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,
73 * clock ratio of these clock will be updated
74 * on r8a7778_clock_init()
76 SH_FIXED_RATIO_CLK_SET(plla_clk, extal_clk, 1, 1);
77 SH_FIXED_RATIO_CLK_SET(pllb_clk, extal_clk, 1, 1);
78 SH_FIXED_RATIO_CLK_SET(i_clk, plla_clk, 1, 1);
79 SH_FIXED_RATIO_CLK_SET(s_clk, plla_clk, 1, 1);
80 SH_FIXED_RATIO_CLK_SET(s1_clk, plla_clk, 1, 1);
81 SH_FIXED_RATIO_CLK_SET(s3_clk, plla_clk, 1, 1);
82 SH_FIXED_RATIO_CLK_SET(s4_clk, plla_clk, 1, 1);
83 SH_FIXED_RATIO_CLK_SET(b_clk, plla_clk, 1, 1);
84 SH_FIXED_RATIO_CLK_SET(out_clk, plla_clk, 1, 1);
85 SH_FIXED_RATIO_CLK_SET(p_clk, plla_clk, 1, 1);
86 SH_FIXED_RATIO_CLK_SET(g_clk, plla_clk, 1, 1);
87 SH_FIXED_RATIO_CLK_SET(z_clk, pllb_clk, 1, 1);
89 static struct clk *main_clks[] = {
107 MSTP323, MSTP322, MSTP321,
112 MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021,
117 static struct clk mstp_clks[MSTP_NR] = {
118 [MSTP331] = SH_CLK_MSTP32(&s4_clk, MSTPCR3, 31, 0), /* MMC */
119 [MSTP323] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 23, 0), /* SDHI0 */
120 [MSTP322] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 22, 0), /* SDHI1 */
121 [MSTP321] = SH_CLK_MSTP32(&p_clk, MSTPCR3, 21, 0), /* SDHI2 */
122 [MSTP114] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 14, 0), /* Ether */
123 [MSTP110] = SH_CLK_MSTP32(&s_clk, MSTPCR1, 10, 0), /* VIN0 */
124 [MSTP109] = SH_CLK_MSTP32(&s_clk, MSTPCR1, 9, 0), /* VIN1 */
125 [MSTP100] = SH_CLK_MSTP32(&p_clk, MSTPCR1, 0, 0), /* USB0/1 */
126 [MSTP030] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 30, 0), /* I2C0 */
127 [MSTP029] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 29, 0), /* I2C1 */
128 [MSTP028] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 28, 0), /* I2C2 */
129 [MSTP027] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 27, 0), /* I2C3 */
130 [MSTP026] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 26, 0), /* SCIF0 */
131 [MSTP025] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 25, 0), /* SCIF1 */
132 [MSTP024] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 24, 0), /* SCIF2 */
133 [MSTP023] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 23, 0), /* SCIF3 */
134 [MSTP022] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 22, 0), /* SCIF4 */
135 [MSTP021] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 21, 0), /* SCIF5 */
136 [MSTP016] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 16, 0), /* TMU0 */
137 [MSTP015] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 15, 0), /* TMU1 */
138 [MSTP007] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 7, 0), /* HSPI */
141 static struct clk_lookup lookups[] = {
143 CLKDEV_CON_ID("shyway_clk", &s_clk),
144 CLKDEV_CON_ID("peripheral_clk", &p_clk),
147 CLKDEV_DEV_ID("sh_mmcif", &mstp_clks[MSTP331]), /* MMC */
148 CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP323]), /* SDHI0 */
149 CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP322]), /* SDHI1 */
150 CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP321]), /* SDHI2 */
151 CLKDEV_DEV_ID("r8a777x-ether", &mstp_clks[MSTP114]), /* Ether */
152 CLKDEV_DEV_ID("r8a7778-vin.0", &mstp_clks[MSTP110]), /* VIN0 */
153 CLKDEV_DEV_ID("r8a7778-vin.1", &mstp_clks[MSTP109]), /* VIN1 */
154 CLKDEV_DEV_ID("ehci-platform", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */
155 CLKDEV_DEV_ID("ohci-platform", &mstp_clks[MSTP100]), /* USB OHCI port0/1 */
156 CLKDEV_DEV_ID("i2c-rcar.0", &mstp_clks[MSTP030]), /* I2C0 */
157 CLKDEV_DEV_ID("i2c-rcar.1", &mstp_clks[MSTP029]), /* I2C1 */
158 CLKDEV_DEV_ID("i2c-rcar.2", &mstp_clks[MSTP028]), /* I2C2 */
159 CLKDEV_DEV_ID("i2c-rcar.3", &mstp_clks[MSTP027]), /* I2C3 */
160 CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP026]), /* SCIF0 */
161 CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP025]), /* SCIF1 */
162 CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP024]), /* SCIF2 */
163 CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP023]), /* SCIF3 */
164 CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP022]), /* SCIF4 */
165 CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP021]), /* SCIF6 */
166 CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */
167 CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP015]), /* TMU01 */
168 CLKDEV_DEV_ID("sh-hspi.0", &mstp_clks[MSTP007]), /* HSPI0 */
169 CLKDEV_DEV_ID("sh-hspi.1", &mstp_clks[MSTP007]), /* HSPI1 */
170 CLKDEV_DEV_ID("sh-hspi.2", &mstp_clks[MSTP007]), /* HSPI2 */
173 void __init r8a7778_clock_init(void)
175 void __iomem *modemr = ioremap_nocache(MODEMR, PAGE_SIZE);
180 mode = ioread32(modemr);
183 switch (mode & (MD(19) | MD(18) | MD(12) | MD(11))) {
185 extal_clk.rate = 38000000;
186 SH_CLK_SET_RATIO(&plla_clk_ratio, 21, 1);
187 SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
189 case MD(19) | MD(11):
190 extal_clk.rate = 33333333;
191 SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1);
192 SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1);
194 case MD(19) | MD(12):
195 extal_clk.rate = 28500000;
196 SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1);
197 SH_CLK_SET_RATIO(&pllb_clk_ratio, 28, 1);
199 case MD(19) | MD(12) | MD(11):
200 extal_clk.rate = 25000000;
201 SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1);
202 SH_CLK_SET_RATIO(&pllb_clk_ratio, 32, 1);
204 case MD(19) | MD(18) | MD(11):
205 extal_clk.rate = 33333333;
206 SH_CLK_SET_RATIO(&plla_clk_ratio, 24, 1);
207 SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
209 case MD(19) | MD(18) | MD(12):
210 extal_clk.rate = 28500000;
211 SH_CLK_SET_RATIO(&plla_clk_ratio, 28, 1);
212 SH_CLK_SET_RATIO(&pllb_clk_ratio, 21, 1);
214 case MD(19) | MD(18) | MD(12) | MD(11):
215 extal_clk.rate = 25000000;
216 SH_CLK_SET_RATIO(&plla_clk_ratio, 32, 1);
217 SH_CLK_SET_RATIO(&pllb_clk_ratio, 24, 1);
224 SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1);
225 SH_CLK_SET_RATIO(&s_clk_ratio, 1, 3);
226 SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 6);
227 SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4);
228 SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8);
229 SH_CLK_SET_RATIO(&p_clk_ratio, 1, 12);
230 SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12);
232 SH_CLK_SET_RATIO(&b_clk_ratio, 1, 18);
233 SH_CLK_SET_RATIO(&out_clk_ratio, 1, 18);
235 SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12);
236 SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12);
239 SH_CLK_SET_RATIO(&i_clk_ratio, 1, 1);
240 SH_CLK_SET_RATIO(&s_clk_ratio, 1, 4);
241 SH_CLK_SET_RATIO(&s1_clk_ratio, 1, 8);
242 SH_CLK_SET_RATIO(&s3_clk_ratio, 1, 4);
243 SH_CLK_SET_RATIO(&s4_clk_ratio, 1, 8);
244 SH_CLK_SET_RATIO(&p_clk_ratio, 1, 16);
245 SH_CLK_SET_RATIO(&g_clk_ratio, 1, 12);
247 SH_CLK_SET_RATIO(&b_clk_ratio, 1, 16);
248 SH_CLK_SET_RATIO(&out_clk_ratio, 1, 16);
250 SH_CLK_SET_RATIO(&b_clk_ratio, 1, 12);
251 SH_CLK_SET_RATIO(&out_clk_ratio, 1, 12);
255 for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
256 ret = clk_register(main_clks[k]);
259 ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
261 clkdev_add_table(lookups, ARRAY_SIZE(lookups));
266 panic("failed to setup r8a7778 clocks\n");