1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
|
/*
* SPEAr6xx machines clock framework source file
*
* Copyright (C) 2012 ST Microelectronics
* Viresh Kumar <viresh.kumar@st.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/io.h>
#include <linux/spinlock_types.h>
#include <mach/misc_regs.h>
#include "clk.h"
static DEFINE_SPINLOCK(_lock);
#define PLL1_CTR (MISC_BASE + 0x008)
#define PLL1_FRQ (MISC_BASE + 0x00C)
#define PLL2_CTR (MISC_BASE + 0x014)
#define PLL2_FRQ (MISC_BASE + 0x018)
#define PLL_CLK_CFG (MISC_BASE + 0x020)
/* PLL_CLK_CFG register masks */
#define MCTR_CLK_SHIFT 28
#define MCTR_CLK_MASK 3
#define CORE_CLK_CFG (MISC_BASE + 0x024)
/* CORE CLK CFG register masks */
#define HCLK_RATIO_SHIFT 10
#define HCLK_RATIO_MASK 2
#define PCLK_RATIO_SHIFT 8
#define PCLK_RATIO_MASK 2
#define PERIP_CLK_CFG (MISC_BASE + 0x028)
/* PERIP_CLK_CFG register masks */
#define CLCD_CLK_SHIFT 2
#define CLCD_CLK_MASK 2
#define UART_CLK_SHIFT 4
#define UART_CLK_MASK 1
#define FIRDA_CLK_SHIFT 5
#define FIRDA_CLK_MASK 2
#define GPT0_CLK_SHIFT 8
#define GPT1_CLK_SHIFT 10
#define GPT2_CLK_SHIFT 11
#define GPT3_CLK_SHIFT 12
#define GPT_CLK_MASK 1
#define PERIP1_CLK_ENB (MISC_BASE + 0x02C)
/* PERIP1_CLK_ENB register masks */
#define UART0_CLK_ENB 3
#define UART1_CLK_ENB 4
#define SSP0_CLK_ENB 5
#define SSP1_CLK_ENB 6
#define I2C_CLK_ENB 7
#define JPEG_CLK_ENB 8
#define FSMC_CLK_ENB 9
#define FIRDA_CLK_ENB 10
#define GPT2_CLK_ENB 11
#define GPT3_CLK_ENB 12
#define GPIO2_CLK_ENB 13
#define SSP2_CLK_ENB 14
#define ADC_CLK_ENB 15
#define GPT1_CLK_ENB 11
#define RTC_CLK_ENB 17
#define GPIO1_CLK_ENB 18
#define DMA_CLK_ENB 19
#define SMI_CLK_ENB 21
#define CLCD_CLK_ENB 22
#define GMAC_CLK_ENB 23
#define USBD_CLK_ENB 24
#define USBH0_CLK_ENB 25
#define USBH1_CLK_ENB 26
#define PRSC0_CLK_CFG (MISC_BASE + 0x044)
#define PRSC1_CLK_CFG (MISC_BASE + 0x048)
#define PRSC2_CLK_CFG (MISC_BASE + 0x04C)
#define CLCD_CLK_SYNT (MISC_BASE + 0x05C)
#define FIRDA_CLK_SYNT (MISC_BASE + 0x060)
#define UART_CLK_SYNT (MISC_BASE + 0x064)
/* vco rate configuration table, in ascending order of rates */
static struct pll_rate_tbl pll_rtbl[] = {
{.mode = 0, .m = 0x53, .n = 0x0F, .p = 0x1}, /* vco 332 & pll 166 MHz */
{.mode = 0, .m = 0x85, .n = 0x0F, .p = 0x1}, /* vco 532 & pll 266 MHz */
{.mode = 0, .m = 0xA6, .n = 0x0F, .p = 0x1}, /* vco 664 & pll 332 MHz */
};
/* aux rate configuration table, in ascending order of rates */
static struct aux_rate_tbl aux_rtbl[] = {
/* For PLL1 = 332 MHz */
{.xscale = 2, .yscale = 8, .eq = 0}, /* 41.5 MHz */
{.xscale = 2, .yscale = 4, .eq = 0}, /* 83 MHz */
{.xscale = 1, .yscale = 2, .eq = 1}, /* 166 MHz */
};
static const char *clcd_parents[] = { "pll3_48m_clk", "clcd_synth_gate_clk", };
static const char *firda_parents[] = { "pll3_48m_clk", "firda_synth_gate_clk",
};
static const char *uart_parents[] = { "pll3_48m_clk", "uart_synth_gate_clk", };
static const char *gpt0_1_parents[] = { "pll3_48m_clk", "gpt0_1_synth_clk", };
static const char *gpt2_parents[] = { "pll3_48m_clk", "gpt2_synth_clk", };
static const char *gpt3_parents[] = { "pll3_48m_clk", "gpt3_synth_clk", };
static const char *ddr_parents[] = { "ahb_clk", "ahbmult2_clk", "none",
"pll2_clk", };
/* gpt rate configuration table, in ascending order of rates */
static struct gpt_rate_tbl gpt_rtbl[] = {
/* For pll1 = 332 MHz */
{.mscale = 4, .nscale = 0}, /* 41.5 MHz */
{.mscale = 2, .nscale = 0}, /* 55.3 MHz */
{.mscale = 1, .nscale = 0}, /* 83 MHz */
};
void __init spear6xx_clk_init(void)
{
struct clk *clk, *clk1;
clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, 0);
clk_register_clkdev(clk, "apb_pclk", NULL);
clk = clk_register_fixed_rate(NULL, "osc_32k_clk", NULL, CLK_IS_ROOT,
32000);
clk_register_clkdev(clk, "osc_32k_clk", NULL);
clk = clk_register_fixed_rate(NULL, "osc_30m_clk", NULL, CLK_IS_ROOT,
30000000);
clk_register_clkdev(clk, "osc_30m_clk", NULL);
/* clock derived from 32 KHz osc clk */
clk = clk_register_gate(NULL, "rtc_spear", "osc_32k_clk", 0,
PERIP1_CLK_ENB, RTC_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "rtc-spear");
/* clock derived from 30 MHz osc clk */
clk = clk_register_fixed_rate(NULL, "pll3_48m_clk", "osc_24m_clk", 0,
48000000);
clk_register_clkdev(clk, "pll3_48m_clk", NULL);
clk = clk_register_vco_pll("vco1_clk", "pll1_clk", NULL, "osc_30m_clk",
0, PLL1_CTR, PLL1_FRQ, pll_rtbl, ARRAY_SIZE(pll_rtbl),
&_lock, &clk1, NULL);
clk_register_clkdev(clk, "vco1_clk", NULL);
clk_register_clkdev(clk1, "pll1_clk", NULL);
clk = clk_register_vco_pll("vco2_clk", "pll2_clk", NULL,
"osc_30m_clk", 0, PLL2_CTR, PLL2_FRQ, pll_rtbl,
ARRAY_SIZE(pll_rtbl), &_lock, &clk1, NULL);
clk_register_clkdev(clk, "vco2_clk", NULL);
clk_register_clkdev(clk1, "pll2_clk", NULL);
clk = clk_register_fixed_factor(NULL, "wdt_clk", "osc_30m_clk", 0, 1,
1);
clk_register_clkdev(clk, NULL, "wdt");
/* clock derived from pll1 clk */
clk = clk_register_fixed_factor(NULL, "cpu_clk", "pll1_clk", 0, 1, 1);
clk_register_clkdev(clk, "cpu_clk", NULL);
clk = clk_register_divider(NULL, "ahb_clk", "pll1_clk",
CLK_SET_RATE_PARENT, CORE_CLK_CFG, HCLK_RATIO_SHIFT,
HCLK_RATIO_MASK, 0, &_lock);
clk_register_clkdev(clk, "ahb_clk", NULL);
clk = clk_register_aux("uart_synth_clk", "uart_synth_gate_clk",
"pll1_clk", 0, UART_CLK_SYNT, NULL, aux_rtbl,
ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
clk_register_clkdev(clk, "uart_synth_clk", NULL);
clk_register_clkdev(clk1, "uart_synth_gate_clk", NULL);
clk = clk_register_mux(NULL, "uart_mux_clk", uart_parents,
ARRAY_SIZE(uart_parents), 0, PERIP_CLK_CFG,
UART_CLK_SHIFT, UART_CLK_MASK, 0, &_lock);
clk_register_clkdev(clk, "uart_mux_clk", NULL);
clk = clk_register_gate(NULL, "uart0", "uart_mux_clk", 0,
PERIP1_CLK_ENB, UART0_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "d0000000.serial");
clk = clk_register_gate(NULL, "uart1", "uart_mux_clk", 0,
PERIP1_CLK_ENB, UART1_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "d0080000.serial");
clk = clk_register_aux("firda_synth_clk", "firda_synth_gate_clk",
"pll1_clk", 0, FIRDA_CLK_SYNT, NULL, aux_rtbl,
ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
clk_register_clkdev(clk, "firda_synth_clk", NULL);
clk_register_clkdev(clk1, "firda_synth_gate_clk", NULL);
clk = clk_register_mux(NULL, "firda_mux_clk", firda_parents,
ARRAY_SIZE(firda_parents), 0, PERIP_CLK_CFG,
FIRDA_CLK_SHIFT, FIRDA_CLK_MASK, 0, &_lock);
clk_register_clkdev(clk, "firda_mux_clk", NULL);
clk = clk_register_gate(NULL, "firda_clk", "firda_mux_clk", 0,
PERIP1_CLK_ENB, FIRDA_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "firda");
clk = clk_register_aux("clcd_synth_clk", "clcd_synth_gate_clk",
"pll1_clk", 0, CLCD_CLK_SYNT, NULL, aux_rtbl,
ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
clk_register_clkdev(clk, "clcd_synth_clk", NULL);
clk_register_clkdev(clk1, "clcd_synth_gate_clk", NULL);
clk = clk_register_mux(NULL, "clcd_mux_clk", clcd_parents,
ARRAY_SIZE(clcd_parents), 0, PERIP_CLK_CFG,
CLCD_CLK_SHIFT, CLCD_CLK_MASK, 0, &_lock);
clk_register_clkdev(clk, "clcd_mux_clk", NULL);
clk = clk_register_gate(NULL, "clcd_clk", "clcd_mux_clk", 0,
PERIP1_CLK_ENB, CLCD_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "clcd");
/* gpt clocks */
clk = clk_register_gpt("gpt0_1_synth_clk", "pll1_clk", 0, PRSC0_CLK_CFG,
gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
clk_register_clkdev(clk, "gpt0_1_synth_clk", NULL);
clk = clk_register_mux(NULL, "gpt0_mux_clk", gpt0_1_parents,
ARRAY_SIZE(gpt0_1_parents), 0, PERIP_CLK_CFG,
GPT0_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
clk_register_clkdev(clk, NULL, "gpt0");
clk = clk_register_mux(NULL, "gpt1_mux_clk", gpt0_1_parents,
ARRAY_SIZE(gpt0_1_parents), 0, PERIP_CLK_CFG,
GPT1_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
clk_register_clkdev(clk, "gpt1_mux_clk", NULL);
clk = clk_register_gate(NULL, "gpt1_clk", "gpt1_mux_clk", 0,
PERIP1_CLK_ENB, GPT1_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "gpt1");
clk = clk_register_gpt("gpt2_synth_clk", "pll1_clk", 0, PRSC1_CLK_CFG,
gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
clk_register_clkdev(clk, "gpt2_synth_clk", NULL);
clk = clk_register_mux(NULL, "gpt2_mux_clk", gpt2_parents,
ARRAY_SIZE(gpt2_parents), 0, PERIP_CLK_CFG,
GPT2_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
clk_register_clkdev(clk, "gpt2_mux_clk", NULL);
clk = clk_register_gate(NULL, "gpt2_clk", "gpt2_mux_clk", 0,
PERIP1_CLK_ENB, GPT2_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "gpt2");
clk = clk_register_gpt("gpt3_synth_clk", "pll1_clk", 0, PRSC2_CLK_CFG,
gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
clk_register_clkdev(clk, "gpt3_synth_clk", NULL);
clk = clk_register_mux(NULL, "gpt3_mux_clk", gpt3_parents,
ARRAY_SIZE(gpt3_parents), 0, PERIP_CLK_CFG,
GPT3_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
clk_register_clkdev(clk, "gpt3_mux_clk", NULL);
clk = clk_register_gate(NULL, "gpt3_clk", "gpt3_mux_clk", 0,
PERIP1_CLK_ENB, GPT3_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "gpt3");
/* clock derived from pll3 clk */
clk = clk_register_gate(NULL, "usbh0_clk", "pll3_48m_clk", 0,
PERIP1_CLK_ENB, USBH0_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "usbh.0_clk");
clk = clk_register_gate(NULL, "usbh1_clk", "pll3_48m_clk", 0,
PERIP1_CLK_ENB, USBH1_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "usbh.1_clk");
clk = clk_register_gate(NULL, "usbd_clk", "pll3_48m_clk", 0,
PERIP1_CLK_ENB, USBD_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "designware_udc");
/* clock derived from ahb clk */
clk = clk_register_fixed_factor(NULL, "ahbmult2_clk", "ahb_clk", 0, 2,
1);
clk_register_clkdev(clk, "ahbmult2_clk", NULL);
clk = clk_register_mux(NULL, "ddr_clk", ddr_parents,
ARRAY_SIZE(ddr_parents),
0, PLL_CLK_CFG, MCTR_CLK_SHIFT, MCTR_CLK_MASK, 0,
&_lock);
clk_register_clkdev(clk, "ddr_clk", NULL);
clk = clk_register_divider(NULL, "apb_clk", "ahb_clk",
CLK_SET_RATE_PARENT, CORE_CLK_CFG, PCLK_RATIO_SHIFT,
PCLK_RATIO_MASK, 0, &_lock);
clk_register_clkdev(clk, "apb_clk", NULL);
clk = clk_register_gate(NULL, "dma_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
DMA_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "fc400000.dma");
clk = clk_register_gate(NULL, "fsmc_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
FSMC_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "d1800000.flash");
clk = clk_register_gate(NULL, "gmac_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
GMAC_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "gmac");
clk = clk_register_gate(NULL, "i2c_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
I2C_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "d0200000.i2c");
clk = clk_register_gate(NULL, "jpeg_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
JPEG_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "jpeg");
clk = clk_register_gate(NULL, "smi_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
SMI_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "fc000000.flash");
/* clock derived from apb clk */
clk = clk_register_gate(NULL, "adc_clk", "apb_clk", 0, PERIP1_CLK_ENB,
ADC_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "adc");
clk = clk_register_fixed_factor(NULL, "gpio0_clk", "apb_clk", 0, 1, 1);
clk_register_clkdev(clk, NULL, "f0100000.gpio");
clk = clk_register_gate(NULL, "gpio1_clk", "apb_clk", 0, PERIP1_CLK_ENB,
GPIO1_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "fc980000.gpio");
clk = clk_register_gate(NULL, "gpio2_clk", "apb_clk", 0, PERIP1_CLK_ENB,
GPIO2_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "d8100000.gpio");
clk = clk_register_gate(NULL, "ssp0_clk", "apb_clk", 0, PERIP1_CLK_ENB,
SSP0_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "ssp-pl022.0");
clk = clk_register_gate(NULL, "ssp1_clk", "apb_clk", 0, PERIP1_CLK_ENB,
SSP1_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "ssp-pl022.1");
clk = clk_register_gate(NULL, "ssp2_clk", "apb_clk", 0, PERIP1_CLK_ENB,
SSP2_CLK_ENB, 0, &_lock);
clk_register_clkdev(clk, NULL, "ssp-pl022.2");
}
|
