1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * AM43XX Clock init
4 *
5 * Copyright (C) 2013 Texas Instruments, Inc
6 * Tero Kristo (t-kristo@ti.com)
7 */
8
9#include <linux/kernel.h>
10#include <linux/list.h>
11#include <linux/clk.h>
12#include <linux/clk-provider.h>
13#include <linux/clk/ti.h>
14#include <dt-bindings/clock/am4.h>
15
16#include "clock.h"
17
18static const struct omap_clkctrl_reg_data am4_l3s_tsc_clkctrl_regs[] __initconst = {
19 { AM4_L3S_TSC_ADC_TSC_CLKCTRL, NULL, CLKF_SW_SUP, "adc_tsc_fck" },
20 { 0 },
21};
22
23static const char * const am4_synctimer_32kclk_parents[] __initconst = {
24 "mux_synctimer32k_ck",
25 NULL,
26};
27
28static const struct omap_clkctrl_bit_data am4_counter_32k_bit_data[] __initconst = {
29 { 8, TI_CLK_GATE, am4_synctimer_32kclk_parents, NULL },
30 { 0 },
31};
32
33static const struct omap_clkctrl_reg_data am4_l4_wkup_aon_clkctrl_regs[] __initconst = {
34 { AM4_L4_WKUP_AON_WKUP_M3_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sys_clkin_ck" },
35 { AM4_L4_WKUP_AON_COUNTER_32K_CLKCTRL, am4_counter_32k_bit_data, CLKF_SW_SUP, "l4-wkup-aon-clkctrl:0008:8" },
36 { 0 },
37};
38
39static const char * const am4_gpio0_dbclk_parents[] __initconst = {
40 "gpio0_dbclk_mux_ck",
41 NULL,
42};
43
44static const struct omap_clkctrl_bit_data am4_gpio1_bit_data[] __initconst = {
45 { 8, TI_CLK_GATE, am4_gpio0_dbclk_parents, NULL },
46 { 0 },
47};
48
49static const struct omap_clkctrl_reg_data am4_l4_wkup_clkctrl_regs[] __initconst = {
50 { AM4_L4_WKUP_L4_WKUP_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck" },
51 { AM4_L4_WKUP_TIMER1_CLKCTRL, NULL, CLKF_SW_SUP, "timer1_fck" },
52 { AM4_L4_WKUP_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "wdt1_fck" },
53 { AM4_L4_WKUP_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" },
54 { AM4_L4_WKUP_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" },
55 { AM4_L4_WKUP_SMARTREFLEX0_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex0_fck" },
56 { AM4_L4_WKUP_SMARTREFLEX1_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex1_fck" },
57 { AM4_L4_WKUP_CONTROL_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck" },
58 { AM4_L4_WKUP_GPIO1_CLKCTRL, am4_gpio1_bit_data, CLKF_SW_SUP, "sys_clkin_ck" },
59 { 0 },
60};
61
62static const struct omap_clkctrl_reg_data am4_mpu_clkctrl_regs[] __initconst = {
63 { AM4_MPU_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_mpu_m2_ck" },
64 { 0 },
65};
66
67static const struct omap_clkctrl_reg_data am4_gfx_l3_clkctrl_regs[] __initconst = {
68 { AM4_GFX_L3_GFX_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "gfx_fck_div_ck" },
69 { 0 },
70};
71
72static const struct omap_clkctrl_reg_data am4_l4_rtc_clkctrl_regs[] __initconst = {
73 { AM4_L4_RTC_RTC_CLKCTRL, NULL, CLKF_SW_SUP, "clkdiv32k_ick" },
74 { 0 },
75};
76
77static const struct omap_clkctrl_reg_data am4_l3_clkctrl_regs[] __initconst = {
78 { AM4_L3_L3_MAIN_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
79 { AM4_L3_AES_CLKCTRL, NULL, CLKF_SW_SUP, "aes0_fck" },
80 { AM4_L3_DES_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
81 { AM4_L3_L3_INSTR_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
82 { AM4_L3_OCMCRAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
83 { AM4_L3_SHAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
84 { AM4_L3_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
85 { AM4_L3_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
86 { AM4_L3_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
87 { AM4_L3_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
88 { AM4_L3_L4_HS_CLKCTRL, NULL, CLKF_SW_SUP, "l4hs_gclk" },
89 { 0 },
90};
91
92static const char * const am4_usb_otg_ss0_refclk960m_parents[] __initconst = {
93 "dpll_per_clkdcoldo",
94 NULL,
95};
96
97static const struct omap_clkctrl_bit_data am4_usb_otg_ss0_bit_data[] __initconst = {
98 { 8, TI_CLK_GATE, am4_usb_otg_ss0_refclk960m_parents, NULL },
99 { 0 },
100};
101
102static const struct omap_clkctrl_bit_data am4_usb_otg_ss1_bit_data[] __initconst = {
103 { 8, TI_CLK_GATE, am4_usb_otg_ss0_refclk960m_parents, NULL },
104 { 0 },
105};
106
107static const struct omap_clkctrl_reg_data am4_l3s_clkctrl_regs[] __initconst = {
108 { AM4_L3S_VPFE0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
109 { AM4_L3S_VPFE1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
110 { AM4_L3S_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk" },
111 { AM4_L3S_ADC1_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk" },
112 { AM4_L3S_MCASP0_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp0_fck" },
113 { AM4_L3S_MCASP1_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp1_fck" },
114 { AM4_L3S_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" },
115 { AM4_L3S_QSPI_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk" },
116 { AM4_L3S_USB_OTG_SS0_CLKCTRL, am4_usb_otg_ss0_bit_data, CLKF_SW_SUP, "l3s_gclk" },
117 { AM4_L3S_USB_OTG_SS1_CLKCTRL, am4_usb_otg_ss1_bit_data, CLKF_SW_SUP, "l3s_gclk" },
118 { 0 },
119};
120
121static const struct omap_clkctrl_reg_data am4_pruss_ocp_clkctrl_regs[] __initconst = {
122 { AM4_PRUSS_OCP_PRUSS_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "pruss_ocp_gclk" },
123 { 0 },
124};
125
126static const char * const am4_gpio1_dbclk_parents[] __initconst = {
127 "clkdiv32k_ick",
128 NULL,
129};
130
131static const struct omap_clkctrl_bit_data am4_gpio2_bit_data[] __initconst = {
132 { .bit: 8, .type: TI_CLK_GATE, .parents: am4_gpio1_dbclk_parents, NULL },
133 { 0 },
134};
135
136static const struct omap_clkctrl_bit_data am4_gpio3_bit_data[] __initconst = {
137 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
138 { 0 },
139};
140
141static const struct omap_clkctrl_bit_data am4_gpio4_bit_data[] __initconst = {
142 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
143 { 0 },
144};
145
146static const struct omap_clkctrl_bit_data am4_gpio5_bit_data[] __initconst = {
147 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
148 { 0 },
149};
150
151static const struct omap_clkctrl_bit_data am4_gpio6_bit_data[] __initconst = {
152 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
153 { 0 },
154};
155
156static const struct omap_clkctrl_reg_data am4_l4ls_clkctrl_regs[] __initconst = {
157 { AM4_L4LS_L4_LS_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
158 { AM4_L4LS_D_CAN0_CLKCTRL, NULL, CLKF_SW_SUP, "dcan0_fck" },
159 { AM4_L4LS_D_CAN1_CLKCTRL, NULL, CLKF_SW_SUP, "dcan1_fck" },
160 { AM4_L4LS_EPWMSS0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
161 { AM4_L4LS_EPWMSS1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
162 { AM4_L4LS_EPWMSS2_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
163 { AM4_L4LS_EPWMSS3_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
164 { AM4_L4LS_EPWMSS4_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
165 { AM4_L4LS_EPWMSS5_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
166 { AM4_L4LS_ELM_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
167 { AM4_L4LS_GPIO2_CLKCTRL, am4_gpio2_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
168 { AM4_L4LS_GPIO3_CLKCTRL, am4_gpio3_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
169 { AM4_L4LS_GPIO4_CLKCTRL, am4_gpio4_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
170 { AM4_L4LS_GPIO5_CLKCTRL, am4_gpio5_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
171 { AM4_L4LS_GPIO6_CLKCTRL, am4_gpio6_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
172 { AM4_L4LS_HDQ1W_CLKCTRL, NULL, CLKF_SW_SUP, "func_12m_clk" },
173 { AM4_L4LS_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
174 { AM4_L4LS_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
175 { AM4_L4LS_MAILBOX_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
176 { AM4_L4LS_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" },
177 { AM4_L4LS_MMC2_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" },
178 { AM4_L4LS_RNG_CLKCTRL, NULL, CLKF_SW_SUP, "rng_fck" },
179 { AM4_L4LS_SPI0_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
180 { AM4_L4LS_SPI1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
181 { AM4_L4LS_SPI2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
182 { AM4_L4LS_SPI3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
183 { AM4_L4LS_SPI4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
184 { AM4_L4LS_SPINLOCK_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
185 { AM4_L4LS_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "timer2_fck" },
186 { AM4_L4LS_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "timer3_fck" },
187 { AM4_L4LS_TIMER4_CLKCTRL, NULL, CLKF_SW_SUP, "timer4_fck" },
188 { AM4_L4LS_TIMER5_CLKCTRL, NULL, CLKF_SW_SUP, "timer5_fck" },
189 { AM4_L4LS_TIMER6_CLKCTRL, NULL, CLKF_SW_SUP, "timer6_fck" },
190 { AM4_L4LS_TIMER7_CLKCTRL, NULL, CLKF_SW_SUP, "timer7_fck" },
191 { AM4_L4LS_TIMER8_CLKCTRL, NULL, CLKF_SW_SUP, "timer8_fck" },
192 { AM4_L4LS_TIMER9_CLKCTRL, NULL, CLKF_SW_SUP, "timer9_fck" },
193 { AM4_L4LS_TIMER10_CLKCTRL, NULL, CLKF_SW_SUP, "timer10_fck" },
194 { AM4_L4LS_TIMER11_CLKCTRL, NULL, CLKF_SW_SUP, "timer11_fck" },
195 { AM4_L4LS_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
196 { AM4_L4LS_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
197 { AM4_L4LS_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
198 { AM4_L4LS_UART5_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
199 { AM4_L4LS_UART6_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
200 { AM4_L4LS_OCP2SCP0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
201 { AM4_L4LS_OCP2SCP1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
202 { 0 },
203};
204
205static const struct omap_clkctrl_reg_data am4_emif_clkctrl_regs[] __initconst = {
206 { AM4_EMIF_EMIF_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_ddr_m2_ck" },
207 { 0 },
208};
209
210static const struct omap_clkctrl_reg_data am4_dss_clkctrl_regs[] __initconst = {
211 { AM4_DSS_DSS_CORE_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_SET_RATE_PARENT, "disp_clk" },
212 { 0 },
213};
214
215static const struct omap_clkctrl_reg_data am4_cpsw_125mhz_clkctrl_regs[] __initconst = {
216 { AM4_CPSW_125MHZ_CPGMAC0_CLKCTRL, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk" },
217 { 0 },
218};
219
220const struct omap_clkctrl_data am4_clkctrl_data[] __initconst = {
221 { 0x44df2920, am4_l3s_tsc_clkctrl_regs },
222 { 0x44df2a28, am4_l4_wkup_aon_clkctrl_regs },
223 { 0x44df2a20, am4_l4_wkup_clkctrl_regs },
224 { 0x44df8320, am4_mpu_clkctrl_regs },
225 { 0x44df8420, am4_gfx_l3_clkctrl_regs },
226 { 0x44df8520, am4_l4_rtc_clkctrl_regs },
227 { 0x44df8820, am4_l3_clkctrl_regs },
228 { 0x44df8868, am4_l3s_clkctrl_regs },
229 { 0x44df8b20, am4_pruss_ocp_clkctrl_regs },
230 { 0x44df8c20, am4_l4ls_clkctrl_regs },
231 { 0x44df8f20, am4_emif_clkctrl_regs },
232 { 0x44df9220, am4_dss_clkctrl_regs },
233 { 0x44df9320, am4_cpsw_125mhz_clkctrl_regs },
234 { 0 },
235};
236
237const struct omap_clkctrl_data am438x_clkctrl_data[] __initconst = {
238 { 0x44df2920, am4_l3s_tsc_clkctrl_regs },
239 { 0x44df2a28, am4_l4_wkup_aon_clkctrl_regs },
240 { 0x44df2a20, am4_l4_wkup_clkctrl_regs },
241 { 0x44df8320, am4_mpu_clkctrl_regs },
242 { 0x44df8420, am4_gfx_l3_clkctrl_regs },
243 { 0x44df8820, am4_l3_clkctrl_regs },
244 { 0x44df8868, am4_l3s_clkctrl_regs },
245 { 0x44df8b20, am4_pruss_ocp_clkctrl_regs },
246 { 0x44df8c20, am4_l4ls_clkctrl_regs },
247 { 0x44df8f20, am4_emif_clkctrl_regs },
248 { 0x44df9220, am4_dss_clkctrl_regs },
249 { 0x44df9320, am4_cpsw_125mhz_clkctrl_regs },
250 { 0 },
251};
252
253static struct ti_dt_clk am43xx_clks[] = {
254 DT_CLK(NULL, "timer_32k_ck", "clkdiv32k_ick"),
255 DT_CLK(NULL, "timer_sys_ck", "sys_clkin_ck"),
256 DT_CLK(NULL, "gpio0_dbclk", "l4-wkup-clkctrl:0148:8"),
257 DT_CLK(NULL, "gpio1_dbclk", "l4ls-clkctrl:0058:8"),
258 DT_CLK(NULL, "gpio2_dbclk", "l4ls-clkctrl:0060:8"),
259 DT_CLK(NULL, "gpio3_dbclk", "l4ls-clkctrl:0068:8"),
260 DT_CLK(NULL, "gpio4_dbclk", "l4ls-clkctrl:0070:8"),
261 DT_CLK(NULL, "gpio5_dbclk", "l4ls-clkctrl:0078:8"),
262 DT_CLK(NULL, "synctimer_32kclk", "l4-wkup-aon-clkctrl:0008:8"),
263 DT_CLK(NULL, "usb_otg_ss0_refclk960m", "l3s-clkctrl:01f8:8"),
264 DT_CLK(NULL, "usb_otg_ss1_refclk960m", "l3s-clkctrl:0200:8"),
265 { .node_name = NULL },
266};
267
268static const char *enable_init_clks[] = {
269 /* AM4_L3_L3_MAIN_CLKCTRL, needed during suspend */
270 "l3-clkctrl:0000:0",
271};
272
273int __init am43xx_dt_clk_init(void)
274{
275 struct clk *clk1, *clk2;
276
277 ti_dt_clocks_register(oclks: am43xx_clks);
278
279 omap2_clk_disable_autoidle_all();
280
281 omap2_clk_enable_init_clocks(clk_names: enable_init_clks,
282 ARRAY_SIZE(enable_init_clks));
283
284 ti_clk_add_aliases();
285
286 /*
287 * cpsw_cpts_rft_clk has got the choice of 3 clocksources
288 * dpll_core_m4_ck, dpll_core_m5_ck and dpll_disp_m2_ck.
289 * By default dpll_core_m4_ck is selected, witn this as clock
290 * source the CPTS doesnot work properly. It gives clockcheck errors
291 * while running PTP.
292 * clockcheck: clock jumped backward or running slower than expected!
293 * By selecting dpll_core_m5_ck as the clocksource fixes this issue.
294 * In AM335x dpll_core_m5_ck is the default clocksource.
295 */
296 clk1 = clk_get_sys(NULL, con_id: "cpsw_cpts_rft_clk");
297 clk2 = clk_get_sys(NULL, con_id: "dpll_core_m5_ck");
298 clk_set_parent(clk: clk1, parent: clk2);
299
300 return 0;
301}
302

source code of linux/drivers/clk/ti/clk-43xx.c