samsung: trats2: add support for new board Trats2

This patch add support for a new Samsung board Trats2.

Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

2 files changed, 547 insertions, 0 deletions

diff --git a/board/samsung/trats2/Makefile b/board/samsung/trats2/Makefile
new file mode 100644
index 00000000000..805fb8191a7
--- /dev/null
+++ b/board/samsung/trats2/Makefile
@@ -0,0 +1,34 @@
+#
+# Copyright (c) 2000 - 2013 Samsung Electronics Co., Ltd. All rights reserved.
+# Sanghee Kim <sh0130.kim@samsung.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).o
+
+COBJS-y	:= trats2.o
+
+SRCS    := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS-y))
+
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+clean:
+	rm -f $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/samsung/trats2/trats2.c b/board/samsung/trats2/trats2.c
new file mode 100644
index 00000000000..d44d825e807
--- /dev/null
+++ b/board/samsung/trats2/trats2.c
@@ -0,0 +1,513 @@
+/*
+ * Copyright (c) 2013 Samsung Electronics Co., Ltd. All rights reserved.
+ * Sanghee Kim <sh0130.kim@samsung.com>
+ * Piotr Wilczek <p.wilczek@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <lcd.h>
+#include <asm/io.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/power.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/mipi_dsim.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/power.h>
+#include <power/pmic.h>
+#include <power/max77686_pmic.h>
+#include <power/battery.h>
+#include <power/max77693_pmic.h>
+#include <power/max77693_muic.h>
+#include <power/max77693_fg.h>
+#include <libtizen.h>
+#include <errno.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct exynos4x12_gpio_part1 *gpio1;
+static struct exynos4x12_gpio_part2 *gpio2;
+
+static unsigned int board_rev = -1;
+
+static inline u32 get_model_rev(void);
+
+static void check_hw_revision(void)
+{
+	int modelrev = 0;
+	int i;
+
+	gpio2 = (struct exynos4x12_gpio_part2 *)EXYNOS4X12_GPIO_PART2_BASE;
+
+	/*
+	 * GPM1[1:0]: MODEL_REV[1:0]
+	 * Don't set as pull-none for these N/C pin.
+	 * TRM say that it may cause unexcepted state and leakage current.
+	 * and pull-none is only for output function.
+	 */
+	for (i = 0; i < 2; i++)
+		s5p_gpio_cfg_pin(&gpio2->m1, i, GPIO_INPUT);
+
+	/* GPM1[5:2]: HW_REV[3:0] */
+	for (i = 2; i < 6; i++) {
+		s5p_gpio_cfg_pin(&gpio2->m1, i, GPIO_INPUT);
+		s5p_gpio_set_pull(&gpio2->m1, i, GPIO_PULL_NONE);
+	}
+
+	/* GPM1[1:0]: MODEL_REV[1:0] */
+	for (i = 0; i < 2; i++)
+		modelrev |= (s5p_gpio_get_value(&gpio2->m1, i) << i);
+
+	/* board_rev[15:8] = model */
+	board_rev = modelrev << 8;
+}
+
+#ifdef CONFIG_DISPLAY_BOARDINFO
+int checkboard(void)
+{
+	puts("Board:\tTRATS2\n");
+	return 0;
+}
+#endif
+
+static void show_hw_revision(void)
+{
+	printf("HW Revision:\t0x%04x\n", board_rev);
+}
+
+u32 get_board_rev(void)
+{
+	return board_rev;
+}
+
+static inline u32 get_model_rev(void)
+{
+	return (board_rev >> 8) & 0xff;
+}
+
+static void board_external_gpio_init(void)
+{
+	gpio2 = (struct exynos4x12_gpio_part2 *)EXYNOS4X12_GPIO_PART2_BASE;
+
+	/*
+	 * some pins which in alive block are connected with external pull-up
+	 * but it's default setting is pull-down.
+	 * if that pin set as input then that floated
+	 */
+
+	s5p_gpio_set_pull(&gpio2->x0, 2, GPIO_PULL_NONE);	/* PS_ALS_INT */
+	s5p_gpio_set_pull(&gpio2->x0, 4, GPIO_PULL_NONE);	/* TSP_nINT */
+	s5p_gpio_set_pull(&gpio2->x0, 7, GPIO_PULL_NONE);	/* AP_PMIC_IRQ*/
+	s5p_gpio_set_pull(&gpio2->x1, 5, GPIO_PULL_NONE);	/* IF_PMIC_IRQ*/
+	s5p_gpio_set_pull(&gpio2->x2, 0, GPIO_PULL_NONE);	/* VOL_UP */
+	s5p_gpio_set_pull(&gpio2->x2, 1, GPIO_PULL_NONE);	/* VOL_DOWN */
+	s5p_gpio_set_pull(&gpio2->x2, 3, GPIO_PULL_NONE);	/* FUEL_ALERT */
+	s5p_gpio_set_pull(&gpio2->x2, 4, GPIO_PULL_NONE);	/* ADC_INT */
+	s5p_gpio_set_pull(&gpio2->x2, 7, GPIO_PULL_NONE);	/* nPOWER */
+	s5p_gpio_set_pull(&gpio2->x3, 0, GPIO_PULL_NONE);	/* WPC_INT */
+	s5p_gpio_set_pull(&gpio2->x3, 5, GPIO_PULL_NONE);	/* OK_KEY */
+	s5p_gpio_set_pull(&gpio2->x3, 7, GPIO_PULL_NONE);	/* HDMI_HPD */
+}
+
+#ifdef CONFIG_SYS_I2C_INIT_BOARD
+static void board_init_i2c(void)
+{
+	gpio1 = (struct exynos4x12_gpio_part1 *)EXYNOS4X12_GPIO_PART1_BASE;
+	gpio2 = (struct exynos4x12_gpio_part2 *)EXYNOS4X12_GPIO_PART2_BASE;
+
+	/* I2C_7 */
+	s5p_gpio_direction_output(&gpio1->d0, 2, 1);
+	s5p_gpio_direction_output(&gpio1->d0, 3, 1);
+
+	/* I2C_8 */
+	s5p_gpio_direction_output(&gpio1->f1, 4, 1);
+	s5p_gpio_direction_output(&gpio1->f1, 5, 1);
+
+	/* I2C_9 */
+	s5p_gpio_direction_output(&gpio2->m2, 1, 1);
+	s5p_gpio_direction_output(&gpio2->m2, 0, 1);
+}
+#endif
+
+int board_early_init_f(void)
+{
+	check_hw_revision();
+	board_external_gpio_init();
+
+	gd->flags |= GD_FLG_DISABLE_CONSOLE;
+
+	return 0;
+}
+
+static int pmic_init_max77686(void);
+
+int board_init(void)
+{
+	struct exynos4_power *pwr =
+		(struct exynos4_power *)EXYNOS4X12_POWER_BASE;
+
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	/* workaround: clear INFORM4..5 */
+	writel(0, (unsigned int)&pwr->inform4);
+	writel(0, (unsigned int)&pwr->inform5);
+
+	return 0;
+}
+
+int power_init_board(void)
+{
+	int chrg;
+	struct power_battery *pb;
+	struct pmic *p_chrg, *p_muic, *p_fg, *p_bat;
+
+#ifdef CONFIG_SYS_I2C_INIT_BOARD
+	board_init_i2c();
+#endif
+	pmic_init(I2C_0);		/* I2C adapter 0 - bus name I2C_5 */
+	pmic_init_max77686();
+	pmic_init_max77693(I2C_2);	/* I2C adapter 2 - bus name I2C_10 */
+	power_muic_init(I2C_2);		/* I2C adapter 2 - bus name I2C_10 */
+	power_fg_init(I2C_1);		/* I2C adapter 1 - bus name I2C_9 */
+	power_bat_init(0);
+
+	p_chrg = pmic_get("MAX77693_PMIC");
+	if (!p_chrg) {
+		puts("MAX77693_PMIC: Not found\n");
+		return -ENODEV;
+	}
+
+	p_muic = pmic_get("MAX77693_MUIC");
+	if (!p_muic) {
+		puts("MAX77693_MUIC: Not found\n");
+		return -ENODEV;
+	}
+
+	p_fg = pmic_get("MAX77693_FG");
+	if (!p_fg) {
+		puts("MAX17042_FG: Not found\n");
+		return -ENODEV;
+	}
+
+	if (p_chrg->chrg->chrg_bat_present(p_chrg) == 0)
+		puts("No battery detected\n");
+
+	p_bat = pmic_get("BAT_TRATS2");
+	if (!p_bat) {
+		puts("BAT_TRATS2: Not found\n");
+		return -ENODEV;
+	}
+
+	p_fg->parent =  p_bat;
+	p_chrg->parent = p_bat;
+	p_muic->parent = p_bat;
+
+	p_bat->pbat->battery_init(p_bat, p_fg, p_chrg, p_muic);
+
+	pb = p_bat->pbat;
+	chrg = p_muic->chrg->chrg_type(p_muic);
+	debug("CHARGER TYPE: %d\n", chrg);
+
+	if (!p_chrg->chrg->chrg_bat_present(p_chrg)) {
+		puts("No battery detected\n");
+		return -1;
+	}
+
+	p_fg->fg->fg_battery_check(p_fg, p_bat);
+
+	if (pb->bat->state == CHARGE && chrg == CHARGER_USB)
+		puts("CHARGE Battery !\n");
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	u32 size_mb;
+
+	size_mb = (get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE) +
+		get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE) +
+		get_ram_size((long *)PHYS_SDRAM_3, PHYS_SDRAM_3_SIZE) +
+		get_ram_size((long *)PHYS_SDRAM_4, PHYS_SDRAM_4_SIZE)) >> 20;
+
+	gd->ram_size = size_mb << 20;
+
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+	gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
+	gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
+	gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
+	gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
+	gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	int err0, err2 = 0;
+
+	gpio2 = (struct exynos4x12_gpio_part2 *)EXYNOS4X12_GPIO_PART2_BASE;
+
+	/* eMMC_EN: SD_0_CDn: GPK0[2] Output High */
+	s5p_gpio_direction_output(&gpio2->k0, 2, 1);
+	s5p_gpio_set_pull(&gpio2->k0, 2, GPIO_PULL_NONE);
+
+	/*
+	 * eMMC GPIO:
+	 * SDR 8-bit@48MHz at MMC0
+	 * GPK0[0]      SD_0_CLK(2)
+	 * GPK0[1]      SD_0_CMD(2)
+	 * GPK0[2]      SD_0_CDn        -> Not used
+	 * GPK0[3:6]    SD_0_DATA[0:3](2)
+	 * GPK1[3:6]    SD_0_DATA[0:3](3)
+	 *
+	 * DDR 4-bit@26MHz at MMC4
+	 * GPK0[0]      SD_4_CLK(3)
+	 * GPK0[1]      SD_4_CMD(3)
+	 * GPK0[2]      SD_4_CDn        -> Not used
+	 * GPK0[3:6]    SD_4_DATA[0:3](3)
+	 * GPK1[3:6]    SD_4_DATA[4:7](4)
+	 */
+
+	err0 = exynos_pinmux_config(PERIPH_ID_SDMMC0, PINMUX_FLAG_8BIT_MODE);
+
+	/*
+	 * MMC device init
+	 * mmc0  : eMMC (8-bit buswidth)
+	 * mmc2  : SD card (4-bit buswidth)
+	 */
+	if (err0)
+		debug("SDMMC0 not configured\n");
+	else
+		err0 = s5p_mmc_init(0, 8);
+
+	/* T-flash detect */
+	s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
+	s5p_gpio_set_pull(&gpio2->x3, 4, GPIO_PULL_UP);
+
+	/*
+	 * Check the T-flash  detect pin
+	 * GPX3[4] T-flash detect pin
+	 */
+	if (!s5p_gpio_get_value(&gpio2->x3, 4)) {
+		err2 = exynos_pinmux_config(PERIPH_ID_SDMMC2, PINMUX_FLAG_NONE);
+		if (err2)
+			debug("SDMMC2 not configured\n");
+		else
+			err2 = s5p_mmc_init(2, 4);
+	}
+
+	return err0 & err2;
+}
+
+static int pmic_init_max77686(void)
+{
+	struct pmic *p = pmic_get("MAX77686_PMIC");
+
+	if (pmic_probe(p))
+		return -1;
+
+	/* BUCK/LDO Output Voltage */
+	max77686_set_ldo_voltage(p, 21, 2800000);	/* LDO21 VTF_2.8V */
+	max77686_set_ldo_voltage(p, 23, 3300000);	/* LDO23 TSP_AVDD_3.3V*/
+	max77686_set_ldo_voltage(p, 24, 1800000);	/* LDO24 TSP_VDD_1.8V */
+
+	/* BUCK/LDO Output Mode */
+	max77686_set_buck_mode(p, 1, OPMODE_STANDBY);	/* BUCK1 VMIF_1.1V_AP */
+	max77686_set_buck_mode(p, 2, OPMODE_ON);	/* BUCK2 VARM_1.0V_AP */
+	max77686_set_buck_mode(p, 3, OPMODE_ON);	/* BUCK3 VINT_1.0V_AP */
+	max77686_set_buck_mode(p, 4, OPMODE_ON);	/* BUCK4 VG3D_1.0V_AP */
+	max77686_set_buck_mode(p, 5, OPMODE_ON);	/* BUCK5 VMEM_1.2V_AP */
+	max77686_set_buck_mode(p, 6, OPMODE_ON);	/* BUCK6 VCC_SUB_1.35V*/
+	max77686_set_buck_mode(p, 7, OPMODE_ON);	/* BUCK7 VCC_SUB_2.0V */
+	max77686_set_buck_mode(p, 8, OPMODE_OFF);	/* VMEM_VDDF_2.85V */
+	max77686_set_buck_mode(p, 9, OPMODE_OFF);	/* CAM_ISP_CORE_1.2V*/
+
+	max77686_set_ldo_mode(p, 1, OPMODE_LPM);	/* LDO1 VALIVE_1.0V_AP*/
+	max77686_set_ldo_mode(p, 2, OPMODE_STANDBY);	/* LDO2 VM1M2_1.2V_AP */
+	max77686_set_ldo_mode(p, 3, OPMODE_LPM);	/* LDO3 VCC_1.8V_AP */
+	max77686_set_ldo_mode(p, 4, OPMODE_LPM);	/* LDO4 VCC_2.8V_AP */
+	max77686_set_ldo_mode(p, 5, OPMODE_OFF);	/* LDO5_VCC_1.8V_IO */
+	max77686_set_ldo_mode(p, 6, OPMODE_STANDBY);	/* LDO6 VMPLL_1.0V_AP */
+	max77686_set_ldo_mode(p, 7, OPMODE_STANDBY);	/* LDO7 VPLL_1.0V_AP */
+	max77686_set_ldo_mode(p, 8, OPMODE_LPM);	/* LDO8 VMIPI_1.0V_AP */
+	max77686_set_ldo_mode(p, 9, OPMODE_OFF);	/* CAM_ISP_MIPI_1.2*/
+	max77686_set_ldo_mode(p, 10, OPMODE_LPM);	/* LDO10 VMIPI_1.8V_AP*/
+	max77686_set_ldo_mode(p, 11, OPMODE_STANDBY);	/* LDO11 VABB1_1.8V_AP*/
+	max77686_set_ldo_mode(p, 12, OPMODE_LPM);	/* LDO12 VUOTG_3.0V_AP*/
+	max77686_set_ldo_mode(p, 13, OPMODE_OFF);	/* LDO13 VC2C_1.8V_AP */
+	max77686_set_ldo_mode(p, 14, OPMODE_STANDBY);	/* VABB02_1.8V_AP */
+	max77686_set_ldo_mode(p, 15, OPMODE_STANDBY);	/* LDO15 VHSIC_1.0V_AP*/
+	max77686_set_ldo_mode(p, 16, OPMODE_STANDBY);	/* LDO16 VHSIC_1.8V_AP*/
+	max77686_set_ldo_mode(p, 17, OPMODE_OFF);	/* CAM_SENSOR_CORE_1.2*/
+	max77686_set_ldo_mode(p, 18, OPMODE_OFF);	/* CAM_ISP_SEN_IO_1.8V*/
+	max77686_set_ldo_mode(p, 19, OPMODE_OFF);	/* LDO19 VT_CAM_1.8V */
+	max77686_set_ldo_mode(p, 20, OPMODE_ON);	/* LDO20 VDDQ_PRE_1.8V*/
+	max77686_set_ldo_mode(p, 21, OPMODE_OFF);	/* LDO21 VTF_2.8V */
+	max77686_set_ldo_mode(p, 22, OPMODE_OFF);	/* LDO22 VMEM_VDD_2.8V*/
+	max77686_set_ldo_mode(p, 23, OPMODE_OFF);	/* LDO23 TSP_AVDD_3.3V*/
+	max77686_set_ldo_mode(p, 24, OPMODE_OFF);	/* LDO24 TSP_VDD_1.8V */
+	max77686_set_ldo_mode(p, 25, OPMODE_OFF);	/* LDO25 VCC_3.3V_LCD */
+	max77686_set_ldo_mode(p, 26, OPMODE_OFF);	/*LDO26 VCC_3.0V_MOTOR*/
+
+	return 0;
+}
+
+/*
+ * LCD
+ */
+
+#ifdef CONFIG_LCD
+static struct mipi_dsim_config dsim_config = {
+	.e_interface		= DSIM_VIDEO,
+	.e_virtual_ch		= DSIM_VIRTUAL_CH_0,
+	.e_pixel_format		= DSIM_24BPP_888,
+	.e_burst_mode		= DSIM_BURST_SYNC_EVENT,
+	.e_no_data_lane		= DSIM_DATA_LANE_4,
+	.e_byte_clk		= DSIM_PLL_OUT_DIV8,
+	.hfp			= 1,
+
+	.p			= 3,
+	.m			= 120,
+	.s			= 1,
+
+	/* D-PHY PLL stable time spec :min = 200usec ~ max 400usec */
+	.pll_stable_time	= 500,
+
+	/* escape clk : 10MHz */
+	.esc_clk		= 20 * 1000000,
+
+	/* stop state holding counter after bta change count 0 ~ 0xfff */
+	.stop_holding_cnt	= 0x7ff,
+	/* bta timeout 0 ~ 0xff */
+	.bta_timeout		= 0xff,
+	/* lp rx timeout 0 ~ 0xffff */
+	.rx_timeout		= 0xffff,
+};
+
+static struct exynos_platform_mipi_dsim dsim_platform_data = {
+	.lcd_panel_info = NULL,
+	.dsim_config = &dsim_config,
+};
+
+static struct mipi_dsim_lcd_device mipi_lcd_device = {
+	.name	= "s6e8ax0",
+	.id	= -1,
+	.bus_id	= 0,
+	.platform_data	= (void *)&dsim_platform_data,
+};
+
+static int mipi_power(void)
+{
+	struct pmic *p = pmic_get("MAX77686_PMIC");
+
+	/* LDO8 VMIPI_1.0V_AP */
+	max77686_set_ldo_mode(p, 8, OPMODE_ON);
+	/* LDO10 VMIPI_1.8V_AP */
+	max77686_set_ldo_mode(p, 10, OPMODE_ON);
+
+	return 0;
+}
+
+void exynos_lcd_power_on(void)
+{
+	struct pmic *p = pmic_get("MAX77686_PMIC");
+
+	gpio1 = (struct exynos4x12_gpio_part1 *)EXYNOS4X12_GPIO_PART1_BASE;
+
+	/* LCD_2.2V_EN: GPC0[1] */
+	s5p_gpio_set_pull(&gpio1->c0, 1, GPIO_PULL_UP);
+	s5p_gpio_direction_output(&gpio1->c0, 1, 1);
+
+	/* LDO25 VCC_3.1V_LCD */
+	pmic_probe(p);
+	max77686_set_ldo_voltage(p, 25, 3100000);
+	max77686_set_ldo_mode(p, 25, OPMODE_LPM);
+}
+
+void exynos_reset_lcd(void)
+{
+	gpio1 = (struct exynos4x12_gpio_part1 *)EXYNOS4X12_GPIO_PART1_BASE;
+
+	/* reset lcd */
+	s5p_gpio_direction_output(&gpio1->f2, 1, 0);
+	udelay(10);
+	s5p_gpio_set_value(&gpio1->f2, 1, 1);
+}
+
+vidinfo_t panel_info = {
+	.vl_freq	= 60,
+	.vl_col		= 720,
+	.vl_row		= 1280,
+	.vl_width	= 720,
+	.vl_height	= 1280,
+	.vl_clkp	= CONFIG_SYS_HIGH,
+	.vl_hsp		= CONFIG_SYS_LOW,
+	.vl_vsp		= CONFIG_SYS_LOW,
+	.vl_dp		= CONFIG_SYS_LOW,
+	.vl_bpix	= 5,	/* Bits per pixel, 2^5 = 32 */
+
+	/* s6e8ax0 Panel infomation */
+	.vl_hspw	= 5,
+	.vl_hbpd	= 10,
+	.vl_hfpd	= 10,
+
+	.vl_vspw	= 2,
+	.vl_vbpd	= 1,
+	.vl_vfpd	= 13,
+	.vl_cmd_allow_len = 0xf,
+	.mipi_enabled = 1,
+
+	.dual_lcd_enabled = 0,
+
+	.init_delay	= 0,
+	.power_on_delay = 25,
+	.reset_delay	= 0,
+	.interface_mode = FIMD_RGB_INTERFACE,
+};
+
+void init_panel_info(vidinfo_t *vid)
+{
+	vid->logo_on	= 1;
+	vid->resolution	= HD_RESOLUTION;
+	vid->rgb_mode	= MODE_RGB_P;
+
+	vid->power_on_delay = 30;
+
+	mipi_lcd_device.reverse_panel = 1;
+
+#ifdef CONFIG_TIZEN
+	get_tizen_logo_info(vid);
+#endif
+
+	strcpy(dsim_platform_data.lcd_panel_name, mipi_lcd_device.name);
+	dsim_platform_data.mipi_power = mipi_power;
+	dsim_platform_data.phy_enable = set_mipi_phy_ctrl;
+	dsim_platform_data.lcd_panel_info = (void *)vid;
+	exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device);
+
+	s6e8ax0_init();
+
+	exynos_set_dsim_platform_data(&dsim_platform_data);
+}
+#endif /* LCD */
+
+#ifdef CONFIG_MISC_INIT_R
+int misc_init_r(void)
+{
+	setenv("model", "GT-I8800");
+	setenv("board", "TRATS2");
+
+	show_hw_revision();
+
+	return 0;
+}
+#endif