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[mirror_ubuntu-jammy-kernel.git] / drivers / clk / at91 / at91sam9x5.c
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1// SPDX-License-Identifier: GPL-2.0
2#include <linux/clk-provider.h>
3#include <linux/mfd/syscon.h>
4#include <linux/slab.h>
5
6#include <dt-bindings/clock/at91.h>
7
8#include "pmc.h"
9
10static const struct clk_master_characteristics mck_characteristics = {
11 .output = { .min = 0, .max = 133333333 },
12 .divisors = { 1, 2, 4, 3 },
13 .have_div3_pres = 1,
14};
15
16static u8 plla_out[] = { 0, 1, 2, 3, 0, 1, 2, 3 };
17
18static u16 plla_icpll[] = { 0, 0, 0, 0, 1, 1, 1, 1 };
19
7b4c162e 20static const struct clk_range plla_outputs[] = {
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21 { .min = 745000000, .max = 800000000 },
22 { .min = 695000000, .max = 750000000 },
23 { .min = 645000000, .max = 700000000 },
24 { .min = 595000000, .max = 650000000 },
25 { .min = 545000000, .max = 600000000 },
26 { .min = 495000000, .max = 555000000 },
27 { .min = 445000000, .max = 500000000 },
28 { .min = 400000000, .max = 450000000 },
29};
30
31static const struct clk_pll_characteristics plla_characteristics = {
32 .input = { .min = 2000000, .max = 32000000 },
33 .num_output = ARRAY_SIZE(plla_outputs),
34 .output = plla_outputs,
35 .icpll = plla_icpll,
36 .out = plla_out,
37};
38
39static const struct {
40 char *n;
41 char *p;
42 u8 id;
43} at91sam9x5_systemck[] = {
44 { .n = "ddrck", .p = "masterck", .id = 2 },
45 { .n = "smdck", .p = "smdclk", .id = 4 },
46 { .n = "uhpck", .p = "usbck", .id = 6 },
47 { .n = "udpck", .p = "usbck", .id = 7 },
48 { .n = "pck0", .p = "prog0", .id = 8 },
49 { .n = "pck1", .p = "prog1", .id = 9 },
50};
51
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52static const struct clk_pcr_layout at91sam9x5_pcr_layout = {
53 .offset = 0x10c,
54 .cmd = BIT(12),
55 .pid_mask = GENMASK(5, 0),
56 .div_mask = GENMASK(17, 16),
57};
58
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59struct pck {
60 char *n;
61 u8 id;
62};
63
64static const struct pck at91sam9x5_periphck[] = {
65 { .n = "pioAB_clk", .id = 2, },
66 { .n = "pioCD_clk", .id = 3, },
67 { .n = "smd_clk", .id = 4, },
68 { .n = "usart0_clk", .id = 5, },
69 { .n = "usart1_clk", .id = 6, },
70 { .n = "usart2_clk", .id = 7, },
71 { .n = "twi0_clk", .id = 9, },
72 { .n = "twi1_clk", .id = 10, },
73 { .n = "twi2_clk", .id = 11, },
74 { .n = "mci0_clk", .id = 12, },
75 { .n = "spi0_clk", .id = 13, },
76 { .n = "spi1_clk", .id = 14, },
77 { .n = "uart0_clk", .id = 15, },
78 { .n = "uart1_clk", .id = 16, },
79 { .n = "tcb0_clk", .id = 17, },
80 { .n = "pwm_clk", .id = 18, },
81 { .n = "adc_clk", .id = 19, },
82 { .n = "dma0_clk", .id = 20, },
83 { .n = "dma1_clk", .id = 21, },
84 { .n = "uhphs_clk", .id = 22, },
85 { .n = "udphs_clk", .id = 23, },
86 { .n = "mci1_clk", .id = 26, },
87 { .n = "ssc0_clk", .id = 28, },
88};
89
90static const struct pck at91sam9g15_periphck[] = {
91 { .n = "lcdc_clk", .id = 25, },
92 { /* sentinel */}
93};
94
95static const struct pck at91sam9g25_periphck[] = {
96 { .n = "usart3_clk", .id = 8, },
97 { .n = "macb0_clk", .id = 24, },
98 { .n = "isi_clk", .id = 25, },
99 { /* sentinel */}
100};
101
102static const struct pck at91sam9g35_periphck[] = {
103 { .n = "macb0_clk", .id = 24, },
104 { .n = "lcdc_clk", .id = 25, },
105 { /* sentinel */}
106};
107
108static const struct pck at91sam9x25_periphck[] = {
109 { .n = "usart3_clk", .id = 8, },
110 { .n = "macb0_clk", .id = 24, },
111 { .n = "macb1_clk", .id = 27, },
112 { .n = "can0_clk", .id = 29, },
113 { .n = "can1_clk", .id = 30, },
114 { /* sentinel */}
115};
116
117static const struct pck at91sam9x35_periphck[] = {
118 { .n = "macb0_clk", .id = 24, },
119 { .n = "lcdc_clk", .id = 25, },
120 { .n = "can0_clk", .id = 29, },
121 { .n = "can1_clk", .id = 30, },
122 { /* sentinel */}
123};
124
125static void __init at91sam9x5_pmc_setup(struct device_node *np,
126 const struct pck *extra_pcks,
127 bool has_lcdck)
128{
129 struct clk_range range = CLK_RANGE(0, 0);
130 const char *slck_name, *mainxtal_name;
131 struct pmc_data *at91sam9x5_pmc;
132 const char *parent_names[6];
133 struct regmap *regmap;
134 struct clk_hw *hw;
135 int i;
136 bool bypass;
137
138 i = of_property_match_string(np, "clock-names", "slow_clk");
139 if (i < 0)
140 return;
141
142 slck_name = of_clk_get_parent_name(np, i);
143
144 i = of_property_match_string(np, "clock-names", "main_xtal");
145 if (i < 0)
146 return;
147 mainxtal_name = of_clk_get_parent_name(np, i);
148
6956eb33 149 regmap = device_node_to_regmap(np);
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150 if (IS_ERR(regmap))
151 return;
152
03a1ee1d 153 at91sam9x5_pmc = pmc_data_allocate(PMC_PLLACK + 1,
99767cd4 154 nck(at91sam9x5_systemck), 31, 0, 2);
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155 if (!at91sam9x5_pmc)
156 return;
157
158 hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
159 50000000);
160 if (IS_ERR(hw))
161 goto err_free;
162
163 bypass = of_property_read_bool(np, "atmel,osc-bypass");
164
165 hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
166 bypass);
167 if (IS_ERR(hw))
168 goto err_free;
169
170 parent_names[0] = "main_rc_osc";
171 parent_names[1] = "main_osc";
172 hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
173 if (IS_ERR(hw))
174 goto err_free;
175
176 at91sam9x5_pmc->chws[PMC_MAIN] = hw;
177
178 hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
179 &at91rm9200_pll_layout, &plla_characteristics);
180 if (IS_ERR(hw))
181 goto err_free;
182
183 hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
184 if (IS_ERR(hw))
185 goto err_free;
186
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187 at91sam9x5_pmc->chws[PMC_PLLACK] = hw;
188
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189 hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck");
190 if (IS_ERR(hw))
191 goto err_free;
192
193 at91sam9x5_pmc->chws[PMC_UTMI] = hw;
194
195 parent_names[0] = slck_name;
196 parent_names[1] = "mainck";
197 parent_names[2] = "plladivck";
198 parent_names[3] = "utmick";
199 hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
200 &at91sam9x5_master_layout,
201 &mck_characteristics);
202 if (IS_ERR(hw))
203 goto err_free;
204
205 at91sam9x5_pmc->chws[PMC_MCK] = hw;
206
207 parent_names[0] = "plladivck";
208 parent_names[1] = "utmick";
209 hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
210 if (IS_ERR(hw))
211 goto err_free;
212
213 hw = at91sam9x5_clk_register_smd(regmap, "smdclk", parent_names, 2);
214 if (IS_ERR(hw))
215 goto err_free;
216
217 parent_names[0] = slck_name;
218 parent_names[1] = "mainck";
219 parent_names[2] = "plladivck";
220 parent_names[3] = "utmick";
65a91e2e 221 parent_names[4] = "masterck";
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222 for (i = 0; i < 2; i++) {
223 char name[6];
224
225 snprintf(name, sizeof(name), "prog%d", i);
226
227 hw = at91_clk_register_programmable(regmap, name,
228 parent_names, 5, i,
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229 &at91sam9x5_programmable_layout,
230 NULL);
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231 if (IS_ERR(hw))
232 goto err_free;
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233
234 at91sam9x5_pmc->pchws[i] = hw;
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235 }
236
237 for (i = 0; i < ARRAY_SIZE(at91sam9x5_systemck); i++) {
238 hw = at91_clk_register_system(regmap, at91sam9x5_systemck[i].n,
239 at91sam9x5_systemck[i].p,
240 at91sam9x5_systemck[i].id);
241 if (IS_ERR(hw))
242 goto err_free;
243
244 at91sam9x5_pmc->shws[at91sam9x5_systemck[i].id] = hw;
245 }
246
247 if (has_lcdck) {
248 hw = at91_clk_register_system(regmap, "lcdck", "masterck", 3);
249 if (IS_ERR(hw))
250 goto err_free;
251
252 at91sam9x5_pmc->shws[3] = hw;
253 }
254
255 for (i = 0; i < ARRAY_SIZE(at91sam9x5_periphck); i++) {
256 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
cb4f4949 257 &at91sam9x5_pcr_layout,
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258 at91sam9x5_periphck[i].n,
259 "masterck",
260 at91sam9x5_periphck[i].id,
b4c115c7 261 &range, INT_MIN);
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262 if (IS_ERR(hw))
263 goto err_free;
264
265 at91sam9x5_pmc->phws[at91sam9x5_periphck[i].id] = hw;
266 }
267
268 for (i = 0; extra_pcks[i].id; i++) {
269 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
cb4f4949 270 &at91sam9x5_pcr_layout,
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271 extra_pcks[i].n,
272 "masterck",
273 extra_pcks[i].id,
b4c115c7 274 &range, INT_MIN);
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275 if (IS_ERR(hw))
276 goto err_free;
277
278 at91sam9x5_pmc->phws[extra_pcks[i].id] = hw;
279 }
280
281 of_clk_add_hw_provider(np, of_clk_hw_pmc_get, at91sam9x5_pmc);
282
283 return;
284
285err_free:
7425f246 286 kfree(at91sam9x5_pmc);
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287}
288
289static void __init at91sam9g15_pmc_setup(struct device_node *np)
290{
291 at91sam9x5_pmc_setup(np, at91sam9g15_periphck, true);
292}
293CLK_OF_DECLARE_DRIVER(at91sam9g15_pmc, "atmel,at91sam9g15-pmc",
294 at91sam9g15_pmc_setup);
295
296static void __init at91sam9g25_pmc_setup(struct device_node *np)
297{
298 at91sam9x5_pmc_setup(np, at91sam9g25_periphck, false);
299}
300CLK_OF_DECLARE_DRIVER(at91sam9g25_pmc, "atmel,at91sam9g25-pmc",
301 at91sam9g25_pmc_setup);
302
303static void __init at91sam9g35_pmc_setup(struct device_node *np)
304{
305 at91sam9x5_pmc_setup(np, at91sam9g35_periphck, true);
306}
307CLK_OF_DECLARE_DRIVER(at91sam9g35_pmc, "atmel,at91sam9g35-pmc",
308 at91sam9g35_pmc_setup);
309
310static void __init at91sam9x25_pmc_setup(struct device_node *np)
311{
312 at91sam9x5_pmc_setup(np, at91sam9x25_periphck, false);
313}
314CLK_OF_DECLARE_DRIVER(at91sam9x25_pmc, "atmel,at91sam9x25-pmc",
315 at91sam9x25_pmc_setup);
316
317static void __init at91sam9x35_pmc_setup(struct device_node *np)
318{
319 at91sam9x5_pmc_setup(np, at91sam9x35_periphck, true);
320}
321CLK_OF_DECLARE_DRIVER(at91sam9x35_pmc, "atmel,at91sam9x35-pmc",
322 at91sam9x35_pmc_setup);