clk-33xx.c (c13aca79ff3c4af5fd31a5b2743a90eba6e36a26) clk-33xx.c (e97017f935fcb3d505d86738817230552f58a19a)
1/*
2 * AM33XX Clock init
3 *
4 * Copyright (C) 2013 Texas Instruments, Inc
5 * Tero Kristo (t-kristo@ti.com)
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as

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18#include <linux/list.h>
19#include <linux/clk.h>
20#include <linux/clk-provider.h>
21#include <linux/clk/ti.h>
22#include <dt-bindings/clock/am3.h>
23
24#include "clock.h"
25
1/*
2 * AM33XX Clock init
3 *
4 * Copyright (C) 2013 Texas Instruments, Inc
5 * Tero Kristo (t-kristo@ti.com)
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as

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18#include <linux/list.h>
19#include <linux/clk.h>
20#include <linux/clk-provider.h>
21#include <linux/clk/ti.h>
22#include <dt-bindings/clock/am3.h>
23
24#include "clock.h"
25
26static const char * const am3_gpio1_dbclk_parents[] __initconst = {
27 "l4_per_cm:clk:0138:0",
28 NULL,
29};
30
31static const struct omap_clkctrl_bit_data am3_gpio2_bit_data[] __initconst = {
32 { 18, TI_CLK_GATE, am3_gpio1_dbclk_parents, NULL },
33 { 0 },
34};
35
36static const struct omap_clkctrl_bit_data am3_gpio3_bit_data[] __initconst = {
37 { 18, TI_CLK_GATE, am3_gpio1_dbclk_parents, NULL },
38 { 0 },
39};
40
41static const struct omap_clkctrl_bit_data am3_gpio4_bit_data[] __initconst = {
42 { 18, TI_CLK_GATE, am3_gpio1_dbclk_parents, NULL },
43 { 0 },
44};
45
46static const struct omap_clkctrl_reg_data am3_l4_per_clkctrl_regs[] __initconst = {
47 { AM3_CPGMAC0_CLKCTRL, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk", "cpsw_125mhz_clkdm" },
48 { AM3_LCDC_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_SET_RATE_PARENT, "lcd_gclk", "lcdc_clkdm" },
49 { AM3_USB_OTG_HS_CLKCTRL, NULL, CLKF_SW_SUP, "usbotg_fck", "l3s_clkdm" },
50 { AM3_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" },
51 { AM3_EMIF_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_ddr_m2_div2_ck", "l3_clkdm" },
52 { AM3_OCMCRAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" },
53 { AM3_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk", "l3s_clkdm" },
54 { AM3_MCASP0_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp0_fck", "l3s_clkdm" },
55 { AM3_UART6_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
56 { AM3_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" },
57 { AM3_ELM_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
58 { AM3_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
59 { AM3_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
60 { AM3_SPI0_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
61 { AM3_SPI1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
62 { AM3_L4_LS_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
63 { AM3_MCASP1_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp1_fck", "l3s_clkdm" },
64 { AM3_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
65 { AM3_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
66 { AM3_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
67 { AM3_UART5_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
68 { AM3_TIMER7_CLKCTRL, NULL, CLKF_SW_SUP, "timer7_fck" },
69 { AM3_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "timer2_fck" },
70 { AM3_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "timer3_fck" },
71 { AM3_TIMER4_CLKCTRL, NULL, CLKF_SW_SUP, "timer4_fck" },
72 { AM3_RNG_CLKCTRL, NULL, CLKF_SW_SUP, "rng_fck" },
73 { AM3_AES_CLKCTRL, NULL, CLKF_SW_SUP, "aes0_fck", "l3_clkdm" },
74 { AM3_SHAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" },
75 { AM3_GPIO2_CLKCTRL, am3_gpio2_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
76 { AM3_GPIO3_CLKCTRL, am3_gpio3_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
77 { AM3_GPIO4_CLKCTRL, am3_gpio4_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
78 { AM3_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" },
79 { AM3_D_CAN0_CLKCTRL, NULL, CLKF_SW_SUP, "dcan0_fck" },
80 { AM3_D_CAN1_CLKCTRL, NULL, CLKF_SW_SUP, "dcan1_fck" },
81 { AM3_EPWMSS1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
82 { AM3_EPWMSS0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
83 { AM3_EPWMSS2_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
84 { AM3_L3_INSTR_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" },
85 { AM3_L3_MAIN_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" },
86 { AM3_PRUSS_CLKCTRL, NULL, CLKF_SW_SUP, "pruss_ocp_gclk", "pruss_ocp_clkdm" },
87 { AM3_TIMER5_CLKCTRL, NULL, CLKF_SW_SUP, "timer5_fck" },
88 { AM3_TIMER6_CLKCTRL, NULL, CLKF_SW_SUP, "timer6_fck" },
89 { AM3_MMC2_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" },
90 { AM3_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk", "l3s_clkdm" },
91 { AM3_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" },
92 { AM3_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk", "l3_clkdm" },
93 { AM3_SPINLOCK_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
94 { AM3_MAILBOX_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
95 { AM3_L4_HS_CLKCTRL, NULL, CLKF_SW_SUP, "l4hs_gclk", "l4hs_clkdm" },
96 { AM3_OCPWP_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
97 { AM3_CLKDIV32K_CLKCTRL, NULL, CLKF_SW_SUP, "clkdiv32k_ck", "clk_24mhz_clkdm" },
98 { 0 },
99};
100
101static const char * const am3_gpio0_dbclk_parents[] __initconst = {
102 "gpio0_dbclk_mux_ck",
103 NULL,
104};
105
106static const struct omap_clkctrl_bit_data am3_gpio1_bit_data[] __initconst = {
107 { 18, TI_CLK_GATE, am3_gpio0_dbclk_parents, NULL },
108 { 0 },
109};
110
111static const char * const am3_dbg_sysclk_ck_parents[] __initconst = {
112 "sys_clkin_ck",
113 NULL,
114};
115
116static const char * const am3_trace_pmd_clk_mux_ck_parents[] __initconst = {
117 "l4_wkup_cm:clk:0010:19",
118 "l4_wkup_cm:clk:0010:30",
119 NULL,
120};
121
122static const char * const am3_trace_clk_div_ck_parents[] __initconst = {
123 "l4_wkup_cm:clk:0010:20",
124 NULL,
125};
126
127static const struct omap_clkctrl_div_data am3_trace_clk_div_ck_data __initconst = {
128 .max_div = 64,
129 .flags = CLK_DIVIDER_POWER_OF_TWO,
130};
131
132static const char * const am3_stm_clk_div_ck_parents[] __initconst = {
133 "l4_wkup_cm:clk:0010:22",
134 NULL,
135};
136
137static const struct omap_clkctrl_div_data am3_stm_clk_div_ck_data __initconst = {
138 .max_div = 64,
139 .flags = CLK_DIVIDER_POWER_OF_TWO,
140};
141
142static const char * const am3_dbg_clka_ck_parents[] __initconst = {
143 "dpll_core_m4_ck",
144 NULL,
145};
146
147static const struct omap_clkctrl_bit_data am3_debugss_bit_data[] __initconst = {
148 { 19, TI_CLK_GATE, am3_dbg_sysclk_ck_parents, NULL },
149 { 20, TI_CLK_MUX, am3_trace_pmd_clk_mux_ck_parents, NULL },
150 { 22, TI_CLK_MUX, am3_trace_pmd_clk_mux_ck_parents, NULL },
151 { 24, TI_CLK_DIVIDER, am3_trace_clk_div_ck_parents, &am3_trace_clk_div_ck_data },
152 { 27, TI_CLK_DIVIDER, am3_stm_clk_div_ck_parents, &am3_stm_clk_div_ck_data },
153 { 30, TI_CLK_GATE, am3_dbg_clka_ck_parents, NULL },
154 { 0 },
155};
156
157static const struct omap_clkctrl_reg_data am3_l4_wkup_clkctrl_regs[] __initconst = {
158 { AM3_CONTROL_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_core_m4_div2_ck" },
159 { AM3_GPIO1_CLKCTRL, am3_gpio1_bit_data, CLKF_SW_SUP, "dpll_core_m4_div2_ck" },
160 { AM3_L4_WKUP_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_core_m4_div2_ck" },
161 { AM3_DEBUGSS_CLKCTRL, am3_debugss_bit_data, CLKF_SW_SUP, "l4_wkup_cm:clk:0010:24", "l3_aon_clkdm" },
162 { AM3_WKUP_M3_CLKCTRL, NULL, CLKF_NO_IDLEST, "dpll_core_m4_div2_ck", "l4_wkup_aon_clkdm" },
163 { AM3_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" },
164 { AM3_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" },
165 { AM3_ADC_TSC_CLKCTRL, NULL, CLKF_SW_SUP, "adc_tsc_fck" },
166 { AM3_SMARTREFLEX0_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex0_fck" },
167 { AM3_TIMER1_CLKCTRL, NULL, CLKF_SW_SUP, "timer1_fck" },
168 { AM3_SMARTREFLEX1_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex1_fck" },
169 { AM3_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "wdt1_fck" },
170 { 0 },
171};
172
173static const struct omap_clkctrl_reg_data am3_mpu_clkctrl_regs[] __initconst = {
174 { AM3_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_mpu_m2_ck" },
175 { 0 },
176};
177
178static const struct omap_clkctrl_reg_data am3_l4_rtc_clkctrl_regs[] __initconst = {
179 { AM3_RTC_CLKCTRL, NULL, CLKF_SW_SUP, "clk_32768_ck" },
180 { 0 },
181};
182
183static const struct omap_clkctrl_reg_data am3_gfx_l3_clkctrl_regs[] __initconst = {
184 { AM3_GFX_CLKCTRL, NULL, CLKF_SW_SUP, "gfx_fck_div_ck" },
185 { 0 },
186};
187
188static const struct omap_clkctrl_reg_data am3_l4_cefuse_clkctrl_regs[] __initconst = {
189 { AM3_CEFUSE_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck" },
190 { 0 },
191};
192
193const struct omap_clkctrl_data am3_clkctrl_data[] __initconst = {
194 { 0x44e00014, am3_l4_per_clkctrl_regs },
195 { 0x44e00404, am3_l4_wkup_clkctrl_regs },
196 { 0x44e00604, am3_mpu_clkctrl_regs },
197 { 0x44e00800, am3_l4_rtc_clkctrl_regs },
198 { 0x44e00904, am3_gfx_l3_clkctrl_regs },
199 { 0x44e00a20, am3_l4_cefuse_clkctrl_regs },
200 { 0 },
201};
202
203static struct ti_dt_clk am33xx_clks[] = {
204 DT_CLK(NULL, "timer_32k_ck", "l4_per_cm:0138:0"),
205 DT_CLK(NULL, "timer_sys_ck", "sys_clkin_ck"),
206 DT_CLK(NULL, "clkdiv32k_ick", "l4_per_cm:0138:0"),
207 DT_CLK(NULL, "dbg_clka_ck", "l4_wkup_cm:0010:30"),
208 DT_CLK(NULL, "dbg_sysclk_ck", "l4_wkup_cm:0010:19"),
209 DT_CLK(NULL, "gpio0_dbclk", "l4_wkup_cm:0004:18"),
210 DT_CLK(NULL, "gpio1_dbclk", "l4_per_cm:0098:18"),
211 DT_CLK(NULL, "gpio2_dbclk", "l4_per_cm:009c:18"),
212 DT_CLK(NULL, "gpio3_dbclk", "l4_per_cm:00a0:18"),
213 DT_CLK(NULL, "stm_clk_div_ck", "l4_wkup_cm:0010:27"),
214 DT_CLK(NULL, "stm_pmd_clock_mux_ck", "l4_wkup_cm:0010:22"),
215 DT_CLK(NULL, "trace_clk_div_ck", "l4_wkup_cm:0010:24"),
216 DT_CLK(NULL, "trace_pmd_clk_mux_ck", "l4_wkup_cm:0010:20"),
217 { .node_name = NULL },
218};
219
220static const char *enable_init_clks[] = {
221 "dpll_ddr_m2_ck",
222 "dpll_mpu_m2_ck",
223 "l3_gclk",
224 "l4hs_gclk",
225 "l4fw_gclk",
226 "l4ls_gclk",
227 /* Required for external peripherals like, Audio codecs */
228 "clkout2_ck",
229};
230
231int __init am33xx_dt_clk_init(void)
232{
233 struct clk *clk1, *clk2;
234
26static const char *enable_init_clks[] = {
27 "dpll_ddr_m2_ck",
28 "dpll_mpu_m2_ck",
29 "l3_gclk",
30 "l4hs_gclk",
31 "l4fw_gclk",
32 "l4ls_gclk",
33 /* Required for external peripherals like, Audio codecs */
34 "clkout2_ck",
35};
36
37int __init am33xx_dt_clk_init(void)
38{
39 struct clk *clk1, *clk2;
40
235 ti_dt_clocks_register(am33xx_clks);
41 ti_dt_clocks_register(am33xx_compat_clks);
236
237 omap2_clk_disable_autoidle_all();
238
239 ti_clk_add_aliases();
240
241 omap2_clk_enable_init_clocks(enable_init_clks,
242 ARRAY_SIZE(enable_init_clks));
243

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43 omap2_clk_disable_autoidle_all();
44
45 ti_clk_add_aliases();
46
47 omap2_clk_enable_init_clocks(enable_init_clks,
48 ARRAY_SIZE(enable_init_clks));
49

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