2 * Copyright (C) 2016 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/arch/clock.h>
12 #include <asm/arch/sys_proto.h>
14 DECLARE_GLOBAL_DATA_PTR;
18 #ifdef CONFIG_FSL_ESDHC
19 #if CONFIG_SYS_FSL_ESDHC_ADDR == USDHC0_RBASE
20 gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
21 #elif CONFIG_SYS_FSL_ESDHC_ADDR == USDHC1_RBASE
22 gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
28 static u32 get_fast_plat_clk(void)
30 return scg_clk_get_rate(SCG_NIC0_CLK);
33 static u32 get_slow_plat_clk(void)
35 return scg_clk_get_rate(SCG_NIC1_CLK);
38 static u32 get_ipg_clk(void)
40 return scg_clk_get_rate(SCG_NIC1_BUS_CLK);
43 u32 get_lpuart_clk(void)
47 const u32 lpuart_array[] = {
58 const enum pcc_clk lpuart_pcc_clks[] = {
65 for (index = 0; index < 8; index++) {
66 if (lpuart_array[index] == LPUART_BASE)
70 if (index < 4 || index > 7)
73 return pcc_clock_get_rate(lpuart_pcc_clks[index - 4]);
76 unsigned int mxc_get_clock(enum mxc_clock clk)
80 return scg_clk_get_rate(SCG_CORE_CLK);
82 return get_fast_plat_clk();
84 return get_slow_plat_clk();
88 return pcc_clock_get_rate(PER_CLK_LPI2C4);
90 return get_lpuart_clk();
92 return pcc_clock_get_rate(PER_CLK_USDHC0);
94 return pcc_clock_get_rate(PER_CLK_USDHC1);
96 return scg_clk_get_rate(SCG_DDR_CLK);
98 printf("Unsupported mxc_clock %d\n", clk);
105 void init_clk_usdhc(u32 index)
109 /*Disable the clock before configure it */
110 pcc_clock_enable(PER_CLK_USDHC0, false);
112 /* 158MHz / 1 = 158MHz */
113 pcc_clock_sel(PER_CLK_USDHC0, SCG_NIC1_CLK);
114 pcc_clock_div_config(PER_CLK_USDHC0, false, 1);
115 pcc_clock_enable(PER_CLK_USDHC0, true);
118 /*Disable the clock before configure it */
119 pcc_clock_enable(PER_CLK_USDHC1, false);
121 /* 158MHz / 1 = 158MHz */
122 pcc_clock_sel(PER_CLK_USDHC1, SCG_NIC1_CLK);
123 pcc_clock_div_config(PER_CLK_USDHC1, false, 1);
124 pcc_clock_enable(PER_CLK_USDHC1, true);
127 printf("Invalid index for USDHC %d\n", index);
132 #ifdef CONFIG_MXC_OCOTP
134 #define OCOTP_CTRL_PCC1_SLOT (38)
135 #define OCOTP_CTRL_HIGH4K_PCC1_SLOT (39)
137 void enable_ocotp_clk(unsigned char enable)
142 * Seems the OCOTP CLOCKs have been enabled at default,
143 * check its inuse flag
146 val = readl(PCC1_RBASE + 4 * OCOTP_CTRL_PCC1_SLOT);
147 if (!(val & PCC_INUSE_MASK))
148 writel(PCC_CGC_MASK, (PCC1_RBASE + 4 * OCOTP_CTRL_PCC1_SLOT));
150 val = readl(PCC1_RBASE + 4 * OCOTP_CTRL_HIGH4K_PCC1_SLOT);
151 if (!(val & PCC_INUSE_MASK))
153 (PCC1_RBASE + 4 * OCOTP_CTRL_HIGH4K_PCC1_SLOT));
157 void enable_usboh3_clk(unsigned char enable)
160 pcc_clock_enable(PER_CLK_USB0, false);
161 pcc_clock_sel(PER_CLK_USB0, SCG_NIC1_BUS_CLK);
162 pcc_clock_enable(PER_CLK_USB0, true);
164 #ifdef CONFIG_USB_MAX_CONTROLLER_COUNT
165 if (CONFIG_USB_MAX_CONTROLLER_COUNT > 1) {
166 pcc_clock_enable(PER_CLK_USB1, false);
167 pcc_clock_sel(PER_CLK_USB1, SCG_NIC1_BUS_CLK);
168 pcc_clock_enable(PER_CLK_USB1, true);
172 pcc_clock_enable(PER_CLK_USB_PHY, true);
173 pcc_clock_enable(PER_CLK_USB_PL301, true);
175 pcc_clock_enable(PER_CLK_USB0, false);
176 pcc_clock_enable(PER_CLK_USB1, false);
177 pcc_clock_enable(PER_CLK_USB_PHY, false);
178 pcc_clock_enable(PER_CLK_USB_PL301, false);
182 static void lpuart_set_clk(uint32_t index, enum scg_clk clk)
184 const enum pcc_clk lpuart_pcc_clks[] = {
191 if (index < 4 || index > 7)
194 #ifndef CONFIG_CLK_DEBUG
195 pcc_clock_enable(lpuart_pcc_clks[index - 4], false);
197 pcc_clock_sel(lpuart_pcc_clks[index - 4], clk);
198 pcc_clock_enable(lpuart_pcc_clks[index - 4], true);
201 static void init_clk_lpuart(void)
205 const u32 lpuart_array[] = {
216 for (i = 0; i < 8; i++) {
217 if (lpuart_array[i] == LPUART_BASE) {
223 lpuart_set_clk(index, SCG_SOSC_DIV2_CLK);
226 static void init_clk_rgpio2p(void)
228 /*Enable RGPIO2P1 clock */
229 pcc_clock_enable(PER_CLK_RGPIO2P1, true);
232 * Hard code to enable RGPIO2P0 clock since it is not
233 * in clock frame for A7 domain
235 writel(PCC_CGC_MASK, (PCC0_RBASE + 0x3C));
238 /* Configure PLL/PFD freq */
239 void clock_init(void)
242 * ROM has enabled clocks:
243 * A4 side: SIRC 16Mhz (DIV1-3 off), FIRC 48Mhz (DIV1-2 on),
244 * Non-LP-boot: SOSC, SPLL PFD0 (scs selected)
245 * A7 side: SPLL PFD0 (scs selected, 413Mhz),
246 * APLL PFD0 (352Mhz), DDRCLK, all NIC clocks
247 * A7 Plat0 (NIC0) = 176Mhz, Plat1 (NIC1) = 176Mhz,
248 * IP BUS (NIC1_BUS) = 58.6Mhz
251 * 1. Enable PFD1-3 of APLL for A7 side. Enable FIRC and DIVs.
253 * 3. Init the clocks of peripherals used in u-boot bu
254 * without set rate interface.The clocks for these
255 * peripherals are enabled in this intialization.
256 * 4.Other peripherals with set clock rate interface
257 * does not be set in this function.
262 scg_a7_soscdiv_init();
264 /* APLL PFD1 = 270Mhz, PFD2=480Mhz, PFD3=800Mhz */
265 scg_enable_pll_pfd(SCG_APLL_PFD1_CLK, 35);
266 scg_enable_pll_pfd(SCG_APLL_PFD2_CLK, 20);
267 scg_enable_pll_pfd(SCG_APLL_PFD3_CLK, 12);
273 enable_usboh3_clk(1);
277 * Dump some core clockes.
279 int do_mx7_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
283 freq = decode_pll(PLL_A7_SPLL);
284 printf("PLL_A7_SPLL %8d MHz\n", freq / 1000000);
286 freq = decode_pll(PLL_A7_APLL);
287 printf("PLL_A7_APLL %8d MHz\n", freq / 1000000);
289 freq = decode_pll(PLL_USB);
290 printf("PLL_USB %8d MHz\n", freq / 1000000);
294 printf("CORE %8d kHz\n", scg_clk_get_rate(SCG_CORE_CLK) / 1000);
295 printf("IPG %8d kHz\n", mxc_get_clock(MXC_IPG_CLK) / 1000);
296 printf("UART %8d kHz\n", mxc_get_clock(MXC_UART_CLK) / 1000);
297 printf("AHB %8d kHz\n", mxc_get_clock(MXC_AHB_CLK) / 1000);
298 printf("AXI %8d kHz\n", mxc_get_clock(MXC_AXI_CLK) / 1000);
299 printf("DDR %8d kHz\n", mxc_get_clock(MXC_DDR_CLK) / 1000);
300 printf("USDHC1 %8d kHz\n", mxc_get_clock(MXC_ESDHC_CLK) / 1000);
301 printf("USDHC2 %8d kHz\n", mxc_get_clock(MXC_ESDHC2_CLK) / 1000);
302 printf("I2C4 %8d kHz\n", mxc_get_clock(MXC_I2C_CLK) / 1000);
304 addr = (u32) clock_init;
305 printf("[%s] addr = 0x%08X\r\n", __func__, addr);
312 clocks, CONFIG_SYS_MAXARGS, 1, do_mx7_showclocks,