328 lines
8.1 KiB
C
328 lines
8.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Amlogic Meson-AXG Clock Controller Driver
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*
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* Copyright (c) 2016 Baylibre SAS.
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* Author: Michael Turquette <mturquette@baylibre.com>
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*
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* Copyright (c) 2018 Amlogic, inc.
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* Author: Qiufang Dai <qiufang.dai@amlogic.com>
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*/
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#include <linux/clk-provider.h>
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#include <linux/platform_device.h>
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#include <linux/reset-controller.h>
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#include <linux/mfd/syscon.h>
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#include "meson-aoclk.h"
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#include "axg-aoclk.h"
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#include "clk-regmap.h"
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#include "clk-dualdiv.h"
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#define IN_PREFIX "ao-in-"
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/*
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* AO Configuration Clock registers offsets
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* Register offsets from the data sheet must be multiplied by 4.
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*/
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#define AO_RTI_PWR_CNTL_REG1 0x0C
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#define AO_RTI_PWR_CNTL_REG0 0x10
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#define AO_RTI_GEN_CNTL_REG0 0x40
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#define AO_OSCIN_CNTL 0x58
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#define AO_CRT_CLK_CNTL1 0x68
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#define AO_SAR_CLK 0x90
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#define AO_RTC_ALT_CLK_CNTL0 0x94
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#define AO_RTC_ALT_CLK_CNTL1 0x98
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#define AXG_AO_GATE(_name, _bit) \
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static struct clk_regmap axg_aoclk_##_name = { \
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.data = &(struct clk_regmap_gate_data) { \
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.offset = (AO_RTI_GEN_CNTL_REG0), \
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.bit_idx = (_bit), \
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}, \
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.hw.init = &(struct clk_init_data) { \
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.name = "axg_ao_" #_name, \
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.ops = &clk_regmap_gate_ops, \
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.parent_names = (const char *[]){ IN_PREFIX "mpeg-clk" }, \
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.num_parents = 1, \
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.flags = CLK_IGNORE_UNUSED, \
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}, \
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}
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AXG_AO_GATE(remote, 0);
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AXG_AO_GATE(i2c_master, 1);
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AXG_AO_GATE(i2c_slave, 2);
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AXG_AO_GATE(uart1, 3);
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AXG_AO_GATE(uart2, 5);
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AXG_AO_GATE(ir_blaster, 6);
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AXG_AO_GATE(saradc, 7);
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static struct clk_regmap axg_aoclk_cts_oscin = {
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.data = &(struct clk_regmap_gate_data){
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.offset = AO_RTI_PWR_CNTL_REG0,
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.bit_idx = 14,
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},
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.hw.init = &(struct clk_init_data){
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.name = "cts_oscin",
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.ops = &clk_regmap_gate_ro_ops,
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.parent_names = (const char *[]){ IN_PREFIX "xtal" },
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.num_parents = 1,
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},
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};
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static struct clk_regmap axg_aoclk_32k_pre = {
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.data = &(struct clk_regmap_gate_data){
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.offset = AO_RTC_ALT_CLK_CNTL0,
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.bit_idx = 31,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_32k_pre",
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.ops = &clk_regmap_gate_ops,
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.parent_names = (const char *[]){ "cts_oscin" },
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.num_parents = 1,
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},
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};
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static const struct meson_clk_dualdiv_param axg_32k_div_table[] = {
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{
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.dual = 1,
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.n1 = 733,
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.m1 = 8,
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.n2 = 732,
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.m2 = 11,
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}, {}
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};
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static struct clk_regmap axg_aoclk_32k_div = {
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.data = &(struct meson_clk_dualdiv_data){
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.n1 = {
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.reg_off = AO_RTC_ALT_CLK_CNTL0,
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.shift = 0,
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.width = 12,
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},
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.n2 = {
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.reg_off = AO_RTC_ALT_CLK_CNTL0,
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.shift = 12,
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.width = 12,
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},
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.m1 = {
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.reg_off = AO_RTC_ALT_CLK_CNTL1,
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.shift = 0,
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.width = 12,
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},
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.m2 = {
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.reg_off = AO_RTC_ALT_CLK_CNTL1,
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.shift = 12,
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.width = 12,
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},
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.dual = {
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.reg_off = AO_RTC_ALT_CLK_CNTL0,
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.shift = 28,
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.width = 1,
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},
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.table = axg_32k_div_table,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_32k_div",
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.ops = &meson_clk_dualdiv_ops,
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.parent_names = (const char *[]){ "axg_ao_32k_pre" },
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.num_parents = 1,
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},
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};
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static struct clk_regmap axg_aoclk_32k_sel = {
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.data = &(struct clk_regmap_mux_data) {
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.offset = AO_RTC_ALT_CLK_CNTL1,
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.mask = 0x1,
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.shift = 24,
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.flags = CLK_MUX_ROUND_CLOSEST,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_32k_sel",
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.ops = &clk_regmap_mux_ops,
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.parent_names = (const char *[]){ "axg_ao_32k_div",
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"axg_ao_32k_pre" },
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.num_parents = 2,
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.flags = CLK_SET_RATE_PARENT,
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},
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};
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static struct clk_regmap axg_aoclk_32k = {
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.data = &(struct clk_regmap_gate_data){
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.offset = AO_RTC_ALT_CLK_CNTL0,
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.bit_idx = 30,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_32k",
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.ops = &clk_regmap_gate_ops,
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.parent_names = (const char *[]){ "axg_ao_32k_sel" },
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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},
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};
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static struct clk_regmap axg_aoclk_cts_rtc_oscin = {
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.data = &(struct clk_regmap_mux_data) {
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.offset = AO_RTI_PWR_CNTL_REG0,
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.mask = 0x1,
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.shift = 10,
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.flags = CLK_MUX_ROUND_CLOSEST,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_cts_rtc_oscin",
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.ops = &clk_regmap_mux_ops,
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.parent_names = (const char *[]){ "axg_ao_32k",
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IN_PREFIX "ext_32k-0" },
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.num_parents = 2,
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.flags = CLK_SET_RATE_PARENT,
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},
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};
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static struct clk_regmap axg_aoclk_clk81 = {
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.data = &(struct clk_regmap_mux_data) {
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.offset = AO_RTI_PWR_CNTL_REG0,
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.mask = 0x1,
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.shift = 8,
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.flags = CLK_MUX_ROUND_CLOSEST,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_clk81",
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.ops = &clk_regmap_mux_ro_ops,
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.parent_names = (const char *[]){ IN_PREFIX "mpeg-clk",
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"axg_ao_cts_rtc_oscin"},
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.num_parents = 2,
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.flags = CLK_SET_RATE_PARENT,
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},
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};
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static struct clk_regmap axg_aoclk_saradc_mux = {
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.data = &(struct clk_regmap_mux_data) {
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.offset = AO_SAR_CLK,
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.mask = 0x3,
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.shift = 9,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_saradc_mux",
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.ops = &clk_regmap_mux_ops,
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.parent_names = (const char *[]){ IN_PREFIX "xtal",
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"axg_ao_clk81" },
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.num_parents = 2,
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},
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};
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static struct clk_regmap axg_aoclk_saradc_div = {
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.data = &(struct clk_regmap_div_data) {
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.offset = AO_SAR_CLK,
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.shift = 0,
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.width = 8,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_saradc_div",
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.ops = &clk_regmap_divider_ops,
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.parent_names = (const char *[]){ "axg_ao_saradc_mux" },
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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},
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};
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static struct clk_regmap axg_aoclk_saradc_gate = {
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.data = &(struct clk_regmap_gate_data) {
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.offset = AO_SAR_CLK,
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.bit_idx = 8,
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},
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.hw.init = &(struct clk_init_data){
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.name = "axg_ao_saradc_gate",
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.ops = &clk_regmap_gate_ops,
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.parent_names = (const char *[]){ "axg_ao_saradc_div" },
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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},
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};
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static const unsigned int axg_aoclk_reset[] = {
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[RESET_AO_REMOTE] = 16,
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[RESET_AO_I2C_MASTER] = 18,
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[RESET_AO_I2C_SLAVE] = 19,
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[RESET_AO_UART1] = 17,
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[RESET_AO_UART2] = 22,
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[RESET_AO_IR_BLASTER] = 23,
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};
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static struct clk_regmap *axg_aoclk_regmap[] = {
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&axg_aoclk_remote,
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&axg_aoclk_i2c_master,
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&axg_aoclk_i2c_slave,
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&axg_aoclk_uart1,
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&axg_aoclk_uart2,
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&axg_aoclk_ir_blaster,
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&axg_aoclk_saradc,
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&axg_aoclk_cts_oscin,
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&axg_aoclk_32k_pre,
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&axg_aoclk_32k_div,
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&axg_aoclk_32k_sel,
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&axg_aoclk_32k,
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&axg_aoclk_cts_rtc_oscin,
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&axg_aoclk_clk81,
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&axg_aoclk_saradc_mux,
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&axg_aoclk_saradc_div,
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&axg_aoclk_saradc_gate,
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};
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static const struct clk_hw_onecell_data axg_aoclk_onecell_data = {
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.hws = {
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[CLKID_AO_REMOTE] = &axg_aoclk_remote.hw,
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[CLKID_AO_I2C_MASTER] = &axg_aoclk_i2c_master.hw,
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[CLKID_AO_I2C_SLAVE] = &axg_aoclk_i2c_slave.hw,
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[CLKID_AO_UART1] = &axg_aoclk_uart1.hw,
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[CLKID_AO_UART2] = &axg_aoclk_uart2.hw,
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[CLKID_AO_IR_BLASTER] = &axg_aoclk_ir_blaster.hw,
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[CLKID_AO_SAR_ADC] = &axg_aoclk_saradc.hw,
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[CLKID_AO_CLK81] = &axg_aoclk_clk81.hw,
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[CLKID_AO_SAR_ADC_SEL] = &axg_aoclk_saradc_mux.hw,
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[CLKID_AO_SAR_ADC_DIV] = &axg_aoclk_saradc_div.hw,
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[CLKID_AO_SAR_ADC_CLK] = &axg_aoclk_saradc_gate.hw,
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[CLKID_AO_CTS_OSCIN] = &axg_aoclk_cts_oscin.hw,
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[CLKID_AO_32K_PRE] = &axg_aoclk_32k_pre.hw,
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[CLKID_AO_32K_DIV] = &axg_aoclk_32k_div.hw,
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[CLKID_AO_32K_SEL] = &axg_aoclk_32k_sel.hw,
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[CLKID_AO_32K] = &axg_aoclk_32k.hw,
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[CLKID_AO_CTS_RTC_OSCIN] = &axg_aoclk_cts_rtc_oscin.hw,
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},
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.num = NR_CLKS,
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};
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static const struct meson_aoclk_input axg_aoclk_inputs[] = {
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{ .name = "xtal", .required = true },
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{ .name = "mpeg-clk", .required = true },
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{ .name = "ext-32k-0", .required = false },
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};
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static const struct meson_aoclk_data axg_aoclkc_data = {
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.reset_reg = AO_RTI_GEN_CNTL_REG0,
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.num_reset = ARRAY_SIZE(axg_aoclk_reset),
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.reset = axg_aoclk_reset,
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.num_clks = ARRAY_SIZE(axg_aoclk_regmap),
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.clks = axg_aoclk_regmap,
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.hw_data = &axg_aoclk_onecell_data,
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.inputs = axg_aoclk_inputs,
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.num_inputs = ARRAY_SIZE(axg_aoclk_inputs),
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.input_prefix = IN_PREFIX,
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};
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static const struct of_device_id axg_aoclkc_match_table[] = {
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{
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.compatible = "amlogic,meson-axg-aoclkc",
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.data = &axg_aoclkc_data,
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},
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{ }
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};
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static struct platform_driver axg_aoclkc_driver = {
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.probe = meson_aoclkc_probe,
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.driver = {
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.name = "axg-aoclkc",
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.of_match_table = axg_aoclkc_match_table,
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},
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};
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builtin_platform_driver(axg_aoclkc_driver);
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