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f411fade MD |
1 | /* |
2 | * r8a7779 clock framework support | |
3 | * | |
4 | * Copyright (C) 2011 Renesas Solutions Corp. | |
5 | * Copyright (C) 2011 Magnus Damm | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
ec0728d6 | 20 | #include <linux/bitops.h> |
f411fade MD |
21 | #include <linux/init.h> |
22 | #include <linux/kernel.h> | |
23 | #include <linux/io.h> | |
24 | #include <linux/sh_clk.h> | |
25 | #include <linux/clkdev.h> | |
ec0728d6 | 26 | #include <mach/clock.h> |
f411fade MD |
27 | #include <mach/common.h> |
28 | ||
f0ff5a0a KM |
29 | /* |
30 | * MD1 = 1 MD1 = 0 | |
31 | * (PLLA = 1500) (PLLA = 1600) | |
32 | * (MHz) (MHz) | |
33 | *------------------------------------------------+-------------------- | |
34 | * clkz 1000 (2/3) 800 (1/2) | |
35 | * clkzs 250 (1/6) 200 (1/8) | |
36 | * clki 750 (1/2) 800 (1/2) | |
37 | * clks 250 (1/6) 200 (1/8) | |
38 | * clks1 125 (1/12) 100 (1/16) | |
39 | * clks3 187.5 (1/8) 200 (1/8) | |
40 | * clks4 93.7 (1/16) 100 (1/16) | |
41 | * clkp 62.5 (1/24) 50 (1/32) | |
42 | * clkg 62.5 (1/24) 66.6 (1/24) | |
43 | * clkb, CLKOUT | |
44 | * (MD2 = 0) 62.5 (1/24) 66.6 (1/24) | |
45 | * (MD2 = 1) 41.6 (1/36) 50 (1/32) | |
46 | */ | |
47 | ||
ec0728d6 KM |
48 | #define MD(nr) BIT(nr) |
49 | ||
11f93576 KM |
50 | #define FRQMR IOMEM(0xffc80014) |
51 | #define MSTPCR0 IOMEM(0xffc80030) | |
52 | #define MSTPCR1 IOMEM(0xffc80034) | |
53 | #define MSTPCR3 IOMEM(0xffc8003c) | |
54 | #define MSTPSR1 IOMEM(0xffc80044) | |
55 | #define MSTPSR4 IOMEM(0xffc80048) | |
56 | #define MSTPSR6 IOMEM(0xffc8004c) | |
57 | #define MSTPCR4 IOMEM(0xffc80050) | |
58 | #define MSTPCR5 IOMEM(0xffc80054) | |
59 | #define MSTPCR6 IOMEM(0xffc80058) | |
60 | #define MSTPCR7 IOMEM(0xffc80040) | |
f411fade | 61 | |
ec0728d6 KM |
62 | #define MODEMR 0xffcc0020 |
63 | ||
64 | ||
f411fade MD |
65 | /* ioremap() through clock mapping mandatory to avoid |
66 | * collision with ARM coherent DMA virtual memory range. | |
67 | */ | |
68 | ||
69 | static struct clk_mapping cpg_mapping = { | |
70 | .phys = 0xffc80000, | |
71 | .len = 0x80, | |
72 | }; | |
73 | ||
b5813c73 KM |
74 | /* |
75 | * Default rate for the root input clock, reset this with clk_set_rate() | |
76 | * from the platform code. | |
77 | */ | |
78 | static struct clk plla_clk = { | |
ec0728d6 | 79 | /* .rate will be updated on r8a7779_clock_init() */ |
b5813c73 | 80 | .mapping = &cpg_mapping, |
f411fade MD |
81 | }; |
82 | ||
ec0728d6 KM |
83 | /* |
84 | * clock ratio of these clock will be updated | |
85 | * on r8a7779_clock_init() | |
86 | */ | |
87 | SH_FIXED_RATIO_CLK_SET(clkz_clk, plla_clk, 1, 1); | |
88 | SH_FIXED_RATIO_CLK_SET(clkzs_clk, plla_clk, 1, 1); | |
89 | SH_FIXED_RATIO_CLK_SET(clki_clk, plla_clk, 1, 1); | |
90 | SH_FIXED_RATIO_CLK_SET(clks_clk, plla_clk, 1, 1); | |
91 | SH_FIXED_RATIO_CLK_SET(clks1_clk, plla_clk, 1, 1); | |
92 | SH_FIXED_RATIO_CLK_SET(clks3_clk, plla_clk, 1, 1); | |
93 | SH_FIXED_RATIO_CLK_SET(clks4_clk, plla_clk, 1, 1); | |
94 | SH_FIXED_RATIO_CLK_SET(clkb_clk, plla_clk, 1, 1); | |
95 | SH_FIXED_RATIO_CLK_SET(clkout_clk, plla_clk, 1, 1); | |
96 | SH_FIXED_RATIO_CLK_SET(clkp_clk, plla_clk, 1, 1); | |
97 | SH_FIXED_RATIO_CLK_SET(clkg_clk, plla_clk, 1, 1); | |
98 | ||
f411fade | 99 | static struct clk *main_clks[] = { |
b5813c73 | 100 | &plla_clk, |
ec0728d6 KM |
101 | &clkz_clk, |
102 | &clkzs_clk, | |
103 | &clki_clk, | |
104 | &clks_clk, | |
105 | &clks1_clk, | |
106 | &clks3_clk, | |
107 | &clks4_clk, | |
108 | &clkb_clk, | |
109 | &clkout_clk, | |
110 | &clkp_clk, | |
111 | &clkg_clk, | |
f411fade MD |
112 | }; |
113 | ||
263510ec | 114 | enum { MSTP323, MSTP322, MSTP321, MSTP320, |
dace48d0 | 115 | MSTP115, MSTP114, |
d75bc78b | 116 | MSTP103, MSTP101, MSTP100, |
16c40abc KM |
117 | MSTP030, |
118 | MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021, | |
f411fade | 119 | MSTP016, MSTP015, MSTP014, |
f92246e6 | 120 | MSTP007, |
f411fade MD |
121 | MSTP_NR }; |
122 | ||
f411fade | 123 | static struct clk mstp_clks[MSTP_NR] = { |
ec0728d6 KM |
124 | [MSTP323] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 23, 0), /* SDHI0 */ |
125 | [MSTP322] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 22, 0), /* SDHI1 */ | |
126 | [MSTP321] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 21, 0), /* SDHI2 */ | |
127 | [MSTP320] = SH_CLK_MSTP32(&clkp_clk, MSTPCR3, 20, 0), /* SDHI3 */ | |
128 | [MSTP115] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 15, 0), /* SATA */ | |
dace48d0 | 129 | [MSTP114] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 14, 0), /* Ether */ |
ec0728d6 KM |
130 | [MSTP103] = SH_CLK_MSTP32(&clks_clk, MSTPCR1, 3, 0), /* DU */ |
131 | [MSTP101] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 1, 0), /* USB2 */ | |
132 | [MSTP100] = SH_CLK_MSTP32(&clkp_clk, MSTPCR1, 0, 0), /* USB0/1 */ | |
133 | [MSTP030] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 30, 0), /* I2C0 */ | |
134 | [MSTP029] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 29, 0), /* I2C1 */ | |
135 | [MSTP028] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 28, 0), /* I2C2 */ | |
136 | [MSTP027] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 27, 0), /* I2C3 */ | |
137 | [MSTP026] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 26, 0), /* SCIF0 */ | |
138 | [MSTP025] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 25, 0), /* SCIF1 */ | |
139 | [MSTP024] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 24, 0), /* SCIF2 */ | |
140 | [MSTP023] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 23, 0), /* SCIF3 */ | |
141 | [MSTP022] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 22, 0), /* SCIF4 */ | |
142 | [MSTP021] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 21, 0), /* SCIF5 */ | |
143 | [MSTP016] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 16, 0), /* TMU0 */ | |
144 | [MSTP015] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 15, 0), /* TMU1 */ | |
145 | [MSTP014] = SH_CLK_MSTP32(&clkp_clk, MSTPCR0, 14, 0), /* TMU2 */ | |
146 | [MSTP007] = SH_CLK_MSTP32(&clks_clk, MSTPCR0, 7, 0), /* HSPI */ | |
916b1f8c KM |
147 | }; |
148 | ||
f411fade | 149 | static struct clk_lookup lookups[] = { |
b5813c73 KM |
150 | /* main clocks */ |
151 | CLKDEV_CON_ID("plla_clk", &plla_clk), | |
916b1f8c KM |
152 | CLKDEV_CON_ID("clkz_clk", &clkz_clk), |
153 | CLKDEV_CON_ID("clkzs_clk", &clkzs_clk), | |
b5813c73 KM |
154 | |
155 | /* DIV4 clocks */ | |
ec0728d6 KM |
156 | CLKDEV_CON_ID("shyway_clk", &clks_clk), |
157 | CLKDEV_CON_ID("bus_clk", &clkout_clk), | |
158 | CLKDEV_CON_ID("shyway4_clk", &clks4_clk), | |
159 | CLKDEV_CON_ID("shyway3_clk", &clks3_clk), | |
160 | CLKDEV_CON_ID("shyway1_clk", &clks1_clk), | |
161 | CLKDEV_CON_ID("peripheral_clk", &clkp_clk), | |
b5813c73 | 162 | |
f411fade | 163 | /* MSTP32 clocks */ |
a7b9837c VB |
164 | CLKDEV_DEV_ID("sata_rcar", &mstp_clks[MSTP115]), /* SATA */ |
165 | CLKDEV_DEV_ID("fc600000.sata", &mstp_clks[MSTP115]), /* SATA w/DT */ | |
dace48d0 | 166 | CLKDEV_DEV_ID("sh-eth", &mstp_clks[MSTP114]), /* Ether */ |
88419548 | 167 | CLKDEV_DEV_ID("ehci-platform.1", &mstp_clks[MSTP101]), /* USB EHCI port2 */ |
9d69f5b8 | 168 | CLKDEV_DEV_ID("ohci-platform.1", &mstp_clks[MSTP101]), /* USB OHCI port2 */ |
88419548 | 169 | CLKDEV_DEV_ID("ehci-platform.0", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */ |
9d69f5b8 | 170 | CLKDEV_DEV_ID("ohci-platform.0", &mstp_clks[MSTP100]), /* USB OHCI port0/1 */ |
f411fade | 171 | CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */ |
f9047306 SH |
172 | CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP016]), /* TMU01 */ |
173 | CLKDEV_DEV_ID("sh_tmu.2", &mstp_clks[MSTP016]), /* TMU02 */ | |
16c40abc KM |
174 | CLKDEV_DEV_ID("i2c-rcar.0", &mstp_clks[MSTP030]), /* I2C0 */ |
175 | CLKDEV_DEV_ID("i2c-rcar.1", &mstp_clks[MSTP029]), /* I2C1 */ | |
176 | CLKDEV_DEV_ID("i2c-rcar.2", &mstp_clks[MSTP028]), /* I2C2 */ | |
177 | CLKDEV_DEV_ID("i2c-rcar.3", &mstp_clks[MSTP027]), /* I2C3 */ | |
f411fade MD |
178 | CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP026]), /* SCIF0 */ |
179 | CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP025]), /* SCIF1 */ | |
180 | CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP024]), /* SCIF2 */ | |
181 | CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP023]), /* SCIF3 */ | |
182 | CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP022]), /* SCIF4 */ | |
183 | CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP021]), /* SCIF6 */ | |
f92246e6 KM |
184 | CLKDEV_DEV_ID("sh-hspi.0", &mstp_clks[MSTP007]), /* HSPI0 */ |
185 | CLKDEV_DEV_ID("sh-hspi.1", &mstp_clks[MSTP007]), /* HSPI1 */ | |
186 | CLKDEV_DEV_ID("sh-hspi.2", &mstp_clks[MSTP007]), /* HSPI2 */ | |
263510ec PE |
187 | CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP323]), /* SDHI0 */ |
188 | CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP322]), /* SDHI1 */ | |
189 | CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP321]), /* SDHI2 */ | |
190 | CLKDEV_DEV_ID("sh_mobile_sdhi.3", &mstp_clks[MSTP320]), /* SDHI3 */ | |
d75bc78b | 191 | CLKDEV_DEV_ID("rcar-du.0", &mstp_clks[MSTP103]), /* DU */ |
f411fade MD |
192 | }; |
193 | ||
194 | void __init r8a7779_clock_init(void) | |
195 | { | |
ec0728d6 KM |
196 | void __iomem *modemr = ioremap_nocache(MODEMR, PAGE_SIZE); |
197 | u32 mode; | |
f411fade MD |
198 | int k, ret = 0; |
199 | ||
ec0728d6 KM |
200 | BUG_ON(!modemr); |
201 | mode = ioread32(modemr); | |
202 | iounmap(modemr); | |
203 | ||
204 | if (mode & MD(1)) { | |
205 | plla_clk.rate = 1500000000; | |
206 | ||
207 | SH_CLK_SET_RATIO(&clkz_clk_ratio, 2, 3); | |
208 | SH_CLK_SET_RATIO(&clkzs_clk_ratio, 1, 6); | |
209 | SH_CLK_SET_RATIO(&clki_clk_ratio, 1, 2); | |
210 | SH_CLK_SET_RATIO(&clks_clk_ratio, 1, 6); | |
211 | SH_CLK_SET_RATIO(&clks1_clk_ratio, 1, 12); | |
212 | SH_CLK_SET_RATIO(&clks3_clk_ratio, 1, 8); | |
213 | SH_CLK_SET_RATIO(&clks4_clk_ratio, 1, 16); | |
214 | SH_CLK_SET_RATIO(&clkp_clk_ratio, 1, 24); | |
215 | SH_CLK_SET_RATIO(&clkg_clk_ratio, 1, 24); | |
216 | if (mode & MD(2)) { | |
217 | SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 36); | |
218 | SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 36); | |
219 | } else { | |
220 | SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 24); | |
221 | SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 24); | |
222 | } | |
223 | } else { | |
224 | plla_clk.rate = 1600000000; | |
225 | ||
226 | SH_CLK_SET_RATIO(&clkz_clk_ratio, 1, 2); | |
227 | SH_CLK_SET_RATIO(&clkzs_clk_ratio, 1, 8); | |
228 | SH_CLK_SET_RATIO(&clki_clk_ratio, 1, 2); | |
229 | SH_CLK_SET_RATIO(&clks_clk_ratio, 1, 8); | |
230 | SH_CLK_SET_RATIO(&clks1_clk_ratio, 1, 16); | |
231 | SH_CLK_SET_RATIO(&clks3_clk_ratio, 1, 8); | |
232 | SH_CLK_SET_RATIO(&clks4_clk_ratio, 1, 16); | |
233 | SH_CLK_SET_RATIO(&clkp_clk_ratio, 1, 32); | |
234 | SH_CLK_SET_RATIO(&clkg_clk_ratio, 1, 24); | |
235 | if (mode & MD(2)) { | |
236 | SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 32); | |
237 | SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 32); | |
238 | } else { | |
239 | SH_CLK_SET_RATIO(&clkb_clk_ratio, 1, 24); | |
240 | SH_CLK_SET_RATIO(&clkout_clk_ratio, 1, 24); | |
241 | } | |
242 | } | |
243 | ||
f411fade MD |
244 | for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++) |
245 | ret = clk_register(main_clks[k]); | |
246 | ||
247 | if (!ret) | |
64e9de2f | 248 | ret = sh_clk_mstp_register(mstp_clks, MSTP_NR); |
f411fade MD |
249 | |
250 | clkdev_add_table(lookups, ARRAY_SIZE(lookups)); | |
251 | ||
252 | if (!ret) | |
6b6a4c06 | 253 | shmobile_clk_init(); |
f411fade MD |
254 | else |
255 | panic("failed to setup r8a7779 clocks\n"); | |
256 | } |