1 /*
2  * Copyright (c) 2013 Tomasz Figa <tomasz.figa at gmail.com>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  *
8  * Common Clock Framework support for all S3C64xx SoCs.
9 */
10 
11 #include <linux/slab.h>
12 #include <linux/clk-provider.h>
13 #include <linux/of.h>
14 #include <linux/of_address.h>
15 
16 #include <dt-bindings/clock/samsung,s3c64xx-clock.h>
17 
18 #include "clk.h"
19 #include "clk-pll.h"
20 
21 /* S3C64xx clock controller register offsets. */
22 #define APLL_LOCK		0x000
23 #define MPLL_LOCK		0x004
24 #define EPLL_LOCK		0x008
25 #define APLL_CON		0x00c
26 #define MPLL_CON		0x010
27 #define EPLL_CON0		0x014
28 #define EPLL_CON1		0x018
29 #define CLK_SRC			0x01c
30 #define CLK_DIV0		0x020
31 #define CLK_DIV1		0x024
32 #define CLK_DIV2		0x028
33 #define HCLK_GATE		0x030
34 #define PCLK_GATE		0x034
35 #define SCLK_GATE		0x038
36 #define MEM0_GATE		0x03c
37 #define CLK_SRC2		0x10c
38 #define OTHERS			0x900
39 
40 /* Helper macros to define clock arrays. */
41 #define FIXED_RATE_CLOCKS(name)	\
42 		static struct samsung_fixed_rate_clock name[]
43 #define MUX_CLOCKS(name)	\
44 		static struct samsung_mux_clock name[]
45 #define DIV_CLOCKS(name)	\
46 		static struct samsung_div_clock name[]
47 #define GATE_CLOCKS(name)	\
48 		static struct samsung_gate_clock name[]
49 
50 /* Helper macros for gate types present on S3C64xx. */
51 #define GATE_BUS(_id, cname, pname, o, b) \
52 		GATE(_id, cname, pname, o, b, 0, 0)
53 #define GATE_SCLK(_id, cname, pname, o, b) \
54 		GATE(_id, cname, pname, o, b, CLK_SET_RATE_PARENT, 0)
55 #define GATE_ON(_id, cname, pname, o, b) \
56 		GATE(_id, cname, pname, o, b, CLK_IGNORE_UNUSED, 0)
57 
58 static void __iomem *reg_base;
59 static bool is_s3c6400;
60 
61 /*
62  * List of controller registers to be saved and restored during
63  * a suspend/resume cycle.
64  */
65 static unsigned long s3c64xx_clk_regs[] __initdata = {
66 	APLL_LOCK,
67 	MPLL_LOCK,
68 	EPLL_LOCK,
69 	APLL_CON,
70 	MPLL_CON,
71 	EPLL_CON0,
72 	EPLL_CON1,
73 	CLK_SRC,
74 	CLK_DIV0,
75 	CLK_DIV1,
76 	CLK_DIV2,
77 	HCLK_GATE,
78 	PCLK_GATE,
79 	SCLK_GATE,
80 };
81 
82 static unsigned long s3c6410_clk_regs[] __initdata = {
83 	CLK_SRC2,
84 	MEM0_GATE,
85 };
86 
87 /* List of parent clocks common for all S3C64xx SoCs. */
88 PNAME(spi_mmc_p)	= { "mout_epll", "dout_mpll", "fin_pll", "clk27m" };
89 PNAME(uart_p)		= { "mout_epll", "dout_mpll" };
90 PNAME(audio0_p)		= { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk0",
91 				"pcmcdclk0", "none", "none", "none" };
92 PNAME(audio1_p)		= { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk1",
93 				"pcmcdclk0", "none", "none", "none" };
94 PNAME(mfc_p)		= { "hclkx2", "mout_epll" };
95 PNAME(apll_p)		= { "fin_pll", "fout_apll" };
96 PNAME(mpll_p)		= { "fin_pll", "fout_mpll" };
97 PNAME(epll_p)		= { "fin_pll", "fout_epll" };
98 PNAME(hclkx2_p)		= { "mout_mpll", "mout_apll" };
99 
100 /* S3C6400-specific parent clocks. */
101 PNAME(scaler_lcd_p6400)	= { "mout_epll", "dout_mpll", "none", "none" };
102 PNAME(irda_p6400)	= { "mout_epll", "dout_mpll", "none", "clk48m" };
103 PNAME(uhost_p6400)	= { "clk48m", "mout_epll", "dout_mpll", "none" };
104 
105 /* S3C6410-specific parent clocks. */
106 PNAME(clk27_p6410)	= { "clk27m", "fin_pll" };
107 PNAME(scaler_lcd_p6410)	= { "mout_epll", "dout_mpll", "fin_pll", "none" };
108 PNAME(irda_p6410)	= { "mout_epll", "dout_mpll", "fin_pll", "clk48m" };
109 PNAME(uhost_p6410)	= { "clk48m", "mout_epll", "dout_mpll", "fin_pll" };
110 PNAME(audio2_p6410)	= { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk2",
111 				"pcmcdclk1", "none", "none", "none" };
112 
113 /* Fixed rate clocks generated outside the SoC. */
114 FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_ext_clks) __initdata = {
115 	FRATE(0, "fin_pll", NULL, 0, 0),
116 	FRATE(0, "xusbxti", NULL, 0, 0),
117 };
118 
119 /* Fixed rate clocks generated inside the SoC. */
120 FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_clks) __initdata = {
121 	FRATE(CLK27M, "clk27m", NULL, 0, 27000000),
122 	FRATE(CLK48M, "clk48m", NULL, 0, 48000000),
123 };
124 
125 /* List of clock muxes present on all S3C64xx SoCs. */
126 MUX_CLOCKS(s3c64xx_mux_clks) __initdata = {
127 	MUX_F(0, "mout_syncmux", hclkx2_p, OTHERS, 6, 1, 0, CLK_MUX_READ_ONLY),
128 	MUX(MOUT_APLL, "mout_apll", apll_p, CLK_SRC, 0, 1),
129 	MUX(MOUT_MPLL, "mout_mpll", mpll_p, CLK_SRC, 1, 1),
130 	MUX(MOUT_EPLL, "mout_epll", epll_p, CLK_SRC, 2, 1),
131 	MUX(MOUT_MFC, "mout_mfc", mfc_p, CLK_SRC, 4, 1),
132 	MUX(MOUT_AUDIO0, "mout_audio0", audio0_p, CLK_SRC, 7, 3),
133 	MUX(MOUT_AUDIO1, "mout_audio1", audio1_p, CLK_SRC, 10, 3),
134 	MUX(MOUT_UART, "mout_uart", uart_p, CLK_SRC, 13, 1),
135 	MUX(MOUT_SPI0, "mout_spi0", spi_mmc_p, CLK_SRC, 14, 2),
136 	MUX(MOUT_SPI1, "mout_spi1", spi_mmc_p, CLK_SRC, 16, 2),
137 	MUX(MOUT_MMC0, "mout_mmc0", spi_mmc_p, CLK_SRC, 18, 2),
138 	MUX(MOUT_MMC1, "mout_mmc1", spi_mmc_p, CLK_SRC, 20, 2),
139 	MUX(MOUT_MMC2, "mout_mmc2", spi_mmc_p, CLK_SRC, 22, 2),
140 };
141 
142 /* List of clock muxes present on S3C6400. */
143 MUX_CLOCKS(s3c6400_mux_clks) __initdata = {
144 	MUX(MOUT_UHOST, "mout_uhost", uhost_p6400, CLK_SRC, 5, 2),
145 	MUX(MOUT_IRDA, "mout_irda", irda_p6400, CLK_SRC, 24, 2),
146 	MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6400, CLK_SRC, 26, 2),
147 	MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6400, CLK_SRC, 28, 2),
148 };
149 
150 /* List of clock muxes present on S3C6410. */
151 MUX_CLOCKS(s3c6410_mux_clks) __initdata = {
152 	MUX(MOUT_UHOST, "mout_uhost", uhost_p6410, CLK_SRC, 5, 2),
153 	MUX(MOUT_IRDA, "mout_irda", irda_p6410, CLK_SRC, 24, 2),
154 	MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6410, CLK_SRC, 26, 2),
155 	MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6410, CLK_SRC, 28, 2),
156 	MUX(MOUT_DAC27, "mout_dac27", clk27_p6410, CLK_SRC, 30, 1),
157 	MUX(MOUT_TV27, "mout_tv27", clk27_p6410, CLK_SRC, 31, 1),
158 	MUX(MOUT_AUDIO2, "mout_audio2", audio2_p6410, CLK_SRC2, 0, 3),
159 };
160 
161 /* List of clock dividers present on all S3C64xx SoCs. */
162 DIV_CLOCKS(s3c64xx_div_clks) __initdata = {
163 	DIV(DOUT_MPLL, "dout_mpll", "mout_mpll", CLK_DIV0, 4, 1),
164 	DIV(HCLKX2, "hclkx2", "mout_syncmux", CLK_DIV0, 9, 3),
165 	DIV(HCLK, "hclk", "hclkx2", CLK_DIV0, 8, 1),
166 	DIV(PCLK, "pclk", "hclkx2", CLK_DIV0, 12, 4),
167 	DIV(DOUT_SECUR, "dout_secur", "hclkx2", CLK_DIV0, 18, 2),
168 	DIV(DOUT_CAM, "dout_cam", "hclkx2", CLK_DIV0, 20, 4),
169 	DIV(DOUT_JPEG, "dout_jpeg", "hclkx2", CLK_DIV0, 24, 4),
170 	DIV(DOUT_MFC, "dout_mfc", "mout_mfc", CLK_DIV0, 28, 4),
171 	DIV(DOUT_MMC0, "dout_mmc0", "mout_mmc0", CLK_DIV1, 0, 4),
172 	DIV(DOUT_MMC1, "dout_mmc1", "mout_mmc1", CLK_DIV1, 4, 4),
173 	DIV(DOUT_MMC2, "dout_mmc2", "mout_mmc2", CLK_DIV1, 8, 4),
174 	DIV(DOUT_LCD, "dout_lcd", "mout_lcd", CLK_DIV1, 12, 4),
175 	DIV(DOUT_SCALER, "dout_scaler", "mout_scaler", CLK_DIV1, 16, 4),
176 	DIV(DOUT_UHOST, "dout_uhost", "mout_uhost", CLK_DIV1, 20, 4),
177 	DIV(DOUT_SPI0, "dout_spi0", "mout_spi0", CLK_DIV2, 0, 4),
178 	DIV(DOUT_SPI1, "dout_spi1", "mout_spi1", CLK_DIV2, 4, 4),
179 	DIV(DOUT_AUDIO0, "dout_audio0", "mout_audio0", CLK_DIV2, 8, 4),
180 	DIV(DOUT_AUDIO1, "dout_audio1", "mout_audio1", CLK_DIV2, 12, 4),
181 	DIV(DOUT_UART, "dout_uart", "mout_uart", CLK_DIV2, 16, 4),
182 	DIV(DOUT_IRDA, "dout_irda", "mout_irda", CLK_DIV2, 20, 4),
183 };
184 
185 /* List of clock dividers present on S3C6400. */
186 DIV_CLOCKS(s3c6400_div_clks) __initdata = {
187 	DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 3),
188 };
189 
190 /* List of clock dividers present on S3C6410. */
191 DIV_CLOCKS(s3c6410_div_clks) __initdata = {
192 	DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 4),
193 	DIV(DOUT_FIMC, "dout_fimc", "hclk", CLK_DIV1, 24, 4),
194 	DIV(DOUT_AUDIO2, "dout_audio2", "mout_audio2", CLK_DIV2, 24, 4),
195 };
196 
197 /* List of clock gates present on all S3C64xx SoCs. */
198 GATE_CLOCKS(s3c64xx_gate_clks) __initdata = {
199 	GATE_BUS(HCLK_UHOST, "hclk_uhost", "hclk", HCLK_GATE, 29),
200 	GATE_BUS(HCLK_SECUR, "hclk_secur", "hclk", HCLK_GATE, 28),
201 	GATE_BUS(HCLK_SDMA1, "hclk_sdma1", "hclk", HCLK_GATE, 27),
202 	GATE_BUS(HCLK_SDMA0, "hclk_sdma0", "hclk", HCLK_GATE, 26),
203 	GATE_ON(HCLK_DDR1, "hclk_ddr1", "hclk", HCLK_GATE, 24),
204 	GATE_BUS(HCLK_USB, "hclk_usb", "hclk", HCLK_GATE, 20),
205 	GATE_BUS(HCLK_HSMMC2, "hclk_hsmmc2", "hclk", HCLK_GATE, 19),
206 	GATE_BUS(HCLK_HSMMC1, "hclk_hsmmc1", "hclk", HCLK_GATE, 18),
207 	GATE_BUS(HCLK_HSMMC0, "hclk_hsmmc0", "hclk", HCLK_GATE, 17),
208 	GATE_BUS(HCLK_MDP, "hclk_mdp", "hclk", HCLK_GATE, 16),
209 	GATE_BUS(HCLK_DHOST, "hclk_dhost", "hclk", HCLK_GATE, 15),
210 	GATE_BUS(HCLK_IHOST, "hclk_ihost", "hclk", HCLK_GATE, 14),
211 	GATE_BUS(HCLK_DMA1, "hclk_dma1", "hclk", HCLK_GATE, 13),
212 	GATE_BUS(HCLK_DMA0, "hclk_dma0", "hclk", HCLK_GATE, 12),
213 	GATE_BUS(HCLK_JPEG, "hclk_jpeg", "hclk", HCLK_GATE, 11),
214 	GATE_BUS(HCLK_CAMIF, "hclk_camif", "hclk", HCLK_GATE, 10),
215 	GATE_BUS(HCLK_SCALER, "hclk_scaler", "hclk", HCLK_GATE, 9),
216 	GATE_BUS(HCLK_2D, "hclk_2d", "hclk", HCLK_GATE, 8),
217 	GATE_BUS(HCLK_TV, "hclk_tv", "hclk", HCLK_GATE, 7),
218 	GATE_BUS(HCLK_POST0, "hclk_post0", "hclk", HCLK_GATE, 5),
219 	GATE_BUS(HCLK_ROT, "hclk_rot", "hclk", HCLK_GATE, 4),
220 	GATE_BUS(HCLK_LCD, "hclk_lcd", "hclk", HCLK_GATE, 3),
221 	GATE_BUS(HCLK_TZIC, "hclk_tzic", "hclk", HCLK_GATE, 2),
222 	GATE_ON(HCLK_INTC, "hclk_intc", "hclk", HCLK_GATE, 1),
223 	GATE_ON(PCLK_SKEY, "pclk_skey", "pclk", PCLK_GATE, 24),
224 	GATE_ON(PCLK_CHIPID, "pclk_chipid", "pclk", PCLK_GATE, 23),
225 	GATE_BUS(PCLK_SPI1, "pclk_spi1", "pclk", PCLK_GATE, 22),
226 	GATE_BUS(PCLK_SPI0, "pclk_spi0", "pclk", PCLK_GATE, 21),
227 	GATE_BUS(PCLK_HSIRX, "pclk_hsirx", "pclk", PCLK_GATE, 20),
228 	GATE_BUS(PCLK_HSITX, "pclk_hsitx", "pclk", PCLK_GATE, 19),
229 	GATE_ON(PCLK_GPIO, "pclk_gpio", "pclk", PCLK_GATE, 18),
230 	GATE_BUS(PCLK_IIC0, "pclk_iic0", "pclk", PCLK_GATE, 17),
231 	GATE_BUS(PCLK_IIS1, "pclk_iis1", "pclk", PCLK_GATE, 16),
232 	GATE_BUS(PCLK_IIS0, "pclk_iis0", "pclk", PCLK_GATE, 15),
233 	GATE_BUS(PCLK_AC97, "pclk_ac97", "pclk", PCLK_GATE, 14),
234 	GATE_BUS(PCLK_TZPC, "pclk_tzpc", "pclk", PCLK_GATE, 13),
235 	GATE_BUS(PCLK_TSADC, "pclk_tsadc", "pclk", PCLK_GATE, 12),
236 	GATE_BUS(PCLK_KEYPAD, "pclk_keypad", "pclk", PCLK_GATE, 11),
237 	GATE_BUS(PCLK_IRDA, "pclk_irda", "pclk", PCLK_GATE, 10),
238 	GATE_BUS(PCLK_PCM1, "pclk_pcm1", "pclk", PCLK_GATE, 9),
239 	GATE_BUS(PCLK_PCM0, "pclk_pcm0", "pclk", PCLK_GATE, 8),
240 	GATE_BUS(PCLK_PWM, "pclk_pwm", "pclk", PCLK_GATE, 7),
241 	GATE_BUS(PCLK_RTC, "pclk_rtc", "pclk", PCLK_GATE, 6),
242 	GATE_BUS(PCLK_WDT, "pclk_wdt", "pclk", PCLK_GATE, 5),
243 	GATE_BUS(PCLK_UART3, "pclk_uart3", "pclk", PCLK_GATE, 4),
244 	GATE_BUS(PCLK_UART2, "pclk_uart2", "pclk", PCLK_GATE, 3),
245 	GATE_BUS(PCLK_UART1, "pclk_uart1", "pclk", PCLK_GATE, 2),
246 	GATE_BUS(PCLK_UART0, "pclk_uart0", "pclk", PCLK_GATE, 1),
247 	GATE_BUS(PCLK_MFC, "pclk_mfc", "pclk", PCLK_GATE, 0),
248 	GATE_SCLK(SCLK_UHOST, "sclk_uhost", "dout_uhost", SCLK_GATE, 30),
249 	GATE_SCLK(SCLK_MMC2_48, "sclk_mmc2_48", "clk48m", SCLK_GATE, 29),
250 	GATE_SCLK(SCLK_MMC1_48, "sclk_mmc1_48", "clk48m", SCLK_GATE, 28),
251 	GATE_SCLK(SCLK_MMC0_48, "sclk_mmc0_48", "clk48m", SCLK_GATE, 27),
252 	GATE_SCLK(SCLK_MMC2, "sclk_mmc2", "dout_mmc2", SCLK_GATE, 26),
253 	GATE_SCLK(SCLK_MMC1, "sclk_mmc1", "dout_mmc1", SCLK_GATE, 25),
254 	GATE_SCLK(SCLK_MMC0, "sclk_mmc0", "dout_mmc0", SCLK_GATE, 24),
255 	GATE_SCLK(SCLK_SPI1_48, "sclk_spi1_48", "clk48m", SCLK_GATE, 23),
256 	GATE_SCLK(SCLK_SPI0_48, "sclk_spi0_48", "clk48m", SCLK_GATE, 22),
257 	GATE_SCLK(SCLK_SPI1, "sclk_spi1", "dout_spi1", SCLK_GATE, 21),
258 	GATE_SCLK(SCLK_SPI0, "sclk_spi0", "dout_spi0", SCLK_GATE, 20),
259 	GATE_SCLK(SCLK_DAC27, "sclk_dac27", "mout_dac27", SCLK_GATE, 19),
260 	GATE_SCLK(SCLK_TV27, "sclk_tv27", "mout_tv27", SCLK_GATE, 18),
261 	GATE_SCLK(SCLK_SCALER27, "sclk_scaler27", "clk27m", SCLK_GATE, 17),
262 	GATE_SCLK(SCLK_SCALER, "sclk_scaler", "dout_scaler", SCLK_GATE, 16),
263 	GATE_SCLK(SCLK_LCD27, "sclk_lcd27", "clk27m", SCLK_GATE, 15),
264 	GATE_SCLK(SCLK_LCD, "sclk_lcd", "dout_lcd", SCLK_GATE, 14),
265 	GATE_SCLK(SCLK_POST0_27, "sclk_post0_27", "clk27m", SCLK_GATE, 12),
266 	GATE_SCLK(SCLK_POST0, "sclk_post0", "dout_lcd", SCLK_GATE, 10),
267 	GATE_SCLK(SCLK_AUDIO1, "sclk_audio1", "dout_audio1", SCLK_GATE, 9),
268 	GATE_SCLK(SCLK_AUDIO0, "sclk_audio0", "dout_audio0", SCLK_GATE, 8),
269 	GATE_SCLK(SCLK_SECUR, "sclk_secur", "dout_secur", SCLK_GATE, 7),
270 	GATE_SCLK(SCLK_IRDA, "sclk_irda", "dout_irda", SCLK_GATE, 6),
271 	GATE_SCLK(SCLK_UART, "sclk_uart", "dout_uart", SCLK_GATE, 5),
272 	GATE_SCLK(SCLK_MFC, "sclk_mfc", "dout_mfc", SCLK_GATE, 3),
273 	GATE_SCLK(SCLK_CAM, "sclk_cam", "dout_cam", SCLK_GATE, 2),
274 	GATE_SCLK(SCLK_JPEG, "sclk_jpeg", "dout_jpeg", SCLK_GATE, 1),
275 };
276 
277 /* List of clock gates present on S3C6400. */
278 GATE_CLOCKS(s3c6400_gate_clks) __initdata = {
279 	GATE_ON(HCLK_DDR0, "hclk_ddr0", "hclk", HCLK_GATE, 23),
280 	GATE_SCLK(SCLK_ONENAND, "sclk_onenand", "parent", SCLK_GATE, 4),
281 };
282 
283 /* List of clock gates present on S3C6410. */
284 GATE_CLOCKS(s3c6410_gate_clks) __initdata = {
285 	GATE_BUS(HCLK_3DSE, "hclk_3dse", "hclk", HCLK_GATE, 31),
286 	GATE_ON(HCLK_IROM, "hclk_irom", "hclk", HCLK_GATE, 25),
287 	GATE_ON(HCLK_MEM1, "hclk_mem1", "hclk", HCLK_GATE, 22),
288 	GATE_ON(HCLK_MEM0, "hclk_mem0", "hclk", HCLK_GATE, 21),
289 	GATE_BUS(HCLK_MFC, "hclk_mfc", "hclk", HCLK_GATE, 0),
290 	GATE_BUS(PCLK_IIC1, "pclk_iic1", "pclk", PCLK_GATE, 27),
291 	GATE_BUS(PCLK_IIS2, "pclk_iis2", "pclk", PCLK_GATE, 26),
292 	GATE_SCLK(SCLK_FIMC, "sclk_fimc", "dout_fimc", SCLK_GATE, 13),
293 	GATE_SCLK(SCLK_AUDIO2, "sclk_audio2", "dout_audio2", SCLK_GATE, 11),
294 	GATE_BUS(MEM0_CFCON, "mem0_cfcon", "hclk_mem0", MEM0_GATE, 5),
295 	GATE_BUS(MEM0_ONENAND1, "mem0_onenand1", "hclk_mem0", MEM0_GATE, 4),
296 	GATE_BUS(MEM0_ONENAND0, "mem0_onenand0", "hclk_mem0", MEM0_GATE, 3),
297 	GATE_BUS(MEM0_NFCON, "mem0_nfcon", "hclk_mem0", MEM0_GATE, 2),
298 	GATE_ON(MEM0_SROM, "mem0_srom", "hclk_mem0", MEM0_GATE, 1),
299 };
300 
301 /* List of PLL clocks. */
302 static struct samsung_pll_clock s3c64xx_pll_clks[] __initdata = {
303 	PLL(pll_6552, FOUT_APLL, "fout_apll", "fin_pll",
304 					APLL_LOCK, APLL_CON, NULL),
305 	PLL(pll_6552, FOUT_MPLL, "fout_mpll", "fin_pll",
306 					MPLL_LOCK, MPLL_CON, NULL),
307 	PLL(pll_6553, FOUT_EPLL, "fout_epll", "fin_pll",
308 					EPLL_LOCK, EPLL_CON0, NULL),
309 };
310 
311 /* Aliases for common s3c64xx clocks. */
312 static struct samsung_clock_alias s3c64xx_clock_aliases[] = {
313 	ALIAS(FOUT_APLL, NULL, "fout_apll"),
314 	ALIAS(FOUT_MPLL, NULL, "fout_mpll"),
315 	ALIAS(FOUT_EPLL, NULL, "fout_epll"),
316 	ALIAS(MOUT_EPLL, NULL, "mout_epll"),
317 	ALIAS(DOUT_MPLL, NULL, "dout_mpll"),
318 	ALIAS(HCLKX2, NULL, "hclk2"),
319 	ALIAS(HCLK, NULL, "hclk"),
320 	ALIAS(PCLK, NULL, "pclk"),
321 	ALIAS(PCLK, NULL, "clk_uart_baud2"),
322 	ALIAS(ARMCLK, NULL, "armclk"),
323 	ALIAS(HCLK_UHOST, "s3c2410-ohci", "usb-host"),
324 	ALIAS(HCLK_USB, "s3c-hsotg", "otg"),
325 	ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "hsmmc"),
326 	ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "mmc_busclk.0"),
327 	ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"),
328 	ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
329 	ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
330 	ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
331 	ALIAS(HCLK_DMA1, "dma-pl080s.1", "apb_pclk"),
332 	ALIAS(HCLK_DMA0, "dma-pl080s.0", "apb_pclk"),
333 	ALIAS(HCLK_CAMIF, "s3c-camif", "camif"),
334 	ALIAS(HCLK_LCD, "s3c-fb", "lcd"),
335 	ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi"),
336 	ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi"),
337 	ALIAS(PCLK_IIC0, "s3c2440-i2c.0", "i2c"),
338 	ALIAS(PCLK_IIS1, "samsung-i2s.1", "iis"),
339 	ALIAS(PCLK_IIS0, "samsung-i2s.0", "iis"),
340 	ALIAS(PCLK_AC97, "samsung-ac97", "ac97"),
341 	ALIAS(PCLK_TSADC, "s3c64xx-adc", "adc"),
342 	ALIAS(PCLK_KEYPAD, "samsung-keypad", "keypad"),
343 	ALIAS(PCLK_PCM1, "samsung-pcm.1", "pcm"),
344 	ALIAS(PCLK_PCM0, "samsung-pcm.0", "pcm"),
345 	ALIAS(PCLK_PWM, NULL, "timers"),
346 	ALIAS(PCLK_RTC, "s3c64xx-rtc", "rtc"),
347 	ALIAS(PCLK_WDT, NULL, "watchdog"),
348 	ALIAS(PCLK_UART3, "s3c6400-uart.3", "uart"),
349 	ALIAS(PCLK_UART2, "s3c6400-uart.2", "uart"),
350 	ALIAS(PCLK_UART1, "s3c6400-uart.1", "uart"),
351 	ALIAS(PCLK_UART0, "s3c6400-uart.0", "uart"),
352 	ALIAS(SCLK_UHOST, "s3c2410-ohci", "usb-bus-host"),
353 	ALIAS(SCLK_MMC2, "s3c-sdhci.2", "mmc_busclk.2"),
354 	ALIAS(SCLK_MMC1, "s3c-sdhci.1", "mmc_busclk.2"),
355 	ALIAS(SCLK_MMC0, "s3c-sdhci.0", "mmc_busclk.2"),
356 	ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi_busclk0"),
357 	ALIAS(SCLK_SPI1, "s3c6410-spi.1", "spi_busclk2"),
358 	ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi_busclk0"),
359 	ALIAS(SCLK_SPI0, "s3c6410-spi.0", "spi_busclk2"),
360 	ALIAS(SCLK_AUDIO1, "samsung-pcm.1", "audio-bus"),
361 	ALIAS(SCLK_AUDIO1, "samsung-i2s.1", "audio-bus"),
362 	ALIAS(SCLK_AUDIO0, "samsung-pcm.0", "audio-bus"),
363 	ALIAS(SCLK_AUDIO0, "samsung-i2s.0", "audio-bus"),
364 	ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
365 	ALIAS(SCLK_CAM, "s3c-camif", "camera"),
366 };
367 
368 /* Aliases for s3c6400-specific clocks. */
369 static struct samsung_clock_alias s3c6400_clock_aliases[] = {
370 	/* Nothing to place here yet. */
371 };
372 
373 /* Aliases for s3c6410-specific clocks. */
374 static struct samsung_clock_alias s3c6410_clock_aliases[] = {
375 	ALIAS(PCLK_IIC1, "s3c2440-i2c.1", "i2c"),
376 	ALIAS(PCLK_IIS2, "samsung-i2s.2", "iis"),
377 	ALIAS(SCLK_FIMC, "s3c-camif", "fimc"),
378 	ALIAS(SCLK_AUDIO2, "samsung-i2s.2", "audio-bus"),
379 	ALIAS(MEM0_SROM, NULL, "srom"),
380 };
381 
382 static void __init s3c64xx_clk_register_fixed_ext(
383 				struct samsung_clk_provider *ctx,
384 				unsigned long fin_pll_f,
385 				unsigned long xusbxti_f)
386 {
387 	s3c64xx_fixed_rate_ext_clks[0].fixed_rate = fin_pll_f;
388 	s3c64xx_fixed_rate_ext_clks[1].fixed_rate = xusbxti_f;
389 	samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_ext_clks,
390 				ARRAY_SIZE(s3c64xx_fixed_rate_ext_clks));
391 }
392 
393 /* Register s3c64xx clocks. */
394 void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
395 			     unsigned long xusbxti_f, bool s3c6400,
396 			     void __iomem *base)
397 {
398 	struct samsung_clk_provider *ctx;
399 
400 	reg_base = base;
401 	is_s3c6400 = s3c6400;
402 
403 	if (np) {
404 		reg_base = of_iomap(np, 0);
405 		if (!reg_base)
406 			panic("%s: failed to map registers\n", __func__);
407 	}
408 
409 	ctx = samsung_clk_init(np, reg_base, NR_CLKS);
410 
411 	/* Register external clocks. */
412 	if (!np)
413 		s3c64xx_clk_register_fixed_ext(ctx, xtal_f, xusbxti_f);
414 
415 	/* Register PLLs. */
416 	samsung_clk_register_pll(ctx, s3c64xx_pll_clks,
417 				ARRAY_SIZE(s3c64xx_pll_clks), reg_base);
418 
419 	/* Register common internal clocks. */
420 	samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_clks,
421 					ARRAY_SIZE(s3c64xx_fixed_rate_clks));
422 	samsung_clk_register_mux(ctx, s3c64xx_mux_clks,
423 					ARRAY_SIZE(s3c64xx_mux_clks));
424 	samsung_clk_register_div(ctx, s3c64xx_div_clks,
425 					ARRAY_SIZE(s3c64xx_div_clks));
426 	samsung_clk_register_gate(ctx, s3c64xx_gate_clks,
427 					ARRAY_SIZE(s3c64xx_gate_clks));
428 
429 	/* Register SoC-specific clocks. */
430 	if (is_s3c6400) {
431 		samsung_clk_register_mux(ctx, s3c6400_mux_clks,
432 					ARRAY_SIZE(s3c6400_mux_clks));
433 		samsung_clk_register_div(ctx, s3c6400_div_clks,
434 					ARRAY_SIZE(s3c6400_div_clks));
435 		samsung_clk_register_gate(ctx, s3c6400_gate_clks,
436 					ARRAY_SIZE(s3c6400_gate_clks));
437 		samsung_clk_register_alias(ctx, s3c6400_clock_aliases,
438 					ARRAY_SIZE(s3c6400_clock_aliases));
439 	} else {
440 		samsung_clk_register_mux(ctx, s3c6410_mux_clks,
441 					ARRAY_SIZE(s3c6410_mux_clks));
442 		samsung_clk_register_div(ctx, s3c6410_div_clks,
443 					ARRAY_SIZE(s3c6410_div_clks));
444 		samsung_clk_register_gate(ctx, s3c6410_gate_clks,
445 					ARRAY_SIZE(s3c6410_gate_clks));
446 		samsung_clk_register_alias(ctx, s3c6410_clock_aliases,
447 					ARRAY_SIZE(s3c6410_clock_aliases));
448 	}
449 
450 	samsung_clk_register_alias(ctx, s3c64xx_clock_aliases,
451 					ARRAY_SIZE(s3c64xx_clock_aliases));
452 
453 	samsung_clk_sleep_init(reg_base, s3c64xx_clk_regs,
454 			       ARRAY_SIZE(s3c64xx_clk_regs));
455 	if (!is_s3c6400)
456 		samsung_clk_sleep_init(reg_base, s3c6410_clk_regs,
457 				       ARRAY_SIZE(s3c6410_clk_regs));
458 
459 	samsung_clk_of_add_provider(np, ctx);
460 
461 	pr_info("%s clocks: apll = %lu, mpll = %lu\n"
462 		"\tepll = %lu, arm_clk = %lu\n",
463 		is_s3c6400 ? "S3C6400" : "S3C6410",
464 		_get_rate("fout_apll"),	_get_rate("fout_mpll"),
465 		_get_rate("fout_epll"), _get_rate("armclk"));
466 }
467 
468 static void __init s3c6400_clk_init(struct device_node *np)
469 {
470 	s3c64xx_clk_init(np, 0, 0, true, NULL);
471 }
472 CLK_OF_DECLARE(s3c6400_clk, "samsung,s3c6400-clock", s3c6400_clk_init);
473 
474 static void __init s3c6410_clk_init(struct device_node *np)
475 {
476 	s3c64xx_clk_init(np, 0, 0, false, NULL);
477 }
478 CLK_OF_DECLARE(s3c6410_clk, "samsung,s3c6410-clock", s3c6410_clk_init);
479