1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2013 Tomasz Figa <tomasz.figa at gmail.com>
4  *
5  * Common Clock Framework support for all S3C64xx SoCs.
6 */
7 
8 #include <linux/slab.h>
9 #include <linux/clk-provider.h>
10 #include <linux/clk/samsung.h>
11 #include <linux/of.h>
12 #include <linux/of_address.h>
13 
14 #include <dt-bindings/clock/samsung,s3c64xx-clock.h>
15 
16 #include "clk.h"
17 #include "clk-pll.h"
18 
19 /* S3C64xx clock controller register offsets. */
20 #define APLL_LOCK		0x000
21 #define MPLL_LOCK		0x004
22 #define EPLL_LOCK		0x008
23 #define APLL_CON		0x00c
24 #define MPLL_CON		0x010
25 #define EPLL_CON0		0x014
26 #define EPLL_CON1		0x018
27 #define CLK_SRC			0x01c
28 #define CLK_DIV0		0x020
29 #define CLK_DIV1		0x024
30 #define CLK_DIV2		0x028
31 #define HCLK_GATE		0x030
32 #define PCLK_GATE		0x034
33 #define SCLK_GATE		0x038
34 #define MEM0_GATE		0x03c
35 #define CLK_SRC2		0x10c
36 #define OTHERS			0x900
37 
38 /* Helper macros to define clock arrays. */
39 #define FIXED_RATE_CLOCKS(name)	\
40 		static struct samsung_fixed_rate_clock name[]
41 #define MUX_CLOCKS(name)	\
42 		static struct samsung_mux_clock name[]
43 #define DIV_CLOCKS(name)	\
44 		static struct samsung_div_clock name[]
45 #define GATE_CLOCKS(name)	\
46 		static struct samsung_gate_clock name[]
47 
48 /* Helper macros for gate types present on S3C64xx. */
49 #define GATE_BUS(_id, cname, pname, o, b) \
50 		GATE(_id, cname, pname, o, b, 0, 0)
51 #define GATE_SCLK(_id, cname, pname, o, b) \
52 		GATE(_id, cname, pname, o, b, CLK_SET_RATE_PARENT, 0)
53 #define GATE_ON(_id, cname, pname, o, b) \
54 		GATE(_id, cname, pname, o, b, CLK_IGNORE_UNUSED, 0)
55 
56 static void __iomem *reg_base;
57 static bool is_s3c6400;
58 
59 /*
60  * List of controller registers to be saved and restored during
61  * a suspend/resume cycle.
62  */
63 static unsigned long s3c64xx_clk_regs[] __initdata = {
64 	APLL_LOCK,
65 	MPLL_LOCK,
66 	EPLL_LOCK,
67 	APLL_CON,
68 	MPLL_CON,
69 	EPLL_CON0,
70 	EPLL_CON1,
71 	CLK_SRC,
72 	CLK_DIV0,
73 	CLK_DIV1,
74 	CLK_DIV2,
75 	HCLK_GATE,
76 	PCLK_GATE,
77 	SCLK_GATE,
78 };
79 
80 static unsigned long s3c6410_clk_regs[] __initdata = {
81 	CLK_SRC2,
82 	MEM0_GATE,
83 };
84 
85 /* List of parent clocks common for all S3C64xx SoCs. */
86 PNAME(spi_mmc_p)	= { "mout_epll", "dout_mpll", "fin_pll", "clk27m" };
87 PNAME(uart_p)		= { "mout_epll", "dout_mpll" };
88 PNAME(audio0_p)		= { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk0",
89 				"pcmcdclk0", "none", "none", "none" };
90 PNAME(audio1_p)		= { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk1",
91 				"pcmcdclk0", "none", "none", "none" };
92 PNAME(mfc_p)		= { "hclkx2", "mout_epll" };
93 PNAME(apll_p)		= { "fin_pll", "fout_apll" };
94 PNAME(mpll_p)		= { "fin_pll", "fout_mpll" };
95 PNAME(epll_p)		= { "fin_pll", "fout_epll" };
96 PNAME(hclkx2_p)		= { "mout_mpll", "mout_apll" };
97 
98 /* S3C6400-specific parent clocks. */
99 PNAME(scaler_lcd_p6400)	= { "mout_epll", "dout_mpll", "none", "none" };
100 PNAME(irda_p6400)	= { "mout_epll", "dout_mpll", "none", "clk48m" };
101 PNAME(uhost_p6400)	= { "clk48m", "mout_epll", "dout_mpll", "none" };
102 
103 /* S3C6410-specific parent clocks. */
104 PNAME(clk27_p6410)	= { "clk27m", "fin_pll" };
105 PNAME(scaler_lcd_p6410)	= { "mout_epll", "dout_mpll", "fin_pll", "none" };
106 PNAME(irda_p6410)	= { "mout_epll", "dout_mpll", "fin_pll", "clk48m" };
107 PNAME(uhost_p6410)	= { "clk48m", "mout_epll", "dout_mpll", "fin_pll" };
108 PNAME(audio2_p6410)	= { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk2",
109 				"pcmcdclk1", "none", "none", "none" };
110 
111 /* Fixed rate clocks generated outside the SoC. */
112 FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_ext_clks) __initdata = {
113 	FRATE(0, "fin_pll", NULL, 0, 0),
114 	FRATE(0, "xusbxti", NULL, 0, 0),
115 };
116 
117 /* Fixed rate clocks generated inside the SoC. */
118 FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_clks) __initdata = {
119 	FRATE(CLK27M, "clk27m", NULL, 0, 27000000),
120 	FRATE(CLK48M, "clk48m", NULL, 0, 48000000),
121 };
122 
123 /* List of clock muxes present on all S3C64xx SoCs. */
124 MUX_CLOCKS(s3c64xx_mux_clks) __initdata = {
125 	MUX_F(0, "mout_syncmux", hclkx2_p, OTHERS, 6, 1, 0, CLK_MUX_READ_ONLY),
126 	MUX(MOUT_APLL, "mout_apll", apll_p, CLK_SRC, 0, 1),
127 	MUX(MOUT_MPLL, "mout_mpll", mpll_p, CLK_SRC, 1, 1),
128 	MUX(MOUT_EPLL, "mout_epll", epll_p, CLK_SRC, 2, 1),
129 	MUX(MOUT_MFC, "mout_mfc", mfc_p, CLK_SRC, 4, 1),
130 	MUX(MOUT_AUDIO0, "mout_audio0", audio0_p, CLK_SRC, 7, 3),
131 	MUX(MOUT_AUDIO1, "mout_audio1", audio1_p, CLK_SRC, 10, 3),
132 	MUX(MOUT_UART, "mout_uart", uart_p, CLK_SRC, 13, 1),
133 	MUX(MOUT_SPI0, "mout_spi0", spi_mmc_p, CLK_SRC, 14, 2),
134 	MUX(MOUT_SPI1, "mout_spi1", spi_mmc_p, CLK_SRC, 16, 2),
135 	MUX(MOUT_MMC0, "mout_mmc0", spi_mmc_p, CLK_SRC, 18, 2),
136 	MUX(MOUT_MMC1, "mout_mmc1", spi_mmc_p, CLK_SRC, 20, 2),
137 	MUX(MOUT_MMC2, "mout_mmc2", spi_mmc_p, CLK_SRC, 22, 2),
138 };
139 
140 /* List of clock muxes present on S3C6400. */
141 MUX_CLOCKS(s3c6400_mux_clks) __initdata = {
142 	MUX(MOUT_UHOST, "mout_uhost", uhost_p6400, CLK_SRC, 5, 2),
143 	MUX(MOUT_IRDA, "mout_irda", irda_p6400, CLK_SRC, 24, 2),
144 	MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6400, CLK_SRC, 26, 2),
145 	MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6400, CLK_SRC, 28, 2),
146 };
147 
148 /* List of clock muxes present on S3C6410. */
149 MUX_CLOCKS(s3c6410_mux_clks) __initdata = {
150 	MUX(MOUT_UHOST, "mout_uhost", uhost_p6410, CLK_SRC, 5, 2),
151 	MUX(MOUT_IRDA, "mout_irda", irda_p6410, CLK_SRC, 24, 2),
152 	MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6410, CLK_SRC, 26, 2),
153 	MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6410, CLK_SRC, 28, 2),
154 	MUX(MOUT_DAC27, "mout_dac27", clk27_p6410, CLK_SRC, 30, 1),
155 	MUX(MOUT_TV27, "mout_tv27", clk27_p6410, CLK_SRC, 31, 1),
156 	MUX(MOUT_AUDIO2, "mout_audio2", audio2_p6410, CLK_SRC2, 0, 3),
157 };
158 
159 /* List of clock dividers present on all S3C64xx SoCs. */
160 DIV_CLOCKS(s3c64xx_div_clks) __initdata = {
161 	DIV(DOUT_MPLL, "dout_mpll", "mout_mpll", CLK_DIV0, 4, 1),
162 	DIV(HCLKX2, "hclkx2", "mout_syncmux", CLK_DIV0, 9, 3),
163 	DIV(HCLK, "hclk", "hclkx2", CLK_DIV0, 8, 1),
164 	DIV(PCLK, "pclk", "hclkx2", CLK_DIV0, 12, 4),
165 	DIV(DOUT_SECUR, "dout_secur", "hclkx2", CLK_DIV0, 18, 2),
166 	DIV(DOUT_CAM, "dout_cam", "hclkx2", CLK_DIV0, 20, 4),
167 	DIV(DOUT_JPEG, "dout_jpeg", "hclkx2", CLK_DIV0, 24, 4),
168 	DIV(DOUT_MFC, "dout_mfc", "mout_mfc", CLK_DIV0, 28, 4),
169 	DIV(DOUT_MMC0, "dout_mmc0", "mout_mmc0", CLK_DIV1, 0, 4),
170 	DIV(DOUT_MMC1, "dout_mmc1", "mout_mmc1", CLK_DIV1, 4, 4),
171 	DIV(DOUT_MMC2, "dout_mmc2", "mout_mmc2", CLK_DIV1, 8, 4),
172 	DIV(DOUT_LCD, "dout_lcd", "mout_lcd", CLK_DIV1, 12, 4),
173 	DIV(DOUT_SCALER, "dout_scaler", "mout_scaler", CLK_DIV1, 16, 4),
174 	DIV(DOUT_UHOST, "dout_uhost", "mout_uhost", CLK_DIV1, 20, 4),
175 	DIV(DOUT_SPI0, "dout_spi0", "mout_spi0", CLK_DIV2, 0, 4),
176 	DIV(DOUT_SPI1, "dout_spi1", "mout_spi1", CLK_DIV2, 4, 4),
177 	DIV(DOUT_AUDIO0, "dout_audio0", "mout_audio0", CLK_DIV2, 8, 4),
178 	DIV(DOUT_AUDIO1, "dout_audio1", "mout_audio1", CLK_DIV2, 12, 4),
179 	DIV(DOUT_UART, "dout_uart", "mout_uart", CLK_DIV2, 16, 4),
180 	DIV(DOUT_IRDA, "dout_irda", "mout_irda", CLK_DIV2, 20, 4),
181 };
182 
183 /* List of clock dividers present on S3C6400. */
184 DIV_CLOCKS(s3c6400_div_clks) __initdata = {
185 	DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 3),
186 };
187 
188 /* List of clock dividers present on S3C6410. */
189 DIV_CLOCKS(s3c6410_div_clks) __initdata = {
190 	DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 4),
191 	DIV(DOUT_FIMC, "dout_fimc", "hclk", CLK_DIV1, 24, 4),
192 	DIV(DOUT_AUDIO2, "dout_audio2", "mout_audio2", CLK_DIV2, 24, 4),
193 };
194 
195 /* List of clock gates present on all S3C64xx SoCs. */
196 GATE_CLOCKS(s3c64xx_gate_clks) __initdata = {
197 	GATE_BUS(HCLK_UHOST, "hclk_uhost", "hclk", HCLK_GATE, 29),
198 	GATE_BUS(HCLK_SECUR, "hclk_secur", "hclk", HCLK_GATE, 28),
199 	GATE_BUS(HCLK_SDMA1, "hclk_sdma1", "hclk", HCLK_GATE, 27),
200 	GATE_BUS(HCLK_SDMA0, "hclk_sdma0", "hclk", HCLK_GATE, 26),
201 	GATE_ON(HCLK_DDR1, "hclk_ddr1", "hclk", HCLK_GATE, 24),
202 	GATE_BUS(HCLK_USB, "hclk_usb", "hclk", HCLK_GATE, 20),
203 	GATE_BUS(HCLK_HSMMC2, "hclk_hsmmc2", "hclk", HCLK_GATE, 19),
204 	GATE_BUS(HCLK_HSMMC1, "hclk_hsmmc1", "hclk", HCLK_GATE, 18),
205 	GATE_BUS(HCLK_HSMMC0, "hclk_hsmmc0", "hclk", HCLK_GATE, 17),
206 	GATE_BUS(HCLK_MDP, "hclk_mdp", "hclk", HCLK_GATE, 16),
207 	GATE_BUS(HCLK_DHOST, "hclk_dhost", "hclk", HCLK_GATE, 15),
208 	GATE_BUS(HCLK_IHOST, "hclk_ihost", "hclk", HCLK_GATE, 14),
209 	GATE_BUS(HCLK_DMA1, "hclk_dma1", "hclk", HCLK_GATE, 13),
210 	GATE_BUS(HCLK_DMA0, "hclk_dma0", "hclk", HCLK_GATE, 12),
211 	GATE_BUS(HCLK_JPEG, "hclk_jpeg", "hclk", HCLK_GATE, 11),
212 	GATE_BUS(HCLK_CAMIF, "hclk_camif", "hclk", HCLK_GATE, 10),
213 	GATE_BUS(HCLK_SCALER, "hclk_scaler", "hclk", HCLK_GATE, 9),
214 	GATE_BUS(HCLK_2D, "hclk_2d", "hclk", HCLK_GATE, 8),
215 	GATE_BUS(HCLK_TV, "hclk_tv", "hclk", HCLK_GATE, 7),
216 	GATE_BUS(HCLK_POST0, "hclk_post0", "hclk", HCLK_GATE, 5),
217 	GATE_BUS(HCLK_ROT, "hclk_rot", "hclk", HCLK_GATE, 4),
218 	GATE_BUS(HCLK_LCD, "hclk_lcd", "hclk", HCLK_GATE, 3),
219 	GATE_BUS(HCLK_TZIC, "hclk_tzic", "hclk", HCLK_GATE, 2),
220 	GATE_ON(HCLK_INTC, "hclk_intc", "hclk", HCLK_GATE, 1),
221 	GATE_ON(PCLK_SKEY, "pclk_skey", "pclk", PCLK_GATE, 24),
222 	GATE_ON(PCLK_CHIPID, "pclk_chipid", "pclk", PCLK_GATE, 23),
223 	GATE_BUS(PCLK_SPI1, "pclk_spi1", "pclk", PCLK_GATE, 22),
224 	GATE_BUS(PCLK_SPI0, "pclk_spi0", "pclk", PCLK_GATE, 21),
225 	GATE_BUS(PCLK_HSIRX, "pclk_hsirx", "pclk", PCLK_GATE, 20),
226 	GATE_BUS(PCLK_HSITX, "pclk_hsitx", "pclk", PCLK_GATE, 19),
227 	GATE_ON(PCLK_GPIO, "pclk_gpio", "pclk", PCLK_GATE, 18),
228 	GATE_BUS(PCLK_IIC0, "pclk_iic0", "pclk", PCLK_GATE, 17),
229 	GATE_BUS(PCLK_IIS1, "pclk_iis1", "pclk", PCLK_GATE, 16),
230 	GATE_BUS(PCLK_IIS0, "pclk_iis0", "pclk", PCLK_GATE, 15),
231 	GATE_BUS(PCLK_AC97, "pclk_ac97", "pclk", PCLK_GATE, 14),
232 	GATE_BUS(PCLK_TZPC, "pclk_tzpc", "pclk", PCLK_GATE, 13),
233 	GATE_BUS(PCLK_TSADC, "pclk_tsadc", "pclk", PCLK_GATE, 12),
234 	GATE_BUS(PCLK_KEYPAD, "pclk_keypad", "pclk", PCLK_GATE, 11),
235 	GATE_BUS(PCLK_IRDA, "pclk_irda", "pclk", PCLK_GATE, 10),
236 	GATE_BUS(PCLK_PCM1, "pclk_pcm1", "pclk", PCLK_GATE, 9),
237 	GATE_BUS(PCLK_PCM0, "pclk_pcm0", "pclk", PCLK_GATE, 8),
238 	GATE_BUS(PCLK_PWM, "pclk_pwm", "pclk", PCLK_GATE, 7),
239 	GATE_BUS(PCLK_RTC, "pclk_rtc", "pclk", PCLK_GATE, 6),
240 	GATE_BUS(PCLK_WDT, "pclk_wdt", "pclk", PCLK_GATE, 5),
241 	GATE_BUS(PCLK_UART3, "pclk_uart3", "pclk", PCLK_GATE, 4),
242 	GATE_BUS(PCLK_UART2, "pclk_uart2", "pclk", PCLK_GATE, 3),
243 	GATE_BUS(PCLK_UART1, "pclk_uart1", "pclk", PCLK_GATE, 2),
244 	GATE_BUS(PCLK_UART0, "pclk_uart0", "pclk", PCLK_GATE, 1),
245 	GATE_BUS(PCLK_MFC, "pclk_mfc", "pclk", PCLK_GATE, 0),
246 	GATE_SCLK(SCLK_UHOST, "sclk_uhost", "dout_uhost", SCLK_GATE, 30),
247 	GATE_SCLK(SCLK_MMC2_48, "sclk_mmc2_48", "clk48m", SCLK_GATE, 29),
248 	GATE_SCLK(SCLK_MMC1_48, "sclk_mmc1_48", "clk48m", SCLK_GATE, 28),
249 	GATE_SCLK(SCLK_MMC0_48, "sclk_mmc0_48", "clk48m", SCLK_GATE, 27),
250 	GATE_SCLK(SCLK_MMC2, "sclk_mmc2", "dout_mmc2", SCLK_GATE, 26),
251 	GATE_SCLK(SCLK_MMC1, "sclk_mmc1", "dout_mmc1", SCLK_GATE, 25),
252 	GATE_SCLK(SCLK_MMC0, "sclk_mmc0", "dout_mmc0", SCLK_GATE, 24),
253 	GATE_SCLK(SCLK_SPI1_48, "sclk_spi1_48", "clk48m", SCLK_GATE, 23),
254 	GATE_SCLK(SCLK_SPI0_48, "sclk_spi0_48", "clk48m", SCLK_GATE, 22),
255 	GATE_SCLK(SCLK_SPI1, "sclk_spi1", "dout_spi1", SCLK_GATE, 21),
256 	GATE_SCLK(SCLK_SPI0, "sclk_spi0", "dout_spi0", SCLK_GATE, 20),
257 	GATE_SCLK(SCLK_DAC27, "sclk_dac27", "mout_dac27", SCLK_GATE, 19),
258 	GATE_SCLK(SCLK_TV27, "sclk_tv27", "mout_tv27", SCLK_GATE, 18),
259 	GATE_SCLK(SCLK_SCALER27, "sclk_scaler27", "clk27m", SCLK_GATE, 17),
260 	GATE_SCLK(SCLK_SCALER, "sclk_scaler", "dout_scaler", SCLK_GATE, 16),
261 	GATE_SCLK(SCLK_LCD27, "sclk_lcd27", "clk27m", SCLK_GATE, 15),
262 	GATE_SCLK(SCLK_LCD, "sclk_lcd", "dout_lcd", SCLK_GATE, 14),
263 	GATE_SCLK(SCLK_POST0_27, "sclk_post0_27", "clk27m", SCLK_GATE, 12),
264 	GATE_SCLK(SCLK_POST0, "sclk_post0", "dout_lcd", SCLK_GATE, 10),
265 	GATE_SCLK(SCLK_AUDIO1, "sclk_audio1", "dout_audio1", SCLK_GATE, 9),
266 	GATE_SCLK(SCLK_AUDIO0, "sclk_audio0", "dout_audio0", SCLK_GATE, 8),
267 	GATE_SCLK(SCLK_SECUR, "sclk_secur", "dout_secur", SCLK_GATE, 7),
268 	GATE_SCLK(SCLK_IRDA, "sclk_irda", "dout_irda", SCLK_GATE, 6),
269 	GATE_SCLK(SCLK_UART, "sclk_uart", "dout_uart", SCLK_GATE, 5),
270 	GATE_SCLK(SCLK_MFC, "sclk_mfc", "dout_mfc", SCLK_GATE, 3),
271 	GATE_SCLK(SCLK_CAM, "sclk_cam", "dout_cam", SCLK_GATE, 2),
272 	GATE_SCLK(SCLK_JPEG, "sclk_jpeg", "dout_jpeg", SCLK_GATE, 1),
273 };
274 
275 /* List of clock gates present on S3C6400. */
276 GATE_CLOCKS(s3c6400_gate_clks) __initdata = {
277 	GATE_ON(HCLK_DDR0, "hclk_ddr0", "hclk", HCLK_GATE, 23),
278 	GATE_SCLK(SCLK_ONENAND, "sclk_onenand", "parent", SCLK_GATE, 4),
279 };
280 
281 /* List of clock gates present on S3C6410. */
282 GATE_CLOCKS(s3c6410_gate_clks) __initdata = {
283 	GATE_BUS(HCLK_3DSE, "hclk_3dse", "hclk", HCLK_GATE, 31),
284 	GATE_ON(HCLK_IROM, "hclk_irom", "hclk", HCLK_GATE, 25),
285 	GATE_ON(HCLK_MEM1, "hclk_mem1", "hclk", HCLK_GATE, 22),
286 	GATE_ON(HCLK_MEM0, "hclk_mem0", "hclk", HCLK_GATE, 21),
287 	GATE_BUS(HCLK_MFC, "hclk_mfc", "hclk", HCLK_GATE, 0),
288 	GATE_BUS(PCLK_IIC1, "pclk_iic1", "pclk", PCLK_GATE, 27),
289 	GATE_BUS(PCLK_IIS2, "pclk_iis2", "pclk", PCLK_GATE, 26),
290 	GATE_SCLK(SCLK_FIMC, "sclk_fimc", "dout_fimc", SCLK_GATE, 13),
291 	GATE_SCLK(SCLK_AUDIO2, "sclk_audio2", "dout_audio2", SCLK_GATE, 11),
292 	GATE_BUS(MEM0_CFCON, "mem0_cfcon", "hclk_mem0", MEM0_GATE, 5),
293 	GATE_BUS(MEM0_ONENAND1, "mem0_onenand1", "hclk_mem0", MEM0_GATE, 4),
294 	GATE_BUS(MEM0_ONENAND0, "mem0_onenand0", "hclk_mem0", MEM0_GATE, 3),
295 	GATE_BUS(MEM0_NFCON, "mem0_nfcon", "hclk_mem0", MEM0_GATE, 2),
296 	GATE_ON(MEM0_SROM, "mem0_srom", "hclk_mem0", MEM0_GATE, 1),
297 };
298 
299 /* List of PLL clocks. */
300 static struct samsung_pll_clock s3c64xx_pll_clks[] __initdata = {
301 	PLL(pll_6552, FOUT_APLL, "fout_apll", "fin_pll",
302 					APLL_LOCK, APLL_CON, NULL),
303 	PLL(pll_6552, FOUT_MPLL, "fout_mpll", "fin_pll",
304 					MPLL_LOCK, MPLL_CON, NULL),
305 	PLL(pll_6553, FOUT_EPLL, "fout_epll", "fin_pll",
306 					EPLL_LOCK, EPLL_CON0, NULL),
307 };
308 
309 /* Aliases for common s3c64xx clocks. */
310 static struct samsung_clock_alias s3c64xx_clock_aliases[] = {
311 	ALIAS(FOUT_APLL, NULL, "fout_apll"),
312 	ALIAS(FOUT_MPLL, NULL, "fout_mpll"),
313 	ALIAS(FOUT_EPLL, NULL, "fout_epll"),
314 	ALIAS(MOUT_EPLL, NULL, "mout_epll"),
315 	ALIAS(DOUT_MPLL, NULL, "dout_mpll"),
316 	ALIAS(HCLKX2, NULL, "hclk2"),
317 	ALIAS(HCLK, NULL, "hclk"),
318 	ALIAS(PCLK, NULL, "pclk"),
319 	ALIAS(PCLK, NULL, "clk_uart_baud2"),
320 	ALIAS(ARMCLK, NULL, "armclk"),
321 	ALIAS(HCLK_UHOST, "s3c2410-ohci", "usb-host"),
322 	ALIAS(HCLK_USB, "s3c-hsotg", "otg"),
323 	ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "hsmmc"),
324 	ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "mmc_busclk.0"),
325 	ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"),
326 	ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
327 	ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
328 	ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
329 	ALIAS(HCLK_DMA1, "dma-pl080s.1", "apb_pclk"),
330 	ALIAS(HCLK_DMA0, "dma-pl080s.0", "apb_pclk"),
331 	ALIAS(HCLK_CAMIF, "s3c-camif", "camif"),
332 	ALIAS(HCLK_LCD, "s3c-fb", "lcd"),
333 	ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi"),
334 	ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi"),
335 	ALIAS(PCLK_IIC0, "s3c2440-i2c.0", "i2c"),
336 	ALIAS(PCLK_IIS1, "samsung-i2s.1", "iis"),
337 	ALIAS(PCLK_IIS0, "samsung-i2s.0", "iis"),
338 	ALIAS(PCLK_AC97, "samsung-ac97", "ac97"),
339 	ALIAS(PCLK_TSADC, "s3c64xx-adc", "adc"),
340 	ALIAS(PCLK_KEYPAD, "samsung-keypad", "keypad"),
341 	ALIAS(PCLK_PCM1, "samsung-pcm.1", "pcm"),
342 	ALIAS(PCLK_PCM0, "samsung-pcm.0", "pcm"),
343 	ALIAS(PCLK_PWM, NULL, "timers"),
344 	ALIAS(PCLK_RTC, "s3c64xx-rtc", "rtc"),
345 	ALIAS(PCLK_WDT, NULL, "watchdog"),
346 	ALIAS(PCLK_UART3, "s3c6400-uart.3", "uart"),
347 	ALIAS(PCLK_UART2, "s3c6400-uart.2", "uart"),
348 	ALIAS(PCLK_UART1, "s3c6400-uart.1", "uart"),
349 	ALIAS(PCLK_UART0, "s3c6400-uart.0", "uart"),
350 	ALIAS(SCLK_UHOST, "s3c2410-ohci", "usb-bus-host"),
351 	ALIAS(SCLK_MMC2, "s3c-sdhci.2", "mmc_busclk.2"),
352 	ALIAS(SCLK_MMC1, "s3c-sdhci.1", "mmc_busclk.2"),
353 	ALIAS(SCLK_MMC0, "s3c-sdhci.0", "mmc_busclk.2"),
354 	ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi_busclk0"),
355 	ALIAS(SCLK_SPI1, "s3c6410-spi.1", "spi_busclk2"),
356 	ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi_busclk0"),
357 	ALIAS(SCLK_SPI0, "s3c6410-spi.0", "spi_busclk2"),
358 	ALIAS(SCLK_AUDIO1, "samsung-pcm.1", "audio-bus"),
359 	ALIAS(SCLK_AUDIO1, "samsung-i2s.1", "audio-bus"),
360 	ALIAS(SCLK_AUDIO0, "samsung-pcm.0", "audio-bus"),
361 	ALIAS(SCLK_AUDIO0, "samsung-i2s.0", "audio-bus"),
362 	ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
363 	ALIAS(SCLK_CAM, "s3c-camif", "camera"),
364 };
365 
366 /* Aliases for s3c6400-specific clocks. */
367 static struct samsung_clock_alias s3c6400_clock_aliases[] = {
368 	/* Nothing to place here yet. */
369 };
370 
371 /* Aliases for s3c6410-specific clocks. */
372 static struct samsung_clock_alias s3c6410_clock_aliases[] = {
373 	ALIAS(PCLK_IIC1, "s3c2440-i2c.1", "i2c"),
374 	ALIAS(PCLK_IIS2, "samsung-i2s.2", "iis"),
375 	ALIAS(SCLK_FIMC, "s3c-camif", "fimc"),
376 	ALIAS(SCLK_AUDIO2, "samsung-i2s.2", "audio-bus"),
377 	ALIAS(MEM0_SROM, NULL, "srom"),
378 };
379 
380 static void __init s3c64xx_clk_register_fixed_ext(
381 				struct samsung_clk_provider *ctx,
382 				unsigned long fin_pll_f,
383 				unsigned long xusbxti_f)
384 {
385 	s3c64xx_fixed_rate_ext_clks[0].fixed_rate = fin_pll_f;
386 	s3c64xx_fixed_rate_ext_clks[1].fixed_rate = xusbxti_f;
387 	samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_ext_clks,
388 				ARRAY_SIZE(s3c64xx_fixed_rate_ext_clks));
389 }
390 
391 /* Register s3c64xx clocks. */
392 void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
393 			     unsigned long xusbxti_f, bool s3c6400,
394 			     void __iomem *base)
395 {
396 	struct samsung_clk_provider *ctx;
397 
398 	reg_base = base;
399 	is_s3c6400 = s3c6400;
400 
401 	if (np) {
402 		reg_base = of_iomap(np, 0);
403 		if (!reg_base)
404 			panic("%s: failed to map registers\n", __func__);
405 	}
406 
407 	ctx = samsung_clk_init(np, reg_base, NR_CLKS);
408 
409 	/* Register external clocks. */
410 	if (!np)
411 		s3c64xx_clk_register_fixed_ext(ctx, xtal_f, xusbxti_f);
412 
413 	/* Register PLLs. */
414 	samsung_clk_register_pll(ctx, s3c64xx_pll_clks,
415 				ARRAY_SIZE(s3c64xx_pll_clks), reg_base);
416 
417 	/* Register common internal clocks. */
418 	samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_clks,
419 					ARRAY_SIZE(s3c64xx_fixed_rate_clks));
420 	samsung_clk_register_mux(ctx, s3c64xx_mux_clks,
421 					ARRAY_SIZE(s3c64xx_mux_clks));
422 	samsung_clk_register_div(ctx, s3c64xx_div_clks,
423 					ARRAY_SIZE(s3c64xx_div_clks));
424 	samsung_clk_register_gate(ctx, s3c64xx_gate_clks,
425 					ARRAY_SIZE(s3c64xx_gate_clks));
426 
427 	/* Register SoC-specific clocks. */
428 	if (is_s3c6400) {
429 		samsung_clk_register_mux(ctx, s3c6400_mux_clks,
430 					ARRAY_SIZE(s3c6400_mux_clks));
431 		samsung_clk_register_div(ctx, s3c6400_div_clks,
432 					ARRAY_SIZE(s3c6400_div_clks));
433 		samsung_clk_register_gate(ctx, s3c6400_gate_clks,
434 					ARRAY_SIZE(s3c6400_gate_clks));
435 		samsung_clk_register_alias(ctx, s3c6400_clock_aliases,
436 					ARRAY_SIZE(s3c6400_clock_aliases));
437 	} else {
438 		samsung_clk_register_mux(ctx, s3c6410_mux_clks,
439 					ARRAY_SIZE(s3c6410_mux_clks));
440 		samsung_clk_register_div(ctx, s3c6410_div_clks,
441 					ARRAY_SIZE(s3c6410_div_clks));
442 		samsung_clk_register_gate(ctx, s3c6410_gate_clks,
443 					ARRAY_SIZE(s3c6410_gate_clks));
444 		samsung_clk_register_alias(ctx, s3c6410_clock_aliases,
445 					ARRAY_SIZE(s3c6410_clock_aliases));
446 	}
447 
448 	samsung_clk_register_alias(ctx, s3c64xx_clock_aliases,
449 					ARRAY_SIZE(s3c64xx_clock_aliases));
450 
451 	samsung_clk_sleep_init(reg_base, s3c64xx_clk_regs,
452 			       ARRAY_SIZE(s3c64xx_clk_regs));
453 	if (!is_s3c6400)
454 		samsung_clk_sleep_init(reg_base, s3c6410_clk_regs,
455 				       ARRAY_SIZE(s3c6410_clk_regs));
456 
457 	samsung_clk_of_add_provider(np, ctx);
458 
459 	pr_info("%s clocks: apll = %lu, mpll = %lu\n"
460 		"\tepll = %lu, arm_clk = %lu\n",
461 		is_s3c6400 ? "S3C6400" : "S3C6410",
462 		_get_rate("fout_apll"),	_get_rate("fout_mpll"),
463 		_get_rate("fout_epll"), _get_rate("armclk"));
464 }
465 
466 static void __init s3c6400_clk_init(struct device_node *np)
467 {
468 	s3c64xx_clk_init(np, 0, 0, true, NULL);
469 }
470 CLK_OF_DECLARE(s3c6400_clk, "samsung,s3c6400-clock", s3c6400_clk_init);
471 
472 static void __init s3c6410_clk_init(struct device_node *np)
473 {
474 	s3c64xx_clk_init(np, 0, 0, false, NULL);
475 }
476 CLK_OF_DECLARE(s3c6410_clk, "samsung,s3c6410-clock", s3c6410_clk_init);
477