81         "top_mpll_d4",       "top_wedmcupll_d5_d2"
  82 };
  83
  84 static const char *const uart_parents[] __initconst = { "top_xtal",
  85                                                         "top_mpll_d8",
  86                                                         "top_mpll_d8_d2" };
  87
  88 static const char *const pwm_parents[] __initconst = {
  89         "top_xtal", "top_net1pll_d8_d2", "top_net1pll_d5_d4", "top_mpll_d4"
  90 };
  91
  92 static const char *const i2c_parents[] __initconst = {
  93         "top_xtal", "top_net1pll_d5_d4", "top_mpll_d4", "top_net1pll_d8_d4"
  94 };
  95
  96 static const char *const pextp_tl_ck_parents[] __initconst = {
  97         "top_xtal", "top_net1pll_d5_d4", "top_net2pll_d4_d2", "top_rtc_32k"
  98 };
  99
 100 static const char *const emmc_250m_parents[] __initconst = {
 101         "top_xtal", "top_net1pll_d5_d2"
 102 };
 103
 104 static const char *const emmc_416m_parents[] __initconst = { "top_xtal",
 105                                                              "mpll" };
 106
 107 static const char *const f_26m_adc_parents[] __initconst = { "top_xtal",
 108                                                              "top_mpll_d8_d2" };
 109
 110 static const char *const dramc_md32_parents[] __initconst = { "top_xtal",
 111                                                               "top_mpll_d2" };
 112
 113 static const char *const sysaxi_parents[] __initconst = { "top_xtal",
 114                                                           "top_net1pll_d8_d2",
 115                                                           "top_net2pll_d4" };
 116
 117 static const char *const sysapb_parents[] __initconst = { "top_xtal",
 118                                                           "top_mpll_d3_d2",
 119                                                           "top_net2pll_d4_d2" };
 120
 121 static const char *const arm_db_main_parents[] __initconst = {
 122         "top_xtal", "top_net2pll_d3_d2"
 123 };
 124
 125 static const char *const arm_db_jtsel_parents[] __initconst = { "top_jtag",
 126                                                                 "top_xtal" };
 127
 128 static const char *const netsys_parents[] __initconst = { "top_xtal",
 129                                                           "top_mmpll_d4" };
 130
 131 static const char *const netsys_500m_parents[] __initconst = {
 132         "top_xtal", "top_net1pll_d5"
 133 };
 134
 135 static const char *const netsys_mcu_parents[] __initconst = {
 136         "top_xtal", "wedmcupll", "top_mmpll_d2", "top_net1pll_d4",
 137         "top_net1pll_d5"
 138 };
 139
 140 static const char *const netsys_2x_parents[] __initconst = {
 141         "top_xtal", "net2pll", "wedmcupll", "top_mmpll_d2"
 142 };
 143
 144 static const char *const sgm_325m_parents[] __initconst = { "top_xtal",
 145                                                             "sgmpll" };
 146
 147 static const char *const sgm_reg_parents[] __initconst = {
 148         "top_xtal", "top_net1pll_d8_d4"
 149 };
 150
 151 static const char *const a1sys_parents[] __initconst = { "top_xtal",
 152                                                          "top_apll2_d4" };
 153
 154 static const char *const conn_mcusys_parents[] __initconst = { "top_xtal",
 155                                                                "top_mmpll_d2" };
 156
 157 static const char *const eip_b_parents[] __initconst = { "top_xtal",
 158                                                          "net2pll" };
 159
 160 static const char *const aud_l_parents[] __initconst = { "top_xtal", "apll2",
 161                                                          "top_mpll_d8_d2" };
 162
 163 static const char *const a_tuner_parents[] __initconst = { "top_xtal",
 164                                                            "top_apll2_d4",
 165                                                            "top_mpll_d8_d2" };
 166
 167 static const char *const u2u3_sys_parents[] __initconst = {
 168         "top_xtal", "top_net1pll_d5_d4"
 169 };
 170
 171 static const char *const da_u2_refsel_parents[] __initconst = {
 172         "top_xtal", "top_mmpll_u2phy"
 173 };
 174
 175 static const struct mtk_mux top_muxes[] = {
 176         /* CLK_CFG_0 */
 177         MUX_GATE_CLR_SET_UPD(CLK_TOP_NFI1X_SEL, "nfi1x_sel", nfi1x_parents,
 178                              0x000, 0x004, 0x008, 0, 3, 7, 0x1C0, 0),
 179         MUX_GATE_CLR_SET_UPD(CLK_TOP_SPINFI_SEL, "spinfi_sel", spinfi_parents,
 180                              0x000, 0x004, 0x008, 8, 3, 15, 0x1C0, 1),
 181         MUX_GATE_CLR_SET_UPD(CLK_TOP_SPI_SEL, "spi_sel", spi_parents, 0x000,
 182                              0x004, 0x008, 16, 3, 23, 0x1C0, 2),
 183         MUX_GATE_CLR_SET_UPD(CLK_TOP_SPIM_MST_SEL, "spim_mst_sel", spi_parents,
 184                              0x000, 0x004, 0x008, 24, 3, 31, 0x1C0, 3),
 185         /* CLK_CFG_1 */
 186         MUX_GATE_CLR_SET_UPD(CLK_TOP_UART_SEL, "uart_sel", uart_parents, 0x010,
 187                              0x014, 0x018, 0, 2, 7, 0x1C0, 4),
 188         MUX_GATE_CLR_SET_UPD(CLK_TOP_PWM_SEL, "pwm_sel", pwm_parents, 0x010,
 189                              0x014, 0x018, 8, 2, 15, 0x1C0, 5),
 190         MUX_GATE_CLR_SET_UPD(CLK_TOP_I2C_SEL, "i2c_sel", i2c_parents, 0x010,
 191                              0x014, 0x018, 16, 2, 23, 0x1C0, 6),
 192         MUX_GATE_CLR_SET_UPD(CLK_TOP_PEXTP_TL_SEL, "pextp_tl_ck_sel",
 193                              pextp_tl_ck_parents, 0x010, 0x014, 0x018, 24, 2,
 194                              31, 0x1C0, 7),
 195         /* CLK_CFG_2 */
 196         MUX_GATE_CLR_SET_UPD(CLK_TOP_EMMC_250M_SEL, "emmc_250m_sel",
 197                              emmc_250m_parents, 0x020, 0x024, 0x028, 0, 1, 7,
 198                              0x1C0, 8),
 199         MUX_GATE_CLR_SET_UPD(CLK_TOP_EMMC_416M_SEL, "emmc_416m_sel",
 200                              emmc_416m_parents, 0x020, 0x024, 0x028, 8, 1, 15,
 201                              0x1C0, 9),
 202         MUX_GATE_CLR_SET_UPD(CLK_TOP_F_26M_ADC_SEL, "f_26m_adc_sel",
 203                              f_26m_adc_parents, 0x020, 0x024, 0x028, 16, 1, 23,
 204                              0x1C0, 10),
 205         MUX_GATE_CLR_SET_UPD(CLK_TOP_DRAMC_SEL, "dramc_sel", f_26m_adc_parents,
 206                              0x020, 0x024, 0x028, 24, 1, 31, 0x1C0, 11),
 207         /* CLK_CFG_3 */
 208         MUX_GATE_CLR_SET_UPD(CLK_TOP_DRAMC_MD32_SEL, "dramc_md32_sel",
 209                              dramc_md32_parents, 0x030, 0x034, 0x038, 0, 1, 7,
 210                              0x1C0, 12),
 211         MUX_GATE_CLR_SET_UPD(CLK_TOP_SYSAXI_SEL, "sysaxi_sel", sysaxi_parents,
 212                              0x030, 0x034, 0x038, 8, 2, 15, 0x1C0, 13),
 213         MUX_GATE_CLR_SET_UPD(CLK_TOP_SYSAPB_SEL, "sysapb_sel", sysapb_parents,
 214                              0x030, 0x034, 0x038, 16, 2, 23, 0x1C0, 14),
 215         MUX_GATE_CLR_SET_UPD(CLK_TOP_ARM_DB_MAIN_SEL, "arm_db_main_sel",
 216                              arm_db_main_parents, 0x030, 0x034, 0x038, 24, 1,
 217                              31, 0x1C0, 15),
 218         /* CLK_CFG_4 */
 219         MUX_GATE_CLR_SET_UPD(CLK_TOP_ARM_DB_JTSEL, "arm_db_jtsel",
 220                              arm_db_jtsel_parents, 0x040, 0x044, 0x048, 0, 1, 7,
 221                              0x1C0, 16),
 222         MUX_GATE_CLR_SET_UPD(CLK_TOP_NETSYS_SEL, "netsys_sel", netsys_parents,
 223                              0x040, 0x044, 0x048, 8, 1, 15, 0x1C0, 17),
 224         MUX_GATE_CLR_SET_UPD(CLK_TOP_NETSYS_500M_SEL, "netsys_500m_sel",
 225                              netsys_500m_parents, 0x040, 0x044, 0x048, 16, 1,
 226                              23, 0x1C0, 18),
 227         MUX_GATE_CLR_SET_UPD(CLK_TOP_NETSYS_MCU_SEL, "netsys_mcu_sel",
 228                              netsys_mcu_parents, 0x040, 0x044, 0x048, 24, 3, 31,
 229                              0x1C0, 19),
 230         /* CLK_CFG_5 */
 231         MUX_GATE_CLR_SET_UPD(CLK_TOP_NETSYS_2X_SEL, "netsys_2x_sel",
 232                              netsys_2x_parents, 0x050, 0x054, 0x058, 0, 2, 7,
 233                              0x1C0, 20),
 234         MUX_GATE_CLR_SET_UPD(CLK_TOP_SGM_325M_SEL, "sgm_325m_sel",
 235                              sgm_325m_parents, 0x050, 0x054, 0x058, 8, 1, 15,
 236                              0x1C0, 21),
 237         MUX_GATE_CLR_SET_UPD(CLK_TOP_SGM_REG_SEL, "sgm_reg_sel",
 238                              sgm_reg_parents, 0x050, 0x054, 0x058, 16, 1, 23,
 239                              0x1C0, 22),
 240         MUX_GATE_CLR_SET_UPD(CLK_TOP_A1SYS_SEL, "a1sys_sel", a1sys_parents,
 241                              0x050, 0x054, 0x058, 24, 1, 31, 0x1C0, 23),
 242         /* CLK_CFG_6 */
 243         MUX_GATE_CLR_SET_UPD(CLK_TOP_CONN_MCUSYS_SEL, "conn_mcusys_sel",
 244                              conn_mcusys_parents, 0x060, 0x064, 0x068, 0, 1, 7,
 245                              0x1C0, 24),
 246         MUX_GATE_CLR_SET_UPD(CLK_TOP_EIP_B_SEL, "eip_b_sel", eip_b_parents,
 247                              0x060, 0x064, 0x068, 8, 1, 15, 0x1C0, 25),
 248         MUX_GATE_CLR_SET_UPD(CLK_TOP_PCIE_PHY_SEL, "pcie_phy_sel",
 249                              f_26m_adc_parents, 0x060, 0x064, 0x068, 16, 1, 23,
 250                              0x1C0, 26),
 251         MUX_GATE_CLR_SET_UPD(CLK_TOP_USB3_PHY_SEL, "usb3_phy_sel",
 252                              f_26m_adc_parents, 0x060, 0x064, 0x068, 24, 1, 31,
 253                              0x1C0, 27),
 254         /* CLK_CFG_7 */
 255         MUX_GATE_CLR_SET_UPD(CLK_TOP_F26M_SEL, "csw_f26m_sel",
 256                              f_26m_adc_parents, 0x070, 0x074, 0x078, 0, 1, 7,
 257                              0x1C0, 28),
 258         MUX_GATE_CLR_SET_UPD(CLK_TOP_AUD_L_SEL, "aud_l_sel", aud_l_parents,
 259                              0x070, 0x074, 0x078, 8, 2, 15, 0x1C0, 29),
 260         MUX_GATE_CLR_SET_UPD(CLK_TOP_A_TUNER_SEL, "a_tuner_sel",
 261                              a_tuner_parents, 0x070, 0x074, 0x078, 16, 2, 23,
 262                              0x1C0, 30),
 263         MUX_GATE_CLR_SET_UPD(CLK_TOP_U2U3_SEL, "u2u3_sel", f_26m_adc_parents,
 264                              0x070, 0x074, 0x078, 24, 1, 31, 0x1C4, 0),
 265         /* CLK_CFG_8 */
 266         MUX_GATE_CLR_SET_UPD(CLK_TOP_U2U3_SYS_SEL, "u2u3_sys_sel",
 267                              u2u3_sys_parents, 0x080, 0x084, 0x088, 0, 1, 7,
 268                              0x1C4, 1),
 269         MUX_GATE_CLR_SET_UPD(CLK_TOP_U2U3_XHCI_SEL, "u2u3_xhci_sel",
 270                              u2u3_sys_parents, 0x080, 0x084, 0x088, 8, 1, 15,
 271                              0x1C4, 2),
 272         MUX_GATE_CLR_SET_UPD(CLK_TOP_DA_U2_REFSEL, "da_u2_refsel",
 273                              da_u2_refsel_parents, 0x080, 0x084, 0x088, 16, 1,
 274                              23, 0x1C4, 3),
 275         MUX_GATE_CLR_SET_UPD(CLK_TOP_DA_U2_CK_1P_SEL, "da_u2_ck_1p_sel",
 276                              da_u2_refsel_parents, 0x080, 0x084, 0x088, 24, 1,
 277                              31, 0x1C4, 4),
 278         /* CLK_CFG_9 */
 279         MUX_GATE_CLR_SET_UPD(CLK_TOP_AP2CNN_HOST_SEL, "ap2cnn_host_sel",
 280                              sgm_reg_parents, 0x090, 0x094, 0x098, 0, 1, 7,
 281                              0x1C4, 5),
 282 };
 283
 284 static int clk_mt7986_topckgen_probe(struct platform_device *pdev)
 285 {
 286         struct clk_hw_onecell_data *clk_data;
 287         struct device_node *node = pdev->dev.of_node;
 288         int r;
 289         void __iomem *base;
 290         int nr = ARRAY_SIZE(top_fixed_clks) + ARRAY_SIZE(top_divs) +
 291                  ARRAY_SIZE(top_muxes);
 292
 293         base = of_iomap(node, 0);
 294         if (!base) {
 295                 pr_err("%s(): ioremap failed\n", __func__);
 296                 return -ENOMEM;
 297         }
 298
 299         clk_data = mtk_alloc_clk_data(nr);
 300         if (!clk_data)
 301                 return -ENOMEM;
 302
 303         mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
 304                                     clk_data);
 305         mtk_clk_register_factors(top_divs, ARRAY_SIZE(top_divs), clk_data);
 306         mtk_clk_register_muxes(top_muxes, ARRAY_SIZE(top_muxes), node,
 307                                &mt7986_clk_lock, clk_data);
 308
 309         clk_prepare_enable(clk_data->hws[CLK_TOP_SYSAXI_SEL]->clk);
 310         clk_prepare_enable(clk_data->hws[CLK_TOP_SYSAPB_SEL]->clk);
 311         clk_prepare_enable(clk_data->hws[CLK_TOP_DRAMC_SEL]->clk);
 312         clk_prepare_enable(clk_data->hws[CLK_TOP_DRAMC_MD32_SEL]->clk);
 313         clk_prepare_enable(clk_data->hws[CLK_TOP_F26M_SEL]->clk);
 314         clk_prepare_enable(clk_data->hws[CLK_TOP_SGM_REG_SEL]->clk);
 315
 316         r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
 317
 318         if (r) {
 319                 pr_err("%s(): could not register clock provider: %d\n",
 320                        __func__, r);
 321                 goto free_topckgen_data;
 322         }
 323         return r;
 324
 325 free_topckgen_data:
 326         mtk_free_clk_data(clk_data);
 327         return r;
 328 }
 329
 330 static const struct of_device_id of_match_clk_mt7986_topckgen[] = {
 331         { .compatible = "mediatek,mt7986-topckgen", },
 332         {}
 333 };
 334
 335 static struct platform_driver clk_mt7986_topckgen_drv = {
 336         .probe = clk_mt7986_topckgen_probe,
 337         .driver = {
 338                 .name = "clk-mt7986-topckgen",
 339                 .of_match_table = of_match_clk_mt7986_topckgen,
 340         },
 341 };
 342 builtin_platform_driver(clk_mt7986_topckgen_drv);