diff options
Diffstat (limited to 'arch/arm/cpu/armv7/mx7ulp/clock.c')
| -rw-r--r-- | arch/arm/cpu/armv7/mx7ulp/clock.c | 365 |
1 files changed, 0 insertions, 365 deletions
diff --git a/arch/arm/cpu/armv7/mx7ulp/clock.c b/arch/arm/cpu/armv7/mx7ulp/clock.c deleted file mode 100644 index 77b282a..0000000 --- a/arch/arm/cpu/armv7/mx7ulp/clock.c +++ /dev/null @@ -1,365 +0,0 @@ -/* - * Copyright (C) 2016 Freescale Semiconductor, Inc. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <div64.h> -#include <asm/io.h> -#include <errno.h> -#include <asm/arch/clock.h> -#include <asm/arch/sys_proto.h> - -DECLARE_GLOBAL_DATA_PTR; - -int get_clocks(void) -{ -#ifdef CONFIG_FSL_ESDHC -#if CONFIG_SYS_FSL_ESDHC_ADDR == USDHC0_RBASE - gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); -#elif CONFIG_SYS_FSL_ESDHC_ADDR == USDHC1_RBASE - gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); -#endif -#endif - return 0; -} - -static u32 get_fast_plat_clk(void) -{ - return scg_clk_get_rate(SCG_NIC0_CLK); -} - -static u32 get_slow_plat_clk(void) -{ - return scg_clk_get_rate(SCG_NIC1_CLK); -} - -static u32 get_ipg_clk(void) -{ - return scg_clk_get_rate(SCG_NIC1_BUS_CLK); -} - -u32 get_lpuart_clk(void) -{ - int index = 0; - - const u32 lpuart_array[] = { - LPUART0_RBASE, - LPUART1_RBASE, - LPUART2_RBASE, - LPUART3_RBASE, - LPUART4_RBASE, - LPUART5_RBASE, - LPUART6_RBASE, - LPUART7_RBASE, - }; - - const enum pcc_clk lpuart_pcc_clks[] = { - PER_CLK_LPUART4, - PER_CLK_LPUART5, - PER_CLK_LPUART6, - PER_CLK_LPUART7, - }; - - for (index = 0; index < 8; index++) { - if (lpuart_array[index] == LPUART_BASE) - break; - } - - if (index < 4 || index > 7) - return 0; - - return pcc_clock_get_rate(lpuart_pcc_clks[index - 4]); -} - -#ifdef CONFIG_SYS_LPI2C_IMX -int enable_i2c_clk(unsigned char enable, unsigned i2c_num) -{ - /* Set parent to FIRC DIV2 clock */ - const enum pcc_clk lpi2c_pcc_clks[] = { - PER_CLK_LPI2C4, - PER_CLK_LPI2C5, - PER_CLK_LPI2C6, - PER_CLK_LPI2C7, - }; - - if (i2c_num < 4 || i2c_num > 7) - return -EINVAL; - - if (enable) { - pcc_clock_enable(lpi2c_pcc_clks[i2c_num - 4], false); - pcc_clock_sel(lpi2c_pcc_clks[i2c_num - 4], SCG_FIRC_DIV2_CLK); - pcc_clock_enable(lpi2c_pcc_clks[i2c_num - 4], true); - } else { - pcc_clock_enable(lpi2c_pcc_clks[i2c_num - 4], false); - } - return 0; -} - -u32 imx_get_i2cclk(unsigned i2c_num) -{ - const enum pcc_clk lpi2c_pcc_clks[] = { - PER_CLK_LPI2C4, - PER_CLK_LPI2C5, - PER_CLK_LPI2C6, - PER_CLK_LPI2C7, - }; - - if (i2c_num < 4 || i2c_num > 7) - return 0; - - return pcc_clock_get_rate(lpi2c_pcc_clks[i2c_num - 4]); -} -#endif - -unsigned int mxc_get_clock(enum mxc_clock clk) -{ - switch (clk) { - case MXC_ARM_CLK: - return scg_clk_get_rate(SCG_CORE_CLK); - case MXC_AXI_CLK: - return get_fast_plat_clk(); - case MXC_AHB_CLK: - return get_slow_plat_clk(); - case MXC_IPG_CLK: - return get_ipg_clk(); - case MXC_I2C_CLK: - return pcc_clock_get_rate(PER_CLK_LPI2C4); - case MXC_UART_CLK: - return get_lpuart_clk(); - case MXC_ESDHC_CLK: - return pcc_clock_get_rate(PER_CLK_USDHC0); - case MXC_ESDHC2_CLK: - return pcc_clock_get_rate(PER_CLK_USDHC1); - case MXC_DDR_CLK: - return scg_clk_get_rate(SCG_DDR_CLK); - default: - printf("Unsupported mxc_clock %d\n", clk); - break; - } - - return 0; -} - -void init_clk_usdhc(u32 index) -{ - switch (index) { - case 0: - /*Disable the clock before configure it */ - pcc_clock_enable(PER_CLK_USDHC0, false); - - /* 158MHz / 1 = 158MHz */ - pcc_clock_sel(PER_CLK_USDHC0, SCG_NIC1_CLK); - pcc_clock_div_config(PER_CLK_USDHC0, false, 1); - pcc_clock_enable(PER_CLK_USDHC0, true); - break; - case 1: - /*Disable the clock before configure it */ - pcc_clock_enable(PER_CLK_USDHC1, false); - - /* 158MHz / 1 = 158MHz */ - pcc_clock_sel(PER_CLK_USDHC1, SCG_NIC1_CLK); - pcc_clock_div_config(PER_CLK_USDHC1, false, 1); - pcc_clock_enable(PER_CLK_USDHC1, true); - break; - default: - printf("Invalid index for USDHC %d\n", index); - break; - } -} - -#ifdef CONFIG_MXC_OCOTP - -#define OCOTP_CTRL_PCC1_SLOT (38) -#define OCOTP_CTRL_HIGH4K_PCC1_SLOT (39) - -void enable_ocotp_clk(unsigned char enable) -{ - u32 val; - - /* - * Seems the OCOTP CLOCKs have been enabled at default, - * check its inuse flag - */ - - val = readl(PCC1_RBASE + 4 * OCOTP_CTRL_PCC1_SLOT); - if (!(val & PCC_INUSE_MASK)) - writel(PCC_CGC_MASK, (PCC1_RBASE + 4 * OCOTP_CTRL_PCC1_SLOT)); - - val = readl(PCC1_RBASE + 4 * OCOTP_CTRL_HIGH4K_PCC1_SLOT); - if (!(val & PCC_INUSE_MASK)) - writel(PCC_CGC_MASK, - (PCC1_RBASE + 4 * OCOTP_CTRL_HIGH4K_PCC1_SLOT)); -} -#endif - -void enable_usboh3_clk(unsigned char enable) -{ - if (enable) { - pcc_clock_enable(PER_CLK_USB0, false); - pcc_clock_sel(PER_CLK_USB0, SCG_NIC1_BUS_CLK); - pcc_clock_enable(PER_CLK_USB0, true); - -#ifdef CONFIG_USB_MAX_CONTROLLER_COUNT - if (CONFIG_USB_MAX_CONTROLLER_COUNT > 1) { - pcc_clock_enable(PER_CLK_USB1, false); - pcc_clock_sel(PER_CLK_USB1, SCG_NIC1_BUS_CLK); - pcc_clock_enable(PER_CLK_USB1, true); - } -#endif - - pcc_clock_enable(PER_CLK_USB_PHY, true); - pcc_clock_enable(PER_CLK_USB_PL301, true); - } else { - pcc_clock_enable(PER_CLK_USB0, false); - pcc_clock_enable(PER_CLK_USB1, false); - pcc_clock_enable(PER_CLK_USB_PHY, false); - pcc_clock_enable(PER_CLK_USB_PL301, false); - } -} - -static void lpuart_set_clk(uint32_t index, enum scg_clk clk) -{ - const enum pcc_clk lpuart_pcc_clks[] = { - PER_CLK_LPUART4, - PER_CLK_LPUART5, - PER_CLK_LPUART6, - PER_CLK_LPUART7, - }; - - if (index < 4 || index > 7) - return; - -#ifndef CONFIG_CLK_DEBUG - pcc_clock_enable(lpuart_pcc_clks[index - 4], false); -#endif - pcc_clock_sel(lpuart_pcc_clks[index - 4], clk); - pcc_clock_enable(lpuart_pcc_clks[index - 4], true); -} - -static void init_clk_lpuart(void) -{ - u32 index = 0, i; - - const u32 lpuart_array[] = { - LPUART0_RBASE, - LPUART1_RBASE, - LPUART2_RBASE, - LPUART3_RBASE, - LPUART4_RBASE, - LPUART5_RBASE, - LPUART6_RBASE, - LPUART7_RBASE, - }; - - for (i = 0; i < 8; i++) { - if (lpuart_array[i] == LPUART_BASE) { - index = i; - break; - } - } - - lpuart_set_clk(index, SCG_SOSC_DIV2_CLK); -} - -static void init_clk_rgpio2p(void) -{ - /*Enable RGPIO2P1 clock */ - pcc_clock_enable(PER_CLK_RGPIO2P1, true); - - /* - * Hard code to enable RGPIO2P0 clock since it is not - * in clock frame for A7 domain - */ - writel(PCC_CGC_MASK, (PCC0_RBASE + 0x3C)); -} - -/* Configure PLL/PFD freq */ -void clock_init(void) -{ - /* - * ROM has enabled clocks: - * A4 side: SIRC 16Mhz (DIV1-3 off), FIRC 48Mhz (DIV1-2 on), - * Non-LP-boot: SOSC, SPLL PFD0 (scs selected) - * A7 side: SPLL PFD0 (scs selected, 413Mhz), - * APLL PFD0 (352Mhz), DDRCLK, all NIC clocks - * A7 Plat0 (NIC0) = 176Mhz, Plat1 (NIC1) = 176Mhz, - * IP BUS (NIC1_BUS) = 58.6Mhz - * - * In u-boot: - * 1. Enable PFD1-3 of APLL for A7 side. Enable FIRC and DIVs. - * 2. Enable USB PLL - * 3. Init the clocks of peripherals used in u-boot bu - * without set rate interface.The clocks for these - * peripherals are enabled in this intialization. - * 4.Other peripherals with set clock rate interface - * does not be set in this function. - */ - - scg_a7_firc_init(); - - scg_a7_soscdiv_init(); - - /* APLL PFD1 = 270Mhz, PFD2=480Mhz, PFD3=800Mhz */ - scg_enable_pll_pfd(SCG_APLL_PFD1_CLK, 35); - scg_enable_pll_pfd(SCG_APLL_PFD2_CLK, 20); - scg_enable_pll_pfd(SCG_APLL_PFD3_CLK, 12); - - init_clk_lpuart(); - - init_clk_rgpio2p(); - - enable_usboh3_clk(1); -} - -#ifdef CONFIG_SECURE_BOOT -void hab_caam_clock_enable(unsigned char enable) -{ - if (enable) - pcc_clock_enable(PER_CLK_CAAM, true); - else - pcc_clock_enable(PER_CLK_CAAM, false); -} -#endif - -/* - * Dump some core clockes. - */ -int do_mx7_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - u32 addr = 0; - u32 freq; - freq = decode_pll(PLL_A7_SPLL); - printf("PLL_A7_SPLL %8d MHz\n", freq / 1000000); - - freq = decode_pll(PLL_A7_APLL); - printf("PLL_A7_APLL %8d MHz\n", freq / 1000000); - - freq = decode_pll(PLL_USB); - printf("PLL_USB %8d MHz\n", freq / 1000000); - - printf("\n"); - - printf("CORE %8d kHz\n", scg_clk_get_rate(SCG_CORE_CLK) / 1000); - printf("IPG %8d kHz\n", mxc_get_clock(MXC_IPG_CLK) / 1000); - printf("UART %8d kHz\n", mxc_get_clock(MXC_UART_CLK) / 1000); - printf("AHB %8d kHz\n", mxc_get_clock(MXC_AHB_CLK) / 1000); - printf("AXI %8d kHz\n", mxc_get_clock(MXC_AXI_CLK) / 1000); - printf("DDR %8d kHz\n", mxc_get_clock(MXC_DDR_CLK) / 1000); - printf("USDHC1 %8d kHz\n", mxc_get_clock(MXC_ESDHC_CLK) / 1000); - printf("USDHC2 %8d kHz\n", mxc_get_clock(MXC_ESDHC2_CLK) / 1000); - printf("I2C4 %8d kHz\n", mxc_get_clock(MXC_I2C_CLK) / 1000); - - addr = (u32) clock_init; - printf("[%s] addr = 0x%08X\r\n", __func__, addr); - scg_a7_info(); - - return 0; -} - -U_BOOT_CMD( - clocks, CONFIG_SYS_MAXARGS, 1, do_mx7_showclocks, - "display clocks", - "" -); |