2 * r8a7778 clock framework support
4 * Copyright (C) 2013 Renesas Solutions Corp.
5 * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
9 * Copyright (C) 2011 Renesas Solutions Corp.
10 * Copyright (C) 2011 Magnus Damm
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 * MD MD MD MD PLLA PLLB EXTAL clki clkz
28 * 19 18 12 11 (HMz) (MHz) (MHz)
29 *----------------------------------------------------------------------------
30 * 1 0 0 0 x21 x21 38.00 800 800
31 * 1 0 0 1 x24 x24 33.33 800 800
32 * 1 0 1 0 x28 x28 28.50 800 800
33 * 1 0 1 1 x32 x32 25.00 800 800
34 * 1 1 0 1 x24 x21 33.33 800 700
35 * 1 1 1 0 x28 x21 28.50 800 600
36 * 1 1 1 1 x32 x24 25.00 800 600
40 #include <linux/sh_clk.h>
41 #include <linux/clkdev.h>
42 #include <mach/clock.h>
43 #include <mach/common.h>
45 #define MSTPCR0 IOMEM(0xffc80030)
46 #define MSTPCR1 IOMEM(0xffc80034)
47 #define MSTPCR3 IOMEM(0xffc8003c)
48 #define MSTPSR1 IOMEM(0xffc80044)
49 #define MSTPSR4 IOMEM(0xffc80048)
50 #define MSTPSR6 IOMEM(0xffc8004c)
51 #define MSTPCR4 IOMEM(0xffc80050)
52 #define MSTPCR5 IOMEM(0xffc80054)
53 #define MSTPCR6 IOMEM(0xffc80058)
54 #define MODEMR 0xFFCC0020
56 #define MD(nr) BIT(nr)
58 /* ioremap() through clock mapping mandatory to avoid
59 * collision with ARM coherent DMA virtual memory range.
62 static struct clk_mapping cpg_mapping = {
67 static struct clk extal_clk = {
68 /* .rate will be updated on r8a7778_clock_init() */
69 .mapping = &cpg_mapping,
72 static struct clk audio_clk_a = {
75 static struct clk audio_clk_b = {
78 static struct clk audio_clk_c = {
82 * clock ratio of these clock will be updated
83 * on r8a7778_clock_init()
85 SH_FIXED_RATIO_CLK_SET(plla_clk, extal_clk, 1, 1);
86 SH_FIXED_RATIO_CLK_SET(pllb_clk, extal_clk, 1, 1);
87 SH_FIXED_RATIO_CLK_SET(i_clk, plla_clk, 1, 1);
88 SH_FIXED_RATIO_CLK_SET(s_clk, plla_clk, 1, 1);
89 SH_FIXED_RATIO_CLK_SET(s1_clk, plla_clk, 1, 1);
90 SH_FIXED_RATIO_CLK_SET(s3_clk, plla_clk, 1, 1);
91 SH_FIXED_RATIO_CLK_SET(s4_clk, plla_clk, 1, 1);
92 SH_FIXED_RATIO_CLK_SET(b_clk, plla_clk, 1, 1);
93 SH_FIXED_RATIO_CLK_SET(out_clk, plla_clk, 1, 1);
94 SH_FIXED_RATIO_CLK_SET(p_clk, plla_clk, 1, 1);
95 SH_FIXED_RATIO_CLK_SET(g_clk, plla_clk, 1, 1);
96 SH_FIXED_RATIO_CLK_SET(z_clk, pllb_clk, 1, 1);
98 static struct clk *main_clks[] = {
119 MSTP323, MSTP322, MSTP321,
121 MSTP309, MSTP308, MSTP307,
126 MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021,
127 MSTP016, MSTP015, MSTP012, MSTP011, MSTP010,
128 MSTP009, MSTP008, MSTP007,
131 static struct clk mstp_clks[MSTP_NR] = {
132 [MSTP331] = SH_CLK_MSTP32(&s4_clk, MSTPCR3, 31, 0), /* MMC */
133 [MSTP323] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 23, 0), /* SDHI0 */
134 [MSTP322] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 22, 0), /* SDHI1 */
135 [MSTP321] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 21, 0), /* SDHI2 */
136 [MSTP311] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 11, 0), /* SSI4 */
137 [MSTP310] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 10, 0), /* SSI5 */
138 [MSTP309] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 9, 0), /* SSI6 */
139 [MSTP308] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 8, 0), /* SSI7 */
140 [MSTP307] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 7, 0), /* SSI8 */
141 [MSTP114] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 14, 0), /* Ether */
142 [MSTP110] = SH_CLK_MSTP32(&s_clk, MSTPCR1, 10, 0), /* VIN0 */
143 [MSTP109] = SH_CLK_MSTP32(&s_clk, MSTPCR1, 9, 0), /* VIN1 */
144 [MSTP100] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 0, 0), /* USB0/1 */
145 [MSTP030] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 30, 0), /* I2C0 */
146 [MSTP029] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 29, 0), /* I2C1 */
147 [MSTP028] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 28, 0), /* I2C2 */
148 [MSTP027] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 27, 0), /* I2C3 */
149 [MSTP026] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 26, 0), /* SCIF0 */
150 [MSTP025] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 25, 0), /* SCIF1 */
151 [MSTP024] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 24, 0), /* SCIF2 */
152 [MSTP023] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 23, 0), /* SCIF3 */
153 [MSTP022] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 22, 0), /* SCIF4 */
154 [MSTP021] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 21, 0), /* SCIF5 */
155 [MSTP016] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 16, 0), /* TMU0 */
156 [MSTP015] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 15, 0), /* TMU1 */
157 [MSTP012] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 12, 0), /* SSI0 */
158 [MSTP011] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 11, 0), /* SSI1 */
159 [MSTP010] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 10, 0), /* SSI2 */
160 [MSTP009] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 9, 0), /* SSI3 */
161 [MSTP008] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 8, 0), /* SRU */
162 [MSTP007] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 7, 0), /* HSPI */
165 static struct clk_lookup lookups[] = {
167 CLKDEV_CON_ID("audio_clk_a", &audio_clk_a),
168 CLKDEV_CON_ID("audio_clk_b", &audio_clk_b),
169 CLKDEV_CON_ID("audio_clk_c", &audio_clk_c),
170 CLKDEV_CON_ID("audio_clk_internal", &s1_clk),
171 CLKDEV_CON_ID("shyway_clk", &s_clk),
172 CLKDEV_CON_ID("peripheral_clk", &p_clk),
175 CLKDEV_DEV_ID("sh_mmcif", &mstp_clks[MSTP331]), /* MMC */
176 CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP323]), /* SDHI0 */
177 CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP322]), /* SDHI1 */
178 CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP321]), /* SDHI2 */
179 CLKDEV_DEV_ID("r8a777x-ether", &mstp_clks[MSTP114]), /* Ether */
180 CLKDEV_DEV_ID("r8a7778-vin.0", &mstp_clks[MSTP110]), /* VIN0 */
181 CLKDEV_DEV_ID("r8a7778-vin.1", &mstp_clks[MSTP109]), /* VIN1 */
182 CLKDEV_DEV_ID("ehci-platform", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */
183 CLKDEV_DEV_ID("ohci-platform", &mstp_clks[MSTP100]), /* USB OHCI port0/1 */
184 CLKDEV_DEV_ID("renesas_usbhs", &mstp_clks[MSTP100]), /* USB FUNC */
185 CLKDEV_DEV_ID("i2c-rcar.0", &mstp_clks[MSTP030]), /* I2C0 */
186 CLKDEV_DEV_ID("i2c-rcar.1", &mstp_clks[MSTP029]), /* I2C1 */
187 CLKDEV_DEV_ID("i2c-rcar.2", &mstp_clks[MSTP028]), /* I2C2 */
188 CLKDEV_DEV_ID("i2c-rcar.3", &mstp_clks[MSTP027]), /* I2C3 */
189 CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP026]), /* SCIF0 */
190 CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP025]), /* SCIF1 */
191 CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP024]), /* SCIF2 */
192 CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP023]), /* SCIF3 */
193 CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP022]), /* SCIF4 */
194 CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP021]), /* SCIF6 */
195 CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */
196 CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP015]), /* TMU01 */
197 CLKDEV_DEV_ID("sh-hspi.0", &mstp_clks[MSTP007]), /* HSPI0 */
198 CLKDEV_DEV_ID("sh-hspi.1", &mstp_clks[MSTP007]), /* HSPI1 */
199 CLKDEV_DEV_ID("sh-hspi.2", &mstp_clks[MSTP007]), /* HSPI2 */
200 CLKDEV_DEV_ID("rcar_sound", &mstp_clks[MSTP008]), /* SRU */
202 CLKDEV_ICK_ID("ssi.0", "rcar_sound", &mstp_clks[MSTP012]),
203 CLKDEV_ICK_ID("ssi.1", "rcar_sound", &mstp_clks[MSTP011]),
204 CLKDEV_ICK_ID("ssi.2", "rcar_sound", &mstp_clks[MSTP010]),
205 CLKDEV_ICK_ID("ssi.3", "rcar_sound", &mstp_clks[MSTP009]),
206 CLKDEV_ICK_ID("ssi.4", "rcar_sound", &mstp_clks[MSTP311]),
207 CLKDEV_ICK_ID("ssi.5", "rcar_sound", &mstp_clks[MSTP310]),
208 CLKDEV_ICK_ID("ssi.6", "rcar_sound", &mstp_clks[MSTP309]),
209 CLKDEV_ICK_ID("ssi.7", "rcar_sound", &mstp_clks[MSTP308]),
210 CLKDEV_ICK_ID("ssi.8", "rcar_sound", &mstp_clks[MSTP307]),
213 void __init r8a7778_clock_init(void)
215 void __iomem *modemr = ioremap_nocache(MODEMR, PAGE_SIZE);
220 mode = ioread32(modemr);
223 switch (mode & (MD(19) | MD(18) | MD(12) | MD(11))) {
225 extal_clk.rate = 38000000;
226 SH_CLK_SET_RATIO(&plla_clk_ratio, 21, 1);
227 SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
229 case MD(19) | MD(11):
230 extal_clk.rate = 33333333;
231 SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1);
232 SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1);
234 case MD(19) | MD(12):
235 extal_clk.rate = 28500000;
236 SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1);
237 SH_CLK_SET_RATIO(&pllb_clk_ratio, 28, 1);
239 case MD(19) | MD(12) | MD(11):
240 extal_clk.rate = 25000000;
241 SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1);
242 SH_CLK_SET_RATIO(&pllb_clk_ratio, 32, 1);
244 case MD(19) | MD(18) | MD(11):
245 extal_clk.rate = 33333333;
246 SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1);
247 SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
249 case MD(19) | MD(18) | MD(12):
250 extal_clk.rate = 28500000;
251 SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1);
252 SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
254 case MD(19) | MD(18) | MD(12) | MD(11):
255 extal_clk.rate = 25000000;
256 SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1);
257 SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1);
264 SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1);
265 SH_CLK_SET_RATIO(&s_clk_ratio, 1, 3);
266 SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 6);
267 SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4);
268 SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8);
269 SH_CLK_SET_RATIO(&p_clk_ratio, 1, 12);
270 SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12);
272 SH_CLK_SET_RATIO(&b_clk_ratio, 1, 18);
273 SH_CLK_SET_RATIO(&out_clk_ratio, 1, 18);
275 SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12);
276 SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12);
279 SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1);
280 SH_CLK_SET_RATIO(&s_clk_ratio, 1, 4);
281 SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 8);
282 SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4);
283 SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8);
284 SH_CLK_SET_RATIO(&p_clk_ratio, 1, 16);
285 SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12);
287 SH_CLK_SET_RATIO(&b_clk_ratio, 1, 16);
288 SH_CLK_SET_RATIO(&out_clk_ratio, 1, 16);
290 SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12);
291 SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12);
295 for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
296 ret = clk_register(main_clks[k]);
299 ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
301 clkdev_add_table(lookups, ARRAY_SIZE(lookups));
306 panic("failed to setup r8a7778 clocks\n");