1 /*
2 * AM43XX 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
9 * published by the Free Software Foundation version 2.
10 *
11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
12 * kind, whether express or implied; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17 #include <linux/kernel.h>
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/am4.h>
23
24 #include "clock.h"
25
26 static const struct omap_clkctrl_reg_data am4_l3s_tsc_clkctrl_regs[] __initconst = {
27 { AM4_L3S_TSC_ADC_TSC_CLKCTRL, NULL, CLKF_SW_SUP, "adc_tsc_fck" },
28 { 0 },
29 };
30
31 static const char * const am4_synctimer_32kclk_parents[] __initconst = {
32 "mux_synctimer32k_ck",
33 NULL,
34 };
35
36 static const struct omap_clkctrl_bit_data am4_counter_32k_bit_data[] __initconst = {
37 { 8, TI_CLK_GATE, am4_synctimer_32kclk_parents, NULL },
38 { 0 },
39 };
40
41 static const struct omap_clkctrl_reg_data am4_l4_wkup_aon_clkctrl_regs[] __initconst = {
42 { AM4_L4_WKUP_AON_WKUP_M3_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sys_clkin_ck" },
43 { AM4_L4_WKUP_AON_COUNTER_32K_CLKCTRL, am4_counter_32k_bit_data, CLKF_SW_SUP, "l4-wkup-aon-clkctrl:0008:8" },
44 { 0 },
45 };
46
47 static const char * const am4_gpio0_dbclk_parents[] __initconst = {
48 "gpio0_dbclk_mux_ck",
49 NULL,
50 };
51
52 static const struct omap_clkctrl_bit_data am4_gpio1_bit_data[] __initconst = {
53 { 8, TI_CLK_GATE, am4_gpio0_dbclk_parents, NULL },
54 { 0 },
55 };
56
57 static const struct omap_clkctrl_reg_data am4_l4_wkup_clkctrl_regs[] __initconst = {
58 { AM4_L4_WKUP_L4_WKUP_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck" },
59 { AM4_L4_WKUP_TIMER1_CLKCTRL, NULL, CLKF_SW_SUP, "timer1_fck" },
60 { AM4_L4_WKUP_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "wdt1_fck" },
61 { AM4_L4_WKUP_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" },
62 { AM4_L4_WKUP_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" },
63 { AM4_L4_WKUP_SMARTREFLEX0_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex0_fck" },
64 { AM4_L4_WKUP_SMARTREFLEX1_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex1_fck" },
65 { AM4_L4_WKUP_CONTROL_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck" },
66 { AM4_L4_WKUP_GPIO1_CLKCTRL, am4_gpio1_bit_data, CLKF_SW_SUP, "sys_clkin_ck" },
67 { 0 },
68 };
69
70 static const struct omap_clkctrl_reg_data am4_mpu_clkctrl_regs[] __initconst = {
71 { AM4_MPU_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_mpu_m2_ck" },
72 { 0 },
73 };
74
75 static const struct omap_clkctrl_reg_data am4_gfx_l3_clkctrl_regs[] __initconst = {
76 { AM4_GFX_L3_GFX_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "gfx_fck_div_ck" },
77 { 0 },
78 };
79
80 static const struct omap_clkctrl_reg_data am4_l4_rtc_clkctrl_regs[] __initconst = {
81 { AM4_L4_RTC_RTC_CLKCTRL, NULL, CLKF_SW_SUP, "clkdiv32k_ick" },
82 { 0 },
83 };
84
85 static const struct omap_clkctrl_reg_data am4_l3_clkctrl_regs[] __initconst = {
86 { AM4_L3_L3_MAIN_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
87 { AM4_L3_AES_CLKCTRL, NULL, CLKF_SW_SUP, "aes0_fck" },
88 { AM4_L3_DES_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
89 { AM4_L3_L3_INSTR_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
90 { AM4_L3_OCMCRAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
91 { AM4_L3_SHAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
92 { AM4_L3_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
93 { AM4_L3_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
94 { AM4_L3_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
95 { AM4_L3_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
96 { AM4_L3_L4_HS_CLKCTRL, NULL, CLKF_SW_SUP, "l4hs_gclk" },
97 { 0 },
98 };
99
100 static const char * const am4_usb_otg_ss0_refclk960m_parents[] __initconst = {
101 "dpll_per_clkdcoldo",
102 NULL,
103 };
104
105 static const struct omap_clkctrl_bit_data am4_usb_otg_ss0_bit_data[] __initconst = {
106 { 8, TI_CLK_GATE, am4_usb_otg_ss0_refclk960m_parents, NULL },
107 { 0 },
108 };
109
110 static const struct omap_clkctrl_bit_data am4_usb_otg_ss1_bit_data[] __initconst = {
111 { 8, TI_CLK_GATE, am4_usb_otg_ss0_refclk960m_parents, NULL },
112 { 0 },
113 };
114
115 static const struct omap_clkctrl_reg_data am4_l3s_clkctrl_regs[] __initconst = {
116 { AM4_L3S_VPFE0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
117 { AM4_L3S_VPFE1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" },
118 { AM4_L3S_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk" },
119 { AM4_L3S_MCASP0_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp0_fck" },
120 { AM4_L3S_MCASP1_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp1_fck" },
121 { AM4_L3S_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" },
122 { AM4_L3S_QSPI_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk" },
123 { AM4_L3S_USB_OTG_SS0_CLKCTRL, am4_usb_otg_ss0_bit_data, CLKF_SW_SUP, "l3s_gclk" },
124 { AM4_L3S_USB_OTG_SS1_CLKCTRL, am4_usb_otg_ss1_bit_data, CLKF_SW_SUP, "l3s_gclk" },
125 { 0 },
126 };
127
128 static const struct omap_clkctrl_reg_data am4_pruss_ocp_clkctrl_regs[] __initconst = {
129 { AM4_PRUSS_OCP_PRUSS_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "pruss_ocp_gclk" },
130 { 0 },
131 };
132
133 static const char * const am4_gpio1_dbclk_parents[] __initconst = {
134 "clkdiv32k_ick",
135 NULL,
136 };
137
138 static const struct omap_clkctrl_bit_data am4_gpio2_bit_data[] __initconst = {
139 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
140 { 0 },
141 };
142
143 static const struct omap_clkctrl_bit_data am4_gpio3_bit_data[] __initconst = {
144 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
145 { 0 },
146 };
147
148 static const struct omap_clkctrl_bit_data am4_gpio4_bit_data[] __initconst = {
149 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
150 { 0 },
151 };
152
153 static const struct omap_clkctrl_bit_data am4_gpio5_bit_data[] __initconst = {
154 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
155 { 0 },
156 };
157
158 static const struct omap_clkctrl_bit_data am4_gpio6_bit_data[] __initconst = {
159 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL },
160 { 0 },
161 };
162
163 static const struct omap_clkctrl_reg_data am4_l4ls_clkctrl_regs[] __initconst = {
164 { AM4_L4LS_L4_LS_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
165 { AM4_L4LS_D_CAN0_CLKCTRL, NULL, CLKF_SW_SUP, "dcan0_fck" },
166 { AM4_L4LS_D_CAN1_CLKCTRL, NULL, CLKF_SW_SUP, "dcan1_fck" },
167 { AM4_L4LS_EPWMSS0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
168 { AM4_L4LS_EPWMSS1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
169 { AM4_L4LS_EPWMSS2_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
170 { AM4_L4LS_EPWMSS3_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
171 { AM4_L4LS_EPWMSS4_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
172 { AM4_L4LS_EPWMSS5_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
173 { AM4_L4LS_ELM_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
174 { AM4_L4LS_GPIO2_CLKCTRL, am4_gpio2_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
175 { AM4_L4LS_GPIO3_CLKCTRL, am4_gpio3_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
176 { AM4_L4LS_GPIO4_CLKCTRL, am4_gpio4_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
177 { AM4_L4LS_GPIO5_CLKCTRL, am4_gpio5_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
178 { AM4_L4LS_GPIO6_CLKCTRL, am4_gpio6_bit_data, CLKF_SW_SUP, "l4ls_gclk" },
179 { AM4_L4LS_HDQ1W_CLKCTRL, NULL, CLKF_SW_SUP, "func_12m_clk" },
180 { AM4_L4LS_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
181 { AM4_L4LS_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
182 { AM4_L4LS_MAILBOX_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
183 { AM4_L4LS_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" },
184 { AM4_L4LS_MMC2_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" },
185 { AM4_L4LS_RNG_CLKCTRL, NULL, CLKF_SW_SUP, "rng_fck" },
186 { AM4_L4LS_SPI0_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
187 { AM4_L4LS_SPI1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
188 { AM4_L4LS_SPI2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
189 { AM4_L4LS_SPI3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
190 { AM4_L4LS_SPI4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
191 { AM4_L4LS_SPINLOCK_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
192 { AM4_L4LS_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "timer2_fck" },
193 { AM4_L4LS_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "timer3_fck" },
194 { AM4_L4LS_TIMER4_CLKCTRL, NULL, CLKF_SW_SUP, "timer4_fck" },
195 { AM4_L4LS_TIMER5_CLKCTRL, NULL, CLKF_SW_SUP, "timer5_fck" },
196 { AM4_L4LS_TIMER6_CLKCTRL, NULL, CLKF_SW_SUP, "timer6_fck" },
197 { AM4_L4LS_TIMER7_CLKCTRL, NULL, CLKF_SW_SUP, "timer7_fck" },
198 { AM4_L4LS_TIMER8_CLKCTRL, NULL, CLKF_SW_SUP, "timer8_fck" },
199 { AM4_L4LS_TIMER9_CLKCTRL, NULL, CLKF_SW_SUP, "timer9_fck" },
200 { AM4_L4LS_TIMER10_CLKCTRL, NULL, CLKF_SW_SUP, "timer10_fck" },
201 { AM4_L4LS_TIMER11_CLKCTRL, NULL, CLKF_SW_SUP, "timer11_fck" },
202 { AM4_L4LS_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
203 { AM4_L4LS_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
204 { AM4_L4LS_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
205 { AM4_L4LS_UART5_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
206 { AM4_L4LS_UART6_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" },
207 { AM4_L4LS_OCP2SCP0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
208 { AM4_L4LS_OCP2SCP1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" },
209 { 0 },
210 };
211
212 static const struct omap_clkctrl_reg_data am4_emif_clkctrl_regs[] __initconst = {
213 { AM4_EMIF_EMIF_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_ddr_m2_ck" },
214 { 0 },
215 };
216
217 static const struct omap_clkctrl_reg_data am4_dss_clkctrl_regs[] __initconst = {
218 { AM4_DSS_DSS_CORE_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_SET_RATE_PARENT, "disp_clk" },
219 { 0 },
220 };
221
222 static const struct omap_clkctrl_reg_data am4_cpsw_125mhz_clkctrl_regs[] __initconst = {
223 { AM4_CPSW_125MHZ_CPGMAC0_CLKCTRL, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk" },
224 { 0 },
225 };
226
227 const struct omap_clkctrl_data am4_clkctrl_data[] __initconst = {
228 { 0x44df2920, am4_l3s_tsc_clkctrl_regs },
229 { 0x44df2a28, am4_l4_wkup_aon_clkctrl_regs },
230 { 0x44df2a20, am4_l4_wkup_clkctrl_regs },
231 { 0x44df8320, am4_mpu_clkctrl_regs },
232 { 0x44df8420, am4_gfx_l3_clkctrl_regs },
233 { 0x44df8520, am4_l4_rtc_clkctrl_regs },
234 { 0x44df8820, am4_l3_clkctrl_regs },
235 { 0x44df8868, am4_l3s_clkctrl_regs },
236 { 0x44df8b20, am4_pruss_ocp_clkctrl_regs },
237 { 0x44df8c20, am4_l4ls_clkctrl_regs },
238 { 0x44df8f20, am4_emif_clkctrl_regs },
239 { 0x44df9220, am4_dss_clkctrl_regs },
240 { 0x44df9320, am4_cpsw_125mhz_clkctrl_regs },
241 { 0 },
242 };
243
244 const struct omap_clkctrl_data am438x_clkctrl_data[] __initconst = {
245 { 0x44df2920, am4_l3s_tsc_clkctrl_regs },
246 { 0x44df2a28, am4_l4_wkup_aon_clkctrl_regs },
247 { 0x44df2a20, am4_l4_wkup_clkctrl_regs },
248 { 0x44df8320, am4_mpu_clkctrl_regs },
249 { 0x44df8420, am4_gfx_l3_clkctrl_regs },
250 { 0x44df8820, am4_l3_clkctrl_regs },
251 { 0x44df8868, am4_l3s_clkctrl_regs },
252 { 0x44df8b20, am4_pruss_ocp_clkctrl_regs },
253 { 0x44df8c20, am4_l4ls_clkctrl_regs },
254 { 0x44df8f20, am4_emif_clkctrl_regs },
255 { 0x44df9220, am4_dss_clkctrl_regs },
256 { 0x44df9320, am4_cpsw_125mhz_clkctrl_regs },
257 { 0 },
258 };
259
260 static struct ti_dt_clk am43xx_clks[] = {
261 DT_CLK(NULL, "timer_32k_ck", "clkdiv32k_ick"),
262 DT_CLK(NULL, "timer_sys_ck", "sys_clkin_ck"),
263 DT_CLK(NULL, "gpio0_dbclk", "l4-wkup-clkctrl:0148:8"),
264 DT_CLK(NULL, "gpio1_dbclk", "l4ls-clkctrl:0058:8"),
265 DT_CLK(NULL, "gpio2_dbclk", "l4ls-clkctrl:0060:8"),
266 DT_CLK(NULL, "gpio3_dbclk", "l4ls-clkctrl:0068:8"),
267 DT_CLK(NULL, "gpio4_dbclk", "l4ls-clkctrl:0070:8"),
268 DT_CLK(NULL, "gpio5_dbclk", "l4ls-clkctrl:0078:8"),
269 DT_CLK(NULL, "synctimer_32kclk", "l4-wkup-aon-clkctrl:0008:8"),
270 DT_CLK(NULL, "usb_otg_ss0_refclk960m", "l3s-clkctrl:01f8:8"),
271 DT_CLK(NULL, "usb_otg_ss1_refclk960m", "l3s-clkctrl:0200:8"),
272 { .node_name = NULL },
273 };
274
am43xx_dt_clk_init(void)275 int __init am43xx_dt_clk_init(void)
276 {
277 struct clk *clk1, *clk2;
278
279 if (ti_clk_get_features()->flags & TI_CLK_CLKCTRL_COMPAT)
280 ti_dt_clocks_register(am43xx_compat_clks);
281 else
282 ti_dt_clocks_register(am43xx_clks);
283
284 omap2_clk_disable_autoidle_all();
285
286 ti_clk_add_aliases();
287
288 /*
289 * cpsw_cpts_rft_clk has got the choice of 3 clocksources
290 * dpll_core_m4_ck, dpll_core_m5_ck and dpll_disp_m2_ck.
291 * By default dpll_core_m4_ck is selected, witn this as clock
292 * source the CPTS doesnot work properly. It gives clockcheck errors
293 * while running PTP.
294 * clockcheck: clock jumped backward or running slower than expected!
295 * By selecting dpll_core_m5_ck as the clocksource fixes this issue.
296 * In AM335x dpll_core_m5_ck is the default clocksource.
297 */
298 clk1 = clk_get_sys(NULL, "cpsw_cpts_rft_clk");
299 clk2 = clk_get_sys(NULL, "dpll_core_m5_ck");
300 clk_set_parent(clk1, clk2);
301
302 return 0;
303 }
304
