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 = 125000000, .max = 200000000 },
12 .divisors = { 1, 2, 4, 3 },
13};
14
15static u8 plla_out[] = { 0 };
16
17static u16 plla_icpll[] = { 0 };
18
19static 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 {
32 char *n;
33 char *p;
34 u8 id;
35} sama5d4_systemck[] = {
36 { .n = "ddrck", .p = "masterck", .id = 2 },
37 { .n = "lcdck", .p = "masterck", .id = 3 },
38 { .n = "smdck", .p = "smdclk", .id = 4 },
39 { .n = "uhpck", .p = "usbck", .id = 6 },
40 { .n = "udpck", .p = "usbck", .id = 7 },
41 { .n = "pck0", .p = "prog0", .id = 8 },
42 { .n = "pck1", .p = "prog1", .id = 9 },
43 { .n = "pck2", .p = "prog2", .id = 10 },
44};
45
46static const struct {
47 char *n;
48 u8 id;
49} sama5d4_periph32ck[] = {
50 { .n = "pioD_clk", .id = 5 },
51 { .n = "usart0_clk", .id = 6 },
52 { .n = "usart1_clk", .id = 7 },
53 { .n = "icm_clk", .id = 9 },
54 { .n = "aes_clk", .id = 12 },
55 { .n = "tdes_clk", .id = 14 },
56 { .n = "sha_clk", .id = 15 },
57 { .n = "matrix1_clk", .id = 17 },
58 { .n = "hsmc_clk", .id = 22 },
59 { .n = "pioA_clk", .id = 23 },
60 { .n = "pioB_clk", .id = 24 },
61 { .n = "pioC_clk", .id = 25 },
62 { .n = "pioE_clk", .id = 26 },
63 { .n = "uart0_clk", .id = 27 },
64 { .n = "uart1_clk", .id = 28 },
65 { .n = "usart2_clk", .id = 29 },
66 { .n = "usart3_clk", .id = 30 },
67 { .n = "usart4_clk", .id = 31 },
68 { .n = "twi0_clk", .id = 32 },
69 { .n = "twi1_clk", .id = 33 },
70 { .n = "twi2_clk", .id = 34 },
71 { .n = "mci0_clk", .id = 35 },
72 { .n = "mci1_clk", .id = 36 },
73 { .n = "spi0_clk", .id = 37 },
74 { .n = "spi1_clk", .id = 38 },
75 { .n = "spi2_clk", .id = 39 },
76 { .n = "tcb0_clk", .id = 40 },
77 { .n = "tcb1_clk", .id = 41 },
78 { .n = "tcb2_clk", .id = 42 },
79 { .n = "pwm_clk", .id = 43 },
80 { .n = "adc_clk", .id = 44 },
81 { .n = "dbgu_clk", .id = 45 },
82 { .n = "uhphs_clk", .id = 46 },
83 { .n = "udphs_clk", .id = 47 },
84 { .n = "ssc0_clk", .id = 48 },
85 { .n = "ssc1_clk", .id = 49 },
86 { .n = "trng_clk", .id = 53 },
87 { .n = "macb0_clk", .id = 54 },
88 { .n = "macb1_clk", .id = 55 },
89 { .n = "fuse_clk", .id = 57 },
90 { .n = "securam_clk", .id = 59 },
91 { .n = "smd_clk", .id = 61 },
92 { .n = "twi3_clk", .id = 62 },
93 { .n = "catb_clk", .id = 63 },
94};
95
96static const struct {
97 char *n;
98 u8 id;
99} sama5d4_periphck[] = {
100 { .n = "dma0_clk", .id = 8 },
101 { .n = "cpkcc_clk", .id = 10 },
102 { .n = "aesb_clk", .id = 13 },
103 { .n = "mpddr_clk", .id = 16 },
104 { .n = "matrix0_clk", .id = 18 },
105 { .n = "vdec_clk", .id = 19 },
106 { .n = "dma1_clk", .id = 50 },
107 { .n = "lcdc_clk", .id = 51 },
108 { .n = "isi_clk", .id = 52 },
109};
110
111static void __init sama5d4_pmc_setup(struct device_node *np)
112{
113 struct clk_range range = CLK_RANGE(0, 0);
114 const char *slck_name, *mainxtal_name;
115 struct pmc_data *sama5d4_pmc;
116 const char *parent_names[5];
117 struct regmap *regmap;
118 struct clk_hw *hw;
119 int i;
120 bool bypass;
121
122 i = of_property_match_string(np, "clock-names", "slow_clk");
123 if (i < 0)
124 return;
125
126 slck_name = of_clk_get_parent_name(np, i);
127
128 i = of_property_match_string(np, "clock-names", "main_xtal");
129 if (i < 0)
130 return;
131 mainxtal_name = of_clk_get_parent_name(np, i);
132
133 regmap = syscon_node_to_regmap(np);
134 if (IS_ERR(regmap))
135 return;
136
137 sama5d4_pmc = pmc_data_allocate(PMC_MCK2 + 1,
138 nck(sama5d4_systemck),
139 nck(sama5d4_periph32ck), 0);
140 if (!sama5d4_pmc)
141 return;
142
143 hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
144 100000000);
145 if (IS_ERR(hw))
146 goto err_free;
147
148 bypass = of_property_read_bool(np, "atmel,osc-bypass");
149
150 hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
151 bypass);
152 if (IS_ERR(hw))
153 goto err_free;
154
155 parent_names[0] = "main_rc_osc";
156 parent_names[1] = "main_osc";
157 hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
158 if (IS_ERR(hw))
159 goto err_free;
160
161 hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
162 &sama5d3_pll_layout, &plla_characteristics);
163 if (IS_ERR(hw))
164 goto err_free;
165
166 hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
167 if (IS_ERR(hw))
168 goto err_free;
169
170 hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck");
171 if (IS_ERR(hw))
172 goto err_free;
173
174 sama5d4_pmc->chws[PMC_UTMI] = hw;
175
176 parent_names[0] = slck_name;
177 parent_names[1] = "mainck";
178 parent_names[2] = "plladivck";
179 parent_names[3] = "utmick";
180 hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
181 &at91sam9x5_master_layout,
182 &mck_characteristics);
183 if (IS_ERR(hw))
184 goto err_free;
185
186 sama5d4_pmc->chws[PMC_MCK] = hw;
187
188 hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck");
189 if (IS_ERR(hw))
190 goto err_free;
191
192 sama5d4_pmc->chws[PMC_MCK2] = hw;
193
194 parent_names[0] = "plladivck";
195 parent_names[1] = "utmick";
196 hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
197 if (IS_ERR(hw))
198 goto err_free;
199
200 parent_names[0] = "plladivck";
201 parent_names[1] = "utmick";
202 hw = at91sam9x5_clk_register_smd(regmap, "smdclk", parent_names, 2);
203 if (IS_ERR(hw))
204 goto err_free;
205
206 parent_names[0] = slck_name;
207 parent_names[1] = "mainck";
208 parent_names[2] = "plladivck";
209 parent_names[3] = "utmick";
210 parent_names[4] = "mck";
211 for (i = 0; i < 3; i++) {
212 char name[6];
213
214 snprintf(name, sizeof(name), "prog%d", i);
215
216 hw = at91_clk_register_programmable(regmap, name,
217 parent_names, 5, i,
218 &at91sam9x5_programmable_layout);
219 if (IS_ERR(hw))
220 goto err_free;
221 }
222
223 for (i = 0; i < ARRAY_SIZE(sama5d4_systemck); i++) {
224 hw = at91_clk_register_system(regmap, sama5d4_systemck[i].n,
225 sama5d4_systemck[i].p,
226 sama5d4_systemck[i].id);
227 if (IS_ERR(hw))
228 goto err_free;
229
230 sama5d4_pmc->shws[sama5d4_systemck[i].id] = hw;
231 }
232
233 for (i = 0; i < ARRAY_SIZE(sama5d4_periphck); i++) {
234 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
235 sama5d4_periphck[i].n,
236 "masterck",
237 sama5d4_periphck[i].id,
238 &range);
239 if (IS_ERR(hw))
240 goto err_free;
241
242 sama5d4_pmc->phws[sama5d4_periphck[i].id] = hw;
243 }
244
245 for (i = 0; i < ARRAY_SIZE(sama5d4_periph32ck); i++) {
246 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
247 sama5d4_periph32ck[i].n,
248 "h32mxck",
249 sama5d4_periph32ck[i].id,
250 &range);
251 if (IS_ERR(hw))
252 goto err_free;
253
254 sama5d4_pmc->phws[sama5d4_periph32ck[i].id] = hw;
255 }
256
257 of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sama5d4_pmc);
258
259 return;
260
261err_free:
262 pmc_data_free(sama5d4_pmc);
263}
264CLK_OF_DECLARE_DRIVER(sama5d4_pmc, "atmel,sama5d4-pmc", sama5d4_pmc_setup);
265
