diff options
Diffstat (limited to 'roms/u-boot/board/k+p/kp_imx53/kp_imx53.c')
| -rw-r--r-- | roms/u-boot/board/k+p/kp_imx53/kp_imx53.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/roms/u-boot/board/k+p/kp_imx53/kp_imx53.c b/roms/u-boot/board/k+p/kp_imx53/kp_imx53.c new file mode 100644 index 000000000..cc8118b4a --- /dev/null +++ b/roms/u-boot/board/k+p/kp_imx53/kp_imx53.c @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018 + * Lukasz Majewski, DENX Software Engineering, lukma@denx.de + */ + +#include <common.h> +#include <init.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/crm_regs.h> +#include <asm/arch/clock.h> +#include <asm/arch/iomux-mx53.h> +#include <asm/arch/clock.h> +#include <asm/gpio.h> +#include <env.h> +#include <power/pmic.h> +#include <fsl_pmic.h> +#include <bootstage.h> +#include "kp_id_rev.h" + +#define BOOSTER_OFF IMX_GPIO_NR(2, 23) +#define LCD_BACKLIGHT IMX_GPIO_NR(1, 1) +#define KEY1 IMX_GPIO_NR(2, 26) +#define LED_RED IMX_GPIO_NR(3, 28) + +DECLARE_GLOBAL_DATA_PTR; + +int dram_init(void) +{ + u32 size; + + size = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE); + gd->ram_size = size; + + return 0; +} + +int dram_init_banksize(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; + + return 0; +} + +static int power_init(void) +{ + struct udevice *dev; + int ret; + + ret = pmic_get("mc34708@8", &dev); + if (ret) { + printf("%s: mc34708 not found !\n", __func__); + return ret; + } + + /* Set VDDGP to 1.110V for 800 MHz on SW1 */ + pmic_clrsetbits(dev, REG_SW_0, SWx_VOLT_MASK_MC34708, + SWx_1_110V_MC34708); + + /* Set VCC as 1.30V on SW2 */ + pmic_clrsetbits(dev, REG_SW_1, SWx_VOLT_MASK_MC34708, + SWx_1_300V_MC34708); + + /* Set global reset timer to 4s */ + pmic_clrsetbits(dev, REG_POWER_CTL2, TIMER_MASK_MC34708, + TIMER_4S_MC34708); + + return ret; +} + +static void setup_clocks(void) +{ + int ret; + u32 ref_clk = MXC_HCLK; + /* + * CPU clock set to 800MHz and DDR to 400MHz + */ + ret = mxc_set_clock(ref_clk, 800, MXC_ARM_CLK); + if (ret) + printf("CPU: Switch CPU clock to 800MHZ failed\n"); + + ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK); + ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK); + if (ret) + printf("CPU: Switch DDR clock to 400MHz failed\n"); +} + +static void setup_ups(void) +{ + gpio_request(BOOSTER_OFF, "BOOSTER_OFF"); + gpio_direction_output(BOOSTER_OFF, 0); +} + +int board_early_init_f(void) +{ + return 0; +} + +/* + * Do not overwrite the console + * Use always serial for U-Boot console + */ +int overwrite_console(void) +{ + return 1; +} + +int board_init(void) +{ + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + + return 0; +} + +void board_disable_display(void) +{ + gpio_request(LCD_BACKLIGHT, "LCD_BACKLIGHT"); + gpio_direction_output(LCD_BACKLIGHT, 0); +} + +void board_misc_setup(void) +{ + gpio_request(KEY1, "KEY1_GPIO"); + gpio_direction_input(KEY1); + + if (gpio_get_value(KEY1)) + env_set("key1", "off"); + else + env_set("key1", "on"); +} + +int board_late_init(void) +{ + int ret = 0; + + board_disable_display(); + setup_ups(); + + if (!power_init()) + setup_clocks(); + + ret = read_eeprom(); + if (ret) + printf("Error %d reading EEPROM content!\n", ret); + + show_eeprom(); + read_board_id(); + + board_misc_setup(); + + return ret; +} + +#define GPIO_DR 0x0 +#define GPIO_GDIR 0x4 +#define GPIO_ALT1 0x1 +#define GPIO5_BASE 0x53FDC000 +#define IOMUXC_EIM_WAIT 0x53FA81E4 +/* Green LED: GPIO5_0 */ +#define GPIO_GREEN BIT(0) + +void show_boot_progress(int status) +{ + /* + * This BOOTSTAGE_ID is called at very early stage of execution. DM gpio + * is not yet initialized. + */ + if (status == BOOTSTAGE_ID_START_UBOOT_F) { + /* + * After ROM execution the EIM_WAIT PAD is set as ALT0 + * (according to RM it shall be ALT1 after reset). To use it as + * GPIO we need to set it to ALT1. + */ + setbits_le32(((uint32_t *)(IOMUXC_EIM_WAIT)), GPIO_ALT1); + + /* Configure green LED GPIO pin direction */ + setbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_GDIR)), + GPIO_GREEN); + /* Turn on green LED */ + setbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_DR)), GPIO_GREEN); + } + + /* + * This BOOTSTAGE_ID is called just before handling execution to kernel + * - i.e. gpio subsystem is already initialized + */ + if (status == BOOTSTAGE_ID_BOOTM_HANDOFF) { + /* + * Off green LED - the same approach - i.e. non dm gpio + * (*bits_le32) is used as in the very early stage. + */ + clrbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_DR)), + GPIO_GREEN); + + /* + * On red LED + */ + gpio_request(LED_RED, "LED_RED_ERROR"); + gpio_direction_output(LED_RED, 1); + } +} |