// SPDX-License-Identifier: GPL-2.0+
/*
* Amlogic Meson-AXG Clock Controller Driver
*
* Copyright (c) 2016 Baylibre SAS.
* Author: Michael Turquette <[email protected]>
*
* Copyright (c) 2018 Amlogic, inc.
* Author: Qiufang Dai <[email protected]>
*/
#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");
MODULE_IMPORT_NS(CLK_MESON);
Codebase Browser
linux