Commit 84a62e6ed7efe769e359aebbeab58b20ea1beba9
Committed by
Mike Turquette
1 parent
e1b53b3d0f
Exists in
smarc-l5.0.0_1.0.0-ga
and in
5 other branches
clk: mmp: add clock definition for pxa910
Initialize the clocks for pxa910 Signed-off-by: Chao Xie <xiechao.mail@gmail.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Showing 2 changed files with 321 additions and 0 deletions Side-by-side Diff
drivers/clk/mmp/Makefile
drivers/clk/mmp/clk-pxa910.c
1 | +/* | |
2 | + * pxa910 clock framework source file | |
3 | + * | |
4 | + * Copyright (C) 2012 Marvell | |
5 | + * Chao Xie <xiechao.mail@gmail.com> | |
6 | + * | |
7 | + * This file is licensed under the terms of the GNU General Public | |
8 | + * License version 2. This program is licensed "as is" without any | |
9 | + * warranty of any kind, whether express or implied. | |
10 | + */ | |
11 | + | |
12 | +#include <linux/module.h> | |
13 | +#include <linux/kernel.h> | |
14 | +#include <linux/spinlock.h> | |
15 | +#include <linux/io.h> | |
16 | +#include <linux/delay.h> | |
17 | +#include <linux/err.h> | |
18 | + | |
19 | +#include <mach/addr-map.h> | |
20 | + | |
21 | +#include "clk.h" | |
22 | + | |
23 | +#define APBC_RTC 0x28 | |
24 | +#define APBC_TWSI0 0x2c | |
25 | +#define APBC_KPC 0x18 | |
26 | +#define APBC_UART0 0x0 | |
27 | +#define APBC_UART1 0x4 | |
28 | +#define APBC_GPIO 0x8 | |
29 | +#define APBC_PWM0 0xc | |
30 | +#define APBC_PWM1 0x10 | |
31 | +#define APBC_PWM2 0x14 | |
32 | +#define APBC_PWM3 0x18 | |
33 | +#define APBC_SSP0 0x1c | |
34 | +#define APBC_SSP1 0x20 | |
35 | +#define APBC_SSP2 0x4c | |
36 | +#define APBCP_TWSI1 0x28 | |
37 | +#define APBCP_UART2 0x1c | |
38 | +#define APMU_SDH0 0x54 | |
39 | +#define APMU_SDH1 0x58 | |
40 | +#define APMU_USB 0x5c | |
41 | +#define APMU_DISP0 0x4c | |
42 | +#define APMU_CCIC0 0x50 | |
43 | +#define APMU_DFC 0x60 | |
44 | +#define MPMU_UART_PLL 0x14 | |
45 | + | |
46 | +static DEFINE_SPINLOCK(clk_lock); | |
47 | + | |
48 | +static struct clk_factor_masks uart_factor_masks = { | |
49 | + .factor = 2, | |
50 | + .num_mask = 0x1fff, | |
51 | + .den_mask = 0x1fff, | |
52 | + .num_shift = 16, | |
53 | + .den_shift = 0, | |
54 | +}; | |
55 | + | |
56 | +static struct clk_factor_tbl uart_factor_tbl[] = { | |
57 | + {.num = 8125, .den = 1536}, /*14.745MHZ */ | |
58 | +}; | |
59 | + | |
60 | +static const char *uart_parent[] = {"pll1_3_16", "uart_pll"}; | |
61 | +static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"}; | |
62 | +static const char *sdh_parent[] = {"pll1_12", "pll1_13"}; | |
63 | +static const char *disp_parent[] = {"pll1_2", "pll1_12"}; | |
64 | +static const char *ccic_parent[] = {"pll1_2", "pll1_12"}; | |
65 | +static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"}; | |
66 | + | |
67 | +void __init pxa910_clk_init(void) | |
68 | +{ | |
69 | + struct clk *clk; | |
70 | + struct clk *uart_pll; | |
71 | + void __iomem *mpmu_base; | |
72 | + void __iomem *apmu_base; | |
73 | + void __iomem *apbcp_base; | |
74 | + void __iomem *apbc_base; | |
75 | + | |
76 | + mpmu_base = ioremap(APB_PHYS_BASE + 0x50000, SZ_4K); | |
77 | + if (mpmu_base == NULL) { | |
78 | + pr_err("error to ioremap MPMU base\n"); | |
79 | + return; | |
80 | + } | |
81 | + | |
82 | + apmu_base = ioremap(AXI_PHYS_BASE + 0x82800, SZ_4K); | |
83 | + if (apmu_base == NULL) { | |
84 | + pr_err("error to ioremap APMU base\n"); | |
85 | + return; | |
86 | + } | |
87 | + | |
88 | + apbcp_base = ioremap(APB_PHYS_BASE + 0x3b000, SZ_4K); | |
89 | + if (apbcp_base == NULL) { | |
90 | + pr_err("error to ioremap APBC extension base\n"); | |
91 | + return; | |
92 | + } | |
93 | + | |
94 | + apbc_base = ioremap(APB_PHYS_BASE + 0x15000, SZ_4K); | |
95 | + if (apbc_base == NULL) { | |
96 | + pr_err("error to ioremap APBC base\n"); | |
97 | + return; | |
98 | + } | |
99 | + | |
100 | + clk = clk_register_fixed_rate(NULL, "clk32", NULL, CLK_IS_ROOT, 3200); | |
101 | + clk_register_clkdev(clk, "clk32", NULL); | |
102 | + | |
103 | + clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, CLK_IS_ROOT, | |
104 | + 26000000); | |
105 | + clk_register_clkdev(clk, "vctcxo", NULL); | |
106 | + | |
107 | + clk = clk_register_fixed_rate(NULL, "pll1", NULL, CLK_IS_ROOT, | |
108 | + 624000000); | |
109 | + clk_register_clkdev(clk, "pll1", NULL); | |
110 | + | |
111 | + clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1", | |
112 | + CLK_SET_RATE_PARENT, 1, 2); | |
113 | + clk_register_clkdev(clk, "pll1_2", NULL); | |
114 | + | |
115 | + clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2", | |
116 | + CLK_SET_RATE_PARENT, 1, 2); | |
117 | + clk_register_clkdev(clk, "pll1_4", NULL); | |
118 | + | |
119 | + clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4", | |
120 | + CLK_SET_RATE_PARENT, 1, 2); | |
121 | + clk_register_clkdev(clk, "pll1_8", NULL); | |
122 | + | |
123 | + clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8", | |
124 | + CLK_SET_RATE_PARENT, 1, 2); | |
125 | + clk_register_clkdev(clk, "pll1_16", NULL); | |
126 | + | |
127 | + clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2", | |
128 | + CLK_SET_RATE_PARENT, 1, 3); | |
129 | + clk_register_clkdev(clk, "pll1_6", NULL); | |
130 | + | |
131 | + clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6", | |
132 | + CLK_SET_RATE_PARENT, 1, 2); | |
133 | + clk_register_clkdev(clk, "pll1_12", NULL); | |
134 | + | |
135 | + clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12", | |
136 | + CLK_SET_RATE_PARENT, 1, 2); | |
137 | + clk_register_clkdev(clk, "pll1_24", NULL); | |
138 | + | |
139 | + clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24", | |
140 | + CLK_SET_RATE_PARENT, 1, 2); | |
141 | + clk_register_clkdev(clk, "pll1_48", NULL); | |
142 | + | |
143 | + clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48", | |
144 | + CLK_SET_RATE_PARENT, 1, 2); | |
145 | + clk_register_clkdev(clk, "pll1_96", NULL); | |
146 | + | |
147 | + clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1", | |
148 | + CLK_SET_RATE_PARENT, 1, 13); | |
149 | + clk_register_clkdev(clk, "pll1_13", NULL); | |
150 | + | |
151 | + clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1", | |
152 | + CLK_SET_RATE_PARENT, 2, 3); | |
153 | + clk_register_clkdev(clk, "pll1_13_1_5", NULL); | |
154 | + | |
155 | + clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1", | |
156 | + CLK_SET_RATE_PARENT, 2, 3); | |
157 | + clk_register_clkdev(clk, "pll1_2_1_5", NULL); | |
158 | + | |
159 | + clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1", | |
160 | + CLK_SET_RATE_PARENT, 3, 16); | |
161 | + clk_register_clkdev(clk, "pll1_3_16", NULL); | |
162 | + | |
163 | + uart_pll = mmp_clk_register_factor("uart_pll", "pll1_4", 0, | |
164 | + mpmu_base + MPMU_UART_PLL, | |
165 | + &uart_factor_masks, uart_factor_tbl, | |
166 | + ARRAY_SIZE(uart_factor_tbl)); | |
167 | + clk_set_rate(uart_pll, 14745600); | |
168 | + clk_register_clkdev(uart_pll, "uart_pll", NULL); | |
169 | + | |
170 | + clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5", | |
171 | + apbc_base + APBC_TWSI0, 10, 0, &clk_lock); | |
172 | + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0"); | |
173 | + | |
174 | + clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5", | |
175 | + apbcp_base + APBCP_TWSI1, 10, 0, &clk_lock); | |
176 | + clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1"); | |
177 | + | |
178 | + clk = mmp_clk_register_apbc("gpio", "vctcxo", | |
179 | + apbc_base + APBC_GPIO, 10, 0, &clk_lock); | |
180 | + clk_register_clkdev(clk, NULL, "pxa-gpio"); | |
181 | + | |
182 | + clk = mmp_clk_register_apbc("kpc", "clk32", | |
183 | + apbc_base + APBC_KPC, 10, 0, &clk_lock); | |
184 | + clk_register_clkdev(clk, NULL, "pxa27x-keypad"); | |
185 | + | |
186 | + clk = mmp_clk_register_apbc("rtc", "clk32", | |
187 | + apbc_base + APBC_RTC, 10, 0, &clk_lock); | |
188 | + clk_register_clkdev(clk, NULL, "sa1100-rtc"); | |
189 | + | |
190 | + clk = mmp_clk_register_apbc("pwm0", "pll1_48", | |
191 | + apbc_base + APBC_PWM0, 10, 0, &clk_lock); | |
192 | + clk_register_clkdev(clk, NULL, "pxa910-pwm.0"); | |
193 | + | |
194 | + clk = mmp_clk_register_apbc("pwm1", "pll1_48", | |
195 | + apbc_base + APBC_PWM1, 10, 0, &clk_lock); | |
196 | + clk_register_clkdev(clk, NULL, "pxa910-pwm.1"); | |
197 | + | |
198 | + clk = mmp_clk_register_apbc("pwm2", "pll1_48", | |
199 | + apbc_base + APBC_PWM2, 10, 0, &clk_lock); | |
200 | + clk_register_clkdev(clk, NULL, "pxa910-pwm.2"); | |
201 | + | |
202 | + clk = mmp_clk_register_apbc("pwm3", "pll1_48", | |
203 | + apbc_base + APBC_PWM3, 10, 0, &clk_lock); | |
204 | + clk_register_clkdev(clk, NULL, "pxa910-pwm.3"); | |
205 | + | |
206 | + clk = clk_register_mux(NULL, "uart0_mux", uart_parent, | |
207 | + ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT, | |
208 | + apbc_base + APBC_UART0, 4, 3, 0, &clk_lock); | |
209 | + clk_set_parent(clk, uart_pll); | |
210 | + clk_register_clkdev(clk, "uart_mux.0", NULL); | |
211 | + | |
212 | + clk = mmp_clk_register_apbc("uart0", "uart0_mux", | |
213 | + apbc_base + APBC_UART0, 10, 0, &clk_lock); | |
214 | + clk_register_clkdev(clk, NULL, "pxa2xx-uart.0"); | |
215 | + | |
216 | + clk = clk_register_mux(NULL, "uart1_mux", uart_parent, | |
217 | + ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT, | |
218 | + apbc_base + APBC_UART1, 4, 3, 0, &clk_lock); | |
219 | + clk_set_parent(clk, uart_pll); | |
220 | + clk_register_clkdev(clk, "uart_mux.1", NULL); | |
221 | + | |
222 | + clk = mmp_clk_register_apbc("uart1", "uart1_mux", | |
223 | + apbc_base + APBC_UART1, 10, 0, &clk_lock); | |
224 | + clk_register_clkdev(clk, NULL, "pxa2xx-uart.1"); | |
225 | + | |
226 | + clk = clk_register_mux(NULL, "uart2_mux", uart_parent, | |
227 | + ARRAY_SIZE(uart_parent), CLK_SET_RATE_PARENT, | |
228 | + apbcp_base + APBCP_UART2, 4, 3, 0, &clk_lock); | |
229 | + clk_set_parent(clk, uart_pll); | |
230 | + clk_register_clkdev(clk, "uart_mux.2", NULL); | |
231 | + | |
232 | + clk = mmp_clk_register_apbc("uart2", "uart2_mux", | |
233 | + apbcp_base + APBCP_UART2, 10, 0, &clk_lock); | |
234 | + clk_register_clkdev(clk, NULL, "pxa2xx-uart.2"); | |
235 | + | |
236 | + clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent, | |
237 | + ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT, | |
238 | + apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock); | |
239 | + clk_register_clkdev(clk, "uart_mux.0", NULL); | |
240 | + | |
241 | + clk = mmp_clk_register_apbc("ssp0", "ssp0_mux", | |
242 | + apbc_base + APBC_SSP0, 10, 0, &clk_lock); | |
243 | + clk_register_clkdev(clk, NULL, "mmp-ssp.0"); | |
244 | + | |
245 | + clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent, | |
246 | + ARRAY_SIZE(ssp_parent), CLK_SET_RATE_PARENT, | |
247 | + apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock); | |
248 | + clk_register_clkdev(clk, "ssp_mux.1", NULL); | |
249 | + | |
250 | + clk = mmp_clk_register_apbc("ssp1", "ssp1_mux", | |
251 | + apbc_base + APBC_SSP1, 10, 0, &clk_lock); | |
252 | + clk_register_clkdev(clk, NULL, "mmp-ssp.1"); | |
253 | + | |
254 | + clk = mmp_clk_register_apmu("dfc", "pll1_4", | |
255 | + apmu_base + APMU_DFC, 0x19b, &clk_lock); | |
256 | + clk_register_clkdev(clk, NULL, "pxa3xx-nand.0"); | |
257 | + | |
258 | + clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent, | |
259 | + ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT, | |
260 | + apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock); | |
261 | + clk_register_clkdev(clk, "sdh0_mux", NULL); | |
262 | + | |
263 | + clk = mmp_clk_register_apmu("sdh0", "sdh_mux", | |
264 | + apmu_base + APMU_SDH0, 0x1b, &clk_lock); | |
265 | + clk_register_clkdev(clk, NULL, "sdhci-pxa.0"); | |
266 | + | |
267 | + clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent, | |
268 | + ARRAY_SIZE(sdh_parent), CLK_SET_RATE_PARENT, | |
269 | + apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock); | |
270 | + clk_register_clkdev(clk, "sdh1_mux", NULL); | |
271 | + | |
272 | + clk = mmp_clk_register_apmu("sdh1", "sdh1_mux", | |
273 | + apmu_base + APMU_SDH1, 0x1b, &clk_lock); | |
274 | + clk_register_clkdev(clk, NULL, "sdhci-pxa.1"); | |
275 | + | |
276 | + clk = mmp_clk_register_apmu("usb", "usb_pll", | |
277 | + apmu_base + APMU_USB, 0x9, &clk_lock); | |
278 | + clk_register_clkdev(clk, "usb_clk", NULL); | |
279 | + | |
280 | + clk = mmp_clk_register_apmu("sph", "usb_pll", | |
281 | + apmu_base + APMU_USB, 0x12, &clk_lock); | |
282 | + clk_register_clkdev(clk, "sph_clk", NULL); | |
283 | + | |
284 | + clk = clk_register_mux(NULL, "disp0_mux", disp_parent, | |
285 | + ARRAY_SIZE(disp_parent), CLK_SET_RATE_PARENT, | |
286 | + apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock); | |
287 | + clk_register_clkdev(clk, "disp_mux.0", NULL); | |
288 | + | |
289 | + clk = mmp_clk_register_apmu("disp0", "disp0_mux", | |
290 | + apmu_base + APMU_DISP0, 0x1b, &clk_lock); | |
291 | + clk_register_clkdev(clk, NULL, "mmp-disp.0"); | |
292 | + | |
293 | + clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent, | |
294 | + ARRAY_SIZE(ccic_parent), CLK_SET_RATE_PARENT, | |
295 | + apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock); | |
296 | + clk_register_clkdev(clk, "ccic_mux.0", NULL); | |
297 | + | |
298 | + clk = mmp_clk_register_apmu("ccic0", "ccic0_mux", | |
299 | + apmu_base + APMU_CCIC0, 0x1b, &clk_lock); | |
300 | + clk_register_clkdev(clk, "fnclk", "mmp-ccic.0"); | |
301 | + | |
302 | + clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent, | |
303 | + ARRAY_SIZE(ccic_phy_parent), | |
304 | + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, | |
305 | + 7, 1, 0, &clk_lock); | |
306 | + clk_register_clkdev(clk, "ccic_phy_mux.0", NULL); | |
307 | + | |
308 | + clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux", | |
309 | + apmu_base + APMU_CCIC0, 0x24, &clk_lock); | |
310 | + clk_register_clkdev(clk, "phyclk", "mmp-ccic.0"); | |
311 | + | |
312 | + clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux", | |
313 | + CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0, | |
314 | + 10, 5, 0, &clk_lock); | |
315 | + clk_register_clkdev(clk, "sphyclk_div", NULL); | |
316 | + | |
317 | + clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div", | |
318 | + apmu_base + APMU_CCIC0, 0x300, &clk_lock); | |
319 | + clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0"); | |
320 | +} |