| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Amlogic Meson-AXG Clock Controller Driver |
| * |
| * Copyright (c) 2016 Baylibre SAS. |
| * Author: Michael Turquette <mturquette@baylibre.com> |
| * |
| * Copyright (c) 2018 Amlogic, inc. |
| * Author: Qiufang Dai <qiufang.dai@amlogic.com> |
| */ |
| #include <linux/clk-provider.h> |
| #include <linux/platform_device.h> |
| #include <linux/reset-controller.h> |
| #include <linux/mfd/syscon.h> |
| #include <linux/module.h> |
| #include "meson-aoclk.h" |
| |
| #include "clk-regmap.h" |
| #include "clk-dualdiv.h" |
| |
| #include <dt-bindings/clock/axg-aoclkc.h> |
| #include <dt-bindings/reset/axg-aoclkc.h> |
| |
| /* |
| * AO Configuration Clock registers offsets |
| * Register offsets from the data sheet must be multiplied by 4. |
| */ |
| #define AO_RTI_PWR_CNTL_REG1 0x0C |
| #define AO_RTI_PWR_CNTL_REG0 0x10 |
| #define AO_RTI_GEN_CNTL_REG0 0x40 |
| #define AO_OSCIN_CNTL 0x58 |
| #define AO_CRT_CLK_CNTL1 0x68 |
| #define AO_SAR_CLK 0x90 |
| #define AO_RTC_ALT_CLK_CNTL0 0x94 |
| #define AO_RTC_ALT_CLK_CNTL1 0x98 |
| |
| #define AXG_AO_GATE(_name, _bit) \ |
| static struct clk_regmap axg_aoclk_##_name = { \ |
| .data = &(struct clk_regmap_gate_data) { \ |
| .offset = (AO_RTI_GEN_CNTL_REG0), \ |
| .bit_idx = (_bit), \ |
| }, \ |
| .hw.init = &(struct clk_init_data) { \ |
| .name = "axg_ao_" #_name, \ |
| .ops = &clk_regmap_gate_ops, \ |
| .parent_data = &(const struct clk_parent_data) { \ |
| .fw_name = "mpeg-clk", \ |
| }, \ |
| .num_parents = 1, \ |
| .flags = CLK_IGNORE_UNUSED, \ |
| }, \ |
| } |
| |
| AXG_AO_GATE(remote, 0); |
| AXG_AO_GATE(i2c_master, 1); |
| AXG_AO_GATE(i2c_slave, 2); |
| AXG_AO_GATE(uart1, 3); |
| AXG_AO_GATE(uart2, 5); |
| AXG_AO_GATE(ir_blaster, 6); |
| AXG_AO_GATE(saradc, 7); |
| |
| static struct clk_regmap axg_aoclk_cts_oscin = { |
| .data = &(struct clk_regmap_gate_data){ |
| .offset = AO_RTI_PWR_CNTL_REG0, |
| .bit_idx = 14, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "cts_oscin", |
| .ops = &clk_regmap_gate_ro_ops, |
| .parent_data = &(const struct clk_parent_data) { |
| .fw_name = "xtal", |
| }, |
| .num_parents = 1, |
| }, |
| }; |
| |
| static struct clk_regmap axg_aoclk_32k_pre = { |
| .data = &(struct clk_regmap_gate_data){ |
| .offset = AO_RTC_ALT_CLK_CNTL0, |
| .bit_idx = 31, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_32k_pre", |
| .ops = &clk_regmap_gate_ops, |
| .parent_hws = (const struct clk_hw *[]) { |
| &axg_aoclk_cts_oscin.hw |
| }, |
| .num_parents = 1, |
| }, |
| }; |
| |
| static const struct meson_clk_dualdiv_param axg_32k_div_table[] = { |
| { |
| .dual = 1, |
| .n1 = 733, |
| .m1 = 8, |
| .n2 = 732, |
| .m2 = 11, |
| }, {} |
| }; |
| |
| static struct clk_regmap axg_aoclk_32k_div = { |
| .data = &(struct meson_clk_dualdiv_data){ |
| .n1 = { |
| .reg_off = AO_RTC_ALT_CLK_CNTL0, |
| .shift = 0, |
| .width = 12, |
| }, |
| .n2 = { |
| .reg_off = AO_RTC_ALT_CLK_CNTL0, |
| .shift = 12, |
| .width = 12, |
| }, |
| .m1 = { |
| .reg_off = AO_RTC_ALT_CLK_CNTL1, |
| .shift = 0, |
| .width = 12, |
| }, |
| .m2 = { |
| .reg_off = AO_RTC_ALT_CLK_CNTL1, |
| .shift = 12, |
| .width = 12, |
| }, |
| .dual = { |
| .reg_off = AO_RTC_ALT_CLK_CNTL0, |
| .shift = 28, |
| .width = 1, |
| }, |
| .table = axg_32k_div_table, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_32k_div", |
| .ops = &meson_clk_dualdiv_ops, |
| .parent_hws = (const struct clk_hw *[]) { |
| &axg_aoclk_32k_pre.hw |
| }, |
| .num_parents = 1, |
| }, |
| }; |
| |
| static struct clk_regmap axg_aoclk_32k_sel = { |
| .data = &(struct clk_regmap_mux_data) { |
| .offset = AO_RTC_ALT_CLK_CNTL1, |
| .mask = 0x1, |
| .shift = 24, |
| .flags = CLK_MUX_ROUND_CLOSEST, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_32k_sel", |
| .ops = &clk_regmap_mux_ops, |
| .parent_hws = (const struct clk_hw *[]) { |
| &axg_aoclk_32k_div.hw, |
| &axg_aoclk_32k_pre.hw, |
| }, |
| .num_parents = 2, |
| .flags = CLK_SET_RATE_PARENT, |
| }, |
| }; |
| |
| static struct clk_regmap axg_aoclk_32k = { |
| .data = &(struct clk_regmap_gate_data){ |
| .offset = AO_RTC_ALT_CLK_CNTL0, |
| .bit_idx = 30, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_32k", |
| .ops = &clk_regmap_gate_ops, |
| .parent_hws = (const struct clk_hw *[]) { |
| &axg_aoclk_32k_sel.hw |
| }, |
| .num_parents = 1, |
| .flags = CLK_SET_RATE_PARENT, |
| }, |
| }; |
| |
| static struct clk_regmap axg_aoclk_cts_rtc_oscin = { |
| .data = &(struct clk_regmap_mux_data) { |
| .offset = AO_RTI_PWR_CNTL_REG0, |
| .mask = 0x1, |
| .shift = 10, |
| .flags = CLK_MUX_ROUND_CLOSEST, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_cts_rtc_oscin", |
| .ops = &clk_regmap_mux_ops, |
| .parent_data = (const struct clk_parent_data []) { |
| { .hw = &axg_aoclk_32k.hw }, |
| { .fw_name = "ext_32k-0", }, |
| }, |
| .num_parents = 2, |
| .flags = CLK_SET_RATE_PARENT, |
| }, |
| }; |
| |
| static struct clk_regmap axg_aoclk_clk81 = { |
| .data = &(struct clk_regmap_mux_data) { |
| .offset = AO_RTI_PWR_CNTL_REG0, |
| .mask = 0x1, |
| .shift = 8, |
| .flags = CLK_MUX_ROUND_CLOSEST, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_clk81", |
| .ops = &clk_regmap_mux_ro_ops, |
| .parent_data = (const struct clk_parent_data []) { |
| { .fw_name = "mpeg-clk", }, |
| { .hw = &axg_aoclk_cts_rtc_oscin.hw }, |
| }, |
| .num_parents = 2, |
| .flags = CLK_SET_RATE_PARENT, |
| }, |
| }; |
| |
| static struct clk_regmap axg_aoclk_saradc_mux = { |
| .data = &(struct clk_regmap_mux_data) { |
| .offset = AO_SAR_CLK, |
| .mask = 0x3, |
| .shift = 9, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_saradc_mux", |
| .ops = &clk_regmap_mux_ops, |
| .parent_data = (const struct clk_parent_data []) { |
| { .fw_name = "xtal", }, |
| { .hw = &axg_aoclk_clk81.hw }, |
| }, |
| .num_parents = 2, |
| }, |
| }; |
| |
| static struct clk_regmap axg_aoclk_saradc_div = { |
| .data = &(struct clk_regmap_div_data) { |
| .offset = AO_SAR_CLK, |
| .shift = 0, |
| .width = 8, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_saradc_div", |
| .ops = &clk_regmap_divider_ops, |
| .parent_hws = (const struct clk_hw *[]) { |
| &axg_aoclk_saradc_mux.hw |
| }, |
| .num_parents = 1, |
| .flags = CLK_SET_RATE_PARENT, |
| }, |
| }; |
| |
| static struct clk_regmap axg_aoclk_saradc_gate = { |
| .data = &(struct clk_regmap_gate_data) { |
| .offset = AO_SAR_CLK, |
| .bit_idx = 8, |
| }, |
| .hw.init = &(struct clk_init_data){ |
| .name = "axg_ao_saradc_gate", |
| .ops = &clk_regmap_gate_ops, |
| .parent_hws = (const struct clk_hw *[]) { |
| &axg_aoclk_saradc_div.hw |
| }, |
| .num_parents = 1, |
| .flags = CLK_SET_RATE_PARENT, |
| }, |
| }; |
| |
| static const unsigned int axg_aoclk_reset[] = { |
| [RESET_AO_REMOTE] = 16, |
| [RESET_AO_I2C_MASTER] = 18, |
| [RESET_AO_I2C_SLAVE] = 19, |
| [RESET_AO_UART1] = 17, |
| [RESET_AO_UART2] = 22, |
| [RESET_AO_IR_BLASTER] = 23, |
| }; |
| |
| static struct clk_regmap *axg_aoclk_regmap[] = { |
| &axg_aoclk_remote, |
| &axg_aoclk_i2c_master, |
| &axg_aoclk_i2c_slave, |
| &axg_aoclk_uart1, |
| &axg_aoclk_uart2, |
| &axg_aoclk_ir_blaster, |
| &axg_aoclk_saradc, |
| &axg_aoclk_cts_oscin, |
| &axg_aoclk_32k_pre, |
| &axg_aoclk_32k_div, |
| &axg_aoclk_32k_sel, |
| &axg_aoclk_32k, |
| &axg_aoclk_cts_rtc_oscin, |
| &axg_aoclk_clk81, |
| &axg_aoclk_saradc_mux, |
| &axg_aoclk_saradc_div, |
| &axg_aoclk_saradc_gate, |
| }; |
| |
| static struct clk_hw *axg_aoclk_hw_clks[] = { |
| [CLKID_AO_REMOTE] = &axg_aoclk_remote.hw, |
| [CLKID_AO_I2C_MASTER] = &axg_aoclk_i2c_master.hw, |
| [CLKID_AO_I2C_SLAVE] = &axg_aoclk_i2c_slave.hw, |
| [CLKID_AO_UART1] = &axg_aoclk_uart1.hw, |
| [CLKID_AO_UART2] = &axg_aoclk_uart2.hw, |
| [CLKID_AO_IR_BLASTER] = &axg_aoclk_ir_blaster.hw, |
| [CLKID_AO_SAR_ADC] = &axg_aoclk_saradc.hw, |
| [CLKID_AO_CLK81] = &axg_aoclk_clk81.hw, |
| [CLKID_AO_SAR_ADC_SEL] = &axg_aoclk_saradc_mux.hw, |
| [CLKID_AO_SAR_ADC_DIV] = &axg_aoclk_saradc_div.hw, |
| [CLKID_AO_SAR_ADC_CLK] = &axg_aoclk_saradc_gate.hw, |
| [CLKID_AO_CTS_OSCIN] = &axg_aoclk_cts_oscin.hw, |
| [CLKID_AO_32K_PRE] = &axg_aoclk_32k_pre.hw, |
| [CLKID_AO_32K_DIV] = &axg_aoclk_32k_div.hw, |
| [CLKID_AO_32K_SEL] = &axg_aoclk_32k_sel.hw, |
| [CLKID_AO_32K] = &axg_aoclk_32k.hw, |
| [CLKID_AO_CTS_RTC_OSCIN] = &axg_aoclk_cts_rtc_oscin.hw, |
| }; |
| |
| static const struct meson_aoclk_data axg_aoclkc_data = { |
| .reset_reg = AO_RTI_GEN_CNTL_REG0, |
| .num_reset = ARRAY_SIZE(axg_aoclk_reset), |
| .reset = axg_aoclk_reset, |
| .num_clks = ARRAY_SIZE(axg_aoclk_regmap), |
| .clks = axg_aoclk_regmap, |
| .hw_clks = { |
| .hws = axg_aoclk_hw_clks, |
| .num = ARRAY_SIZE(axg_aoclk_hw_clks), |
| }, |
| }; |
| |
| static const struct of_device_id axg_aoclkc_match_table[] = { |
| { |
| .compatible = "amlogic,meson-axg-aoclkc", |
| .data = &axg_aoclkc_data, |
| }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, axg_aoclkc_match_table); |
| |
| static struct platform_driver axg_aoclkc_driver = { |
| .probe = meson_aoclkc_probe, |
| .driver = { |
| .name = "axg-aoclkc", |
| .of_match_table = axg_aoclkc_match_table, |
| }, |
| }; |
| module_platform_driver(axg_aoclkc_driver); |
| |
| MODULE_DESCRIPTION("Amlogic AXG Always-ON Clock Controller driver"); |
| MODULE_LICENSE("GPL"); |
