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[mirror_ubuntu-kernels.git] / drivers / clk / meson / axg-aoclk.c
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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Amlogic Meson-AXG Clock Controller Driver
4 *
5 * Copyright (c) 2016 Baylibre SAS.
6 * Author: Michael Turquette <mturquette@baylibre.com>
7 *
8 * Copyright (c) 2018 Amlogic, inc.
9 * Author: Qiufang Dai <qiufang.dai@amlogic.com>
10 */
11#include <linux/clk-provider.h>
12#include <linux/platform_device.h>
13#include <linux/reset-controller.h>
14#include <linux/mfd/syscon.h>
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15#include "meson-aoclk.h"
16#include "axg-aoclk.h"
17
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18#include "clk-regmap.h"
19#include "clk-dualdiv.h"
20
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21#define IN_PREFIX "ao-in-"
22
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23/*
24 * AO Configuration Clock registers offsets
25 * Register offsets from the data sheet must be multiplied by 4.
26 */
27#define AO_RTI_PWR_CNTL_REG1 0x0C
28#define AO_RTI_PWR_CNTL_REG0 0x10
29#define AO_RTI_GEN_CNTL_REG0 0x40
30#define AO_OSCIN_CNTL 0x58
31#define AO_CRT_CLK_CNTL1 0x68
32#define AO_SAR_CLK 0x90
33#define AO_RTC_ALT_CLK_CNTL0 0x94
34#define AO_RTC_ALT_CLK_CNTL1 0x98
35
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36#define AXG_AO_GATE(_name, _bit) \
37static struct clk_regmap axg_aoclk_##_name = { \
38 .data = &(struct clk_regmap_gate_data) { \
39 .offset = (AO_RTI_GEN_CNTL_REG0), \
40 .bit_idx = (_bit), \
41 }, \
42 .hw.init = &(struct clk_init_data) { \
43 .name = "axg_ao_" #_name, \
44 .ops = &clk_regmap_gate_ops, \
439a6bb5 45 .parent_names = (const char *[]){ IN_PREFIX "mpeg-clk" }, \
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46 .num_parents = 1, \
47 .flags = CLK_IGNORE_UNUSED, \
48 }, \
49}
50
51AXG_AO_GATE(remote, 0);
52AXG_AO_GATE(i2c_master, 1);
53AXG_AO_GATE(i2c_slave, 2);
54AXG_AO_GATE(uart1, 3);
55AXG_AO_GATE(uart2, 5);
56AXG_AO_GATE(ir_blaster, 6);
57AXG_AO_GATE(saradc, 7);
58
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59static struct clk_regmap axg_aoclk_cts_oscin = {
60 .data = &(struct clk_regmap_gate_data){
61 .offset = AO_RTI_PWR_CNTL_REG0,
62 .bit_idx = 14,
63 },
64 .hw.init = &(struct clk_init_data){
65 .name = "cts_oscin",
66 .ops = &clk_regmap_gate_ro_ops,
439a6bb5 67 .parent_names = (const char *[]){ IN_PREFIX "xtal" },
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68 .num_parents = 1,
69 },
70};
71
72static struct clk_regmap axg_aoclk_32k_pre = {
73 .data = &(struct clk_regmap_gate_data){
74 .offset = AO_RTC_ALT_CLK_CNTL0,
75 .bit_idx = 31,
76 },
77 .hw.init = &(struct clk_init_data){
78 .name = "axg_ao_32k_pre",
79 .ops = &clk_regmap_gate_ops,
80 .parent_names = (const char *[]){ "cts_oscin" },
81 .num_parents = 1,
82 },
83};
84
85static const struct meson_clk_dualdiv_param axg_32k_div_table[] = {
86 {
87 .dual = 1,
88 .n1 = 733,
89 .m1 = 8,
90 .n2 = 732,
91 .m2 = 11,
92 }, {}
93};
94
95static struct clk_regmap axg_aoclk_32k_div = {
96 .data = &(struct meson_clk_dualdiv_data){
97 .n1 = {
98 .reg_off = AO_RTC_ALT_CLK_CNTL0,
99 .shift = 0,
100 .width = 12,
101 },
102 .n2 = {
103 .reg_off = AO_RTC_ALT_CLK_CNTL0,
104 .shift = 12,
105 .width = 12,
106 },
107 .m1 = {
108 .reg_off = AO_RTC_ALT_CLK_CNTL1,
109 .shift = 0,
110 .width = 12,
111 },
112 .m2 = {
113 .reg_off = AO_RTC_ALT_CLK_CNTL1,
114 .shift = 12,
115 .width = 12,
116 },
117 .dual = {
118 .reg_off = AO_RTC_ALT_CLK_CNTL0,
119 .shift = 28,
120 .width = 1,
121 },
122 .table = axg_32k_div_table,
123 },
124 .hw.init = &(struct clk_init_data){
125 .name = "axg_ao_32k_div",
126 .ops = &meson_clk_dualdiv_ops,
127 .parent_names = (const char *[]){ "axg_ao_32k_pre" },
128 .num_parents = 1,
129 },
130};
131
132static struct clk_regmap axg_aoclk_32k_sel = {
133 .data = &(struct clk_regmap_mux_data) {
134 .offset = AO_RTC_ALT_CLK_CNTL1,
135 .mask = 0x1,
136 .shift = 24,
137 .flags = CLK_MUX_ROUND_CLOSEST,
138 },
139 .hw.init = &(struct clk_init_data){
140 .name = "axg_ao_32k_sel",
141 .ops = &clk_regmap_mux_ops,
142 .parent_names = (const char *[]){ "axg_ao_32k_div",
143 "axg_ao_32k_pre" },
144 .num_parents = 2,
145 .flags = CLK_SET_RATE_PARENT,
146 },
147};
148
149static struct clk_regmap axg_aoclk_32k = {
150 .data = &(struct clk_regmap_gate_data){
151 .offset = AO_RTC_ALT_CLK_CNTL0,
152 .bit_idx = 30,
153 },
154 .hw.init = &(struct clk_init_data){
155 .name = "axg_ao_32k",
156 .ops = &clk_regmap_gate_ops,
157 .parent_names = (const char *[]){ "axg_ao_32k_sel" },
158 .num_parents = 1,
159 .flags = CLK_SET_RATE_PARENT,
160 },
161};
162
163static struct clk_regmap axg_aoclk_cts_rtc_oscin = {
164 .data = &(struct clk_regmap_mux_data) {
165 .offset = AO_RTI_PWR_CNTL_REG0,
166 .mask = 0x1,
167 .shift = 10,
168 .flags = CLK_MUX_ROUND_CLOSEST,
169 },
170 .hw.init = &(struct clk_init_data){
171 .name = "axg_ao_cts_rtc_oscin",
172 .ops = &clk_regmap_mux_ops,
173 .parent_names = (const char *[]){ "axg_ao_32k",
439a6bb5 174 IN_PREFIX "ext_32k-0" },
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175 .num_parents = 2,
176 .flags = CLK_SET_RATE_PARENT,
177 },
178};
179
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180static struct clk_regmap axg_aoclk_clk81 = {
181 .data = &(struct clk_regmap_mux_data) {
182 .offset = AO_RTI_PWR_CNTL_REG0,
183 .mask = 0x1,
184 .shift = 8,
172e9534 185 .flags = CLK_MUX_ROUND_CLOSEST,
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186 },
187 .hw.init = &(struct clk_init_data){
188 .name = "axg_ao_clk81",
189 .ops = &clk_regmap_mux_ro_ops,
439a6bb5 190 .parent_names = (const char *[]){ IN_PREFIX "mpeg-clk",
172e9534 191 "axg_ao_cts_rtc_oscin"},
6693e219 192 .num_parents = 2,
172e9534 193 .flags = CLK_SET_RATE_PARENT,
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194 },
195};
196
197static struct clk_regmap axg_aoclk_saradc_mux = {
198 .data = &(struct clk_regmap_mux_data) {
199 .offset = AO_SAR_CLK,
200 .mask = 0x3,
201 .shift = 9,
202 },
203 .hw.init = &(struct clk_init_data){
204 .name = "axg_ao_saradc_mux",
205 .ops = &clk_regmap_mux_ops,
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206 .parent_names = (const char *[]){ IN_PREFIX "xtal",
207 "axg_ao_clk81" },
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208 .num_parents = 2,
209 },
210};
211
212static struct clk_regmap axg_aoclk_saradc_div = {
213 .data = &(struct clk_regmap_div_data) {
214 .offset = AO_SAR_CLK,
215 .shift = 0,
216 .width = 8,
217 },
218 .hw.init = &(struct clk_init_data){
219 .name = "axg_ao_saradc_div",
220 .ops = &clk_regmap_divider_ops,
221 .parent_names = (const char *[]){ "axg_ao_saradc_mux" },
222 .num_parents = 1,
223 .flags = CLK_SET_RATE_PARENT,
224 },
225};
226
227static struct clk_regmap axg_aoclk_saradc_gate = {
228 .data = &(struct clk_regmap_gate_data) {
229 .offset = AO_SAR_CLK,
230 .bit_idx = 8,
231 },
232 .hw.init = &(struct clk_init_data){
233 .name = "axg_ao_saradc_gate",
234 .ops = &clk_regmap_gate_ops,
235 .parent_names = (const char *[]){ "axg_ao_saradc_div" },
236 .num_parents = 1,
237 .flags = CLK_SET_RATE_PARENT,
238 },
239};
240
241static const unsigned int axg_aoclk_reset[] = {
242 [RESET_AO_REMOTE] = 16,
243 [RESET_AO_I2C_MASTER] = 18,
244 [RESET_AO_I2C_SLAVE] = 19,
245 [RESET_AO_UART1] = 17,
246 [RESET_AO_UART2] = 22,
247 [RESET_AO_IR_BLASTER] = 23,
248};
249
250static struct clk_regmap *axg_aoclk_regmap[] = {
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251 &axg_aoclk_remote,
252 &axg_aoclk_i2c_master,
253 &axg_aoclk_i2c_slave,
254 &axg_aoclk_uart1,
255 &axg_aoclk_uart2,
256 &axg_aoclk_ir_blaster,
257 &axg_aoclk_saradc,
258 &axg_aoclk_cts_oscin,
259 &axg_aoclk_32k_pre,
260 &axg_aoclk_32k_div,
261 &axg_aoclk_32k_sel,
262 &axg_aoclk_32k,
263 &axg_aoclk_cts_rtc_oscin,
264 &axg_aoclk_clk81,
265 &axg_aoclk_saradc_mux,
266 &axg_aoclk_saradc_div,
267 &axg_aoclk_saradc_gate,
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268};
269
270static const struct clk_hw_onecell_data axg_aoclk_onecell_data = {
271 .hws = {
272 [CLKID_AO_REMOTE] = &axg_aoclk_remote.hw,
273 [CLKID_AO_I2C_MASTER] = &axg_aoclk_i2c_master.hw,
274 [CLKID_AO_I2C_SLAVE] = &axg_aoclk_i2c_slave.hw,
275 [CLKID_AO_UART1] = &axg_aoclk_uart1.hw,
276 [CLKID_AO_UART2] = &axg_aoclk_uart2.hw,
277 [CLKID_AO_IR_BLASTER] = &axg_aoclk_ir_blaster.hw,
278 [CLKID_AO_SAR_ADC] = &axg_aoclk_saradc.hw,
279 [CLKID_AO_CLK81] = &axg_aoclk_clk81.hw,
280 [CLKID_AO_SAR_ADC_SEL] = &axg_aoclk_saradc_mux.hw,
281 [CLKID_AO_SAR_ADC_DIV] = &axg_aoclk_saradc_div.hw,
282 [CLKID_AO_SAR_ADC_CLK] = &axg_aoclk_saradc_gate.hw,
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283 [CLKID_AO_CTS_OSCIN] = &axg_aoclk_cts_oscin.hw,
284 [CLKID_AO_32K_PRE] = &axg_aoclk_32k_pre.hw,
285 [CLKID_AO_32K_DIV] = &axg_aoclk_32k_div.hw,
286 [CLKID_AO_32K_SEL] = &axg_aoclk_32k_sel.hw,
287 [CLKID_AO_32K] = &axg_aoclk_32k.hw,
288 [CLKID_AO_CTS_RTC_OSCIN] = &axg_aoclk_cts_rtc_oscin.hw,
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289 },
290 .num = NR_CLKS,
291};
292
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293static const struct meson_aoclk_input axg_aoclk_inputs[] = {
294 { .name = "xtal", .required = true },
295 { .name = "mpeg-clk", .required = true },
296 { .name = "ext-32k-0", .required = false },
297};
298
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299static const struct meson_aoclk_data axg_aoclkc_data = {
300 .reset_reg = AO_RTI_GEN_CNTL_REG0,
301 .num_reset = ARRAY_SIZE(axg_aoclk_reset),
302 .reset = axg_aoclk_reset,
303 .num_clks = ARRAY_SIZE(axg_aoclk_regmap),
304 .clks = axg_aoclk_regmap,
305 .hw_data = &axg_aoclk_onecell_data,
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306 .inputs = axg_aoclk_inputs,
307 .num_inputs = ARRAY_SIZE(axg_aoclk_inputs),
308 .input_prefix = IN_PREFIX,
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309};
310
311static const struct of_device_id axg_aoclkc_match_table[] = {
312 {
313 .compatible = "amlogic,meson-axg-aoclkc",
314 .data = &axg_aoclkc_data,
315 },
316 { }
317};
318
319static struct platform_driver axg_aoclkc_driver = {
320 .probe = meson_aoclkc_probe,
321 .driver = {
322 .name = "axg-aoclkc",
323 .of_match_table = axg_aoclkc_match_table,
324 },
325};
326
327builtin_platform_driver(axg_aoclkc_driver);