drivers/clk/mediatek/clk-mt7981-infracfg.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2021 MediaTek Inc.
   4  * Author: Sam Shih <sam.shih@mediatek.com>
   5  * Author: Wenzhen Yu <wenzhen.yu@mediatek.com>
   6  * Author: Jianhui Zhao <zhaojh329@gmail.com>
   7  * Author: Daniel Golle <daniel@makrotopia.org>
   8  */
   9
  10 #include <linux/clk-provider.h>
  11 #include <linux/mod_devicetable.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/mediatek,mt7981-clk.h>
  18 #include <linux/clk.h>
  19
  20 static DEFINE_SPINLOCK(mt7981_clk_lock);
  21
  22 static const struct mtk_fixed_factor infra_divs[] = {
  23         FACTOR(CLK_INFRA_66M_MCK, "infra_66m_mck", "sysaxi_sel", 1, 2),
  24 };
  25
  26 static const char *const infra_uart_parent[] __initconst = { "csw_f26m_sel",
  27                                                                 "uart_sel" };
  28
  29 static const char *const infra_spi0_parents[] __initconst = { "i2c_sel",
  30                                                               "spi_sel" };
  31
  32 static const char *const infra_spi1_parents[] __initconst = { "i2c_sel",
  33                                                               "spim_mst_sel" };
  34
  35 static const char *const infra_pwm1_parents[] __initconst = { "pwm_sel" };
  36
  37 static const char *const infra_pwm_bsel_parents[] __initconst = {
  38         "cb_rtc_32p7k", "csw_f26m_sel", "infra_66m_mck", "pwm_sel"
  39 };
  40
  41 static const char *const infra_pcie_parents[] __initconst = {
  42         "cb_rtc_32p7k", "csw_f26m_sel", "cb_cksq_40m", "pextp_tl_ck_sel"
  43 };
  44
  45 static const struct mtk_mux infra_muxes[] = {
  46         /* MODULE_CLK_SEL_0 */
  47         MUX_GATE_CLR_SET_UPD(CLK_INFRA_UART0_SEL, "infra_uart0_sel",
  48                              infra_uart_parent, 0x0018, 0x0010, 0x0014, 0, 1,
  49                              -1, -1, -1),
  50         MUX_GATE_CLR_SET_UPD(CLK_INFRA_UART1_SEL, "infra_uart1_sel",
  51                              infra_uart_parent, 0x0018, 0x0010, 0x0014, 1, 1,
  52                              -1, -1, -1),
  53         MUX_GATE_CLR_SET_UPD(CLK_INFRA_UART2_SEL, "infra_uart2_sel",
  54                              infra_uart_parent, 0x0018, 0x0010, 0x0014, 2, 1,
  55                              -1, -1, -1),
  56         MUX_GATE_CLR_SET_UPD(CLK_INFRA_SPI0_SEL, "infra_spi0_sel",
  57                              infra_spi0_parents, 0x0018, 0x0010, 0x0014, 4, 1,
  58                              -1, -1, -1),
  59         MUX_GATE_CLR_SET_UPD(CLK_INFRA_SPI1_SEL, "infra_spi1_sel",
  60                              infra_spi1_parents, 0x0018, 0x0010, 0x0014, 5, 1,
  61                              -1, -1, -1),
  62         MUX_GATE_CLR_SET_UPD(CLK_INFRA_SPI2_SEL, "infra_spi2_sel",
  63                              infra_spi0_parents, 0x0018, 0x0010, 0x0014, 6, 1,
  64                              -1, -1, -1),
  65         MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM1_SEL, "infra_pwm1_sel",
  66                              infra_pwm1_parents, 0x0018, 0x0010, 0x0014, 9, 1,
  67                              -1, -1, -1),
  68         MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM2_SEL, "infra_pwm2_sel",
  69                              infra_pwm1_parents, 0x0018, 0x0010, 0x0014, 11, 1,
  70                              -1, -1, -1),
  71         MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM3_SEL, "infra_pwm3_sel",
  72                              infra_pwm1_parents, 0x0018, 0x0010, 0x0014, 15, 1,
  73                              -1, -1, -1),
  74         MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_BSEL, "infra_pwm_bsel",
  75                              infra_pwm_bsel_parents, 0x0018, 0x0010, 0x0014, 13,
  76                              2, -1, -1, -1),
  77         /* MODULE_CLK_SEL_1 */
  78         MUX_GATE_CLR_SET_UPD(CLK_INFRA_PCIE_SEL, "infra_pcie_sel",
  79                              infra_pcie_parents, 0x0028, 0x0020, 0x0024, 0, 2,
  80                              -1, -1, -1),
  81 };
  82
  83 static const struct mtk_gate_regs infra0_cg_regs = {
  84         .set_ofs = 0x40,
  85         .clr_ofs = 0x44,
  86         .sta_ofs = 0x48,
  87 };
  88
  89 static const struct mtk_gate_regs infra1_cg_regs = {
  90         .set_ofs = 0x50,
  91         .clr_ofs = 0x54,
  92         .sta_ofs = 0x58,
  93 };
  94
  95 static const struct mtk_gate_regs infra2_cg_regs = {
  96         .set_ofs = 0x60,
  97         .clr_ofs = 0x64,
  98         .sta_ofs = 0x68,
  99 };
 100
 101 #define GATE_INFRA0(_id, _name, _parent, _shift)                               \
 102         {                                                                      \
 103                 .id = _id, .name = _name, .parent_name = _parent,              \
 104                 .regs = &infra0_cg_regs, .shift = _shift,                      \
 105                 .ops = &mtk_clk_gate_ops_setclr,                               \
 106         }
 107
 108 #define GATE_INFRA1(_id, _name, _parent, _shift)                               \
 109         {                                                                      \
 110                 .id = _id, .name = _name, .parent_name = _parent,              \
 111                 .regs = &infra1_cg_regs, .shift = _shift,                      \
 112                 .ops = &mtk_clk_gate_ops_setclr,                               \
 113         }
 114
 115 #define GATE_INFRA2(_id, _name, _parent, _shift)                               \
 116         {                                                                      \
 117                 .id = _id, .name = _name, .parent_name = _parent,              \
 118                 .regs = &infra2_cg_regs, .shift = _shift,                      \
 119                 .ops = &mtk_clk_gate_ops_setclr,                               \
 120         }
 121
 122 static const struct mtk_gate infra_clks[] = {
 123         /* INFRA0 */
 124         GATE_INFRA0(CLK_INFRA_GPT_STA, "infra_gpt_sta", "infra_66m_mck", 0),
 125         GATE_INFRA0(CLK_INFRA_PWM_HCK, "infra_pwm_hck", "infra_66m_mck", 1),
 126         GATE_INFRA0(CLK_INFRA_PWM_STA, "infra_pwm_sta", "infra_pwm_bsel", 2),
 127         GATE_INFRA0(CLK_INFRA_PWM1_CK, "infra_pwm1", "infra_pwm1_sel", 3),
 128         GATE_INFRA0(CLK_INFRA_PWM2_CK, "infra_pwm2", "infra_pwm2_sel", 4),
 129         GATE_INFRA0(CLK_INFRA_CQ_DMA_CK, "infra_cq_dma", "sysaxi", 6),
 130
 131         GATE_INFRA0(CLK_INFRA_AUD_BUS_CK, "infra_aud_bus", "sysaxi", 8),
 132         GATE_INFRA0(CLK_INFRA_AUD_26M_CK, "infra_aud_26m", "csw_f26m_sel", 9),
 133         GATE_INFRA0(CLK_INFRA_AUD_L_CK, "infra_aud_l", "aud_l", 10),
 134         GATE_INFRA0(CLK_INFRA_AUD_AUD_CK, "infra_aud_aud", "a1sys", 11),
 135         GATE_INFRA0(CLK_INFRA_AUD_EG2_CK, "infra_aud_eg2", "a_tuner", 13),
 136         GATE_INFRA0(CLK_INFRA_DRAMC_26M_CK, "infra_dramc_26m", "csw_f26m_sel",
 137                     14),
 138         GATE_INFRA0(CLK_INFRA_DBG_CK, "infra_dbg", "infra_66m_mck", 15),
 139         GATE_INFRA0(CLK_INFRA_AP_DMA_CK, "infra_ap_dma", "infra_66m_mck", 16),
 140         GATE_INFRA0(CLK_INFRA_SEJ_CK, "infra_sej", "infra_66m_mck", 24),
 141         GATE_INFRA0(CLK_INFRA_SEJ_13M_CK, "infra_sej_13m", "csw_f26m_sel", 25),
 142         GATE_INFRA0(CLK_INFRA_PWM3_CK, "infra_pwm3", "infra_pwm3_sel", 27),
 143         /* INFRA1 */
 144         GATE_INFRA1(CLK_INFRA_THERM_CK, "infra_therm", "csw_f26m_sel", 0),
 145         GATE_INFRA1(CLK_INFRA_I2C0_CK, "infra_i2c0", "i2c_bck", 1),
 146         GATE_INFRA1(CLK_INFRA_UART0_CK, "infra_uart0", "infra_uart0_sel", 2),
 147         GATE_INFRA1(CLK_INFRA_UART1_CK, "infra_uart1", "infra_uart1_sel", 3),
 148         GATE_INFRA1(CLK_INFRA_UART2_CK, "infra_uart2", "infra_uart2_sel", 4),
 149         GATE_INFRA1(CLK_INFRA_SPI2_CK, "infra_spi2", "infra_spi2_sel", 6),
 150         GATE_INFRA1(CLK_INFRA_SPI2_HCK_CK, "infra_spi2_hck", "infra_66m_mck", 7),
 151         GATE_INFRA1(CLK_INFRA_NFI1_CK, "infra_nfi1", "nfi1x", 8),
 152         GATE_INFRA1(CLK_INFRA_SPINFI1_CK, "infra_spinfi1", "spinfi_bck", 9),
 153         GATE_INFRA1(CLK_INFRA_NFI_HCK_CK, "infra_nfi_hck", "infra_66m_mck", 10),
 154         GATE_INFRA1(CLK_INFRA_SPI0_CK, "infra_spi0", "infra_spi0_sel", 11),
 155         GATE_INFRA1(CLK_INFRA_SPI1_CK, "infra_spi1", "infra_spi1_sel", 12),
 156         GATE_INFRA1(CLK_INFRA_SPI0_HCK_CK, "infra_spi0_hck", "infra_66m_mck",
 157                     13),
 158         GATE_INFRA1(CLK_INFRA_SPI1_HCK_CK, "infra_spi1_hck", "infra_66m_mck",
 159                     14),
 160         GATE_INFRA1(CLK_INFRA_FRTC_CK, "infra_frtc", "cb_rtc_32k", 15),
 161         GATE_INFRA1(CLK_INFRA_MSDC_CK, "infra_msdc", "emmc_400m", 16),
 162         GATE_INFRA1(CLK_INFRA_MSDC_HCK_CK, "infra_msdc_hck", "emmc_208m", 17),
 163         GATE_INFRA1(CLK_INFRA_MSDC_133M_CK, "infra_msdc_133m", "sysaxi", 18),
 164         GATE_INFRA1(CLK_INFRA_MSDC_66M_CK, "infra_msdc_66m", "sysaxi", 19),
 165         GATE_INFRA1(CLK_INFRA_ADC_26M_CK, "infra_adc_26m", "infra_adc_frc", 20),
 166         GATE_INFRA1(CLK_INFRA_ADC_FRC_CK, "infra_adc_frc", "csw_f26m", 21),
 167         GATE_INFRA1(CLK_INFRA_FBIST2FPC_CK, "infra_fbist2fpc", "nfi1x", 23),
 168         GATE_INFRA1(CLK_INFRA_I2C_MCK_CK, "infra_i2c_mck", "sysaxi", 25),
 169         GATE_INFRA1(CLK_INFRA_I2C_PCK_CK, "infra_i2c_pck", "infra_66m_mck", 26),
 170         /* INFRA2 */
 171         GATE_INFRA2(CLK_INFRA_IUSB_133_CK, "infra_iusb_133", "sysaxi", 0),
 172         GATE_INFRA2(CLK_INFRA_IUSB_66M_CK, "infra_iusb_66m", "sysaxi", 1),
 173         GATE_INFRA2(CLK_INFRA_IUSB_SYS_CK, "infra_iusb_sys", "u2u3_sys", 2),
 174         GATE_INFRA2(CLK_INFRA_IUSB_CK, "infra_iusb", "u2u3_ref", 3),
 175         GATE_INFRA2(CLK_INFRA_IPCIE_CK, "infra_ipcie", "pextp_tl", 12),
 176         GATE_INFRA2(CLK_INFRA_IPCIE_PIPE_CK, "infra_ipcie_pipe", "cb_cksq_40m",
 177                     13),
 178         GATE_INFRA2(CLK_INFRA_IPCIER_CK, "infra_ipcier", "csw_f26m", 14),
 179         GATE_INFRA2(CLK_INFRA_IPCIEB_CK, "infra_ipcieb", "sysaxi", 15),
 180 };
 181
 182 static const struct mtk_clk_desc infracfg_desc = {
 183         .factor_clks = infra_divs,
 184         .num_factor_clks = ARRAY_SIZE(infra_divs),
 185         .mux_clks = infra_muxes,
 186         .num_mux_clks = ARRAY_SIZE(infra_muxes),
 187         .clks = infra_clks,
 188         .num_clks = ARRAY_SIZE(infra_clks),
 189         .clk_lock = &mt7981_clk_lock,
 190 };
 191
 192 static const struct of_device_id of_match_clk_mt7981_infracfg[] = {
 193         { .compatible = "mediatek,mt7981-infracfg", .data = &infracfg_desc },
 194         { /* sentinel */ }
 195 };
 196 MODULE_DEVICE_TABLE(of, of_match_clk_mt7981_infracfg);
 197
 198 static struct platform_driver clk_mt7981_infracfg_drv = {
 199         .probe = mtk_clk_simple_probe,
 200         .remove = mtk_clk_simple_remove,
 201         .driver = {
 202                 .name = "clk-mt7981-infracfg",
 203                 .of_match_table = of_match_clk_mt7981_infracfg,
 204         },
 205 };
 206 module_platform_driver(clk_mt7981_infracfg_drv);
 207
 208 MODULE_DESCRIPTION("MediaTek MT7981 infracfg clocks driver");
 209 MODULE_LICENSE("GPL");