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-rw-r--r--drivers/clk/meson/g12a-aoclk.c478
1 files changed, 478 insertions, 0 deletions
diff --git a/drivers/clk/meson/g12a-aoclk.c b/drivers/clk/meson/g12a-aoclk.c
new file mode 100644
index 0000000000..c6b1d55cd7
--- /dev/null
+++ b/drivers/clk/meson/g12a-aoclk.c
@@ -0,0 +1,478 @@
+// 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) 2019 Baylibre SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.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/g12a-aoclkc.h>
+#include <dt-bindings/reset/g12a-aoclkc.h>
+
+/*
+ * AO Configuration Clock registers offsets
+ * Register offsets from the data sheet must be multiplied by 4.
+ */
+#define AO_RTI_STATUS_REG3 0x0C
+#define AO_RTI_PWR_CNTL_REG0 0x10
+#define AO_RTI_GEN_CNTL_REG0 0x40
+#define AO_CLK_GATE0 0x4c
+#define AO_CLK_GATE0_SP 0x50
+#define AO_OSCIN_CNTL 0x58
+#define AO_CEC_CLK_CNTL_REG0 0x74
+#define AO_CEC_CLK_CNTL_REG1 0x78
+#define AO_SAR_CLK 0x90
+#define AO_RTC_ALT_CLK_CNTL0 0x94
+#define AO_RTC_ALT_CLK_CNTL1 0x98
+
+/*
+ * Like every other peripheral clock gate in Amlogic Clock drivers,
+ * we are using CLK_IGNORE_UNUSED here, so we keep the state of the
+ * bootloader. The goal is to remove this flag at some point.
+ * Actually removing it will require some extensive test to be done safely.
+ */
+#define AXG_AO_GATE(_name, _reg, _bit) \
+static struct clk_regmap g12a_aoclk_##_name = { \
+ .data = &(struct clk_regmap_gate_data) { \
+ .offset = (_reg), \
+ .bit_idx = (_bit), \
+ }, \
+ .hw.init = &(struct clk_init_data) { \
+ .name = "g12a_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(ahb, AO_CLK_GATE0, 0);
+AXG_AO_GATE(ir_in, AO_CLK_GATE0, 1);
+AXG_AO_GATE(i2c_m0, AO_CLK_GATE0, 2);
+AXG_AO_GATE(i2c_s0, AO_CLK_GATE0, 3);
+AXG_AO_GATE(uart, AO_CLK_GATE0, 4);
+AXG_AO_GATE(prod_i2c, AO_CLK_GATE0, 5);
+AXG_AO_GATE(uart2, AO_CLK_GATE0, 6);
+AXG_AO_GATE(ir_out, AO_CLK_GATE0, 7);
+AXG_AO_GATE(saradc, AO_CLK_GATE0, 8);
+AXG_AO_GATE(mailbox, AO_CLK_GATE0_SP, 0);
+AXG_AO_GATE(m3, AO_CLK_GATE0_SP, 1);
+AXG_AO_GATE(ahb_sram, AO_CLK_GATE0_SP, 2);
+AXG_AO_GATE(rti, AO_CLK_GATE0_SP, 3);
+AXG_AO_GATE(m4_fclk, AO_CLK_GATE0_SP, 4);
+AXG_AO_GATE(m4_hclk, AO_CLK_GATE0_SP, 5);
+
+static struct clk_regmap g12a_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 const struct meson_clk_dualdiv_param g12a_32k_div_table[] = {
+ {
+ .dual = 1,
+ .n1 = 733,
+ .m1 = 8,
+ .n2 = 732,
+ .m2 = 11,
+ }, {}
+};
+
+/* 32k_by_oscin clock */
+
+static struct clk_regmap g12a_aoclk_32k_by_oscin_pre = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = AO_RTC_ALT_CLK_CNTL0,
+ .bit_idx = 31,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_32k_by_oscin_pre",
+ .ops = &clk_regmap_gate_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_cts_oscin.hw
+ },
+ .num_parents = 1,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_32k_by_oscin_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 = g12a_32k_div_table,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_32k_by_oscin_div",
+ .ops = &meson_clk_dualdiv_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_32k_by_oscin_pre.hw
+ },
+ .num_parents = 1,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_32k_by_oscin_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 = "g12a_ao_32k_by_oscin_sel",
+ .ops = &clk_regmap_mux_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_32k_by_oscin_div.hw,
+ &g12a_aoclk_32k_by_oscin_pre.hw,
+ },
+ .num_parents = 2,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_32k_by_oscin = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = AO_RTC_ALT_CLK_CNTL0,
+ .bit_idx = 30,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_32k_by_oscin",
+ .ops = &clk_regmap_gate_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_32k_by_oscin_sel.hw
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+/* cec clock */
+
+static struct clk_regmap g12a_aoclk_cec_pre = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = AO_CEC_CLK_CNTL_REG0,
+ .bit_idx = 31,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_cec_pre",
+ .ops = &clk_regmap_gate_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_cts_oscin.hw
+ },
+ .num_parents = 1,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_cec_div = {
+ .data = &(struct meson_clk_dualdiv_data){
+ .n1 = {
+ .reg_off = AO_CEC_CLK_CNTL_REG0,
+ .shift = 0,
+ .width = 12,
+ },
+ .n2 = {
+ .reg_off = AO_CEC_CLK_CNTL_REG0,
+ .shift = 12,
+ .width = 12,
+ },
+ .m1 = {
+ .reg_off = AO_CEC_CLK_CNTL_REG1,
+ .shift = 0,
+ .width = 12,
+ },
+ .m2 = {
+ .reg_off = AO_CEC_CLK_CNTL_REG1,
+ .shift = 12,
+ .width = 12,
+ },
+ .dual = {
+ .reg_off = AO_CEC_CLK_CNTL_REG0,
+ .shift = 28,
+ .width = 1,
+ },
+ .table = g12a_32k_div_table,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_cec_div",
+ .ops = &meson_clk_dualdiv_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_cec_pre.hw
+ },
+ .num_parents = 1,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_cec_sel = {
+ .data = &(struct clk_regmap_mux_data) {
+ .offset = AO_CEC_CLK_CNTL_REG1,
+ .mask = 0x1,
+ .shift = 24,
+ .flags = CLK_MUX_ROUND_CLOSEST,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_cec_sel",
+ .ops = &clk_regmap_mux_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_cec_div.hw,
+ &g12a_aoclk_cec_pre.hw,
+ },
+ .num_parents = 2,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_cec = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = AO_CEC_CLK_CNTL_REG0,
+ .bit_idx = 30,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_cec",
+ .ops = &clk_regmap_gate_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_cec_sel.hw
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap g12a_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 = "g12a_ao_cts_rtc_oscin",
+ .ops = &clk_regmap_mux_ops,
+ .parent_data = (const struct clk_parent_data []) {
+ { .hw = &g12a_aoclk_32k_by_oscin.hw },
+ { .fw_name = "ext-32k-0", },
+ },
+ .num_parents = 2,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap g12a_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 = "g12a_ao_clk81",
+ .ops = &clk_regmap_mux_ro_ops,
+ .parent_data = (const struct clk_parent_data []) {
+ { .fw_name = "mpeg-clk", },
+ { .hw = &g12a_aoclk_cts_rtc_oscin.hw },
+ },
+ .num_parents = 2,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_saradc_mux = {
+ .data = &(struct clk_regmap_mux_data) {
+ .offset = AO_SAR_CLK,
+ .mask = 0x3,
+ .shift = 9,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_saradc_mux",
+ .ops = &clk_regmap_mux_ops,
+ .parent_data = (const struct clk_parent_data []) {
+ { .fw_name = "xtal", },
+ { .hw = &g12a_aoclk_clk81.hw },
+ },
+ .num_parents = 2,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_saradc_div = {
+ .data = &(struct clk_regmap_div_data) {
+ .offset = AO_SAR_CLK,
+ .shift = 0,
+ .width = 8,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_saradc_div",
+ .ops = &clk_regmap_divider_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_saradc_mux.hw
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap g12a_aoclk_saradc_gate = {
+ .data = &(struct clk_regmap_gate_data) {
+ .offset = AO_SAR_CLK,
+ .bit_idx = 8,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "g12a_ao_saradc_gate",
+ .ops = &clk_regmap_gate_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &g12a_aoclk_saradc_div.hw
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static const unsigned int g12a_aoclk_reset[] = {
+ [RESET_AO_IR_IN] = 16,
+ [RESET_AO_UART] = 17,
+ [RESET_AO_I2C_M] = 18,
+ [RESET_AO_I2C_S] = 19,
+ [RESET_AO_SAR_ADC] = 20,
+ [RESET_AO_UART2] = 22,
+ [RESET_AO_IR_OUT] = 23,
+};
+
+static struct clk_regmap *g12a_aoclk_regmap[] = {
+ &g12a_aoclk_ahb,
+ &g12a_aoclk_ir_in,
+ &g12a_aoclk_i2c_m0,
+ &g12a_aoclk_i2c_s0,
+ &g12a_aoclk_uart,
+ &g12a_aoclk_prod_i2c,
+ &g12a_aoclk_uart2,
+ &g12a_aoclk_ir_out,
+ &g12a_aoclk_saradc,
+ &g12a_aoclk_mailbox,
+ &g12a_aoclk_m3,
+ &g12a_aoclk_ahb_sram,
+ &g12a_aoclk_rti,
+ &g12a_aoclk_m4_fclk,
+ &g12a_aoclk_m4_hclk,
+ &g12a_aoclk_cts_oscin,
+ &g12a_aoclk_32k_by_oscin_pre,
+ &g12a_aoclk_32k_by_oscin_div,
+ &g12a_aoclk_32k_by_oscin_sel,
+ &g12a_aoclk_32k_by_oscin,
+ &g12a_aoclk_cec_pre,
+ &g12a_aoclk_cec_div,
+ &g12a_aoclk_cec_sel,
+ &g12a_aoclk_cec,
+ &g12a_aoclk_cts_rtc_oscin,
+ &g12a_aoclk_clk81,
+ &g12a_aoclk_saradc_mux,
+ &g12a_aoclk_saradc_div,
+ &g12a_aoclk_saradc_gate,
+};
+
+static struct clk_hw *g12a_aoclk_hw_clks[] = {
+ [CLKID_AO_AHB] = &g12a_aoclk_ahb.hw,
+ [CLKID_AO_IR_IN] = &g12a_aoclk_ir_in.hw,
+ [CLKID_AO_I2C_M0] = &g12a_aoclk_i2c_m0.hw,
+ [CLKID_AO_I2C_S0] = &g12a_aoclk_i2c_s0.hw,
+ [CLKID_AO_UART] = &g12a_aoclk_uart.hw,
+ [CLKID_AO_PROD_I2C] = &g12a_aoclk_prod_i2c.hw,
+ [CLKID_AO_UART2] = &g12a_aoclk_uart2.hw,
+ [CLKID_AO_IR_OUT] = &g12a_aoclk_ir_out.hw,
+ [CLKID_AO_SAR_ADC] = &g12a_aoclk_saradc.hw,
+ [CLKID_AO_MAILBOX] = &g12a_aoclk_mailbox.hw,
+ [CLKID_AO_M3] = &g12a_aoclk_m3.hw,
+ [CLKID_AO_AHB_SRAM] = &g12a_aoclk_ahb_sram.hw,
+ [CLKID_AO_RTI] = &g12a_aoclk_rti.hw,
+ [CLKID_AO_M4_FCLK] = &g12a_aoclk_m4_fclk.hw,
+ [CLKID_AO_M4_HCLK] = &g12a_aoclk_m4_hclk.hw,
+ [CLKID_AO_CLK81] = &g12a_aoclk_clk81.hw,
+ [CLKID_AO_SAR_ADC_SEL] = &g12a_aoclk_saradc_mux.hw,
+ [CLKID_AO_SAR_ADC_DIV] = &g12a_aoclk_saradc_div.hw,
+ [CLKID_AO_SAR_ADC_CLK] = &g12a_aoclk_saradc_gate.hw,
+ [CLKID_AO_CTS_OSCIN] = &g12a_aoclk_cts_oscin.hw,
+ [CLKID_AO_32K_PRE] = &g12a_aoclk_32k_by_oscin_pre.hw,
+ [CLKID_AO_32K_DIV] = &g12a_aoclk_32k_by_oscin_div.hw,
+ [CLKID_AO_32K_SEL] = &g12a_aoclk_32k_by_oscin_sel.hw,
+ [CLKID_AO_32K] = &g12a_aoclk_32k_by_oscin.hw,
+ [CLKID_AO_CEC_PRE] = &g12a_aoclk_cec_pre.hw,
+ [CLKID_AO_CEC_DIV] = &g12a_aoclk_cec_div.hw,
+ [CLKID_AO_CEC_SEL] = &g12a_aoclk_cec_sel.hw,
+ [CLKID_AO_CEC] = &g12a_aoclk_cec.hw,
+ [CLKID_AO_CTS_RTC_OSCIN] = &g12a_aoclk_cts_rtc_oscin.hw,
+};
+
+static const struct meson_aoclk_data g12a_aoclkc_data = {
+ .reset_reg = AO_RTI_GEN_CNTL_REG0,
+ .num_reset = ARRAY_SIZE(g12a_aoclk_reset),
+ .reset = g12a_aoclk_reset,
+ .num_clks = ARRAY_SIZE(g12a_aoclk_regmap),
+ .clks = g12a_aoclk_regmap,
+ .hw_clks = {
+ .hws = g12a_aoclk_hw_clks,
+ .num = ARRAY_SIZE(g12a_aoclk_hw_clks),
+ },
+};
+
+static const struct of_device_id g12a_aoclkc_match_table[] = {
+ {
+ .compatible = "amlogic,meson-g12a-aoclkc",
+ .data = &g12a_aoclkc_data,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, g12a_aoclkc_match_table);
+
+static struct platform_driver g12a_aoclkc_driver = {
+ .probe = meson_aoclkc_probe,
+ .driver = {
+ .name = "g12a-aoclkc",
+ .of_match_table = g12a_aoclkc_match_table,
+ },
+};
+
+module_platform_driver(g12a_aoclkc_driver);
+MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-12 21:23:40 +0000