171ebb335SRajeshwari Birje /* 271ebb335SRajeshwari Birje * (C) Copyright 2013 SAMSUNG Electronics 371ebb335SRajeshwari Birje * Rajeshwari Shinde <rajeshwari.s@samsung.com> 471ebb335SRajeshwari Birje * 571ebb335SRajeshwari Birje * SPDX-License-Identifier: GPL-2.0+ 671ebb335SRajeshwari Birje */ 771ebb335SRajeshwari Birje 871ebb335SRajeshwari Birje #include <common.h> 971ebb335SRajeshwari Birje #include <cros_ec.h> 1071ebb335SRajeshwari Birje #include <errno.h> 1171ebb335SRajeshwari Birje #include <fdtdec.h> 1271ebb335SRajeshwari Birje #include <spi.h> 1371ebb335SRajeshwari Birje #include <tmu.h> 1471ebb335SRajeshwari Birje #include <netdev.h> 1571ebb335SRajeshwari Birje #include <asm/io.h> 16903fd795SSimon Glass #include <asm/gpio.h> 1771ebb335SRajeshwari Birje #include <asm/arch/board.h> 1871ebb335SRajeshwari Birje #include <asm/arch/cpu.h> 1971ebb335SRajeshwari Birje #include <asm/arch/dwmmc.h> 2071ebb335SRajeshwari Birje #include <asm/arch/mmc.h> 2171ebb335SRajeshwari Birje #include <asm/arch/pinmux.h> 2271ebb335SRajeshwari Birje #include <asm/arch/power.h> 23f0017175SAjay Kumar #include <asm/arch/system.h> 2471ebb335SRajeshwari Birje #include <power/pmic.h> 2571ebb335SRajeshwari Birje #include <asm/arch/sromc.h> 26431a1c56SPiotr Wilczek #include <lcd.h> 27431a1c56SPiotr Wilczek #include <samsung/misc.h> 2871ebb335SRajeshwari Birje 2971ebb335SRajeshwari Birje DECLARE_GLOBAL_DATA_PTR; 3071ebb335SRajeshwari Birje 31e7e60c13SJeroen Hofstee __weak int exynos_early_init_f(void) 328e5e1e6aSPiotr Wilczek { 338e5e1e6aSPiotr Wilczek return 0; 348e5e1e6aSPiotr Wilczek } 358e5e1e6aSPiotr Wilczek 36e7e60c13SJeroen Hofstee __weak int exynos_power_init(void) 378e5e1e6aSPiotr Wilczek { 388e5e1e6aSPiotr Wilczek return 0; 398e5e1e6aSPiotr Wilczek } 408e5e1e6aSPiotr Wilczek 4171ebb335SRajeshwari Birje #if defined CONFIG_EXYNOS_TMU 4271ebb335SRajeshwari Birje /* Boot Time Thermal Analysis for SoC temperature threshold breach */ 4371ebb335SRajeshwari Birje static void boot_temp_check(void) 4471ebb335SRajeshwari Birje { 4571ebb335SRajeshwari Birje int temp; 4671ebb335SRajeshwari Birje 4771ebb335SRajeshwari Birje switch (tmu_monitor(&temp)) { 4871ebb335SRajeshwari Birje case TMU_STATUS_NORMAL: 4971ebb335SRajeshwari Birje break; 5071ebb335SRajeshwari Birje case TMU_STATUS_TRIPPED: 5171ebb335SRajeshwari Birje /* 5271ebb335SRajeshwari Birje * Status TRIPPED ans WARNING means corresponding threshold 5371ebb335SRajeshwari Birje * breach 5471ebb335SRajeshwari Birje */ 5571ebb335SRajeshwari Birje puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n"); 5671ebb335SRajeshwari Birje set_ps_hold_ctrl(); 5771ebb335SRajeshwari Birje hang(); 5871ebb335SRajeshwari Birje break; 5971ebb335SRajeshwari Birje case TMU_STATUS_WARNING: 6071ebb335SRajeshwari Birje puts("EXYNOS_TMU: WARNING! Temperature very high\n"); 6171ebb335SRajeshwari Birje break; 6271ebb335SRajeshwari Birje case TMU_STATUS_INIT: 6371ebb335SRajeshwari Birje /* 6471ebb335SRajeshwari Birje * TMU_STATUS_INIT means something is wrong with temperature 6571ebb335SRajeshwari Birje * sensing and TMU status was changed back from NORMAL to INIT. 6671ebb335SRajeshwari Birje */ 6771ebb335SRajeshwari Birje puts("EXYNOS_TMU: WARNING! Temperature sensing not done\n"); 6871ebb335SRajeshwari Birje break; 6971ebb335SRajeshwari Birje default: 7071ebb335SRajeshwari Birje debug("EXYNOS_TMU: Unknown TMU state\n"); 7171ebb335SRajeshwari Birje } 7271ebb335SRajeshwari Birje } 7371ebb335SRajeshwari Birje #endif 7471ebb335SRajeshwari Birje 7571ebb335SRajeshwari Birje int board_init(void) 7671ebb335SRajeshwari Birje { 7771ebb335SRajeshwari Birje gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL); 7871ebb335SRajeshwari Birje #if defined CONFIG_EXYNOS_TMU 7971ebb335SRajeshwari Birje if (tmu_init(gd->fdt_blob) != TMU_STATUS_NORMAL) { 8071ebb335SRajeshwari Birje debug("%s: Failed to init TMU\n", __func__); 8171ebb335SRajeshwari Birje return -1; 8271ebb335SRajeshwari Birje } 8371ebb335SRajeshwari Birje boot_temp_check(); 8471ebb335SRajeshwari Birje #endif 8571ebb335SRajeshwari Birje 8671ebb335SRajeshwari Birje return exynos_init(); 8771ebb335SRajeshwari Birje } 8871ebb335SRajeshwari Birje 8971ebb335SRajeshwari Birje int dram_init(void) 9071ebb335SRajeshwari Birje { 91*c8b71a35SŁukasz Majewski unsigned int i; 9271ebb335SRajeshwari Birje u32 addr; 9371ebb335SRajeshwari Birje 9471ebb335SRajeshwari Birje for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 9571ebb335SRajeshwari Birje addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE); 9671ebb335SRajeshwari Birje gd->ram_size += get_ram_size((long *)addr, SDRAM_BANK_SIZE); 9771ebb335SRajeshwari Birje } 9871ebb335SRajeshwari Birje return 0; 9971ebb335SRajeshwari Birje } 10071ebb335SRajeshwari Birje 10171ebb335SRajeshwari Birje void dram_init_banksize(void) 10271ebb335SRajeshwari Birje { 103*c8b71a35SŁukasz Majewski unsigned int i; 10471ebb335SRajeshwari Birje u32 addr, size; 10571ebb335SRajeshwari Birje 10671ebb335SRajeshwari Birje for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 10771ebb335SRajeshwari Birje addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE); 10871ebb335SRajeshwari Birje size = get_ram_size((long *)addr, SDRAM_BANK_SIZE); 10971ebb335SRajeshwari Birje 11071ebb335SRajeshwari Birje gd->bd->bi_dram[i].start = addr; 11171ebb335SRajeshwari Birje gd->bd->bi_dram[i].size = size; 11271ebb335SRajeshwari Birje } 11371ebb335SRajeshwari Birje } 11471ebb335SRajeshwari Birje 11571ebb335SRajeshwari Birje static int board_uart_init(void) 11671ebb335SRajeshwari Birje { 11771ebb335SRajeshwari Birje int err, uart_id, ret = 0; 11871ebb335SRajeshwari Birje 11971ebb335SRajeshwari Birje for (uart_id = PERIPH_ID_UART0; uart_id <= PERIPH_ID_UART3; uart_id++) { 12071ebb335SRajeshwari Birje err = exynos_pinmux_config(uart_id, PINMUX_FLAG_NONE); 12171ebb335SRajeshwari Birje if (err) { 12271ebb335SRajeshwari Birje debug("UART%d not configured\n", 12371ebb335SRajeshwari Birje (uart_id - PERIPH_ID_UART0)); 12471ebb335SRajeshwari Birje ret |= err; 12571ebb335SRajeshwari Birje } 12671ebb335SRajeshwari Birje } 12771ebb335SRajeshwari Birje return ret; 12871ebb335SRajeshwari Birje } 12971ebb335SRajeshwari Birje 13071ebb335SRajeshwari Birje #ifdef CONFIG_BOARD_EARLY_INIT_F 13171ebb335SRajeshwari Birje int board_early_init_f(void) 13271ebb335SRajeshwari Birje { 13371ebb335SRajeshwari Birje int err; 134d50c41efSPrzemyslaw Marczak #ifdef CONFIG_BOARD_TYPES 135d50c41efSPrzemyslaw Marczak set_board_type(); 136d50c41efSPrzemyslaw Marczak #endif 13771ebb335SRajeshwari Birje err = board_uart_init(); 13871ebb335SRajeshwari Birje if (err) { 13971ebb335SRajeshwari Birje debug("UART init failed\n"); 14071ebb335SRajeshwari Birje return err; 14171ebb335SRajeshwari Birje } 14271ebb335SRajeshwari Birje 14371ebb335SRajeshwari Birje #ifdef CONFIG_SYS_I2C_INIT_BOARD 14471ebb335SRajeshwari Birje board_i2c_init(gd->fdt_blob); 14571ebb335SRajeshwari Birje #endif 146f0017175SAjay Kumar 147f0017175SAjay Kumar #if defined(CONFIG_OF_CONTROL) && defined(CONFIG_EXYNOS_FB) 148f0017175SAjay Kumar /* 149f0017175SAjay Kumar * board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs 150f0017175SAjay Kumar * panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix, to reserve 151f0017175SAjay Kumar * FB memory at a very early stage. So, we need to fill panel_info.vl_col, 152f0017175SAjay Kumar * panel_info.vl_row and panel_info.vl_bpix before lcd_setmem() is called. 153f0017175SAjay Kumar */ 154f0017175SAjay Kumar err = exynos_lcd_early_init(gd->fdt_blob); 155f0017175SAjay Kumar if (err) { 156f0017175SAjay Kumar debug("LCD early init failed\n"); 157f0017175SAjay Kumar return err; 158f0017175SAjay Kumar } 159f0017175SAjay Kumar #endif 160f0017175SAjay Kumar 1618e5e1e6aSPiotr Wilczek return exynos_early_init_f(); 16271ebb335SRajeshwari Birje } 16371ebb335SRajeshwari Birje #endif 16471ebb335SRajeshwari Birje 16571ebb335SRajeshwari Birje #if defined(CONFIG_POWER) 16671ebb335SRajeshwari Birje int power_init_board(void) 16771ebb335SRajeshwari Birje { 16871ebb335SRajeshwari Birje set_ps_hold_ctrl(); 16971ebb335SRajeshwari Birje 1708e5e1e6aSPiotr Wilczek return exynos_power_init(); 17171ebb335SRajeshwari Birje } 17271ebb335SRajeshwari Birje #endif 17371ebb335SRajeshwari Birje 17471ebb335SRajeshwari Birje #ifdef CONFIG_OF_CONTROL 175431a1c56SPiotr Wilczek #ifdef CONFIG_SMC911X 17671ebb335SRajeshwari Birje static int decode_sromc(const void *blob, struct fdt_sromc *config) 17771ebb335SRajeshwari Birje { 17871ebb335SRajeshwari Birje int err; 17971ebb335SRajeshwari Birje int node; 18071ebb335SRajeshwari Birje 18171ebb335SRajeshwari Birje node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC); 18271ebb335SRajeshwari Birje if (node < 0) { 18371ebb335SRajeshwari Birje debug("Could not find SROMC node\n"); 18471ebb335SRajeshwari Birje return node; 18571ebb335SRajeshwari Birje } 18671ebb335SRajeshwari Birje 18771ebb335SRajeshwari Birje config->bank = fdtdec_get_int(blob, node, "bank", 0); 18871ebb335SRajeshwari Birje config->width = fdtdec_get_int(blob, node, "width", 2); 18971ebb335SRajeshwari Birje 19071ebb335SRajeshwari Birje err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing, 19171ebb335SRajeshwari Birje FDT_SROM_TIMING_COUNT); 19271ebb335SRajeshwari Birje if (err < 0) { 19371ebb335SRajeshwari Birje debug("Could not decode SROMC configuration Error: %s\n", 19471ebb335SRajeshwari Birje fdt_strerror(err)); 19571ebb335SRajeshwari Birje return -FDT_ERR_NOTFOUND; 19671ebb335SRajeshwari Birje } 19771ebb335SRajeshwari Birje return 0; 19871ebb335SRajeshwari Birje } 199431a1c56SPiotr Wilczek #endif 20071ebb335SRajeshwari Birje 20171ebb335SRajeshwari Birje int board_eth_init(bd_t *bis) 20271ebb335SRajeshwari Birje { 20371ebb335SRajeshwari Birje #ifdef CONFIG_SMC911X 20471ebb335SRajeshwari Birje u32 smc_bw_conf, smc_bc_conf; 20571ebb335SRajeshwari Birje struct fdt_sromc config; 20671ebb335SRajeshwari Birje fdt_addr_t base_addr; 20771ebb335SRajeshwari Birje int node; 20871ebb335SRajeshwari Birje 20971ebb335SRajeshwari Birje node = decode_sromc(gd->fdt_blob, &config); 21071ebb335SRajeshwari Birje if (node < 0) { 21171ebb335SRajeshwari Birje debug("%s: Could not find sromc configuration\n", __func__); 21271ebb335SRajeshwari Birje return 0; 21371ebb335SRajeshwari Birje } 21471ebb335SRajeshwari Birje node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215); 21571ebb335SRajeshwari Birje if (node < 0) { 21671ebb335SRajeshwari Birje debug("%s: Could not find lan9215 configuration\n", __func__); 21771ebb335SRajeshwari Birje return 0; 21871ebb335SRajeshwari Birje } 21971ebb335SRajeshwari Birje 22071ebb335SRajeshwari Birje /* We now have a node, so any problems from now on are errors */ 22171ebb335SRajeshwari Birje base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg"); 22271ebb335SRajeshwari Birje if (base_addr == FDT_ADDR_T_NONE) { 22371ebb335SRajeshwari Birje debug("%s: Could not find lan9215 address\n", __func__); 22471ebb335SRajeshwari Birje return -1; 22571ebb335SRajeshwari Birje } 22671ebb335SRajeshwari Birje 22771ebb335SRajeshwari Birje /* Ethernet needs data bus width of 16 bits */ 22871ebb335SRajeshwari Birje if (config.width != 2) { 22971ebb335SRajeshwari Birje debug("%s: Unsupported bus width %d\n", __func__, 23071ebb335SRajeshwari Birje config.width); 23171ebb335SRajeshwari Birje return -1; 23271ebb335SRajeshwari Birje } 23371ebb335SRajeshwari Birje smc_bw_conf = SROMC_DATA16_WIDTH(config.bank) 23471ebb335SRajeshwari Birje | SROMC_BYTE_ENABLE(config.bank); 23571ebb335SRajeshwari Birje 23671ebb335SRajeshwari Birje smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS]) | 23771ebb335SRajeshwari Birje SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) | 23871ebb335SRajeshwari Birje SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) | 23971ebb335SRajeshwari Birje SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) | 24071ebb335SRajeshwari Birje SROMC_BC_TAH(config.timing[FDT_SROM_TAH]) | 24171ebb335SRajeshwari Birje SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) | 24271ebb335SRajeshwari Birje SROMC_BC_PMC(config.timing[FDT_SROM_PMC]); 24371ebb335SRajeshwari Birje 24471ebb335SRajeshwari Birje /* Select and configure the SROMC bank */ 24571ebb335SRajeshwari Birje exynos_pinmux_config(PERIPH_ID_SROMC, config.bank); 24671ebb335SRajeshwari Birje s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf); 24771ebb335SRajeshwari Birje return smc911x_initialize(0, base_addr); 24871ebb335SRajeshwari Birje #endif 24971ebb335SRajeshwari Birje return 0; 25071ebb335SRajeshwari Birje } 25171ebb335SRajeshwari Birje 25271ebb335SRajeshwari Birje #ifdef CONFIG_GENERIC_MMC 25333a4fcf6SPrzemyslaw Marczak static int init_mmc(void) 25433a4fcf6SPrzemyslaw Marczak { 25533a4fcf6SPrzemyslaw Marczak #ifdef CONFIG_SDHCI 25633a4fcf6SPrzemyslaw Marczak return exynos_mmc_init(gd->fdt_blob); 25733a4fcf6SPrzemyslaw Marczak #else 25833a4fcf6SPrzemyslaw Marczak return 0; 25933a4fcf6SPrzemyslaw Marczak #endif 26033a4fcf6SPrzemyslaw Marczak } 26133a4fcf6SPrzemyslaw Marczak 26233a4fcf6SPrzemyslaw Marczak static int init_dwmmc(void) 26333a4fcf6SPrzemyslaw Marczak { 26433a4fcf6SPrzemyslaw Marczak #ifdef CONFIG_DWMMC 26533a4fcf6SPrzemyslaw Marczak return exynos_dwmmc_init(gd->fdt_blob); 26633a4fcf6SPrzemyslaw Marczak #else 26733a4fcf6SPrzemyslaw Marczak return 0; 26833a4fcf6SPrzemyslaw Marczak #endif 26933a4fcf6SPrzemyslaw Marczak } 27033a4fcf6SPrzemyslaw Marczak 27171ebb335SRajeshwari Birje int board_mmc_init(bd_t *bis) 27271ebb335SRajeshwari Birje { 27371ebb335SRajeshwari Birje int ret; 27471ebb335SRajeshwari Birje 27533a4fcf6SPrzemyslaw Marczak if (get_boot_mode() == BOOT_MODE_SD) { 27633a4fcf6SPrzemyslaw Marczak ret = init_mmc(); 27733a4fcf6SPrzemyslaw Marczak ret |= init_dwmmc(); 27833a4fcf6SPrzemyslaw Marczak } else { 27933a4fcf6SPrzemyslaw Marczak ret = init_dwmmc(); 28033a4fcf6SPrzemyslaw Marczak ret |= init_mmc(); 28133a4fcf6SPrzemyslaw Marczak } 28233a4fcf6SPrzemyslaw Marczak 28358209dfaSJaehoon Chung if (ret) 28458209dfaSJaehoon Chung debug("mmc init failed\n"); 28533a4fcf6SPrzemyslaw Marczak 28671ebb335SRajeshwari Birje return ret; 28771ebb335SRajeshwari Birje } 28871ebb335SRajeshwari Birje #endif 2894c1dd998SPiotr Wilczek 2904c1dd998SPiotr Wilczek #ifdef CONFIG_DISPLAY_BOARDINFO 2914c1dd998SPiotr Wilczek int checkboard(void) 2924c1dd998SPiotr Wilczek { 293d50c41efSPrzemyslaw Marczak const char *board_info; 2944c1dd998SPiotr Wilczek 295d50c41efSPrzemyslaw Marczak board_info = fdt_getprop(gd->fdt_blob, 0, "model", NULL); 296d50c41efSPrzemyslaw Marczak printf("Board: %s\n", board_info ? board_info : "unknown"); 297d50c41efSPrzemyslaw Marczak #ifdef CONFIG_BOARD_TYPES 298d50c41efSPrzemyslaw Marczak board_info = get_board_type(); 2994c1dd998SPiotr Wilczek 300d50c41efSPrzemyslaw Marczak printf("Model: %s\n", board_info ? board_info : "unknown"); 301d50c41efSPrzemyslaw Marczak #endif 3024c1dd998SPiotr Wilczek return 0; 3034c1dd998SPiotr Wilczek } 30471ebb335SRajeshwari Birje #endif 3054c1dd998SPiotr Wilczek #endif /* CONFIG_OF_CONTROL */ 30671ebb335SRajeshwari Birje 30771ebb335SRajeshwari Birje #ifdef CONFIG_BOARD_LATE_INIT 30871ebb335SRajeshwari Birje int board_late_init(void) 30971ebb335SRajeshwari Birje { 31071ebb335SRajeshwari Birje stdio_print_current_devices(); 31171ebb335SRajeshwari Birje 31241364f0fSVadim Bendebury if (cros_ec_get_error()) { 31371ebb335SRajeshwari Birje /* Force console on */ 31471ebb335SRajeshwari Birje gd->flags &= ~GD_FLG_SILENT; 31571ebb335SRajeshwari Birje 31671ebb335SRajeshwari Birje printf("cros-ec communications failure %d\n", 31741364f0fSVadim Bendebury cros_ec_get_error()); 31871ebb335SRajeshwari Birje puts("\nPlease reset with Power+Refresh\n\n"); 31971ebb335SRajeshwari Birje panic("Cannot init cros-ec device"); 32071ebb335SRajeshwari Birje return -1; 32171ebb335SRajeshwari Birje } 32271ebb335SRajeshwari Birje return 0; 32371ebb335SRajeshwari Birje } 32471ebb335SRajeshwari Birje #endif 32571ebb335SRajeshwari Birje 32671ebb335SRajeshwari Birje int arch_early_init_r(void) 32771ebb335SRajeshwari Birje { 32871ebb335SRajeshwari Birje #ifdef CONFIG_CROS_EC 32941364f0fSVadim Bendebury if (cros_ec_board_init()) { 33071ebb335SRajeshwari Birje printf("%s: Failed to init EC\n", __func__); 33171ebb335SRajeshwari Birje return 0; 33271ebb335SRajeshwari Birje } 33371ebb335SRajeshwari Birje #endif 33471ebb335SRajeshwari Birje 33571ebb335SRajeshwari Birje return 0; 33671ebb335SRajeshwari Birje } 337431a1c56SPiotr Wilczek 338431a1c56SPiotr Wilczek #ifdef CONFIG_MISC_INIT_R 339431a1c56SPiotr Wilczek int misc_init_r(void) 340431a1c56SPiotr Wilczek { 341431a1c56SPiotr Wilczek #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 342431a1c56SPiotr Wilczek set_board_info(); 343431a1c56SPiotr Wilczek #endif 344431a1c56SPiotr Wilczek #ifdef CONFIG_LCD_MENU 345431a1c56SPiotr Wilczek keys_init(); 346431a1c56SPiotr Wilczek check_boot_mode(); 347431a1c56SPiotr Wilczek #endif 348431a1c56SPiotr Wilczek #ifdef CONFIG_CMD_BMP 349431a1c56SPiotr Wilczek if (panel_info.logo_on) 350431a1c56SPiotr Wilczek draw_logo(); 351431a1c56SPiotr Wilczek #endif 352431a1c56SPiotr Wilczek return 0; 353431a1c56SPiotr Wilczek } 354431a1c56SPiotr Wilczek #endif 355aa8e00faSJoonyoung Shim 356aa8e00faSJoonyoung Shim void reset_misc(void) 357aa8e00faSJoonyoung Shim { 358aa8e00faSJoonyoung Shim struct gpio_desc gpio = {}; 359aa8e00faSJoonyoung Shim int node; 360aa8e00faSJoonyoung Shim 361aa8e00faSJoonyoung Shim node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, 362aa8e00faSJoonyoung Shim "samsung,emmc-reset"); 363aa8e00faSJoonyoung Shim if (node < 0) 364aa8e00faSJoonyoung Shim return; 365aa8e00faSJoonyoung Shim 366aa8e00faSJoonyoung Shim gpio_request_by_name_nodev(gd->fdt_blob, node, "reset-gpio", 0, &gpio, 367aa8e00faSJoonyoung Shim GPIOD_IS_OUT); 368aa8e00faSJoonyoung Shim 369aa8e00faSJoonyoung Shim if (dm_gpio_is_valid(&gpio)) { 370aa8e00faSJoonyoung Shim /* 371aa8e00faSJoonyoung Shim * Reset eMMC 372aa8e00faSJoonyoung Shim * 373aa8e00faSJoonyoung Shim * FIXME: Need to optimize delay time. Minimum 1usec pulse is 374aa8e00faSJoonyoung Shim * required by 'JEDEC Standard No.84-A441' (eMMC) 375aa8e00faSJoonyoung Shim * document but real delay time is expected to greater 376aa8e00faSJoonyoung Shim * than 1usec. 377aa8e00faSJoonyoung Shim */ 378aa8e00faSJoonyoung Shim dm_gpio_set_value(&gpio, 0); 379aa8e00faSJoonyoung Shim mdelay(10); 380aa8e00faSJoonyoung Shim dm_gpio_set_value(&gpio, 1); 381aa8e00faSJoonyoung Shim } 382aa8e00faSJoonyoung Shim } 383