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 DEFINE_SPINLOCK(pmc_pll_lock);
11
12static const struct clk_master_characteristics mck_characteristics = {
13 .output = { .min = 140000000, .max = 200000000 },
14 .divisors = { 1, 2, 4, 3 },
15 .have_div3_pres = 1,
16};
17
18static const struct clk_master_layout sam9x60_master_layout = {
19 .mask = 0x373,
20 .pres_shift = 4,
21 .offset = 0x28,
22};
23
24static const struct clk_range plla_outputs[] = {
25 { .min = 300000000, .max = 600000000 },
26};
27
28static const struct clk_pll_characteristics plla_characteristics = {
29 .input = { .min = 12000000, .max = 48000000 },
30 .num_output = ARRAY_SIZE(plla_outputs),
31 .output = plla_outputs,
32};
33
34static const struct clk_range upll_outputs[] = {
35 { .min = 300000000, .max = 500000000 },
36};
37
38static const struct clk_pll_characteristics upll_characteristics = {
39 .input = { .min = 12000000, .max = 48000000 },
40 .num_output = ARRAY_SIZE(upll_outputs),
41 .output = upll_outputs,
42 .upll = true,
43};
44
45static const struct clk_programmable_layout sam9x60_programmable_layout = {
46 .pres_shift = 8,
47 .css_mask = 0x1f,
48 .have_slck_mck = 0,
49};
50
51static const struct clk_pcr_layout sam9x60_pcr_layout = {
52 .offset = 0x88,
53 .cmd = BIT(31),
54 .gckcss_mask = GENMASK(12, 8),
55 .pid_mask = GENMASK(6, 0),
56};
57
58static const struct {
59 char *n;
60 char *p;
61 u8 id;
62} sam9x60_systemck[] = {
63 { .n = "ddrck", .p = "masterck", .id = 2 },
64 { .n = "uhpck", .p = "usbck", .id = 6 },
65 { .n = "pck0", .p = "prog0", .id = 8 },
66 { .n = "pck1", .p = "prog1", .id = 9 },
67 { .n = "qspick", .p = "masterck", .id = 19 },
68};
69
70static const struct {
71 char *n;
72 u8 id;
73} sam9x60_periphck[] = {
74 { .n = "pioA_clk", .id = 2, },
75 { .n = "pioB_clk", .id = 3, },
76 { .n = "pioC_clk", .id = 4, },
77 { .n = "flex0_clk", .id = 5, },
78 { .n = "flex1_clk", .id = 6, },
79 { .n = "flex2_clk", .id = 7, },
80 { .n = "flex3_clk", .id = 8, },
81 { .n = "flex6_clk", .id = 9, },
82 { .n = "flex7_clk", .id = 10, },
83 { .n = "flex8_clk", .id = 11, },
84 { .n = "sdmmc0_clk", .id = 12, },
85 { .n = "flex4_clk", .id = 13, },
86 { .n = "flex5_clk", .id = 14, },
87 { .n = "flex9_clk", .id = 15, },
88 { .n = "flex10_clk", .id = 16, },
89 { .n = "tcb0_clk", .id = 17, },
90 { .n = "pwm_clk", .id = 18, },
91 { .n = "adc_clk", .id = 19, },
92 { .n = "dma0_clk", .id = 20, },
93 { .n = "matrix_clk", .id = 21, },
94 { .n = "uhphs_clk", .id = 22, },
95 { .n = "udphs_clk", .id = 23, },
96 { .n = "macb0_clk", .id = 24, },
97 { .n = "lcd_clk", .id = 25, },
98 { .n = "sdmmc1_clk", .id = 26, },
99 { .n = "macb1_clk", .id = 27, },
100 { .n = "ssc_clk", .id = 28, },
101 { .n = "can0_clk", .id = 29, },
102 { .n = "can1_clk", .id = 30, },
103 { .n = "flex11_clk", .id = 32, },
104 { .n = "flex12_clk", .id = 33, },
105 { .n = "i2s_clk", .id = 34, },
106 { .n = "qspi_clk", .id = 35, },
107 { .n = "gfx2d_clk", .id = 36, },
108 { .n = "pit64b_clk", .id = 37, },
109 { .n = "trng_clk", .id = 38, },
110 { .n = "aes_clk", .id = 39, },
111 { .n = "tdes_clk", .id = 40, },
112 { .n = "sha_clk", .id = 41, },
113 { .n = "classd_clk", .id = 42, },
114 { .n = "isi_clk", .id = 43, },
115 { .n = "pioD_clk", .id = 44, },
116 { .n = "tcb1_clk", .id = 45, },
117 { .n = "dbgu_clk", .id = 47, },
118 { .n = "mpddr_clk", .id = 49, },
119};
120
121static const struct {
122 char *n;
123 u8 id;
124 struct clk_range r;
125 bool pll;
126} sam9x60_gck[] = {
127 { .n = "flex0_gclk", .id = 5, },
128 { .n = "flex1_gclk", .id = 6, },
129 { .n = "flex2_gclk", .id = 7, },
130 { .n = "flex3_gclk", .id = 8, },
131 { .n = "flex6_gclk", .id = 9, },
132 { .n = "flex7_gclk", .id = 10, },
133 { .n = "flex8_gclk", .id = 11, },
134 { .n = "sdmmc0_gclk", .id = 12, .r = { .min = 0, .max = 105000000 }, },
135 { .n = "flex4_gclk", .id = 13, },
136 { .n = "flex5_gclk", .id = 14, },
137 { .n = "flex9_gclk", .id = 15, },
138 { .n = "flex10_gclk", .id = 16, },
139 { .n = "tcb0_gclk", .id = 17, },
140 { .n = "adc_gclk", .id = 19, },
141 { .n = "lcd_gclk", .id = 25, .r = { .min = 0, .max = 140000000 }, },
142 { .n = "sdmmc1_gclk", .id = 26, .r = { .min = 0, .max = 105000000 }, },
143 { .n = "flex11_gclk", .id = 32, },
144 { .n = "flex12_gclk", .id = 33, },
145 { .n = "i2s_gclk", .id = 34, .r = { .min = 0, .max = 105000000 },
146 .pll = true, },
147 { .n = "pit64b_gclk", .id = 37, },
148 { .n = "classd_gclk", .id = 42, .r = { .min = 0, .max = 100000000 },
149 .pll = true, },
150 { .n = "tcb1_gclk", .id = 45, },
151 { .n = "dbgu_gclk", .id = 47, },
152};
153
154static void __init sam9x60_pmc_setup(struct device_node *np)
155{
156 struct clk_range range = CLK_RANGE(0, 0);
157 const char *td_slck_name, *md_slck_name, *mainxtal_name;
158 struct pmc_data *sam9x60_pmc;
159 const char *parent_names[6];
160 struct regmap *regmap;
161 struct clk_hw *hw;
162 int i;
163 bool bypass;
164
165 i = of_property_match_string(np, "clock-names", "td_slck");
166 if (i < 0)
167 return;
168
169 td_slck_name = of_clk_get_parent_name(np, i);
170
171 i = of_property_match_string(np, "clock-names", "md_slck");
172 if (i < 0)
173 return;
174
175 md_slck_name = of_clk_get_parent_name(np, i);
176
177 i = of_property_match_string(np, "clock-names", "main_xtal");
178 if (i < 0)
179 return;
180 mainxtal_name = of_clk_get_parent_name(np, i);
181
182 regmap = syscon_node_to_regmap(np);
183 if (IS_ERR(regmap))
184 return;
185
186 sam9x60_pmc = pmc_data_allocate(PMC_MAIN + 1,
187 nck(sam9x60_systemck),
188 nck(sam9x60_periphck),
189 nck(sam9x60_gck));
190 if (!sam9x60_pmc)
191 return;
192
193 hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 24000000,
194 50000000);
195 if (IS_ERR(hw))
196 goto err_free;
197
198 bypass = of_property_read_bool(np, "atmel,osc-bypass");
199
200 hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
201 bypass);
202 if (IS_ERR(hw))
203 goto err_free;
204
205 parent_names[0] = "main_rc_osc";
206 parent_names[1] = "main_osc";
207 hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
208 if (IS_ERR(hw))
209 goto err_free;
210
211 sam9x60_pmc->chws[PMC_MAIN] = hw;
212
213 hw = sam9x60_clk_register_pll(regmap, &pmc_pll_lock, "pllack",
214 "mainck", 0, &plla_characteristics);
215 if (IS_ERR(hw))
216 goto err_free;
217
218 hw = sam9x60_clk_register_pll(regmap, &pmc_pll_lock, "upllck",
219 "main_osc", 1, &upll_characteristics);
220 if (IS_ERR(hw))
221 goto err_free;
222
223 sam9x60_pmc->chws[PMC_UTMI] = hw;
224
225 parent_names[0] = md_slck_name;
226 parent_names[1] = "mainck";
227 parent_names[2] = "pllack";
228 hw = at91_clk_register_master(regmap, "masterck", 3, parent_names,
229 &sam9x60_master_layout,
230 &mck_characteristics);
231 if (IS_ERR(hw))
232 goto err_free;
233
234 sam9x60_pmc->chws[PMC_MCK] = hw;
235
236 parent_names[0] = "pllack";
237 parent_names[1] = "upllck";
238 parent_names[2] = "mainck";
239 parent_names[3] = "mainck";
240 hw = sam9x60_clk_register_usb(regmap, "usbck", parent_names, 4);
241 if (IS_ERR(hw))
242 goto err_free;
243
244 parent_names[0] = md_slck_name;
245 parent_names[1] = td_slck_name;
246 parent_names[2] = "mainck";
247 parent_names[3] = "masterck";
248 parent_names[4] = "pllack";
249 parent_names[5] = "upllck";
250 for (i = 0; i < 8; i++) {
251 char name[6];
252
253 snprintf(name, sizeof(name), "prog%d", i);
254
255 hw = at91_clk_register_programmable(regmap, name,
256 parent_names, 6, i,
257 &sam9x60_programmable_layout);
258 if (IS_ERR(hw))
259 goto err_free;
260 }
261
262 for (i = 0; i < ARRAY_SIZE(sam9x60_systemck); i++) {
263 hw = at91_clk_register_system(regmap, sam9x60_systemck[i].n,
264 sam9x60_systemck[i].p,
265 sam9x60_systemck[i].id);
266 if (IS_ERR(hw))
267 goto err_free;
268
269 sam9x60_pmc->shws[sam9x60_systemck[i].id] = hw;
270 }
271
272 for (i = 0; i < ARRAY_SIZE(sam9x60_periphck); i++) {
273 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
274 &sam9x60_pcr_layout,
275 sam9x60_periphck[i].n,
276 "masterck",
277 sam9x60_periphck[i].id,
278 &range);
279 if (IS_ERR(hw))
280 goto err_free;
281
282 sam9x60_pmc->phws[sam9x60_periphck[i].id] = hw;
283 }
284
285 for (i = 0; i < ARRAY_SIZE(sam9x60_gck); i++) {
286 hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
287 &sam9x60_pcr_layout,
288 sam9x60_gck[i].n,
289 parent_names, 6,
290 sam9x60_gck[i].id,
291 sam9x60_gck[i].pll,
292 &sam9x60_gck[i].r);
293 if (IS_ERR(hw))
294 goto err_free;
295
296 sam9x60_pmc->ghws[sam9x60_gck[i].id] = hw;
297 }
298
299 of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sam9x60_pmc);
300
301 return;
302
303err_free:
304 pmc_data_free(sam9x60_pmc);
305}
306
307CLK_OF_DECLARE(sam9x60_pmc, "microchip,sam9x60-pmc", sam9x60_pmc_setup);
308
