1
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 = 124000000, .max = 166000000 },
12 .divisors = { 1, 2, 4, 3 },
13};
14
15static u8 plla_out[] = { 0 };
16
17static u16 plla_icpll[] = { 0 };
18
19static const struct clk_range plla_outputs[] = {
20 { .min = 600000000, .max = 1200000000 },
21};
22
23static const struct clk_pll_characteristics plla_characteristics = {
24 .input = { .min = 12000000, .max = 12000000 },
25 .num_output = ARRAY_SIZE(plla_outputs),
26 .output = plla_outputs,
27 .icpll = plla_icpll,
28 .out = plla_out,
29};
30
31static const struct clk_pcr_layout sama5d2_pcr_layout = {
32 .offset = 0x10c,
33 .cmd = BIT(12),
34 .gckcss_mask = GENMASK(10, 8),
35 .pid_mask = GENMASK(6, 0),
36};
37
38static const struct {
39 char *n;
40 char *p;
41 u8 id;
42} sama5d2_systemck[] = {
43 { .n = "ddrck", .p = "masterck", .id = 2 },
44 { .n = "lcdck", .p = "masterck", .id = 3 },
45 { .n = "uhpck", .p = "usbck", .id = 6 },
46 { .n = "udpck", .p = "usbck", .id = 7 },
47 { .n = "pck0", .p = "prog0", .id = 8 },
48 { .n = "pck1", .p = "prog1", .id = 9 },
49 { .n = "pck2", .p = "prog2", .id = 10 },
50 { .n = "iscck", .p = "masterck", .id = 18 },
51};
52
53static const struct {
54 char *n;
55 u8 id;
56 struct clk_range r;
57} sama5d2_periph32ck[] = {
58 { .n = "macb0_clk", .id = 5, .r = { .min = 0, .max = 83000000 }, },
59 { .n = "tdes_clk", .id = 11, .r = { .min = 0, .max = 83000000 }, },
60 { .n = "matrix1_clk", .id = 14, },
61 { .n = "hsmc_clk", .id = 17, },
62 { .n = "pioA_clk", .id = 18, .r = { .min = 0, .max = 83000000 }, },
63 { .n = "flx0_clk", .id = 19, .r = { .min = 0, .max = 83000000 }, },
64 { .n = "flx1_clk", .id = 20, .r = { .min = 0, .max = 83000000 }, },
65 { .n = "flx2_clk", .id = 21, .r = { .min = 0, .max = 83000000 }, },
66 { .n = "flx3_clk", .id = 22, .r = { .min = 0, .max = 83000000 }, },
67 { .n = "flx4_clk", .id = 23, .r = { .min = 0, .max = 83000000 }, },
68 { .n = "uart0_clk", .id = 24, .r = { .min = 0, .max = 83000000 }, },
69 { .n = "uart1_clk", .id = 25, .r = { .min = 0, .max = 83000000 }, },
70 { .n = "uart2_clk", .id = 26, .r = { .min = 0, .max = 83000000 }, },
71 { .n = "uart3_clk", .id = 27, .r = { .min = 0, .max = 83000000 }, },
72 { .n = "uart4_clk", .id = 28, .r = { .min = 0, .max = 83000000 }, },
73 { .n = "twi0_clk", .id = 29, .r = { .min = 0, .max = 83000000 }, },
74 { .n = "twi1_clk", .id = 30, .r = { .min = 0, .max = 83000000 }, },
75 { .n = "spi0_clk", .id = 33, .r = { .min = 0, .max = 83000000 }, },
76 { .n = "spi1_clk", .id = 34, .r = { .min = 0, .max = 83000000 }, },
77 { .n = "tcb0_clk", .id = 35, .r = { .min = 0, .max = 83000000 }, },
78 { .n = "tcb1_clk", .id = 36, .r = { .min = 0, .max = 83000000 }, },
79 { .n = "pwm_clk", .id = 38, .r = { .min = 0, .max = 83000000 }, },
80 { .n = "adc_clk", .id = 40, .r = { .min = 0, .max = 83000000 }, },
81 { .n = "uhphs_clk", .id = 41, .r = { .min = 0, .max = 83000000 }, },
82 { .n = "udphs_clk", .id = 42, .r = { .min = 0, .max = 83000000 }, },
83 { .n = "ssc0_clk", .id = 43, .r = { .min = 0, .max = 83000000 }, },
84 { .n = "ssc1_clk", .id = 44, .r = { .min = 0, .max = 83000000 }, },
85 { .n = "trng_clk", .id = 47, .r = { .min = 0, .max = 83000000 }, },
86 { .n = "pdmic_clk", .id = 48, .r = { .min = 0, .max = 83000000 }, },
87 { .n = "securam_clk", .id = 51, },
88 { .n = "i2s0_clk", .id = 54, .r = { .min = 0, .max = 83000000 }, },
89 { .n = "i2s1_clk", .id = 55, .r = { .min = 0, .max = 83000000 }, },
90 { .n = "can0_clk", .id = 56, .r = { .min = 0, .max = 83000000 }, },
91 { .n = "can1_clk", .id = 57, .r = { .min = 0, .max = 83000000 }, },
92 { .n = "classd_clk", .id = 59, .r = { .min = 0, .max = 83000000 }, },
93};
94
95static const struct {
96 char *n;
97 u8 id;
98} sama5d2_periphck[] = {
99 { .n = "dma0_clk", .id = 6, },
100 { .n = "dma1_clk", .id = 7, },
101 { .n = "aes_clk", .id = 9, },
102 { .n = "aesb_clk", .id = 10, },
103 { .n = "sha_clk", .id = 12, },
104 { .n = "mpddr_clk", .id = 13, },
105 { .n = "matrix0_clk", .id = 15, },
106 { .n = "sdmmc0_hclk", .id = 31, },
107 { .n = "sdmmc1_hclk", .id = 32, },
108 { .n = "lcdc_clk", .id = 45, },
109 { .n = "isc_clk", .id = 46, },
110 { .n = "qspi0_clk", .id = 52, },
111 { .n = "qspi1_clk", .id = 53, },
112};
113
114static const struct {
115 char *n;
116 u8 id;
117 struct clk_range r;
118 bool pll;
119} sama5d2_gck[] = {
120 { .n = "sdmmc0_gclk", .id = 31, },
121 { .n = "sdmmc1_gclk", .id = 32, },
122 { .n = "tcb0_gclk", .id = 35, .r = { .min = 0, .max = 83000000 }, },
123 { .n = "tcb1_gclk", .id = 36, .r = { .min = 0, .max = 83000000 }, },
124 { .n = "pwm_gclk", .id = 38, .r = { .min = 0, .max = 83000000 }, },
125 { .n = "isc_gclk", .id = 46, },
126 { .n = "pdmic_gclk", .id = 48, },
127 { .n = "i2s0_gclk", .id = 54, .pll = true },
128 { .n = "i2s1_gclk", .id = 55, .pll = true },
129 { .n = "can0_gclk", .id = 56, .r = { .min = 0, .max = 80000000 }, },
130 { .n = "can1_gclk", .id = 57, .r = { .min = 0, .max = 80000000 }, },
131 { .n = "classd_gclk", .id = 59, .r = { .min = 0, .max = 100000000 },
132 .pll = true },
133};
134
135static const struct clk_programmable_layout sama5d2_programmable_layout = {
136 .pres_mask = 0xff,
137 .pres_shift = 4,
138 .css_mask = 0x7,
139 .have_slck_mck = 0,
140 .is_pres_direct = 1,
141};
142
143static void __init sama5d2_pmc_setup(struct device_node *np)
144{
145 struct clk_range range = CLK_RANGE(0, 0);
146 const char *slck_name, *mainxtal_name;
147 struct pmc_data *sama5d2_pmc;
148 const char *parent_names[6];
149 struct regmap *regmap, *regmap_sfr;
150 struct clk_hw *hw;
151 int i;
152 bool bypass;
153
154 i = of_property_match_string(np, "clock-names", "slow_clk");
155 if (i < 0)
156 return;
157
158 slck_name = of_clk_get_parent_name(np, i);
159
160 i = of_property_match_string(np, "clock-names", "main_xtal");
161 if (i < 0)
162 return;
163 mainxtal_name = of_clk_get_parent_name(np, i);
164
165 regmap = syscon_node_to_regmap(np);
166 if (IS_ERR(regmap))
167 return;
168
169 sama5d2_pmc = pmc_data_allocate(PMC_I2S1_MUX + 1,
170 nck(sama5d2_systemck),
171 nck(sama5d2_periph32ck),
172 nck(sama5d2_gck));
173 if (!sama5d2_pmc)
174 return;
175
176 hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
177 100000000);
178 if (IS_ERR(hw))
179 goto err_free;
180
181 bypass = of_property_read_bool(np, "atmel,osc-bypass");
182
183 hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
184 bypass);
185 if (IS_ERR(hw))
186 goto err_free;
187
188 parent_names[0] = "main_rc_osc";
189 parent_names[1] = "main_osc";
190 hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
191 if (IS_ERR(hw))
192 goto err_free;
193
194 sama5d2_pmc->chws[PMC_MAIN] = hw;
195
196 hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
197 &sama5d3_pll_layout, &plla_characteristics);
198 if (IS_ERR(hw))
199 goto err_free;
200
201 hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
202 if (IS_ERR(hw))
203 goto err_free;
204
205 hw = at91_clk_register_audio_pll_frac(regmap, "audiopll_fracck",
206 "mainck");
207 if (IS_ERR(hw))
208 goto err_free;
209
210 hw = at91_clk_register_audio_pll_pad(regmap, "audiopll_padck",
211 "audiopll_fracck");
212 if (IS_ERR(hw))
213 goto err_free;
214
215 hw = at91_clk_register_audio_pll_pmc(regmap, "audiopll_pmcck",
216 "audiopll_fracck");
217 if (IS_ERR(hw))
218 goto err_free;
219
220 regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
221 if (IS_ERR(regmap_sfr))
222 regmap_sfr = NULL;
223
224 hw = at91_clk_register_utmi(regmap, regmap_sfr, "utmick", "mainck");
225 if (IS_ERR(hw))
226 goto err_free;
227
228 sama5d2_pmc->chws[PMC_UTMI] = hw;
229
230 parent_names[0] = slck_name;
231 parent_names[1] = "mainck";
232 parent_names[2] = "plladivck";
233 parent_names[3] = "utmick";
234 hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
235 &at91sam9x5_master_layout,
236 &mck_characteristics);
237 if (IS_ERR(hw))
238 goto err_free;
239
240 sama5d2_pmc->chws[PMC_MCK] = hw;
241
242 hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck");
243 if (IS_ERR(hw))
244 goto err_free;
245
246 sama5d2_pmc->chws[PMC_MCK2] = hw;
247
248 parent_names[0] = "plladivck";
249 parent_names[1] = "utmick";
250 hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
251 if (IS_ERR(hw))
252 goto err_free;
253
254 parent_names[0] = slck_name;
255 parent_names[1] = "mainck";
256 parent_names[2] = "plladivck";
257 parent_names[3] = "utmick";
258 parent_names[4] = "masterck";
259 parent_names[5] = "audiopll_pmcck";
260 for (i = 0; i < 3; i++) {
261 char name[6];
262
263 snprintf(name, sizeof(name), "prog%d", i);
264
265 hw = at91_clk_register_programmable(regmap, name,
266 parent_names, 6, i,
267 &sama5d2_programmable_layout);
268 if (IS_ERR(hw))
269 goto err_free;
270 }
271
272 for (i = 0; i < ARRAY_SIZE(sama5d2_systemck); i++) {
273 hw = at91_clk_register_system(regmap, sama5d2_systemck[i].n,
274 sama5d2_systemck[i].p,
275 sama5d2_systemck[i].id);
276 if (IS_ERR(hw))
277 goto err_free;
278
279 sama5d2_pmc->shws[sama5d2_systemck[i].id] = hw;
280 }
281
282 for (i = 0; i < ARRAY_SIZE(sama5d2_periphck); i++) {
283 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
284 &sama5d2_pcr_layout,
285 sama5d2_periphck[i].n,
286 "masterck",
287 sama5d2_periphck[i].id,
288 &range);
289 if (IS_ERR(hw))
290 goto err_free;
291
292 sama5d2_pmc->phws[sama5d2_periphck[i].id] = hw;
293 }
294
295 for (i = 0; i < ARRAY_SIZE(sama5d2_periph32ck); i++) {
296 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
297 &sama5d2_pcr_layout,
298 sama5d2_periph32ck[i].n,
299 "h32mxck",
300 sama5d2_periph32ck[i].id,
301 &sama5d2_periph32ck[i].r);
302 if (IS_ERR(hw))
303 goto err_free;
304
305 sama5d2_pmc->phws[sama5d2_periph32ck[i].id] = hw;
306 }
307
308 parent_names[0] = slck_name;
309 parent_names[1] = "mainck";
310 parent_names[2] = "plladivck";
311 parent_names[3] = "utmick";
312 parent_names[4] = "masterck";
313 parent_names[5] = "audiopll_pmcck";
314 for (i = 0; i < ARRAY_SIZE(sama5d2_gck); i++) {
315 hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
316 &sama5d2_pcr_layout,
317 sama5d2_gck[i].n,
318 parent_names, 6,
319 sama5d2_gck[i].id,
320 sama5d2_gck[i].pll,
321 &sama5d2_gck[i].r);
322 if (IS_ERR(hw))
323 goto err_free;
324
325 sama5d2_pmc->ghws[sama5d2_gck[i].id] = hw;
326 }
327
328 if (regmap_sfr) {
329 parent_names[0] = "i2s0_clk";
330 parent_names[1] = "i2s0_gclk";
331 hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s0_muxclk",
332 parent_names, 2, 0);
333 if (IS_ERR(hw))
334 goto err_free;
335
336 sama5d2_pmc->chws[PMC_I2S0_MUX] = hw;
337
338 parent_names[0] = "i2s1_clk";
339 parent_names[1] = "i2s1_gclk";
340 hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s1_muxclk",
341 parent_names, 2, 1);
342 if (IS_ERR(hw))
343 goto err_free;
344
345 sama5d2_pmc->chws[PMC_I2S1_MUX] = hw;
346 }
347
348 of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sama5d2_pmc);
349
350 return;
351
352err_free:
353 pmc_data_free(sama5d2_pmc);
354}
355CLK_OF_DECLARE_DRIVER(sama5d2_pmc, "atmel,sama5d2-pmc", sama5d2_pmc_setup);
356
