1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright 2018 NXP
4 * Peng Fan <peng.fan@nxp.com>
5 */
6
7 #include <common.h>
8 #include <clk-uclass.h>
9 #include <dm.h>
10 #include <asm/arch/sci/sci.h>
11 #include <asm/arch/clock.h>
12 #include <dt-bindings/clock/imx8qxp-clock.h>
13 #include <dt-bindings/soc/imx_rsrc.h>
14 #include <misc.h>
15
16 #include "clk-imx8.h"
17
18 #if CONFIG_IS_ENABLED(CMD_CLK)
19 struct imx8_clks imx8_clk_names[] = {
20 { IMX8QXP_A35_DIV, "A35_DIV" },
21 { IMX8QXP_I2C0_CLK, "I2C0" },
22 { IMX8QXP_I2C1_CLK, "I2C1" },
23 { IMX8QXP_I2C2_CLK, "I2C2" },
24 { IMX8QXP_I2C3_CLK, "I2C3" },
25 { IMX8QXP_UART0_CLK, "UART0" },
26 { IMX8QXP_UART1_CLK, "UART1" },
27 { IMX8QXP_UART2_CLK, "UART2" },
28 { IMX8QXP_UART3_CLK, "UART3" },
29 { IMX8QXP_SDHC0_CLK, "SDHC0" },
30 { IMX8QXP_SDHC1_CLK, "SDHC1" },
31 { IMX8QXP_ENET0_AHB_CLK, "ENET0_AHB" },
32 { IMX8QXP_ENET0_IPG_CLK, "ENET0_IPG" },
33 { IMX8QXP_ENET0_REF_DIV, "ENET0_REF" },
34 { IMX8QXP_ENET0_PTP_CLK, "ENET0_PTP" },
35 { IMX8QXP_ENET1_AHB_CLK, "ENET1_AHB" },
36 { IMX8QXP_ENET1_IPG_CLK, "ENET1_IPG" },
37 { IMX8QXP_ENET1_REF_DIV, "ENET1_REF" },
38 { IMX8QXP_ENET1_PTP_CLK, "ENET1_PTP" },
39 };
40
41 int num_clks = ARRAY_SIZE(imx8_clk_names);
42 #endif
43
imx8_clk_get_rate(struct clk * clk)44 ulong imx8_clk_get_rate(struct clk *clk)
45 {
46 sc_pm_clk_t pm_clk;
47 ulong rate;
48 u16 resource;
49 int ret;
50
51 debug("%s(#%lu)\n", __func__, clk->id);
52
53 switch (clk->id) {
54 case IMX8QXP_A35_DIV:
55 resource = SC_R_A35;
56 pm_clk = SC_PM_CLK_CPU;
57 break;
58 case IMX8QXP_I2C0_CLK:
59 resource = SC_R_I2C_0;
60 pm_clk = SC_PM_CLK_PER;
61 break;
62 case IMX8QXP_I2C1_CLK:
63 resource = SC_R_I2C_1;
64 pm_clk = SC_PM_CLK_PER;
65 break;
66 case IMX8QXP_I2C2_CLK:
67 resource = SC_R_I2C_2;
68 pm_clk = SC_PM_CLK_PER;
69 break;
70 case IMX8QXP_I2C3_CLK:
71 resource = SC_R_I2C_3;
72 pm_clk = SC_PM_CLK_PER;
73 break;
74 case IMX8QXP_SDHC0_IPG_CLK:
75 case IMX8QXP_SDHC0_CLK:
76 case IMX8QXP_SDHC0_DIV:
77 resource = SC_R_SDHC_0;
78 pm_clk = SC_PM_CLK_PER;
79 break;
80 case IMX8QXP_SDHC1_IPG_CLK:
81 case IMX8QXP_SDHC1_CLK:
82 case IMX8QXP_SDHC1_DIV:
83 resource = SC_R_SDHC_1;
84 pm_clk = SC_PM_CLK_PER;
85 break;
86 case IMX8QXP_UART0_IPG_CLK:
87 case IMX8QXP_UART0_CLK:
88 resource = SC_R_UART_0;
89 pm_clk = SC_PM_CLK_PER;
90 break;
91 case IMX8QXP_UART1_CLK:
92 resource = SC_R_UART_1;
93 pm_clk = SC_PM_CLK_PER;
94 break;
95 case IMX8QXP_UART2_CLK:
96 resource = SC_R_UART_2;
97 pm_clk = SC_PM_CLK_PER;
98 break;
99 case IMX8QXP_UART3_CLK:
100 resource = SC_R_UART_3;
101 pm_clk = SC_PM_CLK_PER;
102 break;
103 case IMX8QXP_ENET0_IPG_CLK:
104 case IMX8QXP_ENET0_AHB_CLK:
105 case IMX8QXP_ENET0_REF_DIV:
106 case IMX8QXP_ENET0_PTP_CLK:
107 resource = SC_R_ENET_0;
108 pm_clk = SC_PM_CLK_PER;
109 break;
110 case IMX8QXP_ENET1_IPG_CLK:
111 case IMX8QXP_ENET1_AHB_CLK:
112 case IMX8QXP_ENET1_REF_DIV:
113 case IMX8QXP_ENET1_PTP_CLK:
114 resource = SC_R_ENET_1;
115 pm_clk = SC_PM_CLK_PER;
116 break;
117 default:
118 if (clk->id < IMX8QXP_UART0_IPG_CLK ||
119 clk->id >= IMX8QXP_CLK_END) {
120 printf("%s(Invalid clk ID #%lu)\n",
121 __func__, clk->id);
122 return -EINVAL;
123 }
124 return -ENOTSUPP;
125 };
126
127 ret = sc_pm_get_clock_rate(-1, resource, pm_clk,
128 (sc_pm_clock_rate_t *)&rate);
129 if (ret) {
130 printf("%s err %d\n", __func__, ret);
131 return ret;
132 }
133
134 return rate;
135 }
136
imx8_clk_set_rate(struct clk * clk,unsigned long rate)137 ulong imx8_clk_set_rate(struct clk *clk, unsigned long rate)
138 {
139 sc_pm_clk_t pm_clk;
140 u32 new_rate = rate;
141 u16 resource;
142 int ret;
143
144 debug("%s(#%lu), rate: %lu\n", __func__, clk->id, rate);
145
146 switch (clk->id) {
147 case IMX8QXP_I2C0_CLK:
148 resource = SC_R_I2C_0;
149 pm_clk = SC_PM_CLK_PER;
150 break;
151 case IMX8QXP_I2C1_CLK:
152 resource = SC_R_I2C_1;
153 pm_clk = SC_PM_CLK_PER;
154 break;
155 case IMX8QXP_I2C2_CLK:
156 resource = SC_R_I2C_2;
157 pm_clk = SC_PM_CLK_PER;
158 break;
159 case IMX8QXP_I2C3_CLK:
160 resource = SC_R_I2C_3;
161 pm_clk = SC_PM_CLK_PER;
162 break;
163 case IMX8QXP_UART0_CLK:
164 resource = SC_R_UART_0;
165 pm_clk = SC_PM_CLK_PER;
166 break;
167 case IMX8QXP_UART1_CLK:
168 resource = SC_R_UART_1;
169 pm_clk = SC_PM_CLK_PER;
170 break;
171 case IMX8QXP_UART2_CLK:
172 resource = SC_R_UART_2;
173 pm_clk = SC_PM_CLK_PER;
174 break;
175 case IMX8QXP_UART3_CLK:
176 resource = SC_R_UART_3;
177 pm_clk = SC_PM_CLK_PER;
178 break;
179 case IMX8QXP_SDHC0_IPG_CLK:
180 case IMX8QXP_SDHC0_CLK:
181 case IMX8QXP_SDHC0_DIV:
182 resource = SC_R_SDHC_0;
183 pm_clk = SC_PM_CLK_PER;
184 break;
185 case IMX8QXP_SDHC1_SEL:
186 case IMX8QXP_SDHC0_SEL:
187 return 0;
188 case IMX8QXP_SDHC1_IPG_CLK:
189 case IMX8QXP_SDHC1_CLK:
190 case IMX8QXP_SDHC1_DIV:
191 resource = SC_R_SDHC_1;
192 pm_clk = SC_PM_CLK_PER;
193 break;
194 case IMX8QXP_ENET0_IPG_CLK:
195 case IMX8QXP_ENET0_AHB_CLK:
196 case IMX8QXP_ENET0_REF_DIV:
197 case IMX8QXP_ENET0_PTP_CLK:
198 resource = SC_R_ENET_0;
199 pm_clk = SC_PM_CLK_PER;
200 break;
201 case IMX8QXP_ENET1_IPG_CLK:
202 case IMX8QXP_ENET1_AHB_CLK:
203 case IMX8QXP_ENET1_REF_DIV:
204 case IMX8QXP_ENET1_PTP_CLK:
205 resource = SC_R_ENET_1;
206 pm_clk = SC_PM_CLK_PER;
207 break;
208 default:
209 if (clk->id < IMX8QXP_UART0_IPG_CLK ||
210 clk->id >= IMX8QXP_CLK_END) {
211 printf("%s(Invalid clk ID #%lu)\n",
212 __func__, clk->id);
213 return -EINVAL;
214 }
215 return -ENOTSUPP;
216 };
217
218 ret = sc_pm_set_clock_rate(-1, resource, pm_clk, &new_rate);
219 if (ret) {
220 printf("%s err %d\n", __func__, ret);
221 return ret;
222 }
223
224 return new_rate;
225 }
226
__imx8_clk_enable(struct clk * clk,bool enable)227 int __imx8_clk_enable(struct clk *clk, bool enable)
228 {
229 sc_pm_clk_t pm_clk;
230 u16 resource;
231 int ret;
232
233 debug("%s(#%lu)\n", __func__, clk->id);
234
235 switch (clk->id) {
236 case IMX8QXP_I2C0_CLK:
237 resource = SC_R_I2C_0;
238 pm_clk = SC_PM_CLK_PER;
239 break;
240 case IMX8QXP_I2C1_CLK:
241 resource = SC_R_I2C_1;
242 pm_clk = SC_PM_CLK_PER;
243 break;
244 case IMX8QXP_I2C2_CLK:
245 resource = SC_R_I2C_2;
246 pm_clk = SC_PM_CLK_PER;
247 break;
248 case IMX8QXP_I2C3_CLK:
249 resource = SC_R_I2C_3;
250 pm_clk = SC_PM_CLK_PER;
251 break;
252 case IMX8QXP_UART0_CLK:
253 resource = SC_R_UART_0;
254 pm_clk = SC_PM_CLK_PER;
255 break;
256 case IMX8QXP_UART1_CLK:
257 resource = SC_R_UART_1;
258 pm_clk = SC_PM_CLK_PER;
259 break;
260 case IMX8QXP_UART2_CLK:
261 resource = SC_R_UART_2;
262 pm_clk = SC_PM_CLK_PER;
263 break;
264 case IMX8QXP_UART3_CLK:
265 resource = SC_R_UART_3;
266 pm_clk = SC_PM_CLK_PER;
267 break;
268 case IMX8QXP_SDHC0_IPG_CLK:
269 case IMX8QXP_SDHC0_CLK:
270 case IMX8QXP_SDHC0_DIV:
271 resource = SC_R_SDHC_0;
272 pm_clk = SC_PM_CLK_PER;
273 break;
274 case IMX8QXP_SDHC1_IPG_CLK:
275 case IMX8QXP_SDHC1_CLK:
276 case IMX8QXP_SDHC1_DIV:
277 resource = SC_R_SDHC_1;
278 pm_clk = SC_PM_CLK_PER;
279 break;
280 case IMX8QXP_ENET0_IPG_CLK:
281 case IMX8QXP_ENET0_AHB_CLK:
282 case IMX8QXP_ENET0_REF_DIV:
283 case IMX8QXP_ENET0_PTP_CLK:
284 resource = SC_R_ENET_0;
285 pm_clk = SC_PM_CLK_PER;
286 break;
287 case IMX8QXP_ENET1_IPG_CLK:
288 case IMX8QXP_ENET1_AHB_CLK:
289 case IMX8QXP_ENET1_REF_DIV:
290 case IMX8QXP_ENET1_PTP_CLK:
291 resource = SC_R_ENET_1;
292 pm_clk = SC_PM_CLK_PER;
293 break;
294 default:
295 if (clk->id < IMX8QXP_UART0_IPG_CLK ||
296 clk->id >= IMX8QXP_CLK_END) {
297 printf("%s(Invalid clk ID #%lu)\n",
298 __func__, clk->id);
299 return -EINVAL;
300 }
301 return -ENOTSUPP;
302 }
303
304 ret = sc_pm_clock_enable(-1, resource, pm_clk, enable, 0);
305 if (ret) {
306 printf("%s err %d\n", __func__, ret);
307 return ret;
308 }
309
310 return 0;
311 }
312