xref: /openbmc/linux/drivers/clk/renesas/r9a09g011-cpg.c (revision c900529f3d9161bfde5cca0754f83b4d3c3e0220)
1  // SPDX-License-Identifier: GPL-2.0
2  /*
3   * RZ/V2M Clock Pulse Generator / Module Standby and Software Reset
4   *
5   * Copyright (C) 2022 Renesas Electronics Corp.
6   *
7   * Based on r9a07g044-cpg.c
8   */
9  
10  #include <linux/clk-provider.h>
11  #include <linux/device.h>
12  #include <linux/init.h>
13  #include <linux/kernel.h>
14  
15  #include <dt-bindings/clock/r9a09g011-cpg.h>
16  
17  #include "rzg2l-cpg.h"
18  
19  #define RZV2M_SAMPLL4_CLK1	0x104
20  #define RZV2M_SAMPLL4_CLK2	0x108
21  
22  #define PLL4_CONF	(RZV2M_SAMPLL4_CLK1 << 22 | RZV2M_SAMPLL4_CLK2 << 12)
23  
24  #define DIV_A		DDIV_PACK(0x200, 0, 3)
25  #define DIV_B		DDIV_PACK(0x204, 0, 2)
26  #define DIV_D		DDIV_PACK(0x204, 4, 2)
27  #define DIV_E		DDIV_PACK(0x204, 8, 1)
28  #define DIV_W		DDIV_PACK(0x328, 0, 3)
29  
30  #define SEL_B		SEL_PLL_PACK(0x214, 0, 1)
31  #define SEL_CSI0	SEL_PLL_PACK(0x330, 0, 1)
32  #define SEL_CSI4	SEL_PLL_PACK(0x330, 4, 1)
33  #define SEL_D		SEL_PLL_PACK(0x214, 1, 1)
34  #define SEL_E		SEL_PLL_PACK(0x214, 2, 1)
35  #define SEL_SDI		SEL_PLL_PACK(0x300, 0, 1)
36  #define SEL_W0		SEL_PLL_PACK(0x32C, 0, 1)
37  
38  enum clk_ids {
39  	/* Core Clock Outputs exported to DT */
40  	LAST_DT_CORE_CLK = 0,
41  
42  	/* External Input Clocks */
43  	CLK_EXTAL,
44  
45  	/* Internal Core Clocks */
46  	CLK_MAIN,
47  	CLK_MAIN_24,
48  	CLK_MAIN_2,
49  	CLK_PLL1,
50  	CLK_PLL2,
51  	CLK_PLL2_800,
52  	CLK_PLL2_400,
53  	CLK_PLL2_200,
54  	CLK_PLL2_100,
55  	CLK_PLL4,
56  	CLK_DIV_A,
57  	CLK_DIV_B,
58  	CLK_DIV_D,
59  	CLK_DIV_E,
60  	CLK_DIV_W,
61  	CLK_SEL_B,
62  	CLK_SEL_B_D2,
63  	CLK_SEL_CSI0,
64  	CLK_SEL_CSI4,
65  	CLK_SEL_D,
66  	CLK_SEL_E,
67  	CLK_SEL_SDI,
68  	CLK_SEL_W0,
69  
70  	/* Module Clocks */
71  	MOD_CLK_BASE
72  };
73  
74  /* Divider tables */
75  static const struct clk_div_table dtable_diva[] = {
76  	{0, 1},
77  	{1, 2},
78  	{2, 3},
79  	{3, 4},
80  	{4, 6},
81  	{5, 12},
82  	{6, 24},
83  	{0, 0},
84  };
85  
86  static const struct clk_div_table dtable_divb[] = {
87  	{0, 1},
88  	{1, 2},
89  	{2, 4},
90  	{3, 8},
91  	{0, 0},
92  };
93  
94  static const struct clk_div_table dtable_divd[] = {
95  	{0, 1},
96  	{1, 2},
97  	{2, 4},
98  	{0, 0},
99  };
100  
101  
102  static const struct clk_div_table dtable_divw[] = {
103  	{0, 6},
104  	{1, 7},
105  	{2, 8},
106  	{3, 9},
107  	{4, 10},
108  	{5, 11},
109  	{6, 12},
110  	{0, 0},
111  };
112  
113  /* Mux clock tables */
114  static const char * const sel_b[] = { ".main", ".divb" };
115  static const char * const sel_csi[] = { ".main_24", ".main" };
116  static const char * const sel_d[] = { ".main", ".divd" };
117  static const char * const sel_e[] = { ".main", ".dive" };
118  static const char * const sel_w[] = { ".main", ".divw" };
119  static const char * const sel_sdi[] = { ".main", ".pll2_200" };
120  
121  static const struct cpg_core_clk r9a09g011_core_clks[] __initconst = {
122  	/* External Clock Inputs */
123  	DEF_INPUT("extal",	CLK_EXTAL),
124  
125  	/* Internal Core Clocks */
126  	DEF_FIXED(".main",	CLK_MAIN,	CLK_EXTAL,	1,	1),
127  	DEF_FIXED(".main_24",	CLK_MAIN_24,	CLK_MAIN,	1,	2),
128  	DEF_FIXED(".main_2",	CLK_MAIN_2,	CLK_MAIN,	1,	24),
129  	DEF_FIXED(".pll1",	CLK_PLL1,	CLK_MAIN_2,	498,	1),
130  	DEF_FIXED(".pll2",	CLK_PLL2,	CLK_MAIN_2,	800,	1),
131  	DEF_FIXED(".pll2_800",	CLK_PLL2_800,	CLK_PLL2,	1,	2),
132  	DEF_FIXED(".pll2_400",	CLK_PLL2_400,	CLK_PLL2_800,	1,	2),
133  	DEF_FIXED(".pll2_200",	CLK_PLL2_200,	CLK_PLL2_800,	1,	4),
134  	DEF_FIXED(".pll2_100",	CLK_PLL2_100,	CLK_PLL2_800,	1,	8),
135  	DEF_SAMPLL(".pll4",	CLK_PLL4,	CLK_MAIN_2,	PLL4_CONF),
136  
137  	DEF_DIV_RO(".diva",	CLK_DIV_A,	CLK_PLL1,	DIV_A,	dtable_diva),
138  	DEF_DIV_RO(".divb",	CLK_DIV_B,	CLK_PLL2_400,	DIV_B,	dtable_divb),
139  	DEF_DIV_RO(".divd",	CLK_DIV_D,	CLK_PLL2_200,	DIV_D,	dtable_divd),
140  	DEF_DIV_RO(".dive",	CLK_DIV_E,	CLK_PLL2_100,	DIV_E,	NULL),
141  	DEF_DIV_RO(".divw",	CLK_DIV_W,	CLK_PLL4,	DIV_W,	dtable_divw),
142  
143  	DEF_MUX_RO(".selb",	CLK_SEL_B,	SEL_B,		sel_b),
144  	DEF_MUX_RO(".seld",	CLK_SEL_D,	SEL_D,		sel_d),
145  	DEF_MUX_RO(".sele",	CLK_SEL_E,	SEL_E,		sel_e),
146  	DEF_MUX(".selsdi",	CLK_SEL_SDI,	SEL_SDI,	sel_sdi),
147  	DEF_MUX(".selcsi0",	CLK_SEL_CSI0,	SEL_CSI0,	sel_csi),
148  	DEF_MUX(".selcsi4",	CLK_SEL_CSI4,	SEL_CSI4,	sel_csi),
149  	DEF_MUX(".selw0",	CLK_SEL_W0,	SEL_W0,		sel_w),
150  
151  	DEF_FIXED(".selb_d2",	CLK_SEL_B_D2,	CLK_SEL_B,	1,	2),
152  };
153  
154  static const struct rzg2l_mod_clk r9a09g011_mod_clks[] __initconst = {
155  	DEF_MOD("pfc",		R9A09G011_PFC_PCLK,	 CLK_MAIN,     0x400, 2),
156  	DEF_MOD("gic",		R9A09G011_GIC_CLK,	 CLK_SEL_B_D2, 0x400, 5),
157  	DEF_MOD("sdi0_aclk",	R9A09G011_SDI0_ACLK,	 CLK_SEL_D,    0x408, 0),
158  	DEF_MOD("sdi0_imclk",	R9A09G011_SDI0_IMCLK,	 CLK_SEL_SDI,  0x408, 1),
159  	DEF_MOD("sdi0_imclk2",	R9A09G011_SDI0_IMCLK2,	 CLK_SEL_SDI,  0x408, 2),
160  	DEF_MOD("sdi0_clk_hs",	R9A09G011_SDI0_CLK_HS,	 CLK_PLL2_800, 0x408, 3),
161  	DEF_MOD("sdi1_aclk",	R9A09G011_SDI1_ACLK,	 CLK_SEL_D,    0x408, 4),
162  	DEF_MOD("sdi1_imclk",	R9A09G011_SDI1_IMCLK,	 CLK_SEL_SDI,  0x408, 5),
163  	DEF_MOD("sdi1_imclk2",	R9A09G011_SDI1_IMCLK2,	 CLK_SEL_SDI,  0x408, 6),
164  	DEF_MOD("sdi1_clk_hs",	R9A09G011_SDI1_CLK_HS,	 CLK_PLL2_800, 0x408, 7),
165  	DEF_MOD("emm_aclk",	R9A09G011_EMM_ACLK,	 CLK_SEL_D,    0x408, 8),
166  	DEF_MOD("emm_imclk",	R9A09G011_EMM_IMCLK,	 CLK_SEL_SDI,  0x408, 9),
167  	DEF_MOD("emm_imclk2",	R9A09G011_EMM_IMCLK2,	 CLK_SEL_SDI,  0x408, 10),
168  	DEF_MOD("emm_clk_hs",	R9A09G011_EMM_CLK_HS,	 CLK_PLL2_800, 0x408, 11),
169  	DEF_COUPLED("eth_axi",	R9A09G011_ETH0_CLK_AXI,	 CLK_PLL2_200, 0x40c, 8),
170  	DEF_COUPLED("eth_chi",	R9A09G011_ETH0_CLK_CHI,	 CLK_PLL2_100, 0x40c, 8),
171  	DEF_MOD("eth_clk_gptp",	R9A09G011_ETH0_GPTP_EXT, CLK_PLL2_100, 0x40c, 9),
172  	DEF_MOD("usb_aclk_h",	R9A09G011_USB_ACLK_H,	 CLK_SEL_D,    0x40c, 4),
173  	DEF_MOD("usb_aclk_p",	R9A09G011_USB_ACLK_P,	 CLK_SEL_D,    0x40c, 5),
174  	DEF_MOD("usb_pclk",	R9A09G011_USB_PCLK,	 CLK_SEL_E,    0x40c, 6),
175  	DEF_MOD("syc_cnt_clk",	R9A09G011_SYC_CNT_CLK,	 CLK_MAIN_24,  0x41c, 12),
176  	DEF_MOD("iic_pclk0",	R9A09G011_IIC_PCLK0,	 CLK_SEL_E,    0x420, 12),
177  	DEF_MOD("cperi_grpb",	R9A09G011_CPERI_GRPB_PCLK, CLK_SEL_E,  0x424, 0),
178  	DEF_MOD("tim_clk_8",	R9A09G011_TIM8_CLK,	 CLK_MAIN_2,   0x424, 4),
179  	DEF_MOD("tim_clk_9",	R9A09G011_TIM9_CLK,	 CLK_MAIN_2,   0x424, 5),
180  	DEF_MOD("tim_clk_10",	R9A09G011_TIM10_CLK,	 CLK_MAIN_2,   0x424, 6),
181  	DEF_MOD("tim_clk_11",	R9A09G011_TIM11_CLK,	 CLK_MAIN_2,   0x424, 7),
182  	DEF_MOD("tim_clk_12",	R9A09G011_TIM12_CLK,	 CLK_MAIN_2,   0x424, 8),
183  	DEF_MOD("tim_clk_13",	R9A09G011_TIM13_CLK,	 CLK_MAIN_2,   0x424, 9),
184  	DEF_MOD("tim_clk_14",	R9A09G011_TIM14_CLK,	 CLK_MAIN_2,   0x424, 10),
185  	DEF_MOD("tim_clk_15",	R9A09G011_TIM15_CLK,	 CLK_MAIN_2,   0x424, 11),
186  	DEF_MOD("iic_pclk1",	R9A09G011_IIC_PCLK1,	 CLK_SEL_E,    0x424, 12),
187  	DEF_MOD("cperi_grpc",	R9A09G011_CPERI_GRPC_PCLK, CLK_SEL_E,  0x428, 0),
188  	DEF_MOD("tim_clk_16",	R9A09G011_TIM16_CLK,	 CLK_MAIN_2,   0x428, 4),
189  	DEF_MOD("tim_clk_17",	R9A09G011_TIM17_CLK,	 CLK_MAIN_2,   0x428, 5),
190  	DEF_MOD("tim_clk_18",	R9A09G011_TIM18_CLK,	 CLK_MAIN_2,   0x428, 6),
191  	DEF_MOD("tim_clk_19",	R9A09G011_TIM19_CLK,	 CLK_MAIN_2,   0x428, 7),
192  	DEF_MOD("tim_clk_20",	R9A09G011_TIM20_CLK,	 CLK_MAIN_2,   0x428, 8),
193  	DEF_MOD("tim_clk_21",	R9A09G011_TIM21_CLK,	 CLK_MAIN_2,   0x428, 9),
194  	DEF_MOD("tim_clk_22",	R9A09G011_TIM22_CLK,	 CLK_MAIN_2,   0x428, 10),
195  	DEF_MOD("tim_clk_23",	R9A09G011_TIM23_CLK,	 CLK_MAIN_2,   0x428, 11),
196  	DEF_MOD("wdt0_pclk",	R9A09G011_WDT0_PCLK,	 CLK_SEL_E,    0x428, 12),
197  	DEF_MOD("wdt0_clk",	R9A09G011_WDT0_CLK,	 CLK_MAIN,     0x428, 13),
198  	DEF_MOD("cperi_grpf",	R9A09G011_CPERI_GRPF_PCLK, CLK_SEL_E,  0x434, 0),
199  	DEF_MOD("pwm8_clk",	R9A09G011_PWM8_CLK,	 CLK_MAIN,     0x434, 4),
200  	DEF_MOD("pwm9_clk",	R9A09G011_PWM9_CLK,	 CLK_MAIN,     0x434, 5),
201  	DEF_MOD("pwm10_clk",	R9A09G011_PWM10_CLK,	 CLK_MAIN,     0x434, 6),
202  	DEF_MOD("pwm11_clk",	R9A09G011_PWM11_CLK,	 CLK_MAIN,     0x434, 7),
203  	DEF_MOD("pwm12_clk",	R9A09G011_PWM12_CLK,	 CLK_MAIN,     0x434, 8),
204  	DEF_MOD("pwm13_clk",	R9A09G011_PWM13_CLK,	 CLK_MAIN,     0x434, 9),
205  	DEF_MOD("pwm14_clk",	R9A09G011_PWM14_CLK,	 CLK_MAIN,     0x434, 10),
206  	DEF_MOD("cperi_grpg",	R9A09G011_CPERI_GRPG_PCLK, CLK_SEL_E,  0x438, 0),
207  	DEF_MOD("cperi_grph",	R9A09G011_CPERI_GRPH_PCLK, CLK_SEL_E,  0x438, 1),
208  	DEF_MOD("urt_pclk",	R9A09G011_URT_PCLK,	 CLK_SEL_E,    0x438, 4),
209  	DEF_MOD("urt0_clk",	R9A09G011_URT0_CLK,	 CLK_SEL_W0,   0x438, 5),
210  	DEF_MOD("csi0_clk",	R9A09G011_CSI0_CLK,	 CLK_SEL_CSI0, 0x438, 8),
211  	DEF_MOD("csi4_clk",	R9A09G011_CSI4_CLK,	 CLK_SEL_CSI4, 0x438, 12),
212  	DEF_MOD("ca53",		R9A09G011_CA53_CLK,	 CLK_DIV_A,    0x448, 0),
213  };
214  
215  static const struct rzg2l_reset r9a09g011_resets[] = {
216  	DEF_RST(R9A09G011_PFC_PRESETN,		0x600, 2),
217  	DEF_RST_MON(R9A09G011_SDI0_IXRST,	0x608, 0,  6),
218  	DEF_RST_MON(R9A09G011_SDI1_IXRST,	0x608, 1,  7),
219  	DEF_RST_MON(R9A09G011_EMM_IXRST,	0x608, 2,  8),
220  	DEF_RST(R9A09G011_USB_PRESET_N,		0x608, 7),
221  	DEF_RST(R9A09G011_USB_DRD_RESET,	0x608, 8),
222  	DEF_RST(R9A09G011_USB_ARESETN_P,	0x608, 9),
223  	DEF_RST(R9A09G011_USB_ARESETN_H,	0x608, 10),
224  	DEF_RST_MON(R9A09G011_ETH0_RST_HW_N,	0x608, 11, 11),
225  	DEF_RST_MON(R9A09G011_SYC_RST_N,	0x610, 9,  13),
226  	DEF_RST(R9A09G011_TIM_GPB_PRESETN,	0x614, 1),
227  	DEF_RST(R9A09G011_TIM_GPC_PRESETN,	0x614, 2),
228  	DEF_RST_MON(R9A09G011_PWM_GPF_PRESETN,	0x614, 5, 23),
229  	DEF_RST_MON(R9A09G011_CSI_GPG_PRESETN,	0x614, 6, 22),
230  	DEF_RST_MON(R9A09G011_CSI_GPH_PRESETN,	0x614, 7, 23),
231  	DEF_RST(R9A09G011_IIC_GPA_PRESETN,	0x614, 8),
232  	DEF_RST(R9A09G011_IIC_GPB_PRESETN,	0x614, 9),
233  	DEF_RST_MON(R9A09G011_WDT0_PRESETN,	0x614, 12, 19),
234  };
235  
236  static const unsigned int r9a09g011_crit_mod_clks[] __initconst = {
237  	MOD_CLK_BASE + R9A09G011_CA53_CLK,
238  	MOD_CLK_BASE + R9A09G011_CPERI_GRPB_PCLK,
239  	MOD_CLK_BASE + R9A09G011_CPERI_GRPC_PCLK,
240  	MOD_CLK_BASE + R9A09G011_CPERI_GRPF_PCLK,
241  	MOD_CLK_BASE + R9A09G011_CPERI_GRPG_PCLK,
242  	MOD_CLK_BASE + R9A09G011_CPERI_GRPH_PCLK,
243  	MOD_CLK_BASE + R9A09G011_GIC_CLK,
244  	MOD_CLK_BASE + R9A09G011_SYC_CNT_CLK,
245  	MOD_CLK_BASE + R9A09G011_URT_PCLK,
246  };
247  
248  const struct rzg2l_cpg_info r9a09g011_cpg_info = {
249  	/* Core Clocks */
250  	.core_clks = r9a09g011_core_clks,
251  	.num_core_clks = ARRAY_SIZE(r9a09g011_core_clks),
252  	.last_dt_core_clk = LAST_DT_CORE_CLK,
253  	.num_total_core_clks = MOD_CLK_BASE,
254  
255  	/* Critical Module Clocks */
256  	.crit_mod_clks = r9a09g011_crit_mod_clks,
257  	.num_crit_mod_clks = ARRAY_SIZE(r9a09g011_crit_mod_clks),
258  
259  	/* Module Clocks */
260  	.mod_clks = r9a09g011_mod_clks,
261  	.num_mod_clks = ARRAY_SIZE(r9a09g011_mod_clks),
262  	.num_hw_mod_clks = R9A09G011_CA53_CLK + 1,
263  
264  	/* Resets */
265  	.resets = r9a09g011_resets,
266  	.num_resets = ARRAY_SIZE(r9a09g011_resets),
267  
268  	.has_clk_mon_regs = false,
269  };
270