19 files changed, 227 insertions, 121 deletions

diff --git a/board/buffalo/lsxl/lsxl.c b/board/buffalo/lsxl/lsxl.c
index 659a124b22..c1cb07b278 100644
--- a/board/buffalo/lsxl/lsxl.c
+++ b/board/buffalo/lsxl/lsxl.c
@@ -13,11 +13,12 @@
 #include <malloc.h>
 #include <netdev.h>
 #include <miiphy.h>
+#include <spi.h>
+#include <spi_flash.h>
 #include <asm/arch/kirkwood.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/mpp.h>
 #include <asm/arch/gpio.h>
-#include <spi_flash.h>
 
 #include "lsxl.h"
 
diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c
index fdb8ebf9e7..f77ff48a1c 100644
--- a/board/compulab/cm_fx6/cm_fx6.c
+++ b/board/compulab/cm_fx6/cm_fx6.c
@@ -9,11 +9,13 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <fsl_esdhc.h>
 #include <miiphy.h>
 #include <netdev.h>
 #include <fdt_support.h>
 #include <sata.h>
+#include <serial_mxc.h>
 #include <asm/arch/crm_regs.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/iomux.h>
@@ -69,16 +71,23 @@ static iomux_v3_cfg_t const sata_pads[] = {
 	IOMUX_PADS(PAD_EIM_BCLK__GPIO6_IO31   | MUX_PAD_CTRL(NO_PAD_CTRL)),
 };
 
-static void cm_fx6_setup_issd(void)
+static int cm_fx6_setup_issd(void)
 {
+	int ret, i;
+
 	SETUP_IOMUX_PADS(sata_pads);
-	/* Make sure this gpio has logical 0 value */
-	gpio_direction_output(CM_FX6_SATA_PWLOSS_INT, 0);
-	udelay(100);
 
-	cm_fx6_sata_power(0);
-	mdelay(250);
-	cm_fx6_sata_power(1);
+	for (i = 0; i < ARRAY_SIZE(cm_fx6_issd_gpios); i++) {
+		ret = gpio_request(cm_fx6_issd_gpios[i], "sata");
+		if (ret)
+			return ret;
+	}
+
+	ret = gpio_request(CM_FX6_SATA_PWLOSS_INT, "sata_pwloss_int");
+	if (ret)
+		return ret;
+
+	return 0;
 }
 
 #define CM_FX6_SATA_INIT_RETRIES	10
@@ -86,7 +95,14 @@ int sata_initialize(void)
 {
 	int err, i;
 
-	cm_fx6_setup_issd();
+	/* Make sure this gpio has logical 0 value */
+	gpio_direction_output(CM_FX6_SATA_PWLOSS_INT, 0);
+	udelay(100);
+
+	cm_fx6_sata_power(0);
+	mdelay(250);
+	cm_fx6_sata_power(1);
+
 	for (i = 0; i < CM_FX6_SATA_INIT_RETRIES; i++) {
 		err = setup_sata();
 		if (err) {
@@ -109,6 +125,8 @@ int sata_initialize(void)
 
 	return err;
 }
+#else
+static int cm_fx6_setup_issd(void) { return 0; }
 #endif
 
 #ifdef CONFIG_SYS_I2C_MXC
@@ -141,49 +159,68 @@ I2C_PADS(i2c2_pads,
 	 IMX_GPIO_NR(1, 6));
 
 
-static void cm_fx6_setup_i2c(void)
+static int cm_fx6_setup_one_i2c(int busnum, struct i2c_pads_info *pads)
+{
+	int ret;
+
+	ret = setup_i2c(busnum, CONFIG_SYS_I2C_SPEED, 0x7f, pads);
+	if (ret)
+		printf("Warning: I2C%d setup failed: %d\n", busnum, ret);
+
+	return ret;
+}
+
+static int cm_fx6_setup_i2c(void)
 {
-	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c0_pads));
-	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c1_pads));
-	setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c2_pads));
+	int ret = 0, err;
+
+	/* i2c<x>_pads are wierd macro variables; we can't use an array */
+	err = cm_fx6_setup_one_i2c(0, I2C_PADS_INFO(i2c0_pads));
+	if (err)
+		ret = err;
+	err = cm_fx6_setup_one_i2c(1, I2C_PADS_INFO(i2c1_pads));
+	if (err)
+		ret = err;
+	err = cm_fx6_setup_one_i2c(2, I2C_PADS_INFO(i2c2_pads));
+	if (err)
+		ret = err;
+
+	return ret;
 }
 #else
-static void cm_fx6_setup_i2c(void) { }
+static int cm_fx6_setup_i2c(void) { return 0; }
 #endif
 
 #ifdef CONFIG_USB_EHCI_MX6
 #define WEAK_PULLDOWN	(PAD_CTL_PUS_100K_DOWN |		\
 			PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |	\
 			PAD_CTL_HYS | PAD_CTL_SRE_SLOW)
+#define MX6_USBNC_BASEADDR	0x2184800
+#define USBNC_USB_H1_PWR_POL	(1 << 9)
 
-static int cm_fx6_usb_hub_reset(void)
+static int cm_fx6_setup_usb_host(void)
 {
 	int err;
 
 	err = gpio_request(CM_FX6_USB_HUB_RST, "usb hub rst");
-	if (err) {
-		printf("USB hub rst gpio request failed: %d\n", err);
-		return -1;
-	}
+	if (err)
+		return err;
 
+	SETUP_IOMUX_PAD(PAD_GPIO_0__USB_H1_PWR | MUX_PAD_CTRL(NO_PAD_CTRL));
 	SETUP_IOMUX_PAD(PAD_SD3_RST__GPIO7_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL));
-	gpio_direction_output(CM_FX6_USB_HUB_RST, 0);
-	udelay(10);
-	gpio_direction_output(CM_FX6_USB_HUB_RST, 1);
-	mdelay(1);
 
 	return 0;
 }
 
-static int cm_fx6_init_usb_otg(void)
+static int cm_fx6_setup_usb_otg(void)
 {
-	int ret;
+	int err;
 	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 
-	ret = gpio_request(SB_FX6_USB_OTG_PWR, "usb-pwr");
-	if (ret) {
-		printf("USB OTG pwr gpio request failed: %d\n", ret);
-		return ret;
+	err = gpio_request(SB_FX6_USB_OTG_PWR, "usb-pwr");
+	if (err) {
+		printf("USB OTG pwr gpio request failed: %d\n", err);
+		return err;
 	}
 
 	SETUP_IOMUX_PAD(PAD_EIM_D22__GPIO3_IO22 | MUX_PAD_CTRL(NO_PAD_CTRL));
@@ -194,25 +231,27 @@ static int cm_fx6_init_usb_otg(void)
 	return gpio_direction_output(SB_FX6_USB_OTG_PWR, 0);
 }
 
-#define MX6_USBNC_BASEADDR	0x2184800
-#define USBNC_USB_H1_PWR_POL	(1 << 9)
 int board_ehci_hcd_init(int port)
 {
+	int ret;
 	u32 *usbnc_usb_uh1_ctrl = (u32 *)(MX6_USBNC_BASEADDR + 4);
 
-	switch (port) {
-	case 0:
-		return cm_fx6_init_usb_otg();
-	case 1:
-		SETUP_IOMUX_PAD(PAD_GPIO_0__USB_H1_PWR |
-				MUX_PAD_CTRL(NO_PAD_CTRL));
+	/* Only 1 host controller in use. port 0 is OTG & needs no attention */
+	if (port != 1)
+		return 0;
 
-		/* Set PWR polarity to match power switch's enable polarity */
-		setbits_le32(usbnc_usb_uh1_ctrl, USBNC_USB_H1_PWR_POL);
-		return cm_fx6_usb_hub_reset();
-	default:
-		break;
-	}
+	/* Set PWR polarity to match power switch's enable polarity */
+	setbits_le32(usbnc_usb_uh1_ctrl, USBNC_USB_H1_PWR_POL);
+	ret = gpio_direction_output(CM_FX6_USB_HUB_RST, 0);
+	if (ret)
+		return ret;
+
+	udelay(10);
+	ret = gpio_direction_output(CM_FX6_USB_HUB_RST, 1);
+	if (ret)
+		return ret;
+
+	mdelay(1);
 
 	return 0;
 }
@@ -224,6 +263,9 @@ int board_ehci_power(int port, int on)
 
 	return 0;
 }
+#else
+static int cm_fx6_setup_usb_otg(void) { return 0; }
+static int cm_fx6_setup_usb_host(void) { return 0; }
 #endif
 
 #ifdef CONFIG_FEC_MXC
@@ -318,12 +360,17 @@ static int handle_mac_address(void)
 
 int board_eth_init(bd_t *bis)
 {
-	int res = handle_mac_address();
-	if (res)
+	int err;
+
+	err = handle_mac_address();
+	if (err)
 		puts("No MAC address found\n");
 
 	SETUP_IOMUX_PADS(enet_pads);
 	/* phy reset */
+	err = gpio_request(CM_FX6_ENET_NRST, "enet_nrst");
+	if (err)
+		printf("Etnernet NRST gpio request failed: %d\n", err);
 	gpio_direction_output(CM_FX6_ENET_NRST, 0);
 	udelay(500);
 	gpio_set_value(CM_FX6_ENET_NRST, 1);
@@ -394,6 +441,16 @@ int board_mmc_init(bd_t *bis)
 }
 #endif
 
+#ifdef CONFIG_MXC_SPI
+int cm_fx6_setup_ecspi(void)
+{
+	cm_fx6_set_ecspi_iomux();
+	return gpio_request(CM_FX6_ECSPI_BUS0_CS0, "ecspi_bus0_cs0");
+}
+#else
+int cm_fx6_setup_ecspi(void) { return 0; }
+#endif
+
 #ifdef CONFIG_OF_BOARD_SETUP
 void ft_board_setup(void *blob, bd_t *bd)
 {
@@ -409,9 +466,37 @@ void ft_board_setup(void *blob, bd_t *bd)
 
 int board_init(void)
 {
+	int ret;
+
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 	cm_fx6_setup_gpmi_nand();
-	cm_fx6_setup_i2c();
+
+	ret = cm_fx6_setup_ecspi();
+	if (ret)
+		printf("Warning: ECSPI setup failed: %d\n", ret);
+
+	ret = cm_fx6_setup_usb_otg();
+	if (ret)
+		printf("Warning: USB OTG setup failed: %d\n", ret);
+
+	ret = cm_fx6_setup_usb_host();
+	if (ret)
+		printf("Warning: USB host setup failed: %d\n", ret);
+
+	/*
+	 * cm-fx6 may have iSSD not assembled and in this case it has
+	 * bypasses for a (m)SATA socket on the baseboard. The socketed
+	 * device is not controlled by those GPIOs. So just print a warning
+	 * if the setup fails.
+	 */
+	ret = cm_fx6_setup_issd();
+	if (ret)
+		printf("Warning: iSSD setup failed: %d\n", ret);
+
+	/* Warn on failure but do not abort boot */
+	ret = cm_fx6_setup_i2c();
+	if (ret)
+		printf("Warning: I2C setup failed: %d\n", ret);
 
 	return 0;
 }
@@ -481,3 +566,11 @@ u32 get_board_rev(void)
 	return cl_eeprom_get_board_rev();
 }
 
+static struct mxc_serial_platdata cm_fx6_mxc_serial_plat = {
+	.reg = (struct mxc_uart *)UART4_BASE,
+};
+
+U_BOOT_DEVICE(cm_fx6_serial) = {
+	.name	= "serial_mxc",
+	.platdata = &cm_fx6_mxc_serial_plat,
+};
diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c
index d01abcee13..03f055dad2 100644
--- a/board/nvidia/common/board.c
+++ b/board/nvidia/common/board.c
@@ -114,9 +114,8 @@ int board_init(void)
 	clock_init();
 	clock_verify();
 
-#ifdef CONFIG_FDT_SPI
+#ifdef CONFIG_TEGRA_SPI
 	pin_mux_spi();
-	spi_init();
 #endif
 
 #ifdef CONFIG_PWM_TEGRA
diff --git a/board/raspberrypi/rpi_b/rpi_b.c b/board/raspberrypi/rpi_b/rpi_b.c
index 220bb90dc1..447c940f63 100644
--- a/board/raspberrypi/rpi_b/rpi_b.c
+++ b/board/raspberrypi/rpi_b/rpi_b.c
@@ -16,15 +16,26 @@
 
 #include <common.h>
 #include <config.h>
+#include <dm.h>
 #include <fdt_support.h>
 #include <lcd.h>
 #include <mmc.h>
+#include <asm/gpio.h>
 #include <asm/arch/mbox.h>
 #include <asm/arch/sdhci.h>
 #include <asm/global_data.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+static const struct bcm2835_gpio_platdata gpio_platdata = {
+	.base = BCM2835_GPIO_BASE,
+};
+
+U_BOOT_DEVICE(bcm2835_gpios) = {
+	.name = "gpio_bcm2835",
+	.platdata = &gpio_platdata,
+};
+
 struct msg_get_arm_mem {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
diff --git a/board/renesas/sh7752evb/sh7752evb.c b/board/renesas/sh7752evb/sh7752evb.c
index 5eedbf8ce6..3aad532367 100644
--- a/board/renesas/sh7752evb/sh7752evb.c
+++ b/board/renesas/sh7752evb/sh7752evb.c
@@ -9,6 +9,7 @@
 #include <asm/processor.h>
 #include <asm/io.h>
 #include <asm/mmc.h>
+#include <spi.h>
 #include <spi_flash.h>
 
 int checkboard(void)
diff --git a/board/renesas/sh7753evb/sh7753evb.c b/board/renesas/sh7753evb/sh7753evb.c
index 42b920fb33..9f6494561c 100644
--- a/board/renesas/sh7753evb/sh7753evb.c
+++ b/board/renesas/sh7753evb/sh7753evb.c
@@ -9,6 +9,7 @@
 #include <asm/processor.h>
 #include <asm/io.h>
 #include <asm/mmc.h>
+#include <spi.h>
 #include <spi_flash.h>
 
 int checkboard(void)
diff --git a/board/renesas/sh7757lcr/sh7757lcr.c b/board/renesas/sh7757lcr/sh7757lcr.c
index 1464f48b43..ddcf275f6e 100644
--- a/board/renesas/sh7757lcr/sh7757lcr.c
+++ b/board/renesas/sh7757lcr/sh7757lcr.c
@@ -9,6 +9,7 @@
 #include <asm/processor.h>
 #include <asm/io.h>
 #include <asm/mmc.h>
+#include <spi.h>
 #include <spi_flash.h>
 
 int checkboard(void)
diff --git a/board/samsung/arndale/arndale.c b/board/samsung/arndale/arndale.c
index 83fd3bd754..881d080522 100644
--- a/board/samsung/arndale/arndale.c
+++ b/board/samsung/arndale/arndale.c
@@ -6,9 +6,9 @@
 
 #include <common.h>
 #include <usb.h>
+#include <asm/gpio.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/dwmmc.h>
-#include <asm/arch/gpio.h>
 #include <asm/arch/power.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -19,6 +19,8 @@ int board_usb_init(int index, enum usb_init_type init)
 	/* Configure gpios for usb 3503 hub:
 	 * disconnect, toggle reset and connect
 	 */
+	gpio_request(EXYNOS5_GPIO_D17, "usb_connect");
+	gpio_request(EXYNOS5_GPIO_X35, "usb_reset");
 	gpio_direction_output(EXYNOS5_GPIO_D17, 0);
 	gpio_direction_output(EXYNOS5_GPIO_X35, 0);
 
diff --git a/board/samsung/common/board.c b/board/samsung/common/board.c
index 5c3c5bb925..e1fc123fcc 100644
--- a/board/samsung/common/board.c
+++ b/board/samsung/common/board.c
@@ -13,10 +13,10 @@
 #include <tmu.h>
 #include <netdev.h>
 #include <asm/io.h>
+#include <asm/gpio.h>
 #include <asm/arch/board.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/dwmmc.h>
-#include <asm/arch/gpio.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/power.h>
@@ -87,9 +87,6 @@ int board_init(void)
 	boot_temp_check();
 #endif
 
-#ifdef CONFIG_EXYNOS_SPI
-	spi_init();
-#endif
 	return exynos_init();
 }
 
diff --git a/board/samsung/common/misc.c b/board/samsung/common/misc.c
index 8766f0ca06..4538ac7f2a 100644
--- a/board/samsung/common/misc.c
+++ b/board/samsung/common/misc.c
@@ -14,7 +14,6 @@
 #include <malloc.h>
 #include <linux/sizes.h>
 #include <asm/arch/cpu.h>
-#include <asm/arch/gpio.h>
 #include <asm/gpio.h>
 #include <linux/input.h>
 #include <power/pmic.h>
@@ -412,6 +411,8 @@ void check_boot_mode(void)
 void keys_init(void)
 {
 	/* Set direction to input */
+	gpio_request(KEY_VOL_UP_GPIO, "volume-up");
+	gpio_request(KEY_VOL_DOWN_GPIO, "volume-down");
 	gpio_direction_input(KEY_VOL_UP_GPIO);
 	gpio_direction_input(KEY_VOL_DOWN_GPIO);
 }
diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
index eb0f9bffae..58cf96eaa8 100644
--- a/board/samsung/goni/goni.c
+++ b/board/samsung/goni/goni.c
@@ -7,7 +7,7 @@
  */
 
 #include <common.h>
-#include <asm/arch/gpio.h>
+#include <asm/gpio.h>
 #include <asm/arch/mmc.h>
 #include <power/pmic.h>
 #include <usb/s3c_udc.h>
@@ -33,6 +33,16 @@ int board_init(void)
 	return 0;
 }
 
+#ifdef CONFIG_SYS_I2C_INIT_BOARD
+void i2c_init_board(void)
+{
+	gpio_request(S5PC110_GPIO_J43, "i2c_clk");
+	gpio_request(S5PC110_GPIO_J40, "i2c_data");
+	gpio_direction_output(S5PC110_GPIO_J43, 1);
+	gpio_direction_output(S5PC110_GPIO_J40, 1);
+}
+#endif
+
 int power_init_board(void)
 {
 	int ret;
@@ -80,6 +90,7 @@ int board_mmc_init(bd_t *bis)
 	int i, ret, ret_sd = 0;
 
 	/* MASSMEMORY_EN: XMSMDATA7: GPJ2[7] output high */
+	gpio_request(S5PC110_GPIO_J27, "massmemory_en");
 	gpio_direction_output(S5PC110_GPIO_J27, 1);
 
 	/*
@@ -108,6 +119,7 @@ int board_mmc_init(bd_t *bis)
 	 * SD card (T_FLASH) detect and init
 	 * T_FLASH_DETECT: EINT28: GPH3[4] input mode
 	 */
+	gpio_request(S5PC110_GPIO_H34, "t_flash_detect");
 	gpio_cfg_pin(S5PC110_GPIO_H34, S5P_GPIO_INPUT);
 	gpio_set_pull(S5PC110_GPIO_H34, S5P_GPIO_PULL_UP);
 
diff --git a/board/samsung/origen/origen.c b/board/samsung/origen/origen.c
index a539267a1c..99a2facd1e 100644
--- a/board/samsung/origen/origen.c
+++ b/board/samsung/origen/origen.c
@@ -6,8 +6,8 @@
 
 #include <common.h>
 #include <asm/io.h>
+#include <asm/gpio.h>
 #include <asm/arch/cpu.h>
-#include <asm/arch/gpio.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/periph.h>
 #include <asm/arch/pinmux.h>
diff --git a/board/samsung/smdk5250/exynos5-dt.c b/board/samsung/smdk5250/exynos5-dt.c
index d6ce1337b9..53ff7061d7 100644
--- a/board/samsung/smdk5250/exynos5-dt.c
+++ b/board/samsung/smdk5250/exynos5-dt.c
@@ -29,6 +29,7 @@ DECLARE_GLOBAL_DATA_PTR;
 static void board_enable_audio_codec(void)
 {
 	/* Enable MAX98095 Codec */
+	gpio_request(EXYNOS5_GPIO_X17, "max98095_enable");
 	gpio_direction_output(EXYNOS5_GPIO_X17, 1);
 	gpio_set_pull(EXYNOS5_GPIO_X17, S5P_GPIO_PULL_NONE);
 }
@@ -199,16 +200,19 @@ static int board_dp_bridge_setup(void)
 	/* Setup the GPIOs */
 
 	/* PD is ACTIVE_LOW, and initially de-asserted */
+	gpio_request(EXYNOS5_GPIO_Y25, "dp_bridge_pd");
 	gpio_set_pull(EXYNOS5_GPIO_Y25, S5P_GPIO_PULL_NONE);
 	gpio_direction_output(EXYNOS5_GPIO_Y25, 1);
 
 	/* Reset is ACTIVE_LOW */
+	gpio_request(EXYNOS5_GPIO_X15, "dp_bridge_reset");
 	gpio_set_pull(EXYNOS5_GPIO_X15, S5P_GPIO_PULL_NONE);
 	gpio_direction_output(EXYNOS5_GPIO_X15, 0);
 
 	udelay(10);
 	gpio_set_value(EXYNOS5_GPIO_X15, 1);
 
+	gpio_request(EXYNOS5_GPIO_X07, "dp_bridge_hpd");
 	gpio_direction_input(EXYNOS5_GPIO_X07);
 
 	/*
@@ -236,10 +240,12 @@ static int board_dp_bridge_setup(void)
 void exynos_cfg_lcd_gpio(void)
 {
 	/* For Backlight */
+	gpio_request(EXYNOS5_GPIO_B20, "lcd_backlight");
 	gpio_cfg_pin(EXYNOS5_GPIO_B20, S5P_GPIO_OUTPUT);
 	gpio_set_value(EXYNOS5_GPIO_B20, 1);
 
 	/* LCD power on */
+	gpio_request(EXYNOS5_GPIO_X15, "lcd_power");
 	gpio_cfg_pin(EXYNOS5_GPIO_X15, S5P_GPIO_OUTPUT);
 	gpio_set_value(EXYNOS5_GPIO_X15, 1);
 
@@ -276,6 +282,7 @@ void exynos_backlight_on(unsigned int on)
 	mdelay(10);
 
 	/* board_dp_backlight_en */
+	gpio_request(EXYNOS5_GPIO_X30, "board_dp_backlight_en");
 	gpio_direction_output(EXYNOS5_GPIO_X30, 1);
 #endif
 }
diff --git a/board/samsung/smdk5420/smdk5420.c b/board/samsung/smdk5420/smdk5420.c
index 270ee834e6..a691222b8b 100644
--- a/board/samsung/smdk5420/smdk5420.c
+++ b/board/samsung/smdk5420/smdk5420.c
@@ -11,9 +11,9 @@
 #include <lcd.h>
 #include <spi.h>
 #include <errno.h>
+#include <asm/gpio.h>
 #include <asm/arch/board.h>
 #include <asm/arch/cpu.h>
-#include <asm/arch/gpio.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/system.h>
 #include <asm/arch/dp_info.h>
@@ -74,9 +74,12 @@ void exynos_lcd_power_on(void)
 	mdelay(5);
 
 	/* TODO(ajaykumar.rs@samsung.com): Use device tree */
+	gpio_request(EXYNOS5420_GPIO_X35, "edp_slp#");
 	gpio_direction_output(EXYNOS5420_GPIO_X35, 1);	/* EDP_SLP# */
 	mdelay(10);
+	gpio_request(EXYNOS5420_GPIO_Y77, "edp_rst#");
 	gpio_direction_output(EXYNOS5420_GPIO_Y77, 1);	/* EDP_RST# */
+	gpio_request(EXYNOS5420_GPIO_X26, "edp_hpd");
 	gpio_direction_input(EXYNOS5420_GPIO_X26);	/* EDP_HPD */
 	gpio_set_pull(EXYNOS5420_GPIO_X26, S5P_GPIO_PULL_NONE);
 
@@ -88,6 +91,7 @@ void exynos_lcd_power_on(void)
 void exynos_backlight_on(unsigned int onoff)
 {
 	/* For PWM */
+	gpio_request(EXYNOS5420_GPIO_B20, "backlight_on");
 	gpio_cfg_pin(EXYNOS5420_GPIO_B20, S5P_GPIO_FUNC(0x1));
 	gpio_set_value(EXYNOS5420_GPIO_B20, 1);
 
diff --git a/board/samsung/smdkc100/smdkc100.c b/board/samsung/smdkc100/smdkc100.c
index e009564a59..66b6a9801f 100644
--- a/board/samsung/smdkc100/smdkc100.c
+++ b/board/samsung/smdkc100/smdkc100.c
@@ -7,9 +7,9 @@
  */
 
 #include <common.h>
+#include <asm/gpio.h>
 #include <asm/io.h>
 #include <asm/arch/sromc.h>
-#include <asm/arch/gpio.h>
 #include <netdev.h>
 
 DECLARE_GLOBAL_DATA_PTR;
diff --git a/board/samsung/smdkv310/smdkv310.c b/board/samsung/smdkv310/smdkv310.c
index 8eca358981..cb7f9b0ac8 100644
--- a/board/samsung/smdkv310/smdkv310.c
+++ b/board/samsung/smdkv310/smdkv310.c
@@ -5,10 +5,10 @@
  */
 
 #include <common.h>
+#include <asm/gpio.h>
 #include <asm/io.h>
 #include <netdev.h>
 #include <asm/arch/cpu.h>
-#include <asm/arch/gpio.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/periph.h>
 #include <asm/arch/pinmux.h>
diff --git a/board/samsung/trats/trats.c b/board/samsung/trats/trats.c
index 3dd340b7d8..e163e45a58 100644
--- a/board/samsung/trats/trats.c
+++ b/board/samsung/trats/trats.c
@@ -10,8 +10,8 @@
 #include <common.h>
 #include <lcd.h>
 #include <asm/io.h>
+#include <asm/gpio.h>
 #include <asm/arch/cpu.h>
-#include <asm/arch/gpio.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/mipi_dsim.h>
@@ -63,6 +63,8 @@ void i2c_init_board(void)
 	}
 
 	/* I2C_8 -> FG */
+	gpio_request(EXYNOS4_GPIO_Y40, "i2c_clk");
+	gpio_request(EXYNOS4_GPIO_Y41, "i2c_data");
 	gpio_direction_output(EXYNOS4_GPIO_Y40, 1);
 	gpio_direction_output(EXYNOS4_GPIO_Y41, 1);
 }
@@ -346,12 +348,17 @@ int exynos_power_init(void)
 static unsigned int get_hw_revision(void)
 {
 	int hwrev = 0;
+	char str[10];
 	int i;
 
 	/* hw_rev[3:0] == GPE1[3:0] */
-	for (i = EXYNOS4_GPIO_E10; i < EXYNOS4_GPIO_E14; i++) {
-		gpio_cfg_pin(i, S5P_GPIO_INPUT);
-		gpio_set_pull(i, S5P_GPIO_PULL_NONE);
+	for (i = 0; i < 4; i++) {
+		int pin = i + EXYNOS4_GPIO_E10;
+
+		sprintf(str, "hw_rev%d", i);
+		gpio_request(pin, str);
+		gpio_cfg_pin(pin, S5P_GPIO_INPUT);
+		gpio_set_pull(pin, S5P_GPIO_PULL_NONE);
 	}
 
 	udelay(1);
@@ -517,6 +524,7 @@ static void board_power_init(void)
 static void exynos_uart_init(void)
 {
 	/* UART_SEL GPY4[7] (part2) at EXYNOS4 */
+	gpio_request(EXYNOS4_GPIO_Y47, "uart_sel");
 	gpio_set_pull(EXYNOS4_GPIO_Y47, S5P_GPIO_PULL_UP);
 	gpio_direction_output(EXYNOS4_GPIO_Y47, 1);
 }
@@ -534,6 +542,7 @@ int exynos_early_init_f(void)
 
 void exynos_reset_lcd(void)
 {
+	gpio_request(EXYNOS4_GPIO_Y45, "lcd_reset");
 	gpio_direction_output(EXYNOS4_GPIO_Y45, 1);
 	udelay(10000);
 	gpio_direction_output(EXYNOS4_GPIO_Y45, 0);
diff --git a/board/samsung/trats2/trats2.c b/board/samsung/trats2/trats2.c
index fa26e61244..a7377497e5 100644
--- a/board/samsung/trats2/trats2.c
+++ b/board/samsung/trats2/trats2.c
@@ -8,6 +8,7 @@
 
 #include <common.h>
 #include <lcd.h>
+#include <asm/gpio.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/power.h>
 #include <asm/arch/mipi_dsim.h>
@@ -32,6 +33,7 @@ static inline u32 get_model_rev(void);
 static void check_hw_revision(void)
 {
 	int modelrev = 0;
+	char str[12];
 	int i;
 
 	/*
@@ -40,13 +42,22 @@ static void check_hw_revision(void)
 	 * TRM say that it may cause unexcepted state and leakage current.
 	 * and pull-none is only for output function.
 	 */
-	for (i = EXYNOS4X12_GPIO_M10; i < EXYNOS4X12_GPIO_M12; i++)
-		gpio_cfg_pin(i, S5P_GPIO_INPUT);
+	for (i = 0; i < 2; i++) {
+		int pin = i + EXYNOS4X12_GPIO_M10;
+
+		sprintf(str, "model_rev%d", i);
+		gpio_request(pin, str);
+		gpio_cfg_pin(pin, S5P_GPIO_INPUT);
+	}
 
 	/* GPM1[5:2]: HW_REV[3:0] */
-	for (i = EXYNOS4X12_GPIO_M12; i < EXYNOS4X12_GPIO_M16; i++) {
-		gpio_cfg_pin(i, S5P_GPIO_INPUT);
-		gpio_set_pull(i, S5P_GPIO_PULL_NONE);
+	for (i = 0; i < 4; i++) {
+		int pin = i + EXYNOS4X12_GPIO_M12;
+
+		sprintf(str, "hw_rev%d", i);
+		gpio_request(pin, str);
+		gpio_cfg_pin(pin, S5P_GPIO_INPUT);
+		gpio_set_pull(pin, S5P_GPIO_PULL_NONE);
 	}
 
 	/* GPM1[1:0]: MODEL_REV[1:0] */
@@ -102,10 +113,14 @@ static void board_init_i2c(void)
 	}
 
 	/* I2C_8 */
+	gpio_request(EXYNOS4X12_GPIO_F14, "i2c8_clk");
+	gpio_request(EXYNOS4X12_GPIO_F15, "i2c8_data");
 	gpio_direction_output(EXYNOS4X12_GPIO_F14, 1);
 	gpio_direction_output(EXYNOS4X12_GPIO_F15, 1);
 
 	/* I2C_9 */
+	gpio_request(EXYNOS4X12_GPIO_M21, "i2c9_clk");
+	gpio_request(EXYNOS4X12_GPIO_M20, "i2c9_data");
 	gpio_direction_output(EXYNOS4X12_GPIO_M21, 1);
 	gpio_direction_output(EXYNOS4X12_GPIO_M20, 1);
 }
@@ -387,6 +402,7 @@ void exynos_lcd_power_on(void)
 	struct pmic *p = pmic_get("MAX77686_PMIC");
 
 	/* LCD_2.2V_EN: GPC0[1] */
+	gpio_request(EXYNOS4X12_GPIO_C01, "lcd_2v2_en");
 	gpio_set_pull(EXYNOS4X12_GPIO_C01, S5P_GPIO_PULL_UP);
 	gpio_direction_output(EXYNOS4X12_GPIO_C01, 1);
 
@@ -399,6 +415,7 @@ void exynos_lcd_power_on(void)
 void exynos_reset_lcd(void)
 {
 	/* reset lcd */
+	gpio_request(EXYNOS4X12_GPIO_F21, "lcd_reset");
 	gpio_direction_output(EXYNOS4X12_GPIO_F21, 0);
 	udelay(10);
 	gpio_set_value(EXYNOS4X12_GPIO_F21, 1);
diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c
index 47e7f538d6..22b08497cb 100644
--- a/board/samsung/universal_c210/universal.c
+++ b/board/samsung/universal_c210/universal.c
@@ -12,7 +12,6 @@
 #include <asm/io.h>
 #include <asm/gpio.h>
 #include <asm/arch/adc.h>
-#include <asm/arch/gpio.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/watchdog.h>
 #include <ld9040.h>
@@ -202,53 +201,6 @@ int exynos_early_init_f(void)
 	return 0;
 }
 
-#ifdef CONFIG_SOFT_SPI
-static void soft_spi_init(void)
-{
-	gpio_direction_output(CONFIG_SOFT_SPI_GPIO_SCLK,
-		CONFIG_SOFT_SPI_MODE & SPI_CPOL);
-	gpio_direction_output(CONFIG_SOFT_SPI_GPIO_MOSI, 1);
-	gpio_direction_input(CONFIG_SOFT_SPI_GPIO_MISO);
-	gpio_direction_output(CONFIG_SOFT_SPI_GPIO_CS,
-		!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
-}
-
-void spi_cs_activate(struct spi_slave *slave)
-{
-	gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
-		!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
-	SPI_SCL(1);
-	gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
-		CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH);
-}
-
-void spi_cs_deactivate(struct spi_slave *slave)
-{
-	gpio_set_value(CONFIG_SOFT_SPI_GPIO_CS,
-		!(CONFIG_SOFT_SPI_MODE & SPI_CS_HIGH));
-}
-
-int  spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
-	return bus == 0 && cs == 0;
-}
-
-void universal_spi_scl(int bit)
-{
-	gpio_set_value(CONFIG_SOFT_SPI_GPIO_SCLK, bit);
-}
-
-void universal_spi_sda(int bit)
-{
-	gpio_set_value(CONFIG_SOFT_SPI_GPIO_MOSI, bit);
-}
-
-int universal_spi_read(void)
-{
-	return gpio_get_value(CONFIG_SOFT_SPI_GPIO_MISO);
-}
-#endif
-
 static void init_pmic_lcd(void)
 {
 	unsigned char val;
@@ -331,9 +283,8 @@ void exynos_cfg_lcd_gpio(void)
 	}
 
 	/* gpio pad configuration for LCD reset. */
+	gpio_request(EXYNOS4_GPIO_Y45, "lcd_reset");
 	gpio_cfg_pin(EXYNOS4_GPIO_Y45, S5P_GPIO_OUTPUT);
-
-	spi_init();
 }
 
 int mipi_power(void)
@@ -387,6 +338,7 @@ int exynos_init(void)
 		 * you should set it HIGH since it removes the inverter
 		 */
 		/* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
+		gpio_request(EXYNOS4_GPIO_E36, "ldo_en");
 		gpio_direction_output(EXYNOS4_GPIO_E36, 0);
 		break;
 	default:
@@ -395,13 +347,11 @@ int exynos_init(void)
 		 * But set it as HIGH to ensure
 		 */
 		/* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
+		gpio_request(EXYNOS4_GPIO_E13, "massmemory_en");
 		gpio_direction_output(EXYNOS4_GPIO_E13, 1);
 		break;
 	}
 
-#ifdef CONFIG_SOFT_SPI
-	soft_spi_init();
-#endif
 	check_hw_revision();
 	printf("HW Revision:\t0x%x\n", board_rev);