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358bdf89 DT |
1 | /* |
2 | * Author: Daniel Thompson <daniel.thompson@linaro.org> | |
3 | * | |
4 | * Inspired by clk-asm9260.c . | |
5 | * | |
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. | |
9 | * | |
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 | |
13 | * more details. | |
14 | * | |
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/>. | |
17 | */ | |
18 | ||
19 | #include <linux/clk-provider.h> | |
20 | #include <linux/err.h> | |
21 | #include <linux/io.h> | |
861adc44 GF |
22 | #include <linux/iopoll.h> |
23 | #include <linux/ioport.h> | |
358bdf89 DT |
24 | #include <linux/slab.h> |
25 | #include <linux/spinlock.h> | |
26 | #include <linux/of.h> | |
27 | #include <linux/of_address.h> | |
861adc44 GF |
28 | #include <linux/regmap.h> |
29 | #include <linux/mfd/syscon.h> | |
358bdf89 | 30 | |
83135ad3 GF |
31 | /* |
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 | |
34 | * | |
35 | */ | |
36 | #include <dt-bindings/clock/stm32fx-clock.h> | |
37 | ||
38 | #define STM32F4_RCC_CR 0x00 | |
358bdf89 DT |
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 | |
861adc44 GF |
46 | #define STM32F4_RCC_BDCR 0x70 |
47 | #define STM32F4_RCC_CSR 0x74 | |
83135ad3 GF |
48 | #define STM32F4_RCC_PLLI2SCFGR 0x84 |
49 | #define STM32F4_RCC_PLLSAICFGR 0x88 | |
517633ef | 50 | #define STM32F4_RCC_DCKCFGR 0x8c |
88c9b70b | 51 | #define STM32F7_RCC_DCKCFGR2 0x90 |
517633ef GF |
52 | |
53 | #define NONE -1 | |
54 | #define NO_IDX NONE | |
daf2d117 GF |
55 | #define NO_MUX NONE |
56 | #define NO_GATE NONE | |
358bdf89 DT |
57 | |
58 | struct stm32f4_gate_data { | |
59 | u8 offset; | |
60 | u8 bit_idx; | |
61 | const char *name; | |
62 | const char *parent_name; | |
63 | unsigned long flags; | |
64 | }; | |
65 | ||
a064a07f | 66 | static const struct stm32f4_gate_data stm32f429_gates[] __initconst = { |
358bdf89 DT |
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" }, | |
90 | ||
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" }, | |
96 | ||
97 | { STM32F4_RCC_AHB3ENR, 0, "fmc", "ahb_div", | |
98 | CLK_IGNORE_UNUSED }, | |
99 | ||
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" }, | |
125 | ||
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" }, | |
144 | }; | |
145 | ||
a064a07f GF |
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" }, | |
170 | ||
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" }, | |
176 | ||
177 | { STM32F4_RCC_AHB3ENR, 0, "fmc", "ahb_div", | |
178 | CLK_IGNORE_UNUSED }, | |
179 | { STM32F4_RCC_AHB3ENR, 1, "qspi", "ahb_div", | |
180 | CLK_IGNORE_UNUSED }, | |
181 | ||
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" }, | |
207 | ||
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" }, | |
844ca23f | 215 | { STM32F4_RCC_APB2ENR, 11, "sdio", "sdmux" }, |
a064a07f GF |
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" }, | |
226 | }; | |
227 | ||
88c9b70b GF |
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" }, | |
252 | ||
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" }, | |
258 | ||
259 | { STM32F4_RCC_AHB3ENR, 0, "fmc", "ahb_div", | |
260 | CLK_IGNORE_UNUSED }, | |
261 | { STM32F4_RCC_AHB3ENR, 1, "qspi", "ahb_div", | |
262 | CLK_IGNORE_UNUSED }, | |
263 | ||
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" }, | |
282 | ||
283 | { STM32F4_RCC_APB2ENR, 0, "tim1", "apb2_mul" }, | |
284 | { STM32F4_RCC_APB2ENR, 1, "tim8", "apb2_mul" }, | |
285 | { STM32F4_RCC_APB2ENR, 8, "adc1", "apb2_div" }, | |
286 | { STM32F4_RCC_APB2ENR, 9, "adc2", "apb2_div" }, | |
287 | { STM32F4_RCC_APB2ENR, 10, "adc3", "apb2_div" }, | |
288 | { STM32F4_RCC_APB2ENR, 11, "sdmmc", "sdmux" }, | |
289 | { STM32F4_RCC_APB2ENR, 12, "spi1", "apb2_div" }, | |
290 | { STM32F4_RCC_APB2ENR, 13, "spi4", "apb2_div" }, | |
291 | { STM32F4_RCC_APB2ENR, 14, "syscfg", "apb2_div" }, | |
292 | { STM32F4_RCC_APB2ENR, 16, "tim9", "apb2_mul" }, | |
293 | { STM32F4_RCC_APB2ENR, 17, "tim10", "apb2_mul" }, | |
294 | { STM32F4_RCC_APB2ENR, 18, "tim11", "apb2_mul" }, | |
295 | { STM32F4_RCC_APB2ENR, 20, "spi5", "apb2_div" }, | |
296 | { STM32F4_RCC_APB2ENR, 21, "spi6", "apb2_div" }, | |
297 | { STM32F4_RCC_APB2ENR, 22, "sai1", "apb2_div" }, | |
298 | { STM32F4_RCC_APB2ENR, 23, "sai2", "apb2_div" }, | |
299 | { STM32F4_RCC_APB2ENR, 26, "ltdc", "apb2_div" }, | |
300 | }; | |
301 | ||
358bdf89 DT |
302 | /* |
303 | * This bitmask tells us which bit offsets (0..192) on STM32F4[23]xxx | |
304 | * have gate bits associated with them. Its combined hweight is 71. | |
305 | */ | |
a064a07f GF |
306 | #define MAX_GATE_MAP 3 |
307 | ||
308 | static const u64 stm32f42xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull, | |
309 | 0x0000000000000001ull, | |
310 | 0x04777f33f6fec9ffull }; | |
311 | ||
312 | static const u64 stm32f46xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull, | |
313 | 0x0000000000000003ull, | |
314 | 0x0c777f33f6fec9ffull }; | |
315 | ||
88c9b70b GF |
316 | static const u64 stm32f746_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull, |
317 | 0x0000000000000003ull, | |
318 | 0x04f77f033e01c9ffull }; | |
319 | ||
a064a07f GF |
320 | static const u64 *stm32f4_gate_map; |
321 | ||
322 | static struct clk_hw **clks; | |
358bdf89 | 323 | |
358bdf89 DT |
324 | static DEFINE_SPINLOCK(stm32f4_clk_lock); |
325 | static void __iomem *base; | |
326 | ||
861adc44 GF |
327 | static struct regmap *pdrm; |
328 | ||
88c9b70b GF |
329 | static int stm32fx_end_primary_clk; |
330 | ||
358bdf89 DT |
331 | /* |
332 | * "Multiplier" device for APBx clocks. | |
333 | * | |
334 | * The APBx dividers are power-of-two dividers and, if *not* running in 1:1 | |
335 | * mode, they also tap out the one of the low order state bits to run the | |
336 | * timers. ST datasheets represent this feature as a (conditional) clock | |
337 | * multiplier. | |
338 | */ | |
339 | struct clk_apb_mul { | |
340 | struct clk_hw hw; | |
341 | u8 bit_idx; | |
342 | }; | |
343 | ||
344 | #define to_clk_apb_mul(_hw) container_of(_hw, struct clk_apb_mul, hw) | |
345 | ||
346 | static unsigned long clk_apb_mul_recalc_rate(struct clk_hw *hw, | |
347 | unsigned long parent_rate) | |
348 | { | |
349 | struct clk_apb_mul *am = to_clk_apb_mul(hw); | |
350 | ||
351 | if (readl(base + STM32F4_RCC_CFGR) & BIT(am->bit_idx)) | |
352 | return parent_rate * 2; | |
353 | ||
354 | return parent_rate; | |
355 | } | |
356 | ||
357 | static long clk_apb_mul_round_rate(struct clk_hw *hw, unsigned long rate, | |
358 | unsigned long *prate) | |
359 | { | |
360 | struct clk_apb_mul *am = to_clk_apb_mul(hw); | |
361 | unsigned long mult = 1; | |
362 | ||
363 | if (readl(base + STM32F4_RCC_CFGR) & BIT(am->bit_idx)) | |
364 | mult = 2; | |
365 | ||
98d8a60e | 366 | if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) { |
358bdf89 DT |
367 | unsigned long best_parent = rate / mult; |
368 | ||
17ae4b40 | 369 | *prate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent); |
358bdf89 DT |
370 | } |
371 | ||
372 | return *prate * mult; | |
373 | } | |
374 | ||
375 | static int clk_apb_mul_set_rate(struct clk_hw *hw, unsigned long rate, | |
376 | unsigned long parent_rate) | |
377 | { | |
378 | /* | |
379 | * We must report success but we can do so unconditionally because | |
380 | * clk_apb_mul_round_rate returns values that ensure this call is a | |
381 | * nop. | |
382 | */ | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
387 | static const struct clk_ops clk_apb_mul_factor_ops = { | |
388 | .round_rate = clk_apb_mul_round_rate, | |
389 | .set_rate = clk_apb_mul_set_rate, | |
390 | .recalc_rate = clk_apb_mul_recalc_rate, | |
391 | }; | |
392 | ||
393 | static struct clk *clk_register_apb_mul(struct device *dev, const char *name, | |
394 | const char *parent_name, | |
395 | unsigned long flags, u8 bit_idx) | |
396 | { | |
397 | struct clk_apb_mul *am; | |
398 | struct clk_init_data init; | |
399 | struct clk *clk; | |
400 | ||
401 | am = kzalloc(sizeof(*am), GFP_KERNEL); | |
402 | if (!am) | |
403 | return ERR_PTR(-ENOMEM); | |
404 | ||
405 | am->bit_idx = bit_idx; | |
406 | am->hw.init = &init; | |
407 | ||
408 | init.name = name; | |
409 | init.ops = &clk_apb_mul_factor_ops; | |
410 | init.flags = flags; | |
411 | init.parent_names = &parent_name; | |
412 | init.num_parents = 1; | |
413 | ||
414 | clk = clk_register(dev, &am->hw); | |
415 | ||
416 | if (IS_ERR(clk)) | |
417 | kfree(am); | |
418 | ||
419 | return clk; | |
420 | } | |
421 | ||
83135ad3 GF |
422 | enum { |
423 | PLL, | |
424 | PLL_I2S, | |
425 | PLL_SAI, | |
426 | }; | |
427 | ||
428 | static const struct clk_div_table pll_divp_table[] = { | |
429 | { 0, 2 }, { 1, 4 }, { 2, 6 }, { 3, 8 }, { 0 } | |
430 | }; | |
431 | ||
ef189104 GF |
432 | static const struct clk_div_table pll_divq_table[] = { |
433 | { 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 }, { 7, 7 }, | |
434 | { 8, 8 }, { 9, 9 }, { 10, 10 }, { 11, 11 }, { 12, 12 }, { 13, 13 }, | |
435 | { 14, 14 }, { 15, 15 }, | |
436 | { 0 } | |
437 | }; | |
438 | ||
83135ad3 GF |
439 | static const struct clk_div_table pll_divr_table[] = { |
440 | { 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 }, { 7, 7 }, { 0 } | |
441 | }; | |
442 | ||
443 | struct stm32f4_pll { | |
444 | spinlock_t *lock; | |
445 | struct clk_gate gate; | |
446 | u8 offset; | |
447 | u8 bit_rdy_idx; | |
448 | u8 status; | |
449 | u8 n_start; | |
450 | }; | |
451 | ||
452 | #define to_stm32f4_pll(_gate) container_of(_gate, struct stm32f4_pll, gate) | |
453 | ||
517633ef GF |
454 | struct stm32f4_pll_post_div_data { |
455 | int idx; | |
456 | u8 pll_num; | |
457 | const char *name; | |
458 | const char *parent; | |
459 | u8 flag; | |
460 | u8 offset; | |
461 | u8 shift; | |
462 | u8 width; | |
463 | u8 flag_div; | |
464 | const struct clk_div_table *div_table; | |
465 | }; | |
466 | ||
83135ad3 GF |
467 | struct stm32f4_vco_data { |
468 | const char *vco_name; | |
469 | u8 offset; | |
470 | u8 bit_idx; | |
471 | u8 bit_rdy_idx; | |
472 | }; | |
473 | ||
474 | static const struct stm32f4_vco_data vco_data[] = { | |
475 | { "vco", STM32F4_RCC_PLLCFGR, 24, 25 }, | |
476 | { "vco-i2s", STM32F4_RCC_PLLI2SCFGR, 26, 27 }, | |
477 | { "vco-sai", STM32F4_RCC_PLLSAICFGR, 28, 29 }, | |
478 | }; | |
479 | ||
517633ef GF |
480 | |
481 | static const struct clk_div_table post_divr_table[] = { | |
482 | { 0, 2 }, { 1, 4 }, { 2, 8 }, { 3, 16 }, { 0 } | |
483 | }; | |
484 | ||
485 | #define MAX_POST_DIV 3 | |
486 | static const struct stm32f4_pll_post_div_data post_div_data[MAX_POST_DIV] = { | |
487 | { CLK_I2SQ_PDIV, PLL_I2S, "plli2s-q-div", "plli2s-q", | |
488 | CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 0, 5, 0, NULL}, | |
489 | ||
490 | { CLK_SAIQ_PDIV, PLL_SAI, "pllsai-q-div", "pllsai-q", | |
491 | CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 8, 5, 0, NULL }, | |
492 | ||
493 | { NO_IDX, PLL_SAI, "pllsai-r-div", "pllsai-r", CLK_SET_RATE_PARENT, | |
494 | STM32F4_RCC_DCKCFGR, 16, 2, 0, post_divr_table }, | |
495 | }; | |
496 | ||
83135ad3 GF |
497 | struct stm32f4_div_data { |
498 | u8 shift; | |
499 | u8 width; | |
500 | u8 flag_div; | |
501 | const struct clk_div_table *div_table; | |
502 | }; | |
503 | ||
504 | #define MAX_PLL_DIV 3 | |
505 | static const struct stm32f4_div_data div_data[MAX_PLL_DIV] = { | |
ef189104 GF |
506 | { 16, 2, 0, pll_divp_table }, |
507 | { 24, 4, 0, pll_divq_table }, | |
508 | { 28, 3, 0, pll_divr_table }, | |
83135ad3 GF |
509 | }; |
510 | ||
511 | struct stm32f4_pll_data { | |
512 | u8 pll_num; | |
513 | u8 n_start; | |
514 | const char *div_name[MAX_PLL_DIV]; | |
515 | }; | |
516 | ||
517 | static const struct stm32f4_pll_data stm32f429_pll[MAX_PLL_DIV] = { | |
518 | { PLL, 192, { "pll", "pll48", NULL } }, | |
519 | { PLL_I2S, 192, { NULL, "plli2s-q", "plli2s-r" } }, | |
520 | { PLL_SAI, 49, { NULL, "pllsai-q", "pllsai-r" } }, | |
521 | }; | |
522 | ||
523 | static const struct stm32f4_pll_data stm32f469_pll[MAX_PLL_DIV] = { | |
524 | { PLL, 50, { "pll", "pll-q", NULL } }, | |
525 | { PLL_I2S, 50, { "plli2s-p", "plli2s-q", "plli2s-r" } }, | |
526 | { PLL_SAI, 50, { "pllsai-p", "pllsai-q", "pllsai-r" } }, | |
527 | }; | |
528 | ||
529 | static int stm32f4_pll_is_enabled(struct clk_hw *hw) | |
530 | { | |
531 | return clk_gate_ops.is_enabled(hw); | |
532 | } | |
533 | ||
ac03d8b3 GF |
534 | #define PLL_TIMEOUT 10000 |
535 | ||
83135ad3 GF |
536 | static int stm32f4_pll_enable(struct clk_hw *hw) |
537 | { | |
538 | struct clk_gate *gate = to_clk_gate(hw); | |
539 | struct stm32f4_pll *pll = to_stm32f4_pll(gate); | |
ac03d8b3 GF |
540 | int bit_status; |
541 | unsigned int timeout = PLL_TIMEOUT; | |
83135ad3 | 542 | |
ac03d8b3 GF |
543 | if (clk_gate_ops.is_enabled(hw)) |
544 | return 0; | |
545 | ||
546 | clk_gate_ops.enable(hw); | |
83135ad3 | 547 | |
ac03d8b3 GF |
548 | do { |
549 | bit_status = !(readl(gate->reg) & BIT(pll->bit_rdy_idx)); | |
83135ad3 | 550 | |
ac03d8b3 GF |
551 | } while (bit_status && --timeout); |
552 | ||
553 | return bit_status; | |
83135ad3 GF |
554 | } |
555 | ||
556 | static void stm32f4_pll_disable(struct clk_hw *hw) | |
557 | { | |
558 | clk_gate_ops.disable(hw); | |
559 | } | |
560 | ||
561 | static unsigned long stm32f4_pll_recalc(struct clk_hw *hw, | |
562 | unsigned long parent_rate) | |
563 | { | |
564 | struct clk_gate *gate = to_clk_gate(hw); | |
565 | struct stm32f4_pll *pll = to_stm32f4_pll(gate); | |
566 | unsigned long n; | |
567 | ||
568 | n = (readl(base + pll->offset) >> 6) & 0x1ff; | |
569 | ||
570 | return parent_rate * n; | |
571 | } | |
572 | ||
573 | static long stm32f4_pll_round_rate(struct clk_hw *hw, unsigned long rate, | |
574 | unsigned long *prate) | |
358bdf89 | 575 | { |
83135ad3 GF |
576 | struct clk_gate *gate = to_clk_gate(hw); |
577 | struct stm32f4_pll *pll = to_stm32f4_pll(gate); | |
578 | unsigned long n; | |
358bdf89 | 579 | |
83135ad3 | 580 | n = rate / *prate; |
358bdf89 | 581 | |
83135ad3 GF |
582 | if (n < pll->n_start) |
583 | n = pll->n_start; | |
584 | else if (n > 432) | |
585 | n = 432; | |
586 | ||
587 | return *prate * n; | |
588 | } | |
589 | ||
590 | static int stm32f4_pll_set_rate(struct clk_hw *hw, unsigned long rate, | |
591 | unsigned long parent_rate) | |
592 | { | |
593 | struct clk_gate *gate = to_clk_gate(hw); | |
594 | struct stm32f4_pll *pll = to_stm32f4_pll(gate); | |
595 | ||
596 | unsigned long n; | |
597 | unsigned long val; | |
598 | int pll_state; | |
599 | ||
600 | pll_state = stm32f4_pll_is_enabled(hw); | |
601 | ||
602 | if (pll_state) | |
603 | stm32f4_pll_disable(hw); | |
604 | ||
605 | n = rate / parent_rate; | |
606 | ||
607 | val = readl(base + pll->offset) & ~(0x1ff << 6); | |
608 | ||
609 | writel(val | ((n & 0x1ff) << 6), base + pll->offset); | |
610 | ||
611 | if (pll_state) | |
612 | stm32f4_pll_enable(hw); | |
613 | ||
614 | return 0; | |
615 | } | |
616 | ||
617 | static const struct clk_ops stm32f4_pll_gate_ops = { | |
618 | .enable = stm32f4_pll_enable, | |
619 | .disable = stm32f4_pll_disable, | |
620 | .is_enabled = stm32f4_pll_is_enabled, | |
621 | .recalc_rate = stm32f4_pll_recalc, | |
622 | .round_rate = stm32f4_pll_round_rate, | |
623 | .set_rate = stm32f4_pll_set_rate, | |
624 | }; | |
625 | ||
626 | struct stm32f4_pll_div { | |
627 | struct clk_divider div; | |
628 | struct clk_hw *hw_pll; | |
629 | }; | |
630 | ||
631 | #define to_pll_div_clk(_div) container_of(_div, struct stm32f4_pll_div, div) | |
632 | ||
633 | static unsigned long stm32f4_pll_div_recalc_rate(struct clk_hw *hw, | |
634 | unsigned long parent_rate) | |
635 | { | |
636 | return clk_divider_ops.recalc_rate(hw, parent_rate); | |
637 | } | |
638 | ||
639 | static long stm32f4_pll_div_round_rate(struct clk_hw *hw, unsigned long rate, | |
640 | unsigned long *prate) | |
641 | { | |
642 | return clk_divider_ops.round_rate(hw, rate, prate); | |
643 | } | |
644 | ||
645 | static int stm32f4_pll_div_set_rate(struct clk_hw *hw, unsigned long rate, | |
646 | unsigned long parent_rate) | |
358bdf89 | 647 | { |
83135ad3 GF |
648 | int pll_state, ret; |
649 | ||
650 | struct clk_divider *div = to_clk_divider(hw); | |
651 | struct stm32f4_pll_div *pll_div = to_pll_div_clk(div); | |
652 | ||
653 | pll_state = stm32f4_pll_is_enabled(pll_div->hw_pll); | |
654 | ||
655 | if (pll_state) | |
656 | stm32f4_pll_disable(pll_div->hw_pll); | |
657 | ||
658 | ret = clk_divider_ops.set_rate(hw, rate, parent_rate); | |
358bdf89 | 659 | |
83135ad3 GF |
660 | if (pll_state) |
661 | stm32f4_pll_enable(pll_div->hw_pll); | |
358bdf89 | 662 | |
83135ad3 GF |
663 | return ret; |
664 | } | |
665 | ||
666 | static const struct clk_ops stm32f4_pll_div_ops = { | |
667 | .recalc_rate = stm32f4_pll_div_recalc_rate, | |
668 | .round_rate = stm32f4_pll_div_round_rate, | |
669 | .set_rate = stm32f4_pll_div_set_rate, | |
670 | }; | |
671 | ||
672 | static struct clk_hw *clk_register_pll_div(const char *name, | |
673 | const char *parent_name, unsigned long flags, | |
674 | void __iomem *reg, u8 shift, u8 width, | |
675 | u8 clk_divider_flags, const struct clk_div_table *table, | |
676 | struct clk_hw *pll_hw, spinlock_t *lock) | |
677 | { | |
678 | struct stm32f4_pll_div *pll_div; | |
679 | struct clk_hw *hw; | |
680 | struct clk_init_data init; | |
681 | int ret; | |
682 | ||
683 | /* allocate the divider */ | |
684 | pll_div = kzalloc(sizeof(*pll_div), GFP_KERNEL); | |
685 | if (!pll_div) | |
686 | return ERR_PTR(-ENOMEM); | |
687 | ||
688 | init.name = name; | |
689 | init.ops = &stm32f4_pll_div_ops; | |
690 | init.flags = flags; | |
691 | init.parent_names = (parent_name ? &parent_name : NULL); | |
692 | init.num_parents = (parent_name ? 1 : 0); | |
693 | ||
694 | /* struct clk_divider assignments */ | |
695 | pll_div->div.reg = reg; | |
696 | pll_div->div.shift = shift; | |
697 | pll_div->div.width = width; | |
698 | pll_div->div.flags = clk_divider_flags; | |
699 | pll_div->div.lock = lock; | |
700 | pll_div->div.table = table; | |
701 | pll_div->div.hw.init = &init; | |
702 | ||
703 | pll_div->hw_pll = pll_hw; | |
704 | ||
705 | /* register the clock */ | |
706 | hw = &pll_div->div.hw; | |
707 | ret = clk_hw_register(NULL, hw); | |
708 | if (ret) { | |
709 | kfree(pll_div); | |
710 | hw = ERR_PTR(ret); | |
711 | } | |
712 | ||
713 | return hw; | |
714 | } | |
715 | ||
716 | static struct clk_hw *stm32f4_rcc_register_pll(const char *pllsrc, | |
717 | const struct stm32f4_pll_data *data, spinlock_t *lock) | |
718 | { | |
719 | struct stm32f4_pll *pll; | |
720 | struct clk_init_data init = { NULL }; | |
721 | void __iomem *reg; | |
722 | struct clk_hw *pll_hw; | |
723 | int ret; | |
724 | int i; | |
725 | const struct stm32f4_vco_data *vco; | |
726 | ||
727 | ||
728 | pll = kzalloc(sizeof(*pll), GFP_KERNEL); | |
729 | if (!pll) | |
730 | return ERR_PTR(-ENOMEM); | |
731 | ||
732 | vco = &vco_data[data->pll_num]; | |
733 | ||
734 | init.name = vco->vco_name; | |
735 | init.ops = &stm32f4_pll_gate_ops; | |
736 | init.flags = CLK_SET_RATE_GATE; | |
737 | init.parent_names = &pllsrc; | |
738 | init.num_parents = 1; | |
739 | ||
740 | pll->gate.lock = lock; | |
741 | pll->gate.reg = base + STM32F4_RCC_CR; | |
742 | pll->gate.bit_idx = vco->bit_idx; | |
743 | pll->gate.hw.init = &init; | |
744 | ||
745 | pll->offset = vco->offset; | |
746 | pll->n_start = data->n_start; | |
747 | pll->bit_rdy_idx = vco->bit_rdy_idx; | |
748 | pll->status = (readl(base + STM32F4_RCC_CR) >> vco->bit_idx) & 0x1; | |
749 | ||
750 | reg = base + pll->offset; | |
751 | ||
752 | pll_hw = &pll->gate.hw; | |
753 | ret = clk_hw_register(NULL, pll_hw); | |
754 | if (ret) { | |
755 | kfree(pll); | |
756 | return ERR_PTR(ret); | |
757 | } | |
758 | ||
759 | for (i = 0; i < MAX_PLL_DIV; i++) | |
760 | if (data->div_name[i]) | |
761 | clk_register_pll_div(data->div_name[i], | |
762 | vco->vco_name, | |
763 | 0, | |
764 | reg, | |
765 | div_data[i].shift, | |
766 | div_data[i].width, | |
767 | div_data[i].flag_div, | |
768 | div_data[i].div_table, | |
769 | pll_hw, | |
770 | lock); | |
771 | return pll_hw; | |
358bdf89 DT |
772 | } |
773 | ||
774 | /* | |
775 | * Converts the primary and secondary indices (as they appear in DT) to an | |
776 | * offset into our struct clock array. | |
777 | */ | |
778 | static int stm32f4_rcc_lookup_clk_idx(u8 primary, u8 secondary) | |
779 | { | |
a064a07f | 780 | u64 table[MAX_GATE_MAP]; |
358bdf89 DT |
781 | |
782 | if (primary == 1) { | |
88c9b70b | 783 | if (WARN_ON(secondary >= stm32fx_end_primary_clk)) |
358bdf89 DT |
784 | return -EINVAL; |
785 | return secondary; | |
786 | } | |
787 | ||
a064a07f | 788 | memcpy(table, stm32f4_gate_map, sizeof(table)); |
358bdf89 DT |
789 | |
790 | /* only bits set in table can be used as indices */ | |
15ab3827 | 791 | if (WARN_ON(secondary >= BITS_PER_BYTE * sizeof(table) || |
358bdf89 DT |
792 | 0 == (table[BIT_ULL_WORD(secondary)] & |
793 | BIT_ULL_MASK(secondary)))) | |
794 | return -EINVAL; | |
795 | ||
796 | /* mask out bits above our current index */ | |
797 | table[BIT_ULL_WORD(secondary)] &= | |
798 | GENMASK_ULL(secondary % BITS_PER_LONG_LONG, 0); | |
799 | ||
88c9b70b | 800 | return stm32fx_end_primary_clk - 1 + hweight64(table[0]) + |
358bdf89 DT |
801 | (BIT_ULL_WORD(secondary) >= 1 ? hweight64(table[1]) : 0) + |
802 | (BIT_ULL_WORD(secondary) >= 2 ? hweight64(table[2]) : 0); | |
803 | } | |
804 | ||
4e950d1e | 805 | static struct clk_hw * |
358bdf89 DT |
806 | stm32f4_rcc_lookup_clk(struct of_phandle_args *clkspec, void *data) |
807 | { | |
808 | int i = stm32f4_rcc_lookup_clk_idx(clkspec->args[0], clkspec->args[1]); | |
809 | ||
810 | if (i < 0) | |
811 | return ERR_PTR(-EINVAL); | |
812 | ||
813 | return clks[i]; | |
814 | } | |
815 | ||
861adc44 GF |
816 | #define to_rgclk(_rgate) container_of(_rgate, struct stm32_rgate, gate) |
817 | ||
818 | static inline void disable_power_domain_write_protection(void) | |
819 | { | |
820 | if (pdrm) | |
821 | regmap_update_bits(pdrm, 0x00, (1 << 8), (1 << 8)); | |
822 | } | |
823 | ||
824 | static inline void enable_power_domain_write_protection(void) | |
825 | { | |
826 | if (pdrm) | |
827 | regmap_update_bits(pdrm, 0x00, (1 << 8), (0 << 8)); | |
828 | } | |
829 | ||
4261a881 GF |
830 | static inline void sofware_reset_backup_domain(void) |
831 | { | |
832 | unsigned long val; | |
833 | ||
834 | val = readl(base + STM32F4_RCC_BDCR); | |
835 | writel(val | BIT(16), base + STM32F4_RCC_BDCR); | |
836 | writel(val & ~BIT(16), base + STM32F4_RCC_BDCR); | |
837 | } | |
838 | ||
861adc44 GF |
839 | struct stm32_rgate { |
840 | struct clk_gate gate; | |
841 | u8 bit_rdy_idx; | |
842 | }; | |
843 | ||
ac03d8b3 | 844 | #define RGATE_TIMEOUT 50000 |
861adc44 GF |
845 | |
846 | static int rgclk_enable(struct clk_hw *hw) | |
847 | { | |
848 | struct clk_gate *gate = to_clk_gate(hw); | |
849 | struct stm32_rgate *rgate = to_rgclk(gate); | |
ac03d8b3 GF |
850 | int bit_status; |
851 | unsigned int timeout = RGATE_TIMEOUT; | |
852 | ||
853 | if (clk_gate_ops.is_enabled(hw)) | |
854 | return 0; | |
861adc44 GF |
855 | |
856 | disable_power_domain_write_protection(); | |
857 | ||
858 | clk_gate_ops.enable(hw); | |
859 | ||
ac03d8b3 GF |
860 | do { |
861 | bit_status = !(readl(gate->reg) & BIT(rgate->bit_rdy_idx)); | |
862 | if (bit_status) | |
863 | udelay(100); | |
864 | ||
865 | } while (bit_status && --timeout); | |
861adc44 GF |
866 | |
867 | enable_power_domain_write_protection(); | |
ac03d8b3 GF |
868 | |
869 | return bit_status; | |
861adc44 GF |
870 | } |
871 | ||
872 | static void rgclk_disable(struct clk_hw *hw) | |
873 | { | |
874 | clk_gate_ops.disable(hw); | |
875 | } | |
876 | ||
877 | static int rgclk_is_enabled(struct clk_hw *hw) | |
878 | { | |
879 | return clk_gate_ops.is_enabled(hw); | |
880 | } | |
881 | ||
882 | static const struct clk_ops rgclk_ops = { | |
883 | .enable = rgclk_enable, | |
884 | .disable = rgclk_disable, | |
885 | .is_enabled = rgclk_is_enabled, | |
886 | }; | |
887 | ||
888 | static struct clk_hw *clk_register_rgate(struct device *dev, const char *name, | |
889 | const char *parent_name, unsigned long flags, | |
890 | void __iomem *reg, u8 bit_idx, u8 bit_rdy_idx, | |
891 | u8 clk_gate_flags, spinlock_t *lock) | |
892 | { | |
893 | struct stm32_rgate *rgate; | |
894 | struct clk_init_data init = { NULL }; | |
895 | struct clk_hw *hw; | |
896 | int ret; | |
897 | ||
898 | rgate = kzalloc(sizeof(*rgate), GFP_KERNEL); | |
899 | if (!rgate) | |
900 | return ERR_PTR(-ENOMEM); | |
901 | ||
902 | init.name = name; | |
903 | init.ops = &rgclk_ops; | |
904 | init.flags = flags; | |
905 | init.parent_names = &parent_name; | |
906 | init.num_parents = 1; | |
907 | ||
908 | rgate->bit_rdy_idx = bit_rdy_idx; | |
909 | ||
910 | rgate->gate.lock = lock; | |
911 | rgate->gate.reg = reg; | |
912 | rgate->gate.bit_idx = bit_idx; | |
913 | rgate->gate.hw.init = &init; | |
914 | ||
915 | hw = &rgate->gate.hw; | |
916 | ret = clk_hw_register(dev, hw); | |
917 | if (ret) { | |
918 | kfree(rgate); | |
919 | hw = ERR_PTR(ret); | |
920 | } | |
921 | ||
922 | return hw; | |
923 | } | |
924 | ||
4261a881 GF |
925 | static int cclk_gate_enable(struct clk_hw *hw) |
926 | { | |
927 | int ret; | |
928 | ||
929 | disable_power_domain_write_protection(); | |
930 | ||
931 | ret = clk_gate_ops.enable(hw); | |
932 | ||
933 | enable_power_domain_write_protection(); | |
934 | ||
935 | return ret; | |
936 | } | |
937 | ||
938 | static void cclk_gate_disable(struct clk_hw *hw) | |
939 | { | |
940 | disable_power_domain_write_protection(); | |
941 | ||
942 | clk_gate_ops.disable(hw); | |
943 | ||
944 | enable_power_domain_write_protection(); | |
945 | } | |
946 | ||
947 | static int cclk_gate_is_enabled(struct clk_hw *hw) | |
948 | { | |
949 | return clk_gate_ops.is_enabled(hw); | |
950 | } | |
951 | ||
952 | static const struct clk_ops cclk_gate_ops = { | |
953 | .enable = cclk_gate_enable, | |
954 | .disable = cclk_gate_disable, | |
955 | .is_enabled = cclk_gate_is_enabled, | |
956 | }; | |
957 | ||
958 | static u8 cclk_mux_get_parent(struct clk_hw *hw) | |
959 | { | |
960 | return clk_mux_ops.get_parent(hw); | |
961 | } | |
962 | ||
963 | static int cclk_mux_set_parent(struct clk_hw *hw, u8 index) | |
964 | { | |
965 | int ret; | |
966 | ||
967 | disable_power_domain_write_protection(); | |
968 | ||
969 | sofware_reset_backup_domain(); | |
970 | ||
971 | ret = clk_mux_ops.set_parent(hw, index); | |
972 | ||
973 | enable_power_domain_write_protection(); | |
974 | ||
975 | return ret; | |
976 | } | |
977 | ||
978 | static const struct clk_ops cclk_mux_ops = { | |
979 | .get_parent = cclk_mux_get_parent, | |
980 | .set_parent = cclk_mux_set_parent, | |
981 | }; | |
982 | ||
983 | static struct clk_hw *stm32_register_cclk(struct device *dev, const char *name, | |
984 | const char * const *parent_names, int num_parents, | |
985 | void __iomem *reg, u8 bit_idx, u8 shift, unsigned long flags, | |
986 | spinlock_t *lock) | |
987 | { | |
988 | struct clk_hw *hw; | |
989 | struct clk_gate *gate; | |
990 | struct clk_mux *mux; | |
991 | ||
992 | gate = kzalloc(sizeof(*gate), GFP_KERNEL); | |
993 | if (!gate) { | |
994 | hw = ERR_PTR(-EINVAL); | |
995 | goto fail; | |
996 | } | |
997 | ||
998 | mux = kzalloc(sizeof(*mux), GFP_KERNEL); | |
999 | if (!mux) { | |
1000 | kfree(gate); | |
1001 | hw = ERR_PTR(-EINVAL); | |
1002 | goto fail; | |
1003 | } | |
1004 | ||
1005 | gate->reg = reg; | |
1006 | gate->bit_idx = bit_idx; | |
1007 | gate->flags = 0; | |
1008 | gate->lock = lock; | |
1009 | ||
1010 | mux->reg = reg; | |
1011 | mux->shift = shift; | |
1012 | mux->mask = 3; | |
1013 | mux->flags = 0; | |
1014 | ||
1015 | hw = clk_hw_register_composite(dev, name, parent_names, num_parents, | |
1016 | &mux->hw, &cclk_mux_ops, | |
1017 | NULL, NULL, | |
1018 | &gate->hw, &cclk_gate_ops, | |
1019 | flags); | |
1020 | ||
1021 | if (IS_ERR(hw)) { | |
1022 | kfree(gate); | |
1023 | kfree(mux); | |
1024 | } | |
1025 | ||
1026 | fail: | |
1027 | return hw; | |
1028 | } | |
1029 | ||
358bdf89 DT |
1030 | static const char *sys_parents[] __initdata = { "hsi", NULL, "pll" }; |
1031 | ||
1032 | static const struct clk_div_table ahb_div_table[] = { | |
1033 | { 0x0, 1 }, { 0x1, 1 }, { 0x2, 1 }, { 0x3, 1 }, | |
1034 | { 0x4, 1 }, { 0x5, 1 }, { 0x6, 1 }, { 0x7, 1 }, | |
1035 | { 0x8, 2 }, { 0x9, 4 }, { 0xa, 8 }, { 0xb, 16 }, | |
1036 | { 0xc, 64 }, { 0xd, 128 }, { 0xe, 256 }, { 0xf, 512 }, | |
1037 | { 0 }, | |
1038 | }; | |
1039 | ||
1040 | static const struct clk_div_table apb_div_table[] = { | |
1041 | { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, | |
1042 | { 4, 2 }, { 5, 4 }, { 6, 8 }, { 7, 16 }, | |
1043 | { 0 }, | |
1044 | }; | |
1045 | ||
4261a881 GF |
1046 | static const char *rtc_parents[4] = { |
1047 | "no-clock", "lse", "lsi", "hse-rtc" | |
1048 | }; | |
1049 | ||
daf2d117 GF |
1050 | static const char *lcd_parent[1] = { "pllsai-r-div" }; |
1051 | ||
12696bac GF |
1052 | static const char *i2s_parents[2] = { "plli2s-r", NULL }; |
1053 | ||
62710c12 GF |
1054 | static const char *sai_parents[4] = { "pllsai-q-div", "plli2s-q-div", NULL, |
1055 | "no-clock" }; | |
1056 | ||
844ca23f GF |
1057 | static const char *pll48_parents[2] = { "pll-q", "pllsai-p" }; |
1058 | ||
1059 | static const char *sdmux_parents[2] = { "pll48", "sys" }; | |
1060 | ||
88c9b70b GF |
1061 | static const char *hdmi_parents[2] = { "lse", "hsi_div488" }; |
1062 | ||
1063 | static const char *spdif_parent[1] = { "plli2s-p" }; | |
1064 | ||
1065 | static const char *lptim_parent[4] = { "apb1_mul", "lsi", "hsi", "lse" }; | |
1066 | ||
1067 | static const char *uart_parents1[4] = { "apb2_div", "sys", "hsi", "lse" }; | |
1068 | static const char *uart_parents2[4] = { "apb1_div", "sys", "hsi", "lse" }; | |
1069 | ||
1070 | static const char *i2c_parents[4] = { "apb1_div", "sys", "hsi", "no-clock" }; | |
1071 | ||
daf2d117 GF |
1072 | struct stm32_aux_clk { |
1073 | int idx; | |
1074 | const char *name; | |
1075 | const char * const *parent_names; | |
1076 | int num_parents; | |
1077 | int offset_mux; | |
1078 | u8 shift; | |
1079 | u8 mask; | |
1080 | int offset_gate; | |
1081 | u8 bit_idx; | |
1082 | unsigned long flags; | |
1083 | }; | |
1084 | ||
a064a07f GF |
1085 | struct stm32f4_clk_data { |
1086 | const struct stm32f4_gate_data *gates_data; | |
1087 | const u64 *gates_map; | |
1088 | int gates_num; | |
83135ad3 | 1089 | const struct stm32f4_pll_data *pll_data; |
daf2d117 GF |
1090 | const struct stm32_aux_clk *aux_clk; |
1091 | int aux_clk_num; | |
88c9b70b | 1092 | int end_primary; |
daf2d117 GF |
1093 | }; |
1094 | ||
1095 | static const struct stm32_aux_clk stm32f429_aux_clk[] = { | |
1096 | { | |
1097 | CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent), | |
1098 | NO_MUX, 0, 0, | |
1099 | STM32F4_RCC_APB2ENR, 26, | |
1100 | CLK_SET_RATE_PARENT | |
1101 | }, | |
12696bac GF |
1102 | { |
1103 | CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents), | |
1104 | STM32F4_RCC_CFGR, 23, 1, | |
1105 | NO_GATE, 0, | |
1106 | CLK_SET_RATE_PARENT | |
1107 | }, | |
62710c12 GF |
1108 | { |
1109 | CLK_SAI1, "sai1-a", sai_parents, ARRAY_SIZE(sai_parents), | |
1110 | STM32F4_RCC_DCKCFGR, 20, 3, | |
1111 | STM32F4_RCC_APB2ENR, 22, | |
1112 | CLK_SET_RATE_PARENT | |
1113 | }, | |
1114 | { | |
1115 | CLK_SAI2, "sai1-b", sai_parents, ARRAY_SIZE(sai_parents), | |
1116 | STM32F4_RCC_DCKCFGR, 22, 3, | |
1117 | STM32F4_RCC_APB2ENR, 22, | |
1118 | CLK_SET_RATE_PARENT | |
1119 | }, | |
a064a07f GF |
1120 | }; |
1121 | ||
844ca23f GF |
1122 | static const struct stm32_aux_clk stm32f469_aux_clk[] = { |
1123 | { | |
1124 | CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent), | |
1125 | NO_MUX, 0, 0, | |
1126 | STM32F4_RCC_APB2ENR, 26, | |
1127 | CLK_SET_RATE_PARENT | |
1128 | }, | |
1129 | { | |
1130 | CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents), | |
1131 | STM32F4_RCC_CFGR, 23, 1, | |
1132 | NO_GATE, 0, | |
1133 | CLK_SET_RATE_PARENT | |
1134 | }, | |
1135 | { | |
1136 | CLK_SAI1, "sai1-a", sai_parents, ARRAY_SIZE(sai_parents), | |
1137 | STM32F4_RCC_DCKCFGR, 20, 3, | |
1138 | STM32F4_RCC_APB2ENR, 22, | |
1139 | CLK_SET_RATE_PARENT | |
1140 | }, | |
1141 | { | |
1142 | CLK_SAI2, "sai1-b", sai_parents, ARRAY_SIZE(sai_parents), | |
1143 | STM32F4_RCC_DCKCFGR, 22, 3, | |
1144 | STM32F4_RCC_APB2ENR, 22, | |
1145 | CLK_SET_RATE_PARENT | |
1146 | }, | |
1147 | { | |
1148 | NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents), | |
1149 | STM32F4_RCC_DCKCFGR, 27, 1, | |
1150 | NO_GATE, 0, | |
1151 | 0 | |
1152 | }, | |
1153 | { | |
1154 | NO_IDX, "sdmux", sdmux_parents, ARRAY_SIZE(sdmux_parents), | |
1155 | STM32F4_RCC_DCKCFGR, 28, 1, | |
1156 | NO_GATE, 0, | |
1157 | 0 | |
1158 | }, | |
a064a07f GF |
1159 | }; |
1160 | ||
88c9b70b GF |
1161 | static const struct stm32_aux_clk stm32f746_aux_clk[] = { |
1162 | { | |
1163 | CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent), | |
1164 | NO_MUX, 0, 0, | |
1165 | STM32F4_RCC_APB2ENR, 26, | |
1166 | CLK_SET_RATE_PARENT | |
1167 | }, | |
1168 | { | |
1169 | CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents), | |
1170 | STM32F4_RCC_CFGR, 23, 1, | |
1171 | NO_GATE, 0, | |
1172 | CLK_SET_RATE_PARENT | |
1173 | }, | |
1174 | { | |
1175 | CLK_SAI1, "sai1_clk", sai_parents, ARRAY_SIZE(sai_parents), | |
1176 | STM32F4_RCC_DCKCFGR, 20, 3, | |
1177 | STM32F4_RCC_APB2ENR, 22, | |
1178 | CLK_SET_RATE_PARENT | |
1179 | }, | |
1180 | { | |
1181 | CLK_SAI2, "sai2_clk", sai_parents, ARRAY_SIZE(sai_parents), | |
1182 | STM32F4_RCC_DCKCFGR, 22, 3, | |
1183 | STM32F4_RCC_APB2ENR, 23, | |
1184 | CLK_SET_RATE_PARENT | |
1185 | }, | |
1186 | { | |
1187 | NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents), | |
1188 | STM32F7_RCC_DCKCFGR2, 27, 1, | |
1189 | NO_GATE, 0, | |
1190 | 0 | |
1191 | }, | |
1192 | { | |
1193 | NO_IDX, "sdmux", sdmux_parents, ARRAY_SIZE(sdmux_parents), | |
1194 | STM32F7_RCC_DCKCFGR2, 28, 1, | |
1195 | NO_GATE, 0, | |
1196 | 0 | |
1197 | }, | |
1198 | { | |
1199 | CLK_HDMI_CEC, "hdmi-cec", | |
1200 | hdmi_parents, ARRAY_SIZE(hdmi_parents), | |
1201 | STM32F7_RCC_DCKCFGR2, 26, 1, | |
1202 | NO_GATE, 0, | |
1203 | 0 | |
1204 | }, | |
1205 | { | |
1206 | CLK_SPDIF, "spdif-rx", | |
1207 | spdif_parent, ARRAY_SIZE(spdif_parent), | |
1208 | STM32F7_RCC_DCKCFGR2, 22, 3, | |
1209 | STM32F4_RCC_APB2ENR, 23, | |
1210 | CLK_SET_RATE_PARENT | |
1211 | }, | |
1212 | { | |
1213 | CLK_USART1, "usart1", | |
1214 | uart_parents1, ARRAY_SIZE(uart_parents1), | |
1215 | STM32F7_RCC_DCKCFGR2, 0, 3, | |
1216 | STM32F4_RCC_APB2ENR, 4, | |
1217 | CLK_SET_RATE_PARENT, | |
1218 | }, | |
1219 | { | |
1220 | CLK_USART2, "usart2", | |
1221 | uart_parents2, ARRAY_SIZE(uart_parents1), | |
1222 | STM32F7_RCC_DCKCFGR2, 2, 3, | |
1223 | STM32F4_RCC_APB1ENR, 17, | |
1224 | CLK_SET_RATE_PARENT, | |
1225 | }, | |
1226 | { | |
1227 | CLK_USART3, "usart3", | |
1228 | uart_parents2, ARRAY_SIZE(uart_parents1), | |
1229 | STM32F7_RCC_DCKCFGR2, 4, 3, | |
1230 | STM32F4_RCC_APB1ENR, 18, | |
1231 | CLK_SET_RATE_PARENT, | |
1232 | }, | |
1233 | { | |
1234 | CLK_UART4, "uart4", | |
1235 | uart_parents2, ARRAY_SIZE(uart_parents1), | |
1236 | STM32F7_RCC_DCKCFGR2, 6, 3, | |
1237 | STM32F4_RCC_APB1ENR, 19, | |
1238 | CLK_SET_RATE_PARENT, | |
1239 | }, | |
1240 | { | |
1241 | CLK_UART5, "uart5", | |
1242 | uart_parents2, ARRAY_SIZE(uart_parents1), | |
1243 | STM32F7_RCC_DCKCFGR2, 8, 3, | |
1244 | STM32F4_RCC_APB1ENR, 20, | |
1245 | CLK_SET_RATE_PARENT, | |
1246 | }, | |
1247 | { | |
1248 | CLK_USART6, "usart6", | |
1249 | uart_parents1, ARRAY_SIZE(uart_parents1), | |
1250 | STM32F7_RCC_DCKCFGR2, 10, 3, | |
1251 | STM32F4_RCC_APB2ENR, 5, | |
1252 | CLK_SET_RATE_PARENT, | |
1253 | }, | |
1254 | ||
1255 | { | |
1256 | CLK_UART7, "uart7", | |
1257 | uart_parents2, ARRAY_SIZE(uart_parents1), | |
1258 | STM32F7_RCC_DCKCFGR2, 12, 3, | |
1259 | STM32F4_RCC_APB1ENR, 30, | |
1260 | CLK_SET_RATE_PARENT, | |
1261 | }, | |
1262 | { | |
1263 | CLK_UART8, "uart8", | |
1264 | uart_parents2, ARRAY_SIZE(uart_parents1), | |
1265 | STM32F7_RCC_DCKCFGR2, 14, 3, | |
1266 | STM32F4_RCC_APB1ENR, 31, | |
1267 | CLK_SET_RATE_PARENT, | |
1268 | }, | |
1269 | { | |
1270 | CLK_I2C1, "i2c1", | |
1271 | i2c_parents, ARRAY_SIZE(i2c_parents), | |
1272 | STM32F7_RCC_DCKCFGR2, 16, 3, | |
1273 | STM32F4_RCC_APB1ENR, 21, | |
1274 | CLK_SET_RATE_PARENT, | |
1275 | }, | |
1276 | { | |
1277 | CLK_I2C2, "i2c2", | |
1278 | i2c_parents, ARRAY_SIZE(i2c_parents), | |
1279 | STM32F7_RCC_DCKCFGR2, 18, 3, | |
1280 | STM32F4_RCC_APB1ENR, 22, | |
1281 | CLK_SET_RATE_PARENT, | |
1282 | }, | |
1283 | { | |
1284 | CLK_I2C3, "i2c3", | |
1285 | i2c_parents, ARRAY_SIZE(i2c_parents), | |
1286 | STM32F7_RCC_DCKCFGR2, 20, 3, | |
1287 | STM32F4_RCC_APB1ENR, 23, | |
1288 | CLK_SET_RATE_PARENT, | |
1289 | }, | |
1290 | { | |
1291 | CLK_I2C4, "i2c4", | |
1292 | i2c_parents, ARRAY_SIZE(i2c_parents), | |
1293 | STM32F7_RCC_DCKCFGR2, 22, 3, | |
1294 | STM32F4_RCC_APB1ENR, 24, | |
1295 | CLK_SET_RATE_PARENT, | |
1296 | }, | |
1297 | ||
1298 | { | |
1299 | CLK_LPTIMER, "lptim1", | |
1300 | lptim_parent, ARRAY_SIZE(lptim_parent), | |
1301 | STM32F7_RCC_DCKCFGR2, 24, 3, | |
1302 | STM32F4_RCC_APB1ENR, 9, | |
1303 | CLK_SET_RATE_PARENT | |
1304 | }, | |
1305 | }; | |
1306 | ||
a064a07f | 1307 | static const struct stm32f4_clk_data stm32f429_clk_data = { |
88c9b70b | 1308 | .end_primary = END_PRIMARY_CLK, |
a064a07f GF |
1309 | .gates_data = stm32f429_gates, |
1310 | .gates_map = stm32f42xx_gate_map, | |
1311 | .gates_num = ARRAY_SIZE(stm32f429_gates), | |
83135ad3 | 1312 | .pll_data = stm32f429_pll, |
daf2d117 GF |
1313 | .aux_clk = stm32f429_aux_clk, |
1314 | .aux_clk_num = ARRAY_SIZE(stm32f429_aux_clk), | |
a064a07f GF |
1315 | }; |
1316 | ||
1317 | static const struct stm32f4_clk_data stm32f469_clk_data = { | |
88c9b70b | 1318 | .end_primary = END_PRIMARY_CLK, |
a064a07f GF |
1319 | .gates_data = stm32f469_gates, |
1320 | .gates_map = stm32f46xx_gate_map, | |
1321 | .gates_num = ARRAY_SIZE(stm32f469_gates), | |
83135ad3 | 1322 | .pll_data = stm32f469_pll, |
844ca23f GF |
1323 | .aux_clk = stm32f469_aux_clk, |
1324 | .aux_clk_num = ARRAY_SIZE(stm32f469_aux_clk), | |
a064a07f GF |
1325 | }; |
1326 | ||
88c9b70b GF |
1327 | static const struct stm32f4_clk_data stm32f746_clk_data = { |
1328 | .end_primary = END_PRIMARY_CLK_F7, | |
1329 | .gates_data = stm32f746_gates, | |
1330 | .gates_map = stm32f746_gate_map, | |
1331 | .gates_num = ARRAY_SIZE(stm32f746_gates), | |
1332 | .pll_data = stm32f469_pll, | |
1333 | .aux_clk = stm32f746_aux_clk, | |
1334 | .aux_clk_num = ARRAY_SIZE(stm32f746_aux_clk), | |
1335 | }; | |
1336 | ||
a064a07f GF |
1337 | static const struct of_device_id stm32f4_of_match[] = { |
1338 | { | |
1339 | .compatible = "st,stm32f42xx-rcc", | |
1340 | .data = &stm32f429_clk_data | |
1341 | }, | |
1342 | { | |
1343 | .compatible = "st,stm32f469-rcc", | |
1344 | .data = &stm32f469_clk_data | |
1345 | }, | |
88c9b70b GF |
1346 | { |
1347 | .compatible = "st,stm32f746-rcc", | |
1348 | .data = &stm32f746_clk_data | |
1349 | }, | |
a064a07f GF |
1350 | {} |
1351 | }; | |
1352 | ||
daf2d117 GF |
1353 | static struct clk_hw *stm32_register_aux_clk(const char *name, |
1354 | const char * const *parent_names, int num_parents, | |
1355 | int offset_mux, u8 shift, u8 mask, | |
1356 | int offset_gate, u8 bit_idx, | |
1357 | unsigned long flags, spinlock_t *lock) | |
1358 | { | |
1359 | struct clk_hw *hw; | |
89d5dcc4 | 1360 | struct clk_gate *gate = NULL; |
daf2d117 GF |
1361 | struct clk_mux *mux = NULL; |
1362 | struct clk_hw *mux_hw = NULL, *gate_hw = NULL; | |
1363 | const struct clk_ops *mux_ops = NULL, *gate_ops = NULL; | |
1364 | ||
1365 | if (offset_gate != NO_GATE) { | |
1366 | gate = kzalloc(sizeof(*gate), GFP_KERNEL); | |
1367 | if (!gate) { | |
1368 | hw = ERR_PTR(-EINVAL); | |
1369 | goto fail; | |
1370 | } | |
1371 | ||
1372 | gate->reg = base + offset_gate; | |
1373 | gate->bit_idx = bit_idx; | |
1374 | gate->flags = 0; | |
1375 | gate->lock = lock; | |
1376 | gate_hw = &gate->hw; | |
1377 | gate_ops = &clk_gate_ops; | |
1378 | } | |
1379 | ||
1380 | if (offset_mux != NO_MUX) { | |
1381 | mux = kzalloc(sizeof(*mux), GFP_KERNEL); | |
1382 | if (!mux) { | |
daf2d117 GF |
1383 | hw = ERR_PTR(-EINVAL); |
1384 | goto fail; | |
1385 | } | |
1386 | ||
1387 | mux->reg = base + offset_mux; | |
1388 | mux->shift = shift; | |
1389 | mux->mask = mask; | |
1390 | mux->flags = 0; | |
1391 | mux_hw = &mux->hw; | |
1392 | mux_ops = &clk_mux_ops; | |
1393 | } | |
1394 | ||
89d5dcc4 AB |
1395 | if (mux_hw == NULL && gate_hw == NULL) { |
1396 | hw = ERR_PTR(-EINVAL); | |
1397 | goto fail; | |
1398 | } | |
daf2d117 GF |
1399 | |
1400 | hw = clk_hw_register_composite(NULL, name, parent_names, num_parents, | |
1401 | mux_hw, mux_ops, | |
1402 | NULL, NULL, | |
1403 | gate_hw, gate_ops, | |
1404 | flags); | |
1405 | ||
89d5dcc4 | 1406 | fail: |
daf2d117 GF |
1407 | if (IS_ERR(hw)) { |
1408 | kfree(gate); | |
1409 | kfree(mux); | |
1410 | } | |
89d5dcc4 | 1411 | |
daf2d117 GF |
1412 | return hw; |
1413 | } | |
1414 | ||
358bdf89 DT |
1415 | static void __init stm32f4_rcc_init(struct device_node *np) |
1416 | { | |
12696bac | 1417 | const char *hse_clk, *i2s_in_clk; |
358bdf89 | 1418 | int n; |
a064a07f GF |
1419 | const struct of_device_id *match; |
1420 | const struct stm32f4_clk_data *data; | |
83135ad3 GF |
1421 | unsigned long pllcfgr; |
1422 | const char *pllsrc; | |
1423 | unsigned long pllm; | |
358bdf89 DT |
1424 | |
1425 | base = of_iomap(np, 0); | |
1426 | if (!base) { | |
d7b4e737 | 1427 | pr_err("%s: unable to map resource\n", np->name); |
358bdf89 DT |
1428 | return; |
1429 | } | |
1430 | ||
861adc44 GF |
1431 | pdrm = syscon_regmap_lookup_by_phandle(np, "st,syscfg"); |
1432 | if (IS_ERR(pdrm)) { | |
1433 | pdrm = NULL; | |
1434 | pr_warn("%s: Unable to get syscfg\n", __func__); | |
1435 | } | |
1436 | ||
a064a07f GF |
1437 | match = of_match_node(stm32f4_of_match, np); |
1438 | if (WARN_ON(!match)) | |
1439 | return; | |
1440 | ||
1441 | data = match->data; | |
1442 | ||
88c9b70b GF |
1443 | stm32fx_end_primary_clk = data->end_primary; |
1444 | ||
1445 | clks = kmalloc_array(data->gates_num + stm32fx_end_primary_clk, | |
a064a07f GF |
1446 | sizeof(*clks), GFP_KERNEL); |
1447 | if (!clks) | |
1448 | goto fail; | |
1449 | ||
1450 | stm32f4_gate_map = data->gates_map; | |
1451 | ||
358bdf89 DT |
1452 | hse_clk = of_clk_get_parent_name(np, 0); |
1453 | ||
12696bac GF |
1454 | i2s_in_clk = of_clk_get_parent_name(np, 1); |
1455 | ||
1456 | i2s_parents[1] = i2s_in_clk; | |
62710c12 | 1457 | sai_parents[2] = i2s_in_clk; |
12696bac | 1458 | |
88c9b70b GF |
1459 | clks[CLK_HSI] = clk_hw_register_fixed_rate_with_accuracy(NULL, "hsi", |
1460 | NULL, 0, 16000000, 160000); | |
1461 | ||
83135ad3 GF |
1462 | pllcfgr = readl(base + STM32F4_RCC_PLLCFGR); |
1463 | pllsrc = pllcfgr & BIT(22) ? hse_clk : "hsi"; | |
1464 | pllm = pllcfgr & 0x3f; | |
1465 | ||
1466 | clk_hw_register_fixed_factor(NULL, "vco_in", pllsrc, | |
1467 | 0, 1, pllm); | |
1468 | ||
1469 | stm32f4_rcc_register_pll("vco_in", &data->pll_data[0], | |
1470 | &stm32f4_clk_lock); | |
1471 | ||
1472 | clks[PLL_VCO_I2S] = stm32f4_rcc_register_pll("vco_in", | |
1473 | &data->pll_data[1], &stm32f4_clk_lock); | |
1474 | ||
1475 | clks[PLL_VCO_SAI] = stm32f4_rcc_register_pll("vco_in", | |
1476 | &data->pll_data[2], &stm32f4_clk_lock); | |
358bdf89 | 1477 | |
517633ef GF |
1478 | for (n = 0; n < MAX_POST_DIV; n++) { |
1479 | const struct stm32f4_pll_post_div_data *post_div; | |
1480 | struct clk_hw *hw; | |
1481 | ||
1482 | post_div = &post_div_data[n]; | |
1483 | ||
1484 | hw = clk_register_pll_div(post_div->name, | |
1485 | post_div->parent, | |
1486 | post_div->flag, | |
1487 | base + post_div->offset, | |
1488 | post_div->shift, | |
1489 | post_div->width, | |
1490 | post_div->flag_div, | |
1491 | post_div->div_table, | |
1492 | clks[post_div->pll_num], | |
1493 | &stm32f4_clk_lock); | |
1494 | ||
1495 | if (post_div->idx != NO_IDX) | |
1496 | clks[post_div->idx] = hw; | |
1497 | } | |
358bdf89 DT |
1498 | |
1499 | sys_parents[1] = hse_clk; | |
88c9b70b GF |
1500 | |
1501 | clks[CLK_SYSCLK] = clk_hw_register_mux_table( | |
358bdf89 DT |
1502 | NULL, "sys", sys_parents, ARRAY_SIZE(sys_parents), 0, |
1503 | base + STM32F4_RCC_CFGR, 0, 3, 0, NULL, &stm32f4_clk_lock); | |
1504 | ||
1505 | clk_register_divider_table(NULL, "ahb_div", "sys", | |
1506 | CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR, | |
1507 | 4, 4, 0, ahb_div_table, &stm32f4_clk_lock); | |
1508 | ||
1509 | clk_register_divider_table(NULL, "apb1_div", "ahb_div", | |
1510 | CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR, | |
1511 | 10, 3, 0, apb_div_table, &stm32f4_clk_lock); | |
1512 | clk_register_apb_mul(NULL, "apb1_mul", "apb1_div", | |
1513 | CLK_SET_RATE_PARENT, 12); | |
1514 | ||
1515 | clk_register_divider_table(NULL, "apb2_div", "ahb_div", | |
1516 | CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR, | |
1517 | 13, 3, 0, apb_div_table, &stm32f4_clk_lock); | |
1518 | clk_register_apb_mul(NULL, "apb2_mul", "apb2_div", | |
1519 | CLK_SET_RATE_PARENT, 15); | |
1520 | ||
4e950d1e | 1521 | clks[SYSTICK] = clk_hw_register_fixed_factor(NULL, "systick", "ahb_div", |
358bdf89 | 1522 | 0, 1, 8); |
4e950d1e | 1523 | clks[FCLK] = clk_hw_register_fixed_factor(NULL, "fclk", "ahb_div", |
358bdf89 DT |
1524 | 0, 1, 1); |
1525 | ||
a064a07f GF |
1526 | for (n = 0; n < data->gates_num; n++) { |
1527 | const struct stm32f4_gate_data *gd; | |
1528 | unsigned int secondary; | |
1529 | int idx; | |
1530 | ||
1531 | gd = &data->gates_data[n]; | |
1532 | secondary = 8 * (gd->offset - STM32F4_RCC_AHB1ENR) + | |
1533 | gd->bit_idx; | |
1534 | idx = stm32f4_rcc_lookup_clk_idx(0, secondary); | |
358bdf89 DT |
1535 | |
1536 | if (idx < 0) | |
1537 | goto fail; | |
1538 | ||
4e950d1e | 1539 | clks[idx] = clk_hw_register_gate( |
358bdf89 DT |
1540 | NULL, gd->name, gd->parent_name, gd->flags, |
1541 | base + gd->offset, gd->bit_idx, 0, &stm32f4_clk_lock); | |
1542 | ||
334e125b | 1543 | if (IS_ERR(clks[idx])) { |
16673931 RH |
1544 | pr_err("%pOF: Unable to register leaf clock %s\n", |
1545 | np, gd->name); | |
358bdf89 DT |
1546 | goto fail; |
1547 | } | |
1548 | } | |
1549 | ||
861adc44 | 1550 | clks[CLK_LSI] = clk_register_rgate(NULL, "lsi", "clk-lsi", 0, |
ac03d8b3 | 1551 | base + STM32F4_RCC_CSR, 0, 1, 0, &stm32f4_clk_lock); |
861adc44 GF |
1552 | |
1553 | if (IS_ERR(clks[CLK_LSI])) { | |
1554 | pr_err("Unable to register lsi clock\n"); | |
1555 | goto fail; | |
1556 | } | |
1557 | ||
1558 | clks[CLK_LSE] = clk_register_rgate(NULL, "lse", "clk-lse", 0, | |
ac03d8b3 | 1559 | base + STM32F4_RCC_BDCR, 0, 1, 0, &stm32f4_clk_lock); |
861adc44 GF |
1560 | |
1561 | if (IS_ERR(clks[CLK_LSE])) { | |
1562 | pr_err("Unable to register lse clock\n"); | |
1563 | goto fail; | |
1564 | } | |
1565 | ||
4261a881 GF |
1566 | clks[CLK_HSE_RTC] = clk_hw_register_divider(NULL, "hse-rtc", "clk-hse", |
1567 | 0, base + STM32F4_RCC_CFGR, 16, 5, 0, | |
1568 | &stm32f4_clk_lock); | |
1569 | ||
1570 | if (IS_ERR(clks[CLK_HSE_RTC])) { | |
1571 | pr_err("Unable to register hse-rtc clock\n"); | |
1572 | goto fail; | |
1573 | } | |
1574 | ||
1575 | clks[CLK_RTC] = stm32_register_cclk(NULL, "rtc", rtc_parents, 4, | |
1576 | base + STM32F4_RCC_BDCR, 15, 8, 0, &stm32f4_clk_lock); | |
1577 | ||
1578 | if (IS_ERR(clks[CLK_RTC])) { | |
1579 | pr_err("Unable to register rtc clock\n"); | |
1580 | goto fail; | |
1581 | } | |
1582 | ||
daf2d117 GF |
1583 | for (n = 0; n < data->aux_clk_num; n++) { |
1584 | const struct stm32_aux_clk *aux_clk; | |
1585 | struct clk_hw *hw; | |
1586 | ||
1587 | aux_clk = &data->aux_clk[n]; | |
1588 | ||
1589 | hw = stm32_register_aux_clk(aux_clk->name, | |
1590 | aux_clk->parent_names, aux_clk->num_parents, | |
1591 | aux_clk->offset_mux, aux_clk->shift, | |
1592 | aux_clk->mask, aux_clk->offset_gate, | |
1593 | aux_clk->bit_idx, aux_clk->flags, | |
1594 | &stm32f4_clk_lock); | |
1595 | ||
1596 | if (IS_ERR(hw)) { | |
1597 | pr_warn("Unable to register %s clk\n", aux_clk->name); | |
1598 | continue; | |
1599 | } | |
1600 | ||
1601 | if (aux_clk->idx != NO_IDX) | |
1602 | clks[aux_clk->idx] = hw; | |
1603 | } | |
1604 | ||
88c9b70b GF |
1605 | if (of_device_is_compatible(np, "st,stm32f746-rcc")) |
1606 | ||
1607 | clk_hw_register_fixed_factor(NULL, "hsi_div488", "hsi", 0, | |
1608 | 1, 488); | |
1609 | ||
4e950d1e | 1610 | of_clk_add_hw_provider(np, stm32f4_rcc_lookup_clk, NULL); |
358bdf89 DT |
1611 | return; |
1612 | fail: | |
a064a07f | 1613 | kfree(clks); |
358bdf89 DT |
1614 | iounmap(base); |
1615 | } | |
3868f132 GF |
1616 | CLK_OF_DECLARE_DRIVER(stm32f42xx_rcc, "st,stm32f42xx-rcc", stm32f4_rcc_init); |
1617 | CLK_OF_DECLARE_DRIVER(stm32f46xx_rcc, "st,stm32f469-rcc", stm32f4_rcc_init); | |
88c9b70b | 1618 | CLK_OF_DECLARE_DRIVER(stm32f746_rcc, "st,stm32f746-rcc", stm32f4_rcc_init); |