1 /*
2  * Copyright (c) 2014 MundoReader S.L.
3  * Author: Heiko Stuebner <heiko@sntech.de>
4  *
5  * Copyright (c) 2015 Rockchip Electronics Co. Ltd.
6  * Author: Xing Zheng <zhengxing@rock-chips.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  */
18 
19 #include <linux/clk-provider.h>
20 #include <linux/of.h>
21 #include <linux/of_address.h>
22 #include <linux/syscore_ops.h>
23 #include <dt-bindings/clock/rk3036-cru.h>
24 #include "clk.h"
25 
26 #define RK3036_GRF_SOC_STATUS0	0x14c
27 
28 enum rk3036_plls {
29 	apll, dpll, gpll,
30 };
31 
32 static struct rockchip_pll_rate_table rk3036_pll_rates[] = {
33 	/* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */
34 	RK3036_PLL_RATE(1608000000, 1, 67, 1, 1, 1, 0),
35 	RK3036_PLL_RATE(1584000000, 1, 66, 1, 1, 1, 0),
36 	RK3036_PLL_RATE(1560000000, 1, 65, 1, 1, 1, 0),
37 	RK3036_PLL_RATE(1536000000, 1, 64, 1, 1, 1, 0),
38 	RK3036_PLL_RATE(1512000000, 1, 63, 1, 1, 1, 0),
39 	RK3036_PLL_RATE(1488000000, 1, 62, 1, 1, 1, 0),
40 	RK3036_PLL_RATE(1464000000, 1, 61, 1, 1, 1, 0),
41 	RK3036_PLL_RATE(1440000000, 1, 60, 1, 1, 1, 0),
42 	RK3036_PLL_RATE(1416000000, 1, 59, 1, 1, 1, 0),
43 	RK3036_PLL_RATE(1392000000, 1, 58, 1, 1, 1, 0),
44 	RK3036_PLL_RATE(1368000000, 1, 57, 1, 1, 1, 0),
45 	RK3036_PLL_RATE(1344000000, 1, 56, 1, 1, 1, 0),
46 	RK3036_PLL_RATE(1320000000, 1, 55, 1, 1, 1, 0),
47 	RK3036_PLL_RATE(1296000000, 1, 54, 1, 1, 1, 0),
48 	RK3036_PLL_RATE(1272000000, 1, 53, 1, 1, 1, 0),
49 	RK3036_PLL_RATE(1248000000, 1, 52, 1, 1, 1, 0),
50 	RK3036_PLL_RATE(1200000000, 1, 50, 1, 1, 1, 0),
51 	RK3036_PLL_RATE(1188000000, 2, 99, 1, 1, 1, 0),
52 	RK3036_PLL_RATE(1104000000, 1, 46, 1, 1, 1, 0),
53 	RK3036_PLL_RATE(1100000000, 12, 550, 1, 1, 1, 0),
54 	RK3036_PLL_RATE(1008000000, 1, 84, 2, 1, 1, 0),
55 	RK3036_PLL_RATE(1000000000, 6, 500, 2, 1, 1, 0),
56 	RK3036_PLL_RATE( 984000000, 1, 82, 2, 1, 1, 0),
57 	RK3036_PLL_RATE( 960000000, 1, 80, 2, 1, 1, 0),
58 	RK3036_PLL_RATE( 936000000, 1, 78, 2, 1, 1, 0),
59 	RK3036_PLL_RATE( 912000000, 1, 76, 2, 1, 1, 0),
60 	RK3036_PLL_RATE( 900000000, 4, 300, 2, 1, 1, 0),
61 	RK3036_PLL_RATE( 888000000, 1, 74, 2, 1, 1, 0),
62 	RK3036_PLL_RATE( 864000000, 1, 72, 2, 1, 1, 0),
63 	RK3036_PLL_RATE( 840000000, 1, 70, 2, 1, 1, 0),
64 	RK3036_PLL_RATE( 816000000, 1, 68, 2, 1, 1, 0),
65 	RK3036_PLL_RATE( 800000000, 6, 400, 2, 1, 1, 0),
66 	RK3036_PLL_RATE( 700000000, 6, 350, 2, 1, 1, 0),
67 	RK3036_PLL_RATE( 696000000, 1, 58, 2, 1, 1, 0),
68 	RK3036_PLL_RATE( 600000000, 1, 75, 3, 1, 1, 0),
69 	RK3036_PLL_RATE( 594000000, 2, 99, 2, 1, 1, 0),
70 	RK3036_PLL_RATE( 504000000, 1, 63, 3, 1, 1, 0),
71 	RK3036_PLL_RATE( 500000000, 6, 250, 2, 1, 1, 0),
72 	RK3036_PLL_RATE( 408000000, 1, 68, 2, 2, 1, 0),
73 	RK3036_PLL_RATE( 312000000, 1, 52, 2, 2, 1, 0),
74 	RK3036_PLL_RATE( 216000000, 1, 72, 4, 2, 1, 0),
75 	RK3036_PLL_RATE(  96000000, 1, 64, 4, 4, 1, 0),
76 	{ /* sentinel */ },
77 };
78 
79 #define RK3036_DIV_CPU_MASK		0x1f
80 #define RK3036_DIV_CPU_SHIFT		8
81 
82 #define RK3036_DIV_PERI_MASK		0xf
83 #define RK3036_DIV_PERI_SHIFT		0
84 #define RK3036_DIV_ACLK_MASK		0x7
85 #define RK3036_DIV_ACLK_SHIFT		4
86 #define RK3036_DIV_HCLK_MASK		0x3
87 #define RK3036_DIV_HCLK_SHIFT		8
88 #define RK3036_DIV_PCLK_MASK		0x7
89 #define RK3036_DIV_PCLK_SHIFT		12
90 
91 #define RK3036_CLKSEL1(_core_periph_div)					\
92 	{									\
93 		.reg = RK2928_CLKSEL_CON(1),					\
94 		.val = HIWORD_UPDATE(_core_periph_div, RK3036_DIV_PERI_MASK,	\
95 				RK3036_DIV_PERI_SHIFT)				\
96 	}
97 
98 #define RK3036_CPUCLK_RATE(_prate, _core_periph_div)			\
99 	{								\
100 		.prate = _prate,					\
101 		.divs = {						\
102 			RK3036_CLKSEL1(_core_periph_div),		\
103 		},							\
104 	}
105 
106 static struct rockchip_cpuclk_rate_table rk3036_cpuclk_rates[] __initdata = {
107 	RK3036_CPUCLK_RATE(816000000, 4),
108 	RK3036_CPUCLK_RATE(600000000, 4),
109 	RK3036_CPUCLK_RATE(312000000, 4),
110 };
111 
112 static const struct rockchip_cpuclk_reg_data rk3036_cpuclk_data = {
113 	.core_reg = RK2928_CLKSEL_CON(0),
114 	.div_core_shift = 0,
115 	.div_core_mask = 0x1f,
116 	.mux_core_alt = 1,
117 	.mux_core_main = 0,
118 	.mux_core_shift = 7,
119 	.mux_core_mask = 0x1,
120 };
121 
122 PNAME(mux_pll_p)		= { "xin24m", "xin24m" };
123 
124 PNAME(mux_armclk_p)		= { "apll", "gpll_armclk" };
125 PNAME(mux_busclk_p)		= { "apll", "dpll_cpu", "gpll_cpu" };
126 PNAME(mux_ddrphy_p)		= { "dpll_ddr", "gpll_ddr" };
127 PNAME(mux_pll_src_3plls_p)	= { "apll", "dpll", "gpll" };
128 PNAME(mux_timer_p)		= { "xin24m", "pclk_peri_src" };
129 
130 PNAME(mux_pll_src_apll_dpll_gpll_usb480m_p)	= { "apll", "dpll", "gpll", "usb480m" };
131 
132 PNAME(mux_mmc_src_p)	= { "apll", "dpll", "gpll", "xin24m" };
133 PNAME(mux_i2s_pre_p)	= { "i2s_src", "i2s_frac", "ext_i2s", "xin12m" };
134 PNAME(mux_i2s_clkout_p)	= { "i2s_pre", "xin12m" };
135 PNAME(mux_spdif_p)	= { "spdif_src", "spdif_frac", "xin12m" };
136 PNAME(mux_uart0_p)	= { "uart0_src", "uart0_frac", "xin24m" };
137 PNAME(mux_uart1_p)	= { "uart1_src", "uart1_frac", "xin24m" };
138 PNAME(mux_uart2_p)	= { "uart2_src", "uart2_frac", "xin24m" };
139 PNAME(mux_mac_p)	= { "mac_pll_src", "rmii_clkin" };
140 PNAME(mux_dclk_p)	= { "dclk_lcdc", "dclk_cru" };
141 
142 static struct rockchip_pll_clock rk3036_pll_clks[] __initdata = {
143 	[apll] = PLL(pll_rk3036, PLL_APLL, "apll", mux_pll_p, 0, RK2928_PLL_CON(0),
144 		     RK2928_MODE_CON, 0, 5, 0, rk3036_pll_rates),
145 	[dpll] = PLL(pll_rk3036, PLL_DPLL, "dpll", mux_pll_p, 0, RK2928_PLL_CON(4),
146 		     RK2928_MODE_CON, 4, 4, 0, NULL),
147 	[gpll] = PLL(pll_rk3036, PLL_GPLL, "gpll", mux_pll_p, 0, RK2928_PLL_CON(12),
148 		     RK2928_MODE_CON, 12, 6, ROCKCHIP_PLL_SYNC_RATE, rk3036_pll_rates),
149 };
150 
151 #define MFLAGS CLK_MUX_HIWORD_MASK
152 #define DFLAGS CLK_DIVIDER_HIWORD_MASK
153 #define GFLAGS (CLK_GATE_HIWORD_MASK | CLK_GATE_SET_TO_DISABLE)
154 
155 static struct rockchip_clk_branch rk3036_uart0_fracmux __initdata =
156 	MUX(SCLK_UART0, "sclk_uart0", mux_uart0_p, CLK_SET_RATE_PARENT,
157 			RK2928_CLKSEL_CON(13), 8, 2, MFLAGS);
158 
159 static struct rockchip_clk_branch rk3036_uart1_fracmux __initdata =
160 	MUX(SCLK_UART1, "sclk_uart1", mux_uart1_p, CLK_SET_RATE_PARENT,
161 			RK2928_CLKSEL_CON(14), 8, 2, MFLAGS);
162 
163 static struct rockchip_clk_branch rk3036_uart2_fracmux __initdata =
164 	MUX(SCLK_UART2, "sclk_uart2", mux_uart2_p, CLK_SET_RATE_PARENT,
165 			RK2928_CLKSEL_CON(15), 8, 2, MFLAGS);
166 
167 static struct rockchip_clk_branch rk3036_i2s_fracmux __initdata =
168 	MUX(0, "i2s_pre", mux_i2s_pre_p, CLK_SET_RATE_PARENT,
169 			RK2928_CLKSEL_CON(3), 8, 2, MFLAGS);
170 
171 static struct rockchip_clk_branch rk3036_spdif_fracmux __initdata =
172 	MUX(SCLK_SPDIF, "sclk_spdif", mux_spdif_p, 0,
173 			RK2928_CLKSEL_CON(5), 8, 2, MFLAGS);
174 
175 static struct rockchip_clk_branch rk3036_clk_branches[] __initdata = {
176 	/*
177 	 * Clock-Architecture Diagram 1
178 	 */
179 
180 	GATE(0, "gpll_armclk", "gpll", CLK_IGNORE_UNUSED,
181 			RK2928_CLKGATE_CON(0), 6, GFLAGS),
182 
183 	FACTOR(0, "xin12m", "xin24m", 0, 1, 2),
184 
185 	/*
186 	 * Clock-Architecture Diagram 2
187 	 */
188 
189 	GATE(0, "dpll_ddr", "dpll", CLK_IGNORE_UNUSED,
190 			RK2928_CLKGATE_CON(0), 2, GFLAGS),
191 	GATE(0, "gpll_ddr", "gpll", CLK_IGNORE_UNUSED,
192 			RK2928_CLKGATE_CON(0), 8, GFLAGS),
193 	COMPOSITE_NOGATE(0, "ddrphy2x", mux_ddrphy_p, CLK_IGNORE_UNUSED,
194 			RK2928_CLKSEL_CON(26), 8, 1, MFLAGS, 0, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
195 	FACTOR(0, "ddrphy", "ddrphy2x", 0, 1, 2),
196 
197 	COMPOSITE_NOMUX(0, "pclk_dbg", "armclk", CLK_IGNORE_UNUSED,
198 			RK2928_CLKSEL_CON(1), 0, 4, DFLAGS | CLK_DIVIDER_READ_ONLY,
199 			RK2928_CLKGATE_CON(0), 7, GFLAGS),
200 	COMPOSITE_NOMUX(0, "aclk_core_pre", "armclk", CLK_IGNORE_UNUSED,
201 			RK2928_CLKSEL_CON(1), 4, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
202 			RK2928_CLKGATE_CON(0), 7, GFLAGS),
203 
204 	GATE(0, "dpll_cpu", "dpll", 0, RK2928_CLKGATE_CON(10), 8, GFLAGS),
205 	GATE(0, "gpll_cpu", "gpll", 0, RK2928_CLKGATE_CON(0), 1, GFLAGS),
206 	COMPOSITE_NOGATE(0, "aclk_cpu_src", mux_busclk_p, 0,
207 			RK2928_CLKSEL_CON(0), 14, 2, MFLAGS, 8, 5, DFLAGS),
208 	GATE(ACLK_CPU, "aclk_cpu", "aclk_cpu_src", CLK_IGNORE_UNUSED,
209 			RK2928_CLKGATE_CON(0), 3, GFLAGS),
210 	COMPOSITE_NOMUX(PCLK_CPU, "pclk_cpu", "aclk_cpu_src", CLK_IGNORE_UNUSED,
211 			RK2928_CLKSEL_CON(1), 12, 3, DFLAGS | CLK_DIVIDER_READ_ONLY,
212 			RK2928_CLKGATE_CON(0), 5, GFLAGS),
213 	COMPOSITE_NOMUX(HCLK_CPU, "hclk_cpu", "aclk_cpu_src", CLK_IGNORE_UNUSED,
214 			RK2928_CLKSEL_CON(1), 8, 2, DFLAGS | CLK_DIVIDER_READ_ONLY,
215 			RK2928_CLKGATE_CON(0), 4, GFLAGS),
216 
217 	COMPOSITE(0, "aclk_peri_src", mux_pll_src_3plls_p, 0,
218 			RK2928_CLKSEL_CON(10), 14, 2, MFLAGS, 0, 5, DFLAGS,
219 			RK2928_CLKGATE_CON(2), 0, GFLAGS),
220 
221 	GATE(ACLK_PERI, "aclk_peri", "aclk_peri_src", 0,
222 			RK2928_CLKGATE_CON(2), 1, GFLAGS),
223 	DIV(0, "pclk_peri_src", "aclk_peri_src", CLK_IGNORE_UNUSED,
224 			RK2928_CLKSEL_CON(10), 12, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
225 	GATE(PCLK_PERI, "pclk_peri", "pclk_peri_src", 0,
226 			RK2928_CLKGATE_CON(2), 3, GFLAGS),
227 	DIV(0, "hclk_peri_src", "aclk_peri_src", CLK_IGNORE_UNUSED,
228 			RK2928_CLKSEL_CON(10), 8, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO),
229 	GATE(HCLK_PERI, "hclk_peri", "hclk_peri_src", 0,
230 			RK2928_CLKGATE_CON(2), 2, GFLAGS),
231 
232 	COMPOSITE_NODIV(SCLK_TIMER0, "sclk_timer0", mux_timer_p, CLK_IGNORE_UNUSED,
233 			RK2928_CLKSEL_CON(2), 4, 1, MFLAGS,
234 			RK2928_CLKGATE_CON(1), 0, GFLAGS),
235 	COMPOSITE_NODIV(SCLK_TIMER1, "sclk_timer1", mux_timer_p, CLK_IGNORE_UNUSED,
236 			RK2928_CLKSEL_CON(2), 5, 1, MFLAGS,
237 			RK2928_CLKGATE_CON(1), 1, GFLAGS),
238 	COMPOSITE_NODIV(SCLK_TIMER2, "sclk_timer2", mux_timer_p, CLK_IGNORE_UNUSED,
239 			RK2928_CLKSEL_CON(2), 6, 1, MFLAGS,
240 			RK2928_CLKGATE_CON(2), 4, GFLAGS),
241 	COMPOSITE_NODIV(SCLK_TIMER3, "sclk_timer3", mux_timer_p, CLK_IGNORE_UNUSED,
242 			RK2928_CLKSEL_CON(2), 7, 1, MFLAGS,
243 			RK2928_CLKGATE_CON(2), 5, GFLAGS),
244 
245 	MUX(0, "uart_pll_clk", mux_pll_src_apll_dpll_gpll_usb480m_p, 0,
246 			RK2928_CLKSEL_CON(13), 10, 2, MFLAGS),
247 	COMPOSITE_NOMUX(0, "uart0_src", "uart_pll_clk", 0,
248 			RK2928_CLKSEL_CON(13), 0, 7, DFLAGS,
249 			RK2928_CLKGATE_CON(1), 8, GFLAGS),
250 	COMPOSITE_NOMUX(0, "uart1_src", "uart_pll_clk", 0,
251 			RK2928_CLKSEL_CON(14), 0, 7, DFLAGS,
252 			RK2928_CLKGATE_CON(1), 10, GFLAGS),
253 	COMPOSITE_NOMUX(0, "uart2_src", "uart_pll_clk", 0,
254 			RK2928_CLKSEL_CON(15), 0, 7, DFLAGS,
255 			RK2928_CLKGATE_CON(1), 12, GFLAGS),
256 	COMPOSITE_FRACMUX(0, "uart0_frac", "uart0_src", CLK_SET_RATE_PARENT,
257 			RK2928_CLKSEL_CON(17), 0,
258 			RK2928_CLKGATE_CON(1), 9, GFLAGS,
259 			&rk3036_uart0_fracmux),
260 	COMPOSITE_FRACMUX(0, "uart1_frac", "uart1_src", CLK_SET_RATE_PARENT,
261 			RK2928_CLKSEL_CON(18), 0,
262 			RK2928_CLKGATE_CON(1), 11, GFLAGS,
263 			&rk3036_uart1_fracmux),
264 	COMPOSITE_FRACMUX(0, "uart2_frac", "uart2_src", CLK_SET_RATE_PARENT,
265 			RK2928_CLKSEL_CON(19), 0,
266 			RK2928_CLKGATE_CON(1), 13, GFLAGS,
267 			&rk3036_uart2_fracmux),
268 
269 	COMPOSITE(0, "aclk_vcodec", mux_pll_src_3plls_p, 0,
270 			RK2928_CLKSEL_CON(32), 14, 2, MFLAGS, 8, 5, DFLAGS,
271 			RK2928_CLKGATE_CON(3), 11, GFLAGS),
272 	FACTOR_GATE(HCLK_VCODEC, "hclk_vcodec", "aclk_vcodec", 0, 1, 4,
273 			RK2928_CLKGATE_CON(3), 12, GFLAGS),
274 
275 	COMPOSITE(0, "aclk_hvec", mux_pll_src_3plls_p, 0,
276 			RK2928_CLKSEL_CON(20), 0, 2, MFLAGS, 2, 5, DFLAGS,
277 			RK2928_CLKGATE_CON(10), 6, GFLAGS),
278 
279 	COMPOSITE(0, "aclk_disp1_pre", mux_pll_src_3plls_p, 0,
280 			RK2928_CLKSEL_CON(31), 14, 2, MFLAGS, 8, 5, DFLAGS,
281 			RK2928_CLKGATE_CON(1), 4, GFLAGS),
282 	COMPOSITE(0, "hclk_disp_pre", mux_pll_src_3plls_p, 0,
283 			RK2928_CLKSEL_CON(30), 14, 2, MFLAGS, 8, 5, DFLAGS,
284 			RK2928_CLKGATE_CON(0), 11, GFLAGS),
285 	COMPOSITE(SCLK_LCDC, "dclk_lcdc", mux_pll_src_3plls_p, 0,
286 			RK2928_CLKSEL_CON(28), 0, 2, MFLAGS, 8, 8, DFLAGS,
287 			RK2928_CLKGATE_CON(3), 2, GFLAGS),
288 
289 	COMPOSITE_NODIV(0, "sclk_sdmmc_src", mux_mmc_src_p, 0,
290 			RK2928_CLKSEL_CON(12), 8, 2, MFLAGS,
291 			RK2928_CLKGATE_CON(2), 11, GFLAGS),
292 	DIV(SCLK_SDMMC, "sclk_sdmmc", "sclk_sdmmc_src", 0,
293 			RK2928_CLKSEL_CON(11), 0, 7, DFLAGS),
294 
295 	COMPOSITE_NODIV(0, "sclk_sdio_src", mux_mmc_src_p, 0,
296 			RK2928_CLKSEL_CON(12), 10, 2, MFLAGS,
297 			RK2928_CLKGATE_CON(2), 13, GFLAGS),
298 	DIV(SCLK_SDIO, "sclk_sdio", "sclk_sdio_src", 0,
299 			RK2928_CLKSEL_CON(11), 8, 7, DFLAGS),
300 
301 	COMPOSITE(SCLK_EMMC, "sclk_emmc", mux_mmc_src_p, 0,
302 			RK2928_CLKSEL_CON(12), 12, 2, MFLAGS, 0, 7, DFLAGS,
303 			RK2928_CLKGATE_CON(2), 14, GFLAGS),
304 
305 	MMC(SCLK_SDMMC_DRV,    "sdmmc_drv",    "sclk_sdmmc", RK3036_SDMMC_CON0, 1),
306 	MMC(SCLK_SDMMC_SAMPLE, "sdmmc_sample", "sclk_sdmmc", RK3036_SDMMC_CON1, 0),
307 
308 	MMC(SCLK_SDIO_DRV,     "sdio_drv",     "sclk_sdio",  RK3036_SDIO_CON0, 1),
309 	MMC(SCLK_SDIO_SAMPLE,  "sdio_sample",  "sclk_sdio",  RK3036_SDIO_CON1, 0),
310 
311 	MMC(SCLK_EMMC_DRV,     "emmc_drv",     "sclk_emmc",  RK3036_EMMC_CON0,  1),
312 	MMC(SCLK_EMMC_SAMPLE,  "emmc_sample",  "sclk_emmc",  RK3036_EMMC_CON1,  0),
313 
314 	COMPOSITE(0, "i2s_src", mux_pll_src_3plls_p, 0,
315 			RK2928_CLKSEL_CON(3), 14, 2, MFLAGS, 0, 7, DFLAGS,
316 			RK2928_CLKGATE_CON(0), 9, GFLAGS),
317 	COMPOSITE_FRACMUX(0, "i2s_frac", "i2s_src", CLK_SET_RATE_PARENT,
318 			RK2928_CLKSEL_CON(7), 0,
319 			RK2928_CLKGATE_CON(0), 10, GFLAGS,
320 			&rk3036_i2s_fracmux),
321 	COMPOSITE_NODIV(SCLK_I2S_OUT, "i2s_clkout", mux_i2s_clkout_p, 0,
322 			RK2928_CLKSEL_CON(3), 12, 1, MFLAGS,
323 			RK2928_CLKGATE_CON(0), 13, GFLAGS),
324 	GATE(SCLK_I2S, "sclk_i2s", "i2s_pre", CLK_SET_RATE_PARENT,
325 			RK2928_CLKGATE_CON(0), 14, GFLAGS),
326 
327 	COMPOSITE(0, "spdif_src", mux_pll_src_3plls_p, 0,
328 			RK2928_CLKSEL_CON(5), 10, 2, MFLAGS, 0, 7, DFLAGS,
329 			RK2928_CLKGATE_CON(2), 10, GFLAGS),
330 	COMPOSITE_FRACMUX(0, "spdif_frac", "spdif_src", 0,
331 			RK2928_CLKSEL_CON(9), 0,
332 			RK2928_CLKGATE_CON(2), 12, GFLAGS,
333 			&rk3036_spdif_fracmux),
334 
335 	GATE(SCLK_OTGPHY0, "sclk_otgphy0", "xin12m", CLK_IGNORE_UNUSED,
336 			RK2928_CLKGATE_CON(1), 5, GFLAGS),
337 
338 	COMPOSITE(SCLK_GPU, "sclk_gpu", mux_pll_src_3plls_p, 0,
339 			RK2928_CLKSEL_CON(34), 8, 2, MFLAGS, 0, 5, DFLAGS,
340 			RK2928_CLKGATE_CON(3), 13, GFLAGS),
341 
342 	COMPOSITE(SCLK_SPI, "sclk_spi", mux_pll_src_3plls_p, 0,
343 			RK2928_CLKSEL_CON(25), 8, 2, MFLAGS, 0, 7, DFLAGS,
344 			RK2928_CLKGATE_CON(2), 9, GFLAGS),
345 
346 	COMPOSITE(SCLK_NANDC, "sclk_nandc", mux_pll_src_3plls_p, 0,
347 			RK2928_CLKSEL_CON(16), 8, 2, MFLAGS, 10, 5, DFLAGS,
348 			RK2928_CLKGATE_CON(10), 4, GFLAGS),
349 
350 	COMPOSITE(SCLK_SFC, "sclk_sfc", mux_pll_src_apll_dpll_gpll_usb480m_p, 0,
351 			RK2928_CLKSEL_CON(16), 0, 2, MFLAGS, 2, 5, DFLAGS,
352 			RK2928_CLKGATE_CON(10), 5, GFLAGS),
353 
354 	COMPOSITE_NOGATE(SCLK_MACPLL, "mac_pll_src", mux_pll_src_3plls_p, CLK_SET_RATE_NO_REPARENT,
355 			RK2928_CLKSEL_CON(21), 0, 2, MFLAGS, 9, 5, DFLAGS),
356 	MUX(SCLK_MACREF, "mac_clk_ref", mux_mac_p, CLK_SET_RATE_PARENT,
357 			RK2928_CLKSEL_CON(21), 3, 1, MFLAGS),
358 
359 	COMPOSITE_NOMUX(SCLK_MAC, "mac_clk", "mac_clk_ref", 0,
360 			RK2928_CLKSEL_CON(21), 4, 5, DFLAGS,
361 			RK2928_CLKGATE_CON(2), 6, GFLAGS),
362 	FACTOR(0, "sclk_macref_out", "hclk_peri_src", 0, 1, 2),
363 
364 	MUX(SCLK_HDMI, "dclk_hdmi", mux_dclk_p, 0,
365 			RK2928_CLKSEL_CON(31), 0, 1, MFLAGS),
366 
367 	/*
368 	 * Clock-Architecture Diagram 3
369 	 */
370 
371 	/* aclk_cpu gates */
372 	GATE(0, "sclk_intmem", "aclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 12, GFLAGS),
373 	GATE(0, "aclk_strc_sys", "aclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 10, GFLAGS),
374 
375 	/* hclk_cpu gates */
376 	GATE(HCLK_ROM, "hclk_rom", "hclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 6, GFLAGS),
377 
378 	/* pclk_cpu gates */
379 	GATE(PCLK_GRF, "pclk_grf", "pclk_cpu", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 4, GFLAGS),
380 	GATE(PCLK_DDRUPCTL, "pclk_ddrupctl", "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 7, GFLAGS),
381 	GATE(PCLK_ACODEC, "pclk_acodec", "pclk_cpu", 0, RK2928_CLKGATE_CON(5), 14, GFLAGS),
382 	GATE(PCLK_HDMI, "pclk_hdmi", "pclk_cpu", 0, RK2928_CLKGATE_CON(3), 8, GFLAGS),
383 
384 	/* aclk_vio gates */
385 	GATE(ACLK_VIO, "aclk_vio", "aclk_disp1_pre", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(6), 13, GFLAGS),
386 	GATE(ACLK_LCDC, "aclk_lcdc", "aclk_disp1_pre", 0, RK2928_CLKGATE_CON(9), 6, GFLAGS),
387 
388 	GATE(HCLK_VIO_BUS, "hclk_vio_bus", "hclk_disp_pre", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(6), 12, GFLAGS),
389 	GATE(HCLK_LCDC, "hclk_lcdc", "hclk_disp_pre", 0, RK2928_CLKGATE_CON(9), 5, GFLAGS),
390 
391 
392 	/* xin24m gates */
393 	GATE(SCLK_PVTM_CORE, "sclk_pvtm_core", "xin24m", 0, RK2928_CLKGATE_CON(10), 0, GFLAGS),
394 	GATE(SCLK_PVTM_GPU, "sclk_pvtm_gpu", "xin24m", 0, RK2928_CLKGATE_CON(10), 1, GFLAGS),
395 
396 	/* aclk_peri gates */
397 	GATE(0, "aclk_peri_axi_matrix", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 3, GFLAGS),
398 	GATE(0, "aclk_cpu_peri", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 2, GFLAGS),
399 	GATE(ACLK_DMAC2, "aclk_dmac2", "aclk_peri", 0, RK2928_CLKGATE_CON(5), 1, GFLAGS),
400 	GATE(0, "aclk_peri_niu", "aclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9), 15, GFLAGS),
401 
402 	/* hclk_peri gates */
403 	GATE(0, "hclk_peri_matrix", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 0, GFLAGS),
404 	GATE(0, "hclk_usb_peri", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9), 13, GFLAGS),
405 	GATE(0, "hclk_peri_arbi", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(9), 14, GFLAGS),
406 	GATE(HCLK_NANDC, "hclk_nandc", "hclk_peri", 0, RK2928_CLKGATE_CON(5), 9, GFLAGS),
407 	GATE(HCLK_SDMMC, "hclk_sdmmc", "hclk_peri", 0, RK2928_CLKGATE_CON(5), 10, GFLAGS),
408 	GATE(HCLK_SDIO, "hclk_sdio", "hclk_peri", 0, RK2928_CLKGATE_CON(5), 11, GFLAGS),
409 	GATE(HCLK_EMMC, "hclk_emmc", "hclk_peri", 0, RK2928_CLKGATE_CON(7), 0, GFLAGS),
410 	GATE(HCLK_OTG0, "hclk_otg0", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 13, GFLAGS),
411 	GATE(HCLK_OTG1, "hclk_otg1", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(7), 3, GFLAGS),
412 	GATE(HCLK_I2S, "hclk_i2s", "hclk_peri", 0, RK2928_CLKGATE_CON(7), 2, GFLAGS),
413 	GATE(0, "hclk_sfc", "hclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(3), 14, GFLAGS),
414 	GATE(HCLK_MAC, "hclk_mac", "hclk_peri", 0, RK2928_CLKGATE_CON(3), 5, GFLAGS),
415 
416 	/* pclk_peri gates */
417 	GATE(0, "pclk_peri_matrix", "pclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(4), 1, GFLAGS),
418 	GATE(0, "pclk_efuse", "pclk_peri", CLK_IGNORE_UNUSED, RK2928_CLKGATE_CON(5), 2, GFLAGS),
419 	GATE(PCLK_TIMER, "pclk_timer", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 7, GFLAGS),
420 	GATE(PCLK_PWM, "pclk_pwm", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 10, GFLAGS),
421 	GATE(PCLK_SPI, "pclk_spi", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 12, GFLAGS),
422 	GATE(PCLK_WDT, "pclk_wdt", "pclk_peri", 0, RK2928_CLKGATE_CON(7), 15, GFLAGS),
423 	GATE(PCLK_UART0, "pclk_uart0", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 0, GFLAGS),
424 	GATE(PCLK_UART1, "pclk_uart1", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 1, GFLAGS),
425 	GATE(PCLK_UART2, "pclk_uart2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 2, GFLAGS),
426 	GATE(PCLK_I2C0, "pclk_i2c0", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 4, GFLAGS),
427 	GATE(PCLK_I2C1, "pclk_i2c1", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 5, GFLAGS),
428 	GATE(PCLK_I2C2, "pclk_i2c2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 6, GFLAGS),
429 	GATE(PCLK_GPIO0, "pclk_gpio0", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 9, GFLAGS),
430 	GATE(PCLK_GPIO1, "pclk_gpio1", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 10, GFLAGS),
431 	GATE(PCLK_GPIO2, "pclk_gpio2", "pclk_peri", 0, RK2928_CLKGATE_CON(8), 11, GFLAGS),
432 };
433 
434 static const char *const rk3036_critical_clocks[] __initconst = {
435 	"aclk_cpu",
436 	"aclk_peri",
437 	"hclk_peri",
438 	"pclk_peri",
439 };
440 
441 static void __init rk3036_clk_init(struct device_node *np)
442 {
443 	struct rockchip_clk_provider *ctx;
444 	void __iomem *reg_base;
445 	struct clk *clk;
446 
447 	reg_base = of_iomap(np, 0);
448 	if (!reg_base) {
449 		pr_err("%s: could not map cru region\n", __func__);
450 		return;
451 	}
452 
453 	/*
454 	 * Make uart_pll_clk a child of the gpll, as all other sources are
455 	 * not that usable / stable.
456 	 */
457 	writel_relaxed(HIWORD_UPDATE(0x2, 0x3, 10),
458 		       reg_base + RK2928_CLKSEL_CON(13));
459 
460 	ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
461 	if (IS_ERR(ctx)) {
462 		pr_err("%s: rockchip clk init failed\n", __func__);
463 		iounmap(reg_base);
464 		return;
465 	}
466 
467 	clk = clk_register_fixed_factor(NULL, "usb480m", "xin24m", 0, 20, 1);
468 	if (IS_ERR(clk))
469 		pr_warn("%s: could not register clock usb480m: %ld\n",
470 			__func__, PTR_ERR(clk));
471 
472 	rockchip_clk_register_plls(ctx, rk3036_pll_clks,
473 				   ARRAY_SIZE(rk3036_pll_clks),
474 				   RK3036_GRF_SOC_STATUS0);
475 	rockchip_clk_register_branches(ctx, rk3036_clk_branches,
476 				  ARRAY_SIZE(rk3036_clk_branches));
477 	rockchip_clk_protect_critical(rk3036_critical_clocks,
478 				      ARRAY_SIZE(rk3036_critical_clocks));
479 
480 	rockchip_clk_register_armclk(ctx, ARMCLK, "armclk",
481 			mux_armclk_p, ARRAY_SIZE(mux_armclk_p),
482 			&rk3036_cpuclk_data, rk3036_cpuclk_rates,
483 			ARRAY_SIZE(rk3036_cpuclk_rates));
484 
485 	rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0),
486 				  ROCKCHIP_SOFTRST_HIWORD_MASK);
487 
488 	rockchip_register_restart_notifier(ctx, RK2928_GLB_SRST_FST, NULL);
489 
490 	rockchip_clk_of_add_provider(np, ctx);
491 }
492 CLK_OF_DECLARE(rk3036_cru, "rockchip,rk3036-cru", rk3036_clk_init);
493