2 * Author: Daniel Thompson <daniel.thompson@linaro.org>
4 * Inspired by clk-asm9260.c .
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
19 #include <linux/clk-provider.h>
20 #include <linux/err.h>
22 #include <linux/iopoll.h>
23 #include <linux/ioport.h>
24 #include <linux/slab.h>
25 #include <linux/spinlock.h>
27 #include <linux/of_address.h>
28 #include <linux/regmap.h>
29 #include <linux/mfd/syscon.h>
32 * Include list of clocks wich are not derived from system clock (SYSCLOCK)
33 * The index of these clocks is the secondary index of DT bindings
36 #include <dt-bindings/clock/stm32fx-clock.h>
38 #define STM32F4_RCC_CR 0x00
39 #define STM32F4_RCC_PLLCFGR 0x04
40 #define STM32F4_RCC_CFGR 0x08
41 #define STM32F4_RCC_AHB1ENR 0x30
42 #define STM32F4_RCC_AHB2ENR 0x34
43 #define STM32F4_RCC_AHB3ENR 0x38
44 #define STM32F4_RCC_APB1ENR 0x40
45 #define STM32F4_RCC_APB2ENR 0x44
46 #define STM32F4_RCC_BDCR 0x70
47 #define STM32F4_RCC_CSR 0x74
48 #define STM32F4_RCC_PLLI2SCFGR 0x84
49 #define STM32F4_RCC_PLLSAICFGR 0x88
50 #define STM32F4_RCC_DCKCFGR 0x8c
51 #define STM32F7_RCC_DCKCFGR2 0x90
58 struct stm32f4_gate_data
{
62 const char *parent_name
;
66 static const struct stm32f4_gate_data stm32f429_gates
[] __initconst
= {
67 { STM32F4_RCC_AHB1ENR
, 0, "gpioa", "ahb_div" },
68 { STM32F4_RCC_AHB1ENR
, 1, "gpiob", "ahb_div" },
69 { STM32F4_RCC_AHB1ENR
, 2, "gpioc", "ahb_div" },
70 { STM32F4_RCC_AHB1ENR
, 3, "gpiod", "ahb_div" },
71 { STM32F4_RCC_AHB1ENR
, 4, "gpioe", "ahb_div" },
72 { STM32F4_RCC_AHB1ENR
, 5, "gpiof", "ahb_div" },
73 { STM32F4_RCC_AHB1ENR
, 6, "gpiog", "ahb_div" },
74 { STM32F4_RCC_AHB1ENR
, 7, "gpioh", "ahb_div" },
75 { STM32F4_RCC_AHB1ENR
, 8, "gpioi", "ahb_div" },
76 { STM32F4_RCC_AHB1ENR
, 9, "gpioj", "ahb_div" },
77 { STM32F4_RCC_AHB1ENR
, 10, "gpiok", "ahb_div" },
78 { STM32F4_RCC_AHB1ENR
, 12, "crc", "ahb_div" },
79 { STM32F4_RCC_AHB1ENR
, 18, "bkpsra", "ahb_div" },
80 { STM32F4_RCC_AHB1ENR
, 20, "ccmdatam", "ahb_div" },
81 { STM32F4_RCC_AHB1ENR
, 21, "dma1", "ahb_div" },
82 { STM32F4_RCC_AHB1ENR
, 22, "dma2", "ahb_div" },
83 { STM32F4_RCC_AHB1ENR
, 23, "dma2d", "ahb_div" },
84 { STM32F4_RCC_AHB1ENR
, 25, "ethmac", "ahb_div" },
85 { STM32F4_RCC_AHB1ENR
, 26, "ethmactx", "ahb_div" },
86 { STM32F4_RCC_AHB1ENR
, 27, "ethmacrx", "ahb_div" },
87 { STM32F4_RCC_AHB1ENR
, 28, "ethmacptp", "ahb_div" },
88 { STM32F4_RCC_AHB1ENR
, 29, "otghs", "ahb_div" },
89 { STM32F4_RCC_AHB1ENR
, 30, "otghsulpi", "ahb_div" },
91 { STM32F4_RCC_AHB2ENR
, 0, "dcmi", "ahb_div" },
92 { STM32F4_RCC_AHB2ENR
, 4, "cryp", "ahb_div" },
93 { STM32F4_RCC_AHB2ENR
, 5, "hash", "ahb_div" },
94 { STM32F4_RCC_AHB2ENR
, 6, "rng", "pll48" },
95 { STM32F4_RCC_AHB2ENR
, 7, "otgfs", "pll48" },
97 { STM32F4_RCC_AHB3ENR
, 0, "fmc", "ahb_div",
100 { STM32F4_RCC_APB1ENR
, 0, "tim2", "apb1_mul" },
101 { STM32F4_RCC_APB1ENR
, 1, "tim3", "apb1_mul" },
102 { STM32F4_RCC_APB1ENR
, 2, "tim4", "apb1_mul" },
103 { STM32F4_RCC_APB1ENR
, 3, "tim5", "apb1_mul" },
104 { STM32F4_RCC_APB1ENR
, 4, "tim6", "apb1_mul" },
105 { STM32F4_RCC_APB1ENR
, 5, "tim7", "apb1_mul" },
106 { STM32F4_RCC_APB1ENR
, 6, "tim12", "apb1_mul" },
107 { STM32F4_RCC_APB1ENR
, 7, "tim13", "apb1_mul" },
108 { STM32F4_RCC_APB1ENR
, 8, "tim14", "apb1_mul" },
109 { STM32F4_RCC_APB1ENR
, 11, "wwdg", "apb1_div" },
110 { STM32F4_RCC_APB1ENR
, 14, "spi2", "apb1_div" },
111 { STM32F4_RCC_APB1ENR
, 15, "spi3", "apb1_div" },
112 { STM32F4_RCC_APB1ENR
, 17, "uart2", "apb1_div" },
113 { STM32F4_RCC_APB1ENR
, 18, "uart3", "apb1_div" },
114 { STM32F4_RCC_APB1ENR
, 19, "uart4", "apb1_div" },
115 { STM32F4_RCC_APB1ENR
, 20, "uart5", "apb1_div" },
116 { STM32F4_RCC_APB1ENR
, 21, "i2c1", "apb1_div" },
117 { STM32F4_RCC_APB1ENR
, 22, "i2c2", "apb1_div" },
118 { STM32F4_RCC_APB1ENR
, 23, "i2c3", "apb1_div" },
119 { STM32F4_RCC_APB1ENR
, 25, "can1", "apb1_div" },
120 { STM32F4_RCC_APB1ENR
, 26, "can2", "apb1_div" },
121 { STM32F4_RCC_APB1ENR
, 28, "pwr", "apb1_div" },
122 { STM32F4_RCC_APB1ENR
, 29, "dac", "apb1_div" },
123 { STM32F4_RCC_APB1ENR
, 30, "uart7", "apb1_div" },
124 { STM32F4_RCC_APB1ENR
, 31, "uart8", "apb1_div" },
126 { STM32F4_RCC_APB2ENR
, 0, "tim1", "apb2_mul" },
127 { STM32F4_RCC_APB2ENR
, 1, "tim8", "apb2_mul" },
128 { STM32F4_RCC_APB2ENR
, 4, "usart1", "apb2_div" },
129 { STM32F4_RCC_APB2ENR
, 5, "usart6", "apb2_div" },
130 { STM32F4_RCC_APB2ENR
, 8, "adc1", "apb2_div" },
131 { STM32F4_RCC_APB2ENR
, 9, "adc2", "apb2_div" },
132 { STM32F4_RCC_APB2ENR
, 10, "adc3", "apb2_div" },
133 { STM32F4_RCC_APB2ENR
, 11, "sdio", "pll48" },
134 { STM32F4_RCC_APB2ENR
, 12, "spi1", "apb2_div" },
135 { STM32F4_RCC_APB2ENR
, 13, "spi4", "apb2_div" },
136 { STM32F4_RCC_APB2ENR
, 14, "syscfg", "apb2_div" },
137 { STM32F4_RCC_APB2ENR
, 16, "tim9", "apb2_mul" },
138 { STM32F4_RCC_APB2ENR
, 17, "tim10", "apb2_mul" },
139 { STM32F4_RCC_APB2ENR
, 18, "tim11", "apb2_mul" },
140 { STM32F4_RCC_APB2ENR
, 20, "spi5", "apb2_div" },
141 { STM32F4_RCC_APB2ENR
, 21, "spi6", "apb2_div" },
142 { STM32F4_RCC_APB2ENR
, 22, "sai1", "apb2_div" },
143 { STM32F4_RCC_APB2ENR
, 26, "ltdc", "apb2_div" },
146 static const struct stm32f4_gate_data stm32f469_gates
[] __initconst
= {
147 { STM32F4_RCC_AHB1ENR
, 0, "gpioa", "ahb_div" },
148 { STM32F4_RCC_AHB1ENR
, 1, "gpiob", "ahb_div" },
149 { STM32F4_RCC_AHB1ENR
, 2, "gpioc", "ahb_div" },
150 { STM32F4_RCC_AHB1ENR
, 3, "gpiod", "ahb_div" },
151 { STM32F4_RCC_AHB1ENR
, 4, "gpioe", "ahb_div" },
152 { STM32F4_RCC_AHB1ENR
, 5, "gpiof", "ahb_div" },
153 { STM32F4_RCC_AHB1ENR
, 6, "gpiog", "ahb_div" },
154 { STM32F4_RCC_AHB1ENR
, 7, "gpioh", "ahb_div" },
155 { STM32F4_RCC_AHB1ENR
, 8, "gpioi", "ahb_div" },
156 { STM32F4_RCC_AHB1ENR
, 9, "gpioj", "ahb_div" },
157 { STM32F4_RCC_AHB1ENR
, 10, "gpiok", "ahb_div" },
158 { STM32F4_RCC_AHB1ENR
, 12, "crc", "ahb_div" },
159 { STM32F4_RCC_AHB1ENR
, 18, "bkpsra", "ahb_div" },
160 { STM32F4_RCC_AHB1ENR
, 20, "ccmdatam", "ahb_div" },
161 { STM32F4_RCC_AHB1ENR
, 21, "dma1", "ahb_div" },
162 { STM32F4_RCC_AHB1ENR
, 22, "dma2", "ahb_div" },
163 { STM32F4_RCC_AHB1ENR
, 23, "dma2d", "ahb_div" },
164 { STM32F4_RCC_AHB1ENR
, 25, "ethmac", "ahb_div" },
165 { STM32F4_RCC_AHB1ENR
, 26, "ethmactx", "ahb_div" },
166 { STM32F4_RCC_AHB1ENR
, 27, "ethmacrx", "ahb_div" },
167 { STM32F4_RCC_AHB1ENR
, 28, "ethmacptp", "ahb_div" },
168 { STM32F4_RCC_AHB1ENR
, 29, "otghs", "ahb_div" },
169 { STM32F4_RCC_AHB1ENR
, 30, "otghsulpi", "ahb_div" },
171 { STM32F4_RCC_AHB2ENR
, 0, "dcmi", "ahb_div" },
172 { STM32F4_RCC_AHB2ENR
, 4, "cryp", "ahb_div" },
173 { STM32F4_RCC_AHB2ENR
, 5, "hash", "ahb_div" },
174 { STM32F4_RCC_AHB2ENR
, 6, "rng", "pll48" },
175 { STM32F4_RCC_AHB2ENR
, 7, "otgfs", "pll48" },
177 { STM32F4_RCC_AHB3ENR
, 0, "fmc", "ahb_div",
179 { STM32F4_RCC_AHB3ENR
, 1, "qspi", "ahb_div",
182 { STM32F4_RCC_APB1ENR
, 0, "tim2", "apb1_mul" },
183 { STM32F4_RCC_APB1ENR
, 1, "tim3", "apb1_mul" },
184 { STM32F4_RCC_APB1ENR
, 2, "tim4", "apb1_mul" },
185 { STM32F4_RCC_APB1ENR
, 3, "tim5", "apb1_mul" },
186 { STM32F4_RCC_APB1ENR
, 4, "tim6", "apb1_mul" },
187 { STM32F4_RCC_APB1ENR
, 5, "tim7", "apb1_mul" },
188 { STM32F4_RCC_APB1ENR
, 6, "tim12", "apb1_mul" },
189 { STM32F4_RCC_APB1ENR
, 7, "tim13", "apb1_mul" },
190 { STM32F4_RCC_APB1ENR
, 8, "tim14", "apb1_mul" },
191 { STM32F4_RCC_APB1ENR
, 11, "wwdg", "apb1_div" },
192 { STM32F4_RCC_APB1ENR
, 14, "spi2", "apb1_div" },
193 { STM32F4_RCC_APB1ENR
, 15, "spi3", "apb1_div" },
194 { STM32F4_RCC_APB1ENR
, 17, "uart2", "apb1_div" },
195 { STM32F4_RCC_APB1ENR
, 18, "uart3", "apb1_div" },
196 { STM32F4_RCC_APB1ENR
, 19, "uart4", "apb1_div" },
197 { STM32F4_RCC_APB1ENR
, 20, "uart5", "apb1_div" },
198 { STM32F4_RCC_APB1ENR
, 21, "i2c1", "apb1_div" },
199 { STM32F4_RCC_APB1ENR
, 22, "i2c2", "apb1_div" },
200 { STM32F4_RCC_APB1ENR
, 23, "i2c3", "apb1_div" },
201 { STM32F4_RCC_APB1ENR
, 25, "can1", "apb1_div" },
202 { STM32F4_RCC_APB1ENR
, 26, "can2", "apb1_div" },
203 { STM32F4_RCC_APB1ENR
, 28, "pwr", "apb1_div" },
204 { STM32F4_RCC_APB1ENR
, 29, "dac", "apb1_div" },
205 { STM32F4_RCC_APB1ENR
, 30, "uart7", "apb1_div" },
206 { STM32F4_RCC_APB1ENR
, 31, "uart8", "apb1_div" },
208 { STM32F4_RCC_APB2ENR
, 0, "tim1", "apb2_mul" },
209 { STM32F4_RCC_APB2ENR
, 1, "tim8", "apb2_mul" },
210 { STM32F4_RCC_APB2ENR
, 4, "usart1", "apb2_div" },
211 { STM32F4_RCC_APB2ENR
, 5, "usart6", "apb2_div" },
212 { STM32F4_RCC_APB2ENR
, 8, "adc1", "apb2_div" },
213 { STM32F4_RCC_APB2ENR
, 9, "adc2", "apb2_div" },
214 { STM32F4_RCC_APB2ENR
, 10, "adc3", "apb2_div" },
215 { STM32F4_RCC_APB2ENR
, 11, "sdio", "sdmux" },
216 { STM32F4_RCC_APB2ENR
, 12, "spi1", "apb2_div" },
217 { STM32F4_RCC_APB2ENR
, 13, "spi4", "apb2_div" },
218 { STM32F4_RCC_APB2ENR
, 14, "syscfg", "apb2_div" },
219 { STM32F4_RCC_APB2ENR
, 16, "tim9", "apb2_mul" },
220 { STM32F4_RCC_APB2ENR
, 17, "tim10", "apb2_mul" },
221 { STM32F4_RCC_APB2ENR
, 18, "tim11", "apb2_mul" },
222 { STM32F4_RCC_APB2ENR
, 20, "spi5", "apb2_div" },
223 { STM32F4_RCC_APB2ENR
, 21, "spi6", "apb2_div" },
224 { STM32F4_RCC_APB2ENR
, 22, "sai1", "apb2_div" },
225 { STM32F4_RCC_APB2ENR
, 26, "ltdc", "apb2_div" },
228 static const struct stm32f4_gate_data stm32f746_gates
[] __initconst
= {
229 { STM32F4_RCC_AHB1ENR
, 0, "gpioa", "ahb_div" },
230 { STM32F4_RCC_AHB1ENR
, 1, "gpiob", "ahb_div" },
231 { STM32F4_RCC_AHB1ENR
, 2, "gpioc", "ahb_div" },
232 { STM32F4_RCC_AHB1ENR
, 3, "gpiod", "ahb_div" },
233 { STM32F4_RCC_AHB1ENR
, 4, "gpioe", "ahb_div" },
234 { STM32F4_RCC_AHB1ENR
, 5, "gpiof", "ahb_div" },
235 { STM32F4_RCC_AHB1ENR
, 6, "gpiog", "ahb_div" },
236 { STM32F4_RCC_AHB1ENR
, 7, "gpioh", "ahb_div" },
237 { STM32F4_RCC_AHB1ENR
, 8, "gpioi", "ahb_div" },
238 { STM32F4_RCC_AHB1ENR
, 9, "gpioj", "ahb_div" },
239 { STM32F4_RCC_AHB1ENR
, 10, "gpiok", "ahb_div" },
240 { STM32F4_RCC_AHB1ENR
, 12, "crc", "ahb_div" },
241 { STM32F4_RCC_AHB1ENR
, 18, "bkpsra", "ahb_div" },
242 { STM32F4_RCC_AHB1ENR
, 20, "dtcmram", "ahb_div" },
243 { STM32F4_RCC_AHB1ENR
, 21, "dma1", "ahb_div" },
244 { STM32F4_RCC_AHB1ENR
, 22, "dma2", "ahb_div" },
245 { STM32F4_RCC_AHB1ENR
, 23, "dma2d", "ahb_div" },
246 { STM32F4_RCC_AHB1ENR
, 25, "ethmac", "ahb_div" },
247 { STM32F4_RCC_AHB1ENR
, 26, "ethmactx", "ahb_div" },
248 { STM32F4_RCC_AHB1ENR
, 27, "ethmacrx", "ahb_div" },
249 { STM32F4_RCC_AHB1ENR
, 28, "ethmacptp", "ahb_div" },
250 { STM32F4_RCC_AHB1ENR
, 29, "otghs", "ahb_div" },
251 { STM32F4_RCC_AHB1ENR
, 30, "otghsulpi", "ahb_div" },
253 { STM32F4_RCC_AHB2ENR
, 0, "dcmi", "ahb_div" },
254 { STM32F4_RCC_AHB2ENR
, 4, "cryp", "ahb_div" },
255 { STM32F4_RCC_AHB2ENR
, 5, "hash", "ahb_div" },
256 { STM32F4_RCC_AHB2ENR
, 6, "rng", "pll48" },
257 { STM32F4_RCC_AHB2ENR
, 7, "otgfs", "pll48" },
259 { STM32F4_RCC_AHB3ENR
, 0, "fmc", "ahb_div",
261 { STM32F4_RCC_AHB3ENR
, 1, "qspi", "ahb_div",
264 { STM32F4_RCC_APB1ENR
, 0, "tim2", "apb1_mul" },
265 { STM32F4_RCC_APB1ENR
, 1, "tim3", "apb1_mul" },
266 { STM32F4_RCC_APB1ENR
, 2, "tim4", "apb1_mul" },
267 { STM32F4_RCC_APB1ENR
, 3, "tim5", "apb1_mul" },
268 { STM32F4_RCC_APB1ENR
, 4, "tim6", "apb1_mul" },
269 { STM32F4_RCC_APB1ENR
, 5, "tim7", "apb1_mul" },
270 { STM32F4_RCC_APB1ENR
, 6, "tim12", "apb1_mul" },
271 { STM32F4_RCC_APB1ENR
, 7, "tim13", "apb1_mul" },
272 { STM32F4_RCC_APB1ENR
, 8, "tim14", "apb1_mul" },
273 { STM32F4_RCC_APB1ENR
, 11, "wwdg", "apb1_div" },
274 { STM32F4_RCC_APB1ENR
, 14, "spi2", "apb1_div" },
275 { STM32F4_RCC_APB1ENR
, 15, "spi3", "apb1_div" },
276 { STM32F4_RCC_APB1ENR
, 16, "spdifrx", "apb1_div" },
277 { STM32F4_RCC_APB1ENR
, 25, "can1", "apb1_div" },
278 { STM32F4_RCC_APB1ENR
, 26, "can2", "apb1_div" },
279 { STM32F4_RCC_APB1ENR
, 27, "cec", "apb1_div" },
280 { STM32F4_RCC_APB1ENR
, 28, "pwr", "apb1_div" },
281 { STM32F4_RCC_APB1ENR
, 29, "dac", "apb1_div" },
283 { STM32F4_RCC_APB2ENR
, 0, "tim1", "apb2_mul" },
284 { STM32F4_RCC_APB2ENR
, 1, "tim8", "apb2_mul" },
285 { STM32F4_RCC_APB2ENR
, 7, "sdmmc2", "sdmux" },
286 { STM32F4_RCC_APB2ENR
, 8, "adc1", "apb2_div" },
287 { STM32F4_RCC_APB2ENR
, 9, "adc2", "apb2_div" },
288 { STM32F4_RCC_APB2ENR
, 10, "adc3", "apb2_div" },
289 { STM32F4_RCC_APB2ENR
, 11, "sdmmc", "sdmux" },
290 { STM32F4_RCC_APB2ENR
, 12, "spi1", "apb2_div" },
291 { STM32F4_RCC_APB2ENR
, 13, "spi4", "apb2_div" },
292 { STM32F4_RCC_APB2ENR
, 14, "syscfg", "apb2_div" },
293 { STM32F4_RCC_APB2ENR
, 16, "tim9", "apb2_mul" },
294 { STM32F4_RCC_APB2ENR
, 17, "tim10", "apb2_mul" },
295 { STM32F4_RCC_APB2ENR
, 18, "tim11", "apb2_mul" },
296 { STM32F4_RCC_APB2ENR
, 20, "spi5", "apb2_div" },
297 { STM32F4_RCC_APB2ENR
, 21, "spi6", "apb2_div" },
298 { STM32F4_RCC_APB2ENR
, 22, "sai1", "apb2_div" },
299 { STM32F4_RCC_APB2ENR
, 23, "sai2", "apb2_div" },
300 { STM32F4_RCC_APB2ENR
, 26, "ltdc", "apb2_div" },
303 static const struct stm32f4_gate_data stm32f769_gates
[] __initconst
= {
304 { STM32F4_RCC_AHB1ENR
, 0, "gpioa", "ahb_div" },
305 { STM32F4_RCC_AHB1ENR
, 1, "gpiob", "ahb_div" },
306 { STM32F4_RCC_AHB1ENR
, 2, "gpioc", "ahb_div" },
307 { STM32F4_RCC_AHB1ENR
, 3, "gpiod", "ahb_div" },
308 { STM32F4_RCC_AHB1ENR
, 4, "gpioe", "ahb_div" },
309 { STM32F4_RCC_AHB1ENR
, 5, "gpiof", "ahb_div" },
310 { STM32F4_RCC_AHB1ENR
, 6, "gpiog", "ahb_div" },
311 { STM32F4_RCC_AHB1ENR
, 7, "gpioh", "ahb_div" },
312 { STM32F4_RCC_AHB1ENR
, 8, "gpioi", "ahb_div" },
313 { STM32F4_RCC_AHB1ENR
, 9, "gpioj", "ahb_div" },
314 { STM32F4_RCC_AHB1ENR
, 10, "gpiok", "ahb_div" },
315 { STM32F4_RCC_AHB1ENR
, 12, "crc", "ahb_div" },
316 { STM32F4_RCC_AHB1ENR
, 18, "bkpsra", "ahb_div" },
317 { STM32F4_RCC_AHB1ENR
, 20, "dtcmram", "ahb_div" },
318 { STM32F4_RCC_AHB1ENR
, 21, "dma1", "ahb_div" },
319 { STM32F4_RCC_AHB1ENR
, 22, "dma2", "ahb_div" },
320 { STM32F4_RCC_AHB1ENR
, 23, "dma2d", "ahb_div" },
321 { STM32F4_RCC_AHB1ENR
, 25, "ethmac", "ahb_div" },
322 { STM32F4_RCC_AHB1ENR
, 26, "ethmactx", "ahb_div" },
323 { STM32F4_RCC_AHB1ENR
, 27, "ethmacrx", "ahb_div" },
324 { STM32F4_RCC_AHB1ENR
, 28, "ethmacptp", "ahb_div" },
325 { STM32F4_RCC_AHB1ENR
, 29, "otghs", "ahb_div" },
326 { STM32F4_RCC_AHB1ENR
, 30, "otghsulpi", "ahb_div" },
328 { STM32F4_RCC_AHB2ENR
, 0, "dcmi", "ahb_div" },
329 { STM32F4_RCC_AHB2ENR
, 1, "jpeg", "ahb_div" },
330 { STM32F4_RCC_AHB2ENR
, 4, "cryp", "ahb_div" },
331 { STM32F4_RCC_AHB2ENR
, 5, "hash", "ahb_div" },
332 { STM32F4_RCC_AHB2ENR
, 6, "rng", "pll48" },
333 { STM32F4_RCC_AHB2ENR
, 7, "otgfs", "pll48" },
335 { STM32F4_RCC_AHB3ENR
, 0, "fmc", "ahb_div",
337 { STM32F4_RCC_AHB3ENR
, 1, "qspi", "ahb_div",
340 { STM32F4_RCC_APB1ENR
, 0, "tim2", "apb1_mul" },
341 { STM32F4_RCC_APB1ENR
, 1, "tim3", "apb1_mul" },
342 { STM32F4_RCC_APB1ENR
, 2, "tim4", "apb1_mul" },
343 { STM32F4_RCC_APB1ENR
, 3, "tim5", "apb1_mul" },
344 { STM32F4_RCC_APB1ENR
, 4, "tim6", "apb1_mul" },
345 { STM32F4_RCC_APB1ENR
, 5, "tim7", "apb1_mul" },
346 { STM32F4_RCC_APB1ENR
, 6, "tim12", "apb1_mul" },
347 { STM32F4_RCC_APB1ENR
, 7, "tim13", "apb1_mul" },
348 { STM32F4_RCC_APB1ENR
, 8, "tim14", "apb1_mul" },
349 { STM32F4_RCC_APB1ENR
, 10, "rtcapb", "apb1_mul" },
350 { STM32F4_RCC_APB1ENR
, 11, "wwdg", "apb1_div" },
351 { STM32F4_RCC_APB1ENR
, 13, "can3", "apb1_div" },
352 { STM32F4_RCC_APB1ENR
, 14, "spi2", "apb1_div" },
353 { STM32F4_RCC_APB1ENR
, 15, "spi3", "apb1_div" },
354 { STM32F4_RCC_APB1ENR
, 16, "spdifrx", "apb1_div" },
355 { STM32F4_RCC_APB1ENR
, 25, "can1", "apb1_div" },
356 { STM32F4_RCC_APB1ENR
, 26, "can2", "apb1_div" },
357 { STM32F4_RCC_APB1ENR
, 27, "cec", "apb1_div" },
358 { STM32F4_RCC_APB1ENR
, 28, "pwr", "apb1_div" },
359 { STM32F4_RCC_APB1ENR
, 29, "dac", "apb1_div" },
361 { STM32F4_RCC_APB2ENR
, 0, "tim1", "apb2_mul" },
362 { STM32F4_RCC_APB2ENR
, 1, "tim8", "apb2_mul" },
363 { STM32F4_RCC_APB2ENR
, 7, "sdmmc2", "sdmux2" },
364 { STM32F4_RCC_APB2ENR
, 8, "adc1", "apb2_div" },
365 { STM32F4_RCC_APB2ENR
, 9, "adc2", "apb2_div" },
366 { STM32F4_RCC_APB2ENR
, 10, "adc3", "apb2_div" },
367 { STM32F4_RCC_APB2ENR
, 11, "sdmmc1", "sdmux1" },
368 { STM32F4_RCC_APB2ENR
, 12, "spi1", "apb2_div" },
369 { STM32F4_RCC_APB2ENR
, 13, "spi4", "apb2_div" },
370 { STM32F4_RCC_APB2ENR
, 14, "syscfg", "apb2_div" },
371 { STM32F4_RCC_APB2ENR
, 16, "tim9", "apb2_mul" },
372 { STM32F4_RCC_APB2ENR
, 17, "tim10", "apb2_mul" },
373 { STM32F4_RCC_APB2ENR
, 18, "tim11", "apb2_mul" },
374 { STM32F4_RCC_APB2ENR
, 20, "spi5", "apb2_div" },
375 { STM32F4_RCC_APB2ENR
, 21, "spi6", "apb2_div" },
376 { STM32F4_RCC_APB2ENR
, 22, "sai1", "apb2_div" },
377 { STM32F4_RCC_APB2ENR
, 23, "sai2", "apb2_div" },
378 { STM32F4_RCC_APB2ENR
, 26, "ltdc", "apb2_div" },
379 { STM32F4_RCC_APB2ENR
, 30, "mdio", "apb2_div" },
383 * This bitmask tells us which bit offsets (0..192) on STM32F4[23]xxx
384 * have gate bits associated with them. Its combined hweight is 71.
386 #define MAX_GATE_MAP 3
388 static const u64 stm32f42xx_gate_map
[MAX_GATE_MAP
] = { 0x000000f17ef417ffull
,
389 0x0000000000000001ull
,
390 0x04777f33f6fec9ffull
};
392 static const u64 stm32f46xx_gate_map
[MAX_GATE_MAP
] = { 0x000000f17ef417ffull
,
393 0x0000000000000003ull
,
394 0x0c777f33f6fec9ffull
};
396 static const u64 stm32f746_gate_map
[MAX_GATE_MAP
] = { 0x000000f17ef417ffull
,
397 0x0000000000000003ull
,
398 0x04f77f833e01c9ffull
};
400 static const u64 stm32f769_gate_map
[MAX_GATE_MAP
] = { 0x000000f37ef417ffull
,
401 0x0000000000000003ull
,
402 0x44F77F833E01EDFFull
};
404 static const u64
*stm32f4_gate_map
;
406 static struct clk_hw
**clks
;
408 static DEFINE_SPINLOCK(stm32f4_clk_lock
);
409 static void __iomem
*base
;
411 static struct regmap
*pdrm
;
413 static int stm32fx_end_primary_clk
;
416 * "Multiplier" device for APBx clocks.
418 * The APBx dividers are power-of-two dividers and, if *not* running in 1:1
419 * mode, they also tap out the one of the low order state bits to run the
420 * timers. ST datasheets represent this feature as a (conditional) clock
428 #define to_clk_apb_mul(_hw) container_of(_hw, struct clk_apb_mul, hw)
430 static unsigned long clk_apb_mul_recalc_rate(struct clk_hw
*hw
,
431 unsigned long parent_rate
)
433 struct clk_apb_mul
*am
= to_clk_apb_mul(hw
);
435 if (readl(base
+ STM32F4_RCC_CFGR
) & BIT(am
->bit_idx
))
436 return parent_rate
* 2;
441 static long clk_apb_mul_round_rate(struct clk_hw
*hw
, unsigned long rate
,
442 unsigned long *prate
)
444 struct clk_apb_mul
*am
= to_clk_apb_mul(hw
);
445 unsigned long mult
= 1;
447 if (readl(base
+ STM32F4_RCC_CFGR
) & BIT(am
->bit_idx
))
450 if (clk_hw_get_flags(hw
) & CLK_SET_RATE_PARENT
) {
451 unsigned long best_parent
= rate
/ mult
;
453 *prate
= clk_hw_round_rate(clk_hw_get_parent(hw
), best_parent
);
456 return *prate
* mult
;
459 static int clk_apb_mul_set_rate(struct clk_hw
*hw
, unsigned long rate
,
460 unsigned long parent_rate
)
463 * We must report success but we can do so unconditionally because
464 * clk_apb_mul_round_rate returns values that ensure this call is a
471 static const struct clk_ops clk_apb_mul_factor_ops
= {
472 .round_rate
= clk_apb_mul_round_rate
,
473 .set_rate
= clk_apb_mul_set_rate
,
474 .recalc_rate
= clk_apb_mul_recalc_rate
,
477 static struct clk
*clk_register_apb_mul(struct device
*dev
, const char *name
,
478 const char *parent_name
,
479 unsigned long flags
, u8 bit_idx
)
481 struct clk_apb_mul
*am
;
482 struct clk_init_data init
;
485 am
= kzalloc(sizeof(*am
), GFP_KERNEL
);
487 return ERR_PTR(-ENOMEM
);
489 am
->bit_idx
= bit_idx
;
493 init
.ops
= &clk_apb_mul_factor_ops
;
495 init
.parent_names
= &parent_name
;
496 init
.num_parents
= 1;
498 clk
= clk_register(dev
, &am
->hw
);
512 static const struct clk_div_table pll_divp_table
[] = {
513 { 0, 2 }, { 1, 4 }, { 2, 6 }, { 3, 8 }, { 0 }
516 static const struct clk_div_table pll_divq_table
[] = {
517 { 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 }, { 7, 7 },
518 { 8, 8 }, { 9, 9 }, { 10, 10 }, { 11, 11 }, { 12, 12 }, { 13, 13 },
519 { 14, 14 }, { 15, 15 },
523 static const struct clk_div_table pll_divr_table
[] = {
524 { 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 }, { 7, 7 }, { 0 }
529 struct clk_gate gate
;
536 #define to_stm32f4_pll(_gate) container_of(_gate, struct stm32f4_pll, gate)
538 struct stm32f4_pll_post_div_data
{
548 const struct clk_div_table
*div_table
;
551 struct stm32f4_vco_data
{
552 const char *vco_name
;
558 static const struct stm32f4_vco_data vco_data
[] = {
559 { "vco", STM32F4_RCC_PLLCFGR
, 24, 25 },
560 { "vco-i2s", STM32F4_RCC_PLLI2SCFGR
, 26, 27 },
561 { "vco-sai", STM32F4_RCC_PLLSAICFGR
, 28, 29 },
565 static const struct clk_div_table post_divr_table
[] = {
566 { 0, 2 }, { 1, 4 }, { 2, 8 }, { 3, 16 }, { 0 }
569 #define MAX_POST_DIV 3
570 static const struct stm32f4_pll_post_div_data post_div_data
[MAX_POST_DIV
] = {
571 { CLK_I2SQ_PDIV
, PLL_I2S
, "plli2s-q-div", "plli2s-q",
572 CLK_SET_RATE_PARENT
, STM32F4_RCC_DCKCFGR
, 0, 5, 0, NULL
},
574 { CLK_SAIQ_PDIV
, PLL_SAI
, "pllsai-q-div", "pllsai-q",
575 CLK_SET_RATE_PARENT
, STM32F4_RCC_DCKCFGR
, 8, 5, 0, NULL
},
577 { NO_IDX
, PLL_SAI
, "pllsai-r-div", "pllsai-r", CLK_SET_RATE_PARENT
,
578 STM32F4_RCC_DCKCFGR
, 16, 2, 0, post_divr_table
},
581 struct stm32f4_div_data
{
585 const struct clk_div_table
*div_table
;
588 #define MAX_PLL_DIV 3
589 static const struct stm32f4_div_data div_data
[MAX_PLL_DIV
] = {
590 { 16, 2, 0, pll_divp_table
},
591 { 24, 4, 0, pll_divq_table
},
592 { 28, 3, 0, pll_divr_table
},
595 struct stm32f4_pll_data
{
598 const char *div_name
[MAX_PLL_DIV
];
601 static const struct stm32f4_pll_data stm32f429_pll
[MAX_PLL_DIV
] = {
602 { PLL
, 192, { "pll", "pll48", NULL
} },
603 { PLL_I2S
, 192, { NULL
, "plli2s-q", "plli2s-r" } },
604 { PLL_SAI
, 49, { NULL
, "pllsai-q", "pllsai-r" } },
607 static const struct stm32f4_pll_data stm32f469_pll
[MAX_PLL_DIV
] = {
608 { PLL
, 50, { "pll", "pll-q", "pll-r" } },
609 { PLL_I2S
, 50, { "plli2s-p", "plli2s-q", "plli2s-r" } },
610 { PLL_SAI
, 50, { "pllsai-p", "pllsai-q", "pllsai-r" } },
613 static int stm32f4_pll_is_enabled(struct clk_hw
*hw
)
615 return clk_gate_ops
.is_enabled(hw
);
618 #define PLL_TIMEOUT 10000
620 static int stm32f4_pll_enable(struct clk_hw
*hw
)
622 struct clk_gate
*gate
= to_clk_gate(hw
);
623 struct stm32f4_pll
*pll
= to_stm32f4_pll(gate
);
625 unsigned int timeout
= PLL_TIMEOUT
;
627 if (clk_gate_ops
.is_enabled(hw
))
630 clk_gate_ops
.enable(hw
);
633 bit_status
= !(readl(gate
->reg
) & BIT(pll
->bit_rdy_idx
));
635 } while (bit_status
&& --timeout
);
640 static void stm32f4_pll_disable(struct clk_hw
*hw
)
642 clk_gate_ops
.disable(hw
);
645 static unsigned long stm32f4_pll_recalc(struct clk_hw
*hw
,
646 unsigned long parent_rate
)
648 struct clk_gate
*gate
= to_clk_gate(hw
);
649 struct stm32f4_pll
*pll
= to_stm32f4_pll(gate
);
652 n
= (readl(base
+ pll
->offset
) >> 6) & 0x1ff;
654 return parent_rate
* n
;
657 static long stm32f4_pll_round_rate(struct clk_hw
*hw
, unsigned long rate
,
658 unsigned long *prate
)
660 struct clk_gate
*gate
= to_clk_gate(hw
);
661 struct stm32f4_pll
*pll
= to_stm32f4_pll(gate
);
666 if (n
< pll
->n_start
)
674 static int stm32f4_pll_set_rate(struct clk_hw
*hw
, unsigned long rate
,
675 unsigned long parent_rate
)
677 struct clk_gate
*gate
= to_clk_gate(hw
);
678 struct stm32f4_pll
*pll
= to_stm32f4_pll(gate
);
684 pll_state
= stm32f4_pll_is_enabled(hw
);
687 stm32f4_pll_disable(hw
);
689 n
= rate
/ parent_rate
;
691 val
= readl(base
+ pll
->offset
) & ~(0x1ff << 6);
693 writel(val
| ((n
& 0x1ff) << 6), base
+ pll
->offset
);
696 stm32f4_pll_enable(hw
);
701 static const struct clk_ops stm32f4_pll_gate_ops
= {
702 .enable
= stm32f4_pll_enable
,
703 .disable
= stm32f4_pll_disable
,
704 .is_enabled
= stm32f4_pll_is_enabled
,
705 .recalc_rate
= stm32f4_pll_recalc
,
706 .round_rate
= stm32f4_pll_round_rate
,
707 .set_rate
= stm32f4_pll_set_rate
,
710 struct stm32f4_pll_div
{
711 struct clk_divider div
;
712 struct clk_hw
*hw_pll
;
715 #define to_pll_div_clk(_div) container_of(_div, struct stm32f4_pll_div, div)
717 static unsigned long stm32f4_pll_div_recalc_rate(struct clk_hw
*hw
,
718 unsigned long parent_rate
)
720 return clk_divider_ops
.recalc_rate(hw
, parent_rate
);
723 static long stm32f4_pll_div_round_rate(struct clk_hw
*hw
, unsigned long rate
,
724 unsigned long *prate
)
726 return clk_divider_ops
.round_rate(hw
, rate
, prate
);
729 static int stm32f4_pll_div_set_rate(struct clk_hw
*hw
, unsigned long rate
,
730 unsigned long parent_rate
)
734 struct clk_divider
*div
= to_clk_divider(hw
);
735 struct stm32f4_pll_div
*pll_div
= to_pll_div_clk(div
);
737 pll_state
= stm32f4_pll_is_enabled(pll_div
->hw_pll
);
740 stm32f4_pll_disable(pll_div
->hw_pll
);
742 ret
= clk_divider_ops
.set_rate(hw
, rate
, parent_rate
);
745 stm32f4_pll_enable(pll_div
->hw_pll
);
750 static const struct clk_ops stm32f4_pll_div_ops
= {
751 .recalc_rate
= stm32f4_pll_div_recalc_rate
,
752 .round_rate
= stm32f4_pll_div_round_rate
,
753 .set_rate
= stm32f4_pll_div_set_rate
,
756 static struct clk_hw
*clk_register_pll_div(const char *name
,
757 const char *parent_name
, unsigned long flags
,
758 void __iomem
*reg
, u8 shift
, u8 width
,
759 u8 clk_divider_flags
, const struct clk_div_table
*table
,
760 struct clk_hw
*pll_hw
, spinlock_t
*lock
)
762 struct stm32f4_pll_div
*pll_div
;
764 struct clk_init_data init
;
767 /* allocate the divider */
768 pll_div
= kzalloc(sizeof(*pll_div
), GFP_KERNEL
);
770 return ERR_PTR(-ENOMEM
);
773 init
.ops
= &stm32f4_pll_div_ops
;
775 init
.parent_names
= (parent_name
? &parent_name
: NULL
);
776 init
.num_parents
= (parent_name
? 1 : 0);
778 /* struct clk_divider assignments */
779 pll_div
->div
.reg
= reg
;
780 pll_div
->div
.shift
= shift
;
781 pll_div
->div
.width
= width
;
782 pll_div
->div
.flags
= clk_divider_flags
;
783 pll_div
->div
.lock
= lock
;
784 pll_div
->div
.table
= table
;
785 pll_div
->div
.hw
.init
= &init
;
787 pll_div
->hw_pll
= pll_hw
;
789 /* register the clock */
790 hw
= &pll_div
->div
.hw
;
791 ret
= clk_hw_register(NULL
, hw
);
800 static struct clk_hw
*stm32f4_rcc_register_pll(const char *pllsrc
,
801 const struct stm32f4_pll_data
*data
, spinlock_t
*lock
)
803 struct stm32f4_pll
*pll
;
804 struct clk_init_data init
= { NULL
};
806 struct clk_hw
*pll_hw
;
809 const struct stm32f4_vco_data
*vco
;
812 pll
= kzalloc(sizeof(*pll
), GFP_KERNEL
);
814 return ERR_PTR(-ENOMEM
);
816 vco
= &vco_data
[data
->pll_num
];
818 init
.name
= vco
->vco_name
;
819 init
.ops
= &stm32f4_pll_gate_ops
;
820 init
.flags
= CLK_SET_RATE_GATE
;
821 init
.parent_names
= &pllsrc
;
822 init
.num_parents
= 1;
824 pll
->gate
.lock
= lock
;
825 pll
->gate
.reg
= base
+ STM32F4_RCC_CR
;
826 pll
->gate
.bit_idx
= vco
->bit_idx
;
827 pll
->gate
.hw
.init
= &init
;
829 pll
->offset
= vco
->offset
;
830 pll
->n_start
= data
->n_start
;
831 pll
->bit_rdy_idx
= vco
->bit_rdy_idx
;
832 pll
->status
= (readl(base
+ STM32F4_RCC_CR
) >> vco
->bit_idx
) & 0x1;
834 reg
= base
+ pll
->offset
;
836 pll_hw
= &pll
->gate
.hw
;
837 ret
= clk_hw_register(NULL
, pll_hw
);
843 for (i
= 0; i
< MAX_PLL_DIV
; i
++)
844 if (data
->div_name
[i
])
845 clk_register_pll_div(data
->div_name
[i
],
851 div_data
[i
].flag_div
,
852 div_data
[i
].div_table
,
859 * Converts the primary and secondary indices (as they appear in DT) to an
860 * offset into our struct clock array.
862 static int stm32f4_rcc_lookup_clk_idx(u8 primary
, u8 secondary
)
864 u64 table
[MAX_GATE_MAP
];
867 if (WARN_ON(secondary
>= stm32fx_end_primary_clk
))
872 memcpy(table
, stm32f4_gate_map
, sizeof(table
));
874 /* only bits set in table can be used as indices */
875 if (WARN_ON(secondary
>= BITS_PER_BYTE
* sizeof(table
) ||
876 0 == (table
[BIT_ULL_WORD(secondary
)] &
877 BIT_ULL_MASK(secondary
))))
880 /* mask out bits above our current index */
881 table
[BIT_ULL_WORD(secondary
)] &=
882 GENMASK_ULL(secondary
% BITS_PER_LONG_LONG
, 0);
884 return stm32fx_end_primary_clk
- 1 + hweight64(table
[0]) +
885 (BIT_ULL_WORD(secondary
) >= 1 ? hweight64(table
[1]) : 0) +
886 (BIT_ULL_WORD(secondary
) >= 2 ? hweight64(table
[2]) : 0);
889 static struct clk_hw
*
890 stm32f4_rcc_lookup_clk(struct of_phandle_args
*clkspec
, void *data
)
892 int i
= stm32f4_rcc_lookup_clk_idx(clkspec
->args
[0], clkspec
->args
[1]);
895 return ERR_PTR(-EINVAL
);
900 #define to_rgclk(_rgate) container_of(_rgate, struct stm32_rgate, gate)
902 static inline void disable_power_domain_write_protection(void)
905 regmap_update_bits(pdrm
, 0x00, (1 << 8), (1 << 8));
908 static inline void enable_power_domain_write_protection(void)
911 regmap_update_bits(pdrm
, 0x00, (1 << 8), (0 << 8));
914 static inline void sofware_reset_backup_domain(void)
918 val
= readl(base
+ STM32F4_RCC_BDCR
);
919 writel(val
| BIT(16), base
+ STM32F4_RCC_BDCR
);
920 writel(val
& ~BIT(16), base
+ STM32F4_RCC_BDCR
);
924 struct clk_gate gate
;
928 #define RGATE_TIMEOUT 50000
930 static int rgclk_enable(struct clk_hw
*hw
)
932 struct clk_gate
*gate
= to_clk_gate(hw
);
933 struct stm32_rgate
*rgate
= to_rgclk(gate
);
935 unsigned int timeout
= RGATE_TIMEOUT
;
937 if (clk_gate_ops
.is_enabled(hw
))
940 disable_power_domain_write_protection();
942 clk_gate_ops
.enable(hw
);
945 bit_status
= !(readl(gate
->reg
) & BIT(rgate
->bit_rdy_idx
));
949 } while (bit_status
&& --timeout
);
951 enable_power_domain_write_protection();
956 static void rgclk_disable(struct clk_hw
*hw
)
958 clk_gate_ops
.disable(hw
);
961 static int rgclk_is_enabled(struct clk_hw
*hw
)
963 return clk_gate_ops
.is_enabled(hw
);
966 static const struct clk_ops rgclk_ops
= {
967 .enable
= rgclk_enable
,
968 .disable
= rgclk_disable
,
969 .is_enabled
= rgclk_is_enabled
,
972 static struct clk_hw
*clk_register_rgate(struct device
*dev
, const char *name
,
973 const char *parent_name
, unsigned long flags
,
974 void __iomem
*reg
, u8 bit_idx
, u8 bit_rdy_idx
,
975 u8 clk_gate_flags
, spinlock_t
*lock
)
977 struct stm32_rgate
*rgate
;
978 struct clk_init_data init
= { NULL
};
982 rgate
= kzalloc(sizeof(*rgate
), GFP_KERNEL
);
984 return ERR_PTR(-ENOMEM
);
987 init
.ops
= &rgclk_ops
;
989 init
.parent_names
= &parent_name
;
990 init
.num_parents
= 1;
992 rgate
->bit_rdy_idx
= bit_rdy_idx
;
994 rgate
->gate
.lock
= lock
;
995 rgate
->gate
.reg
= reg
;
996 rgate
->gate
.bit_idx
= bit_idx
;
997 rgate
->gate
.hw
.init
= &init
;
999 hw
= &rgate
->gate
.hw
;
1000 ret
= clk_hw_register(dev
, hw
);
1009 static int cclk_gate_enable(struct clk_hw
*hw
)
1013 disable_power_domain_write_protection();
1015 ret
= clk_gate_ops
.enable(hw
);
1017 enable_power_domain_write_protection();
1022 static void cclk_gate_disable(struct clk_hw
*hw
)
1024 disable_power_domain_write_protection();
1026 clk_gate_ops
.disable(hw
);
1028 enable_power_domain_write_protection();
1031 static int cclk_gate_is_enabled(struct clk_hw
*hw
)
1033 return clk_gate_ops
.is_enabled(hw
);
1036 static const struct clk_ops cclk_gate_ops
= {
1037 .enable
= cclk_gate_enable
,
1038 .disable
= cclk_gate_disable
,
1039 .is_enabled
= cclk_gate_is_enabled
,
1042 static u8
cclk_mux_get_parent(struct clk_hw
*hw
)
1044 return clk_mux_ops
.get_parent(hw
);
1047 static int cclk_mux_set_parent(struct clk_hw
*hw
, u8 index
)
1051 disable_power_domain_write_protection();
1053 sofware_reset_backup_domain();
1055 ret
= clk_mux_ops
.set_parent(hw
, index
);
1057 enable_power_domain_write_protection();
1062 static const struct clk_ops cclk_mux_ops
= {
1063 .get_parent
= cclk_mux_get_parent
,
1064 .set_parent
= cclk_mux_set_parent
,
1067 static struct clk_hw
*stm32_register_cclk(struct device
*dev
, const char *name
,
1068 const char * const *parent_names
, int num_parents
,
1069 void __iomem
*reg
, u8 bit_idx
, u8 shift
, unsigned long flags
,
1073 struct clk_gate
*gate
;
1074 struct clk_mux
*mux
;
1076 gate
= kzalloc(sizeof(*gate
), GFP_KERNEL
);
1078 hw
= ERR_PTR(-EINVAL
);
1082 mux
= kzalloc(sizeof(*mux
), GFP_KERNEL
);
1085 hw
= ERR_PTR(-EINVAL
);
1090 gate
->bit_idx
= bit_idx
;
1099 hw
= clk_hw_register_composite(dev
, name
, parent_names
, num_parents
,
1100 &mux
->hw
, &cclk_mux_ops
,
1102 &gate
->hw
, &cclk_gate_ops
,
1114 static const char *sys_parents
[] __initdata
= { "hsi", NULL
, "pll" };
1116 static const struct clk_div_table ahb_div_table
[] = {
1117 { 0x0, 1 }, { 0x1, 1 }, { 0x2, 1 }, { 0x3, 1 },
1118 { 0x4, 1 }, { 0x5, 1 }, { 0x6, 1 }, { 0x7, 1 },
1119 { 0x8, 2 }, { 0x9, 4 }, { 0xa, 8 }, { 0xb, 16 },
1120 { 0xc, 64 }, { 0xd, 128 }, { 0xe, 256 }, { 0xf, 512 },
1124 static const struct clk_div_table apb_div_table
[] = {
1125 { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
1126 { 4, 2 }, { 5, 4 }, { 6, 8 }, { 7, 16 },
1130 static const char *rtc_parents
[4] = {
1131 "no-clock", "lse", "lsi", "hse-rtc"
1134 static const char *pll_src
= "pll-src";
1136 static const char *pllsrc_parent
[2] = { "hsi", NULL
};
1138 static const char *dsi_parent
[2] = { NULL
, "pll-r" };
1140 static const char *lcd_parent
[1] = { "pllsai-r-div" };
1142 static const char *i2s_parents
[2] = { "plli2s-r", NULL
};
1144 static const char *sai_parents
[4] = { "pllsai-q-div", "plli2s-q-div", NULL
,
1147 static const char *pll48_parents
[2] = { "pll-q", "pllsai-p" };
1149 static const char *sdmux_parents
[2] = { "pll48", "sys" };
1151 static const char *hdmi_parents
[2] = { "lse", "hsi_div488" };
1153 static const char *spdif_parent
[1] = { "plli2s-p" };
1155 static const char *lptim_parent
[4] = { "apb1_mul", "lsi", "hsi", "lse" };
1157 static const char *uart_parents1
[4] = { "apb2_div", "sys", "hsi", "lse" };
1158 static const char *uart_parents2
[4] = { "apb1_div", "sys", "hsi", "lse" };
1160 static const char *i2c_parents
[4] = { "apb1_div", "sys", "hsi", "no-clock" };
1162 static const char * const dfsdm1_src
[] = { "apb2_div", "sys" };
1163 static const char * const adsfdm1_parent
[] = { "sai1_clk", "sai2_clk" };
1165 struct stm32_aux_clk
{
1168 const char * const *parent_names
;
1175 unsigned long flags
;
1178 struct stm32f4_clk_data
{
1179 const struct stm32f4_gate_data
*gates_data
;
1180 const u64
*gates_map
;
1182 const struct stm32f4_pll_data
*pll_data
;
1183 const struct stm32_aux_clk
*aux_clk
;
1188 static const struct stm32_aux_clk stm32f429_aux_clk
[] = {
1190 CLK_LCD
, "lcd-tft", lcd_parent
, ARRAY_SIZE(lcd_parent
),
1192 STM32F4_RCC_APB2ENR
, 26,
1196 CLK_I2S
, "i2s", i2s_parents
, ARRAY_SIZE(i2s_parents
),
1197 STM32F4_RCC_CFGR
, 23, 1,
1202 CLK_SAI1
, "sai1-a", sai_parents
, ARRAY_SIZE(sai_parents
),
1203 STM32F4_RCC_DCKCFGR
, 20, 3,
1204 STM32F4_RCC_APB2ENR
, 22,
1208 CLK_SAI2
, "sai1-b", sai_parents
, ARRAY_SIZE(sai_parents
),
1209 STM32F4_RCC_DCKCFGR
, 22, 3,
1210 STM32F4_RCC_APB2ENR
, 22,
1215 static const struct stm32_aux_clk stm32f469_aux_clk
[] = {
1217 CLK_LCD
, "lcd-tft", lcd_parent
, ARRAY_SIZE(lcd_parent
),
1219 STM32F4_RCC_APB2ENR
, 26,
1223 CLK_I2S
, "i2s", i2s_parents
, ARRAY_SIZE(i2s_parents
),
1224 STM32F4_RCC_CFGR
, 23, 1,
1229 CLK_SAI1
, "sai1-a", sai_parents
, ARRAY_SIZE(sai_parents
),
1230 STM32F4_RCC_DCKCFGR
, 20, 3,
1231 STM32F4_RCC_APB2ENR
, 22,
1235 CLK_SAI2
, "sai1-b", sai_parents
, ARRAY_SIZE(sai_parents
),
1236 STM32F4_RCC_DCKCFGR
, 22, 3,
1237 STM32F4_RCC_APB2ENR
, 22,
1241 NO_IDX
, "pll48", pll48_parents
, ARRAY_SIZE(pll48_parents
),
1242 STM32F4_RCC_DCKCFGR
, 27, 1,
1247 NO_IDX
, "sdmux", sdmux_parents
, ARRAY_SIZE(sdmux_parents
),
1248 STM32F4_RCC_DCKCFGR
, 28, 1,
1253 CLK_F469_DSI
, "dsi", dsi_parent
, ARRAY_SIZE(dsi_parent
),
1254 STM32F4_RCC_DCKCFGR
, 29, 1,
1255 STM32F4_RCC_APB2ENR
, 27,
1256 CLK_SET_RATE_PARENT
| CLK_SET_RATE_NO_REPARENT
1260 static const struct stm32_aux_clk stm32f746_aux_clk
[] = {
1262 CLK_LCD
, "lcd-tft", lcd_parent
, ARRAY_SIZE(lcd_parent
),
1264 STM32F4_RCC_APB2ENR
, 26,
1268 CLK_I2S
, "i2s", i2s_parents
, ARRAY_SIZE(i2s_parents
),
1269 STM32F4_RCC_CFGR
, 23, 1,
1274 CLK_SAI1
, "sai1_clk", sai_parents
, ARRAY_SIZE(sai_parents
),
1275 STM32F4_RCC_DCKCFGR
, 20, 3,
1276 STM32F4_RCC_APB2ENR
, 22,
1280 CLK_SAI2
, "sai2_clk", sai_parents
, ARRAY_SIZE(sai_parents
),
1281 STM32F4_RCC_DCKCFGR
, 22, 3,
1282 STM32F4_RCC_APB2ENR
, 23,
1286 NO_IDX
, "pll48", pll48_parents
, ARRAY_SIZE(pll48_parents
),
1287 STM32F7_RCC_DCKCFGR2
, 27, 1,
1292 NO_IDX
, "sdmux", sdmux_parents
, ARRAY_SIZE(sdmux_parents
),
1293 STM32F7_RCC_DCKCFGR2
, 28, 1,
1298 CLK_HDMI_CEC
, "hdmi-cec",
1299 hdmi_parents
, ARRAY_SIZE(hdmi_parents
),
1300 STM32F7_RCC_DCKCFGR2
, 26, 1,
1305 CLK_SPDIF
, "spdif-rx",
1306 spdif_parent
, ARRAY_SIZE(spdif_parent
),
1307 STM32F7_RCC_DCKCFGR2
, 22, 3,
1308 STM32F4_RCC_APB2ENR
, 23,
1312 CLK_USART1
, "usart1",
1313 uart_parents1
, ARRAY_SIZE(uart_parents1
),
1314 STM32F7_RCC_DCKCFGR2
, 0, 3,
1315 STM32F4_RCC_APB2ENR
, 4,
1316 CLK_SET_RATE_PARENT
,
1319 CLK_USART2
, "usart2",
1320 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1321 STM32F7_RCC_DCKCFGR2
, 2, 3,
1322 STM32F4_RCC_APB1ENR
, 17,
1323 CLK_SET_RATE_PARENT
,
1326 CLK_USART3
, "usart3",
1327 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1328 STM32F7_RCC_DCKCFGR2
, 4, 3,
1329 STM32F4_RCC_APB1ENR
, 18,
1330 CLK_SET_RATE_PARENT
,
1334 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1335 STM32F7_RCC_DCKCFGR2
, 6, 3,
1336 STM32F4_RCC_APB1ENR
, 19,
1337 CLK_SET_RATE_PARENT
,
1341 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1342 STM32F7_RCC_DCKCFGR2
, 8, 3,
1343 STM32F4_RCC_APB1ENR
, 20,
1344 CLK_SET_RATE_PARENT
,
1347 CLK_USART6
, "usart6",
1348 uart_parents1
, ARRAY_SIZE(uart_parents1
),
1349 STM32F7_RCC_DCKCFGR2
, 10, 3,
1350 STM32F4_RCC_APB2ENR
, 5,
1351 CLK_SET_RATE_PARENT
,
1356 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1357 STM32F7_RCC_DCKCFGR2
, 12, 3,
1358 STM32F4_RCC_APB1ENR
, 30,
1359 CLK_SET_RATE_PARENT
,
1363 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1364 STM32F7_RCC_DCKCFGR2
, 14, 3,
1365 STM32F4_RCC_APB1ENR
, 31,
1366 CLK_SET_RATE_PARENT
,
1370 i2c_parents
, ARRAY_SIZE(i2c_parents
),
1371 STM32F7_RCC_DCKCFGR2
, 16, 3,
1372 STM32F4_RCC_APB1ENR
, 21,
1373 CLK_SET_RATE_PARENT
,
1377 i2c_parents
, ARRAY_SIZE(i2c_parents
),
1378 STM32F7_RCC_DCKCFGR2
, 18, 3,
1379 STM32F4_RCC_APB1ENR
, 22,
1380 CLK_SET_RATE_PARENT
,
1384 i2c_parents
, ARRAY_SIZE(i2c_parents
),
1385 STM32F7_RCC_DCKCFGR2
, 20, 3,
1386 STM32F4_RCC_APB1ENR
, 23,
1387 CLK_SET_RATE_PARENT
,
1391 i2c_parents
, ARRAY_SIZE(i2c_parents
),
1392 STM32F7_RCC_DCKCFGR2
, 22, 3,
1393 STM32F4_RCC_APB1ENR
, 24,
1394 CLK_SET_RATE_PARENT
,
1398 CLK_LPTIMER
, "lptim1",
1399 lptim_parent
, ARRAY_SIZE(lptim_parent
),
1400 STM32F7_RCC_DCKCFGR2
, 24, 3,
1401 STM32F4_RCC_APB1ENR
, 9,
1406 static const struct stm32_aux_clk stm32f769_aux_clk
[] = {
1408 CLK_LCD
, "lcd-tft", lcd_parent
, ARRAY_SIZE(lcd_parent
),
1410 STM32F4_RCC_APB2ENR
, 26,
1414 CLK_I2S
, "i2s", i2s_parents
, ARRAY_SIZE(i2s_parents
),
1415 STM32F4_RCC_CFGR
, 23, 1,
1420 CLK_SAI1
, "sai1_clk", sai_parents
, ARRAY_SIZE(sai_parents
),
1421 STM32F4_RCC_DCKCFGR
, 20, 3,
1422 STM32F4_RCC_APB2ENR
, 22,
1426 CLK_SAI2
, "sai2_clk", sai_parents
, ARRAY_SIZE(sai_parents
),
1427 STM32F4_RCC_DCKCFGR
, 22, 3,
1428 STM32F4_RCC_APB2ENR
, 23,
1432 NO_IDX
, "pll48", pll48_parents
, ARRAY_SIZE(pll48_parents
),
1433 STM32F7_RCC_DCKCFGR2
, 27, 1,
1438 NO_IDX
, "sdmux1", sdmux_parents
, ARRAY_SIZE(sdmux_parents
),
1439 STM32F7_RCC_DCKCFGR2
, 28, 1,
1444 NO_IDX
, "sdmux2", sdmux_parents
, ARRAY_SIZE(sdmux_parents
),
1445 STM32F7_RCC_DCKCFGR2
, 29, 1,
1450 CLK_HDMI_CEC
, "hdmi-cec",
1451 hdmi_parents
, ARRAY_SIZE(hdmi_parents
),
1452 STM32F7_RCC_DCKCFGR2
, 26, 1,
1457 CLK_SPDIF
, "spdif-rx",
1458 spdif_parent
, ARRAY_SIZE(spdif_parent
),
1459 STM32F7_RCC_DCKCFGR2
, 22, 3,
1460 STM32F4_RCC_APB2ENR
, 23,
1464 CLK_USART1
, "usart1",
1465 uart_parents1
, ARRAY_SIZE(uart_parents1
),
1466 STM32F7_RCC_DCKCFGR2
, 0, 3,
1467 STM32F4_RCC_APB2ENR
, 4,
1468 CLK_SET_RATE_PARENT
,
1471 CLK_USART2
, "usart2",
1472 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1473 STM32F7_RCC_DCKCFGR2
, 2, 3,
1474 STM32F4_RCC_APB1ENR
, 17,
1475 CLK_SET_RATE_PARENT
,
1478 CLK_USART3
, "usart3",
1479 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1480 STM32F7_RCC_DCKCFGR2
, 4, 3,
1481 STM32F4_RCC_APB1ENR
, 18,
1482 CLK_SET_RATE_PARENT
,
1486 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1487 STM32F7_RCC_DCKCFGR2
, 6, 3,
1488 STM32F4_RCC_APB1ENR
, 19,
1489 CLK_SET_RATE_PARENT
,
1493 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1494 STM32F7_RCC_DCKCFGR2
, 8, 3,
1495 STM32F4_RCC_APB1ENR
, 20,
1496 CLK_SET_RATE_PARENT
,
1499 CLK_USART6
, "usart6",
1500 uart_parents1
, ARRAY_SIZE(uart_parents1
),
1501 STM32F7_RCC_DCKCFGR2
, 10, 3,
1502 STM32F4_RCC_APB2ENR
, 5,
1503 CLK_SET_RATE_PARENT
,
1507 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1508 STM32F7_RCC_DCKCFGR2
, 12, 3,
1509 STM32F4_RCC_APB1ENR
, 30,
1510 CLK_SET_RATE_PARENT
,
1514 uart_parents2
, ARRAY_SIZE(uart_parents1
),
1515 STM32F7_RCC_DCKCFGR2
, 14, 3,
1516 STM32F4_RCC_APB1ENR
, 31,
1517 CLK_SET_RATE_PARENT
,
1521 i2c_parents
, ARRAY_SIZE(i2c_parents
),
1522 STM32F7_RCC_DCKCFGR2
, 16, 3,
1523 STM32F4_RCC_APB1ENR
, 21,
1524 CLK_SET_RATE_PARENT
,
1528 i2c_parents
, ARRAY_SIZE(i2c_parents
),
1529 STM32F7_RCC_DCKCFGR2
, 18, 3,
1530 STM32F4_RCC_APB1ENR
, 22,
1531 CLK_SET_RATE_PARENT
,
1535 i2c_parents
, ARRAY_SIZE(i2c_parents
),
1536 STM32F7_RCC_DCKCFGR2
, 20, 3,
1537 STM32F4_RCC_APB1ENR
, 23,
1538 CLK_SET_RATE_PARENT
,
1542 i2c_parents
, ARRAY_SIZE(i2c_parents
),
1543 STM32F7_RCC_DCKCFGR2
, 22, 3,
1544 STM32F4_RCC_APB1ENR
, 24,
1545 CLK_SET_RATE_PARENT
,
1548 CLK_LPTIMER
, "lptim1",
1549 lptim_parent
, ARRAY_SIZE(lptim_parent
),
1550 STM32F7_RCC_DCKCFGR2
, 24, 3,
1551 STM32F4_RCC_APB1ENR
, 9,
1555 CLK_F769_DSI
, "dsi",
1556 dsi_parent
, ARRAY_SIZE(dsi_parent
),
1557 STM32F7_RCC_DCKCFGR2
, 0, 1,
1558 STM32F4_RCC_APB2ENR
, 27,
1562 CLK_DFSDM1
, "dfsdm1",
1563 dfsdm1_src
, ARRAY_SIZE(dfsdm1_src
),
1564 STM32F4_RCC_DCKCFGR
, 25, 1,
1565 STM32F4_RCC_APB2ENR
, 29,
1569 CLK_ADFSDM1
, "adfsdm1",
1570 adsfdm1_parent
, ARRAY_SIZE(adsfdm1_parent
),
1571 STM32F4_RCC_DCKCFGR
, 26, 1,
1572 STM32F4_RCC_APB2ENR
, 29,
1577 static const struct stm32f4_clk_data stm32f429_clk_data
= {
1578 .end_primary
= END_PRIMARY_CLK
,
1579 .gates_data
= stm32f429_gates
,
1580 .gates_map
= stm32f42xx_gate_map
,
1581 .gates_num
= ARRAY_SIZE(stm32f429_gates
),
1582 .pll_data
= stm32f429_pll
,
1583 .aux_clk
= stm32f429_aux_clk
,
1584 .aux_clk_num
= ARRAY_SIZE(stm32f429_aux_clk
),
1587 static const struct stm32f4_clk_data stm32f469_clk_data
= {
1588 .end_primary
= END_PRIMARY_CLK
,
1589 .gates_data
= stm32f469_gates
,
1590 .gates_map
= stm32f46xx_gate_map
,
1591 .gates_num
= ARRAY_SIZE(stm32f469_gates
),
1592 .pll_data
= stm32f469_pll
,
1593 .aux_clk
= stm32f469_aux_clk
,
1594 .aux_clk_num
= ARRAY_SIZE(stm32f469_aux_clk
),
1597 static const struct stm32f4_clk_data stm32f746_clk_data
= {
1598 .end_primary
= END_PRIMARY_CLK_F7
,
1599 .gates_data
= stm32f746_gates
,
1600 .gates_map
= stm32f746_gate_map
,
1601 .gates_num
= ARRAY_SIZE(stm32f746_gates
),
1602 .pll_data
= stm32f469_pll
,
1603 .aux_clk
= stm32f746_aux_clk
,
1604 .aux_clk_num
= ARRAY_SIZE(stm32f746_aux_clk
),
1607 static const struct stm32f4_clk_data stm32f769_clk_data
= {
1608 .end_primary
= END_PRIMARY_CLK_F7
,
1609 .gates_data
= stm32f769_gates
,
1610 .gates_map
= stm32f769_gate_map
,
1611 .gates_num
= ARRAY_SIZE(stm32f769_gates
),
1612 .pll_data
= stm32f469_pll
,
1613 .aux_clk
= stm32f769_aux_clk
,
1614 .aux_clk_num
= ARRAY_SIZE(stm32f769_aux_clk
),
1617 static const struct of_device_id stm32f4_of_match
[] = {
1619 .compatible
= "st,stm32f42xx-rcc",
1620 .data
= &stm32f429_clk_data
1623 .compatible
= "st,stm32f469-rcc",
1624 .data
= &stm32f469_clk_data
1627 .compatible
= "st,stm32f746-rcc",
1628 .data
= &stm32f746_clk_data
1631 .compatible
= "st,stm32f769-rcc",
1632 .data
= &stm32f769_clk_data
1637 static struct clk_hw
*stm32_register_aux_clk(const char *name
,
1638 const char * const *parent_names
, int num_parents
,
1639 int offset_mux
, u8 shift
, u8 mask
,
1640 int offset_gate
, u8 bit_idx
,
1641 unsigned long flags
, spinlock_t
*lock
)
1644 struct clk_gate
*gate
= NULL
;
1645 struct clk_mux
*mux
= NULL
;
1646 struct clk_hw
*mux_hw
= NULL
, *gate_hw
= NULL
;
1647 const struct clk_ops
*mux_ops
= NULL
, *gate_ops
= NULL
;
1649 if (offset_gate
!= NO_GATE
) {
1650 gate
= kzalloc(sizeof(*gate
), GFP_KERNEL
);
1652 hw
= ERR_PTR(-EINVAL
);
1656 gate
->reg
= base
+ offset_gate
;
1657 gate
->bit_idx
= bit_idx
;
1660 gate_hw
= &gate
->hw
;
1661 gate_ops
= &clk_gate_ops
;
1664 if (offset_mux
!= NO_MUX
) {
1665 mux
= kzalloc(sizeof(*mux
), GFP_KERNEL
);
1667 hw
= ERR_PTR(-EINVAL
);
1671 mux
->reg
= base
+ offset_mux
;
1676 mux_ops
= &clk_mux_ops
;
1679 if (mux_hw
== NULL
&& gate_hw
== NULL
) {
1680 hw
= ERR_PTR(-EINVAL
);
1684 hw
= clk_hw_register_composite(NULL
, name
, parent_names
, num_parents
,
1699 static void __init
stm32f4_rcc_init(struct device_node
*np
)
1701 const char *hse_clk
, *i2s_in_clk
;
1703 const struct of_device_id
*match
;
1704 const struct stm32f4_clk_data
*data
;
1706 struct clk_hw
*pll_src_hw
;
1708 base
= of_iomap(np
, 0);
1710 pr_err("%pOFn: unable to map resource\n", np
);
1714 pdrm
= syscon_regmap_lookup_by_phandle(np
, "st,syscfg");
1717 pr_warn("%s: Unable to get syscfg\n", __func__
);
1720 match
= of_match_node(stm32f4_of_match
, np
);
1721 if (WARN_ON(!match
))
1726 stm32fx_end_primary_clk
= data
->end_primary
;
1728 clks
= kmalloc_array(data
->gates_num
+ stm32fx_end_primary_clk
,
1729 sizeof(*clks
), GFP_KERNEL
);
1733 stm32f4_gate_map
= data
->gates_map
;
1735 hse_clk
= of_clk_get_parent_name(np
, 0);
1736 dsi_parent
[0] = hse_clk
;
1737 pllsrc_parent
[1] = hse_clk
;
1739 i2s_in_clk
= of_clk_get_parent_name(np
, 1);
1741 i2s_parents
[1] = i2s_in_clk
;
1742 sai_parents
[2] = i2s_in_clk
;
1744 if (of_device_is_compatible(np
, "st,stm32f769-rcc")) {
1745 clk_hw_register_gate(NULL
, "dfsdm1_apb", "apb2_div", 0,
1746 base
+ STM32F4_RCC_APB2ENR
, 29,
1747 CLK_IGNORE_UNUSED
, &stm32f4_clk_lock
);
1748 dsi_parent
[0] = pll_src
;
1749 sai_parents
[3] = pll_src
;
1752 clks
[CLK_HSI
] = clk_hw_register_fixed_rate_with_accuracy(NULL
, "hsi",
1753 NULL
, 0, 16000000, 160000);
1755 pll_src_hw
= clk_hw_register_mux(NULL
, pll_src
, pllsrc_parent
,
1756 ARRAY_SIZE(pllsrc_parent
), 0,
1757 base
+ STM32F4_RCC_PLLCFGR
, 22, 1, 0,
1760 pllm
= readl(base
+ STM32F4_RCC_PLLCFGR
) & 0x3f;
1762 clk_hw_register_fixed_factor(NULL
, "vco_in", pll_src
,
1765 stm32f4_rcc_register_pll("vco_in", &data
->pll_data
[0],
1768 clks
[PLL_VCO_I2S
] = stm32f4_rcc_register_pll("vco_in",
1769 &data
->pll_data
[1], &stm32f4_clk_lock
);
1771 clks
[PLL_VCO_SAI
] = stm32f4_rcc_register_pll("vco_in",
1772 &data
->pll_data
[2], &stm32f4_clk_lock
);
1774 for (n
= 0; n
< MAX_POST_DIV
; n
++) {
1775 const struct stm32f4_pll_post_div_data
*post_div
;
1778 post_div
= &post_div_data
[n
];
1780 hw
= clk_register_pll_div(post_div
->name
,
1783 base
+ post_div
->offset
,
1787 post_div
->div_table
,
1788 clks
[post_div
->pll_num
],
1791 if (post_div
->idx
!= NO_IDX
)
1792 clks
[post_div
->idx
] = hw
;
1795 sys_parents
[1] = hse_clk
;
1797 clks
[CLK_SYSCLK
] = clk_hw_register_mux_table(
1798 NULL
, "sys", sys_parents
, ARRAY_SIZE(sys_parents
), 0,
1799 base
+ STM32F4_RCC_CFGR
, 0, 3, 0, NULL
, &stm32f4_clk_lock
);
1801 clk_register_divider_table(NULL
, "ahb_div", "sys",
1802 CLK_SET_RATE_PARENT
, base
+ STM32F4_RCC_CFGR
,
1803 4, 4, 0, ahb_div_table
, &stm32f4_clk_lock
);
1805 clk_register_divider_table(NULL
, "apb1_div", "ahb_div",
1806 CLK_SET_RATE_PARENT
, base
+ STM32F4_RCC_CFGR
,
1807 10, 3, 0, apb_div_table
, &stm32f4_clk_lock
);
1808 clk_register_apb_mul(NULL
, "apb1_mul", "apb1_div",
1809 CLK_SET_RATE_PARENT
, 12);
1811 clk_register_divider_table(NULL
, "apb2_div", "ahb_div",
1812 CLK_SET_RATE_PARENT
, base
+ STM32F4_RCC_CFGR
,
1813 13, 3, 0, apb_div_table
, &stm32f4_clk_lock
);
1814 clk_register_apb_mul(NULL
, "apb2_mul", "apb2_div",
1815 CLK_SET_RATE_PARENT
, 15);
1817 clks
[SYSTICK
] = clk_hw_register_fixed_factor(NULL
, "systick", "ahb_div",
1819 clks
[FCLK
] = clk_hw_register_fixed_factor(NULL
, "fclk", "ahb_div",
1822 for (n
= 0; n
< data
->gates_num
; n
++) {
1823 const struct stm32f4_gate_data
*gd
;
1824 unsigned int secondary
;
1827 gd
= &data
->gates_data
[n
];
1828 secondary
= 8 * (gd
->offset
- STM32F4_RCC_AHB1ENR
) +
1830 idx
= stm32f4_rcc_lookup_clk_idx(0, secondary
);
1835 clks
[idx
] = clk_hw_register_gate(
1836 NULL
, gd
->name
, gd
->parent_name
, gd
->flags
,
1837 base
+ gd
->offset
, gd
->bit_idx
, 0, &stm32f4_clk_lock
);
1839 if (IS_ERR(clks
[idx
])) {
1840 pr_err("%pOF: Unable to register leaf clock %s\n",
1846 clks
[CLK_LSI
] = clk_register_rgate(NULL
, "lsi", "clk-lsi", 0,
1847 base
+ STM32F4_RCC_CSR
, 0, 1, 0, &stm32f4_clk_lock
);
1849 if (IS_ERR(clks
[CLK_LSI
])) {
1850 pr_err("Unable to register lsi clock\n");
1854 clks
[CLK_LSE
] = clk_register_rgate(NULL
, "lse", "clk-lse", 0,
1855 base
+ STM32F4_RCC_BDCR
, 0, 1, 0, &stm32f4_clk_lock
);
1857 if (IS_ERR(clks
[CLK_LSE
])) {
1858 pr_err("Unable to register lse clock\n");
1862 clks
[CLK_HSE_RTC
] = clk_hw_register_divider(NULL
, "hse-rtc", "clk-hse",
1863 0, base
+ STM32F4_RCC_CFGR
, 16, 5, 0,
1866 if (IS_ERR(clks
[CLK_HSE_RTC
])) {
1867 pr_err("Unable to register hse-rtc clock\n");
1871 clks
[CLK_RTC
] = stm32_register_cclk(NULL
, "rtc", rtc_parents
, 4,
1872 base
+ STM32F4_RCC_BDCR
, 15, 8, 0, &stm32f4_clk_lock
);
1874 if (IS_ERR(clks
[CLK_RTC
])) {
1875 pr_err("Unable to register rtc clock\n");
1879 for (n
= 0; n
< data
->aux_clk_num
; n
++) {
1880 const struct stm32_aux_clk
*aux_clk
;
1883 aux_clk
= &data
->aux_clk
[n
];
1885 hw
= stm32_register_aux_clk(aux_clk
->name
,
1886 aux_clk
->parent_names
, aux_clk
->num_parents
,
1887 aux_clk
->offset_mux
, aux_clk
->shift
,
1888 aux_clk
->mask
, aux_clk
->offset_gate
,
1889 aux_clk
->bit_idx
, aux_clk
->flags
,
1893 pr_warn("Unable to register %s clk\n", aux_clk
->name
);
1897 if (aux_clk
->idx
!= NO_IDX
)
1898 clks
[aux_clk
->idx
] = hw
;
1901 if (of_device_is_compatible(np
, "st,stm32f746-rcc")) {
1903 clk_hw_register_fixed_factor(NULL
, "hsi_div488", "hsi", 0,
1906 clks
[CLK_PLL_SRC
] = pll_src_hw
;
1909 of_clk_add_hw_provider(np
, stm32f4_rcc_lookup_clk
, NULL
);
1916 CLK_OF_DECLARE_DRIVER(stm32f42xx_rcc
, "st,stm32f42xx-rcc", stm32f4_rcc_init
);
1917 CLK_OF_DECLARE_DRIVER(stm32f46xx_rcc
, "st,stm32f469-rcc", stm32f4_rcc_init
);
1918 CLK_OF_DECLARE_DRIVER(stm32f746_rcc
, "st,stm32f746-rcc", stm32f4_rcc_init
);
1919 CLK_OF_DECLARE_DRIVER(stm32f769_rcc
, "st,stm32f769-rcc", stm32f4_rcc_init
);