[U-Boot] [PATCH 55/55] exynos: Add support for spring
Simon Glass
sjg at chromium.org
Fri Jul 3 02:16:32 CEST 2015
Spring is the first ARM-based HP Chromebook 11. It is similar to snow
and it uses the same Samsung Exynos5250 chip. But has some unusual
features. Mainline support for it has lagged snow (both in kernel and
U-Boot). Now that the exynos5 code is common we can support spring just
by adding a device tree and a few lines of configuration.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
arch/arm/cpu/armv7/exynos/Kconfig | 6 +
arch/arm/dts/Makefile | 1 +
arch/arm/dts/exynos5250-spring.dts | 588 +++++++++++++++++++++++++++++++++++++
board/samsung/smdk5250/Kconfig | 13 +
board/samsung/smdk5250/MAINTAINERS | 6 +
configs/spring_defconfig | 38 +++
include/configs/spring.h | 20 ++
7 files changed, 672 insertions(+)
create mode 100644 arch/arm/dts/exynos5250-spring.dts
create mode 100644 configs/spring_defconfig
create mode 100644 include/configs/spring.h
diff --git a/arch/arm/cpu/armv7/exynos/Kconfig b/arch/arm/cpu/armv7/exynos/Kconfig
index 3ca7128..9f810f3 100644
--- a/arch/arm/cpu/armv7/exynos/Kconfig
+++ b/arch/arm/cpu/armv7/exynos/Kconfig
@@ -51,6 +51,12 @@ config TARGET_SNOW
select OF_CONTROL
select SPL_DISABLE_OF_CONTROL
+config TARGET_SPRING
+ bool "Spring board"
+ select SUPPORT_SPL
+ select OF_CONTROL
+ select SPL_DISABLE_OF_CONTROL
+
config TARGET_SMDK5420
bool "SMDK5420 board"
select SUPPORT_SPL
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 9c735c6..b7b3f13 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -9,6 +9,7 @@ dtb-$(CONFIG_EXYNOS4) += exynos4210-origen.dtb \
dtb-$(CONFIG_EXYNOS5) += exynos5250-arndale.dtb \
exynos5250-snow.dtb \
+ exynos5250-spring.dtb \
exynos5250-smdk5250.dtb \
exynos5420-smdk5420.dtb \
exynos5420-peach-pit.dtb \
diff --git a/arch/arm/dts/exynos5250-spring.dts b/arch/arm/dts/exynos5250-spring.dts
new file mode 100644
index 0000000..76d5323
--- /dev/null
+++ b/arch/arm/dts/exynos5250-spring.dts
@@ -0,0 +1,588 @@
+/*
+ * Google Spring board device tree source
+ *
+ * Copyright (c) 2013 Google, Inc
+ * Copyright (c) 2014 SUSE LINUX Products GmbH
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+/dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/input/input.h>
+#include "exynos5250.dtsi"
+
+/ {
+ model = "Google Spring";
+ compatible = "google,spring", "samsung,exynos5250", "samsung,exynos5";
+
+ aliases {
+ i2c0 = "/i2c at 12C60000";
+ i2c1 = "/i2c at 12C70000";
+ i2c2 = "/i2c at 12C80000";
+ i2c3 = "/i2c at 12C90000";
+ i2c4 = "/i2c at 12CA0000";
+ i2c5 = "/i2c at 12CB0000";
+ i2c6 = "/i2c at 12CC0000";
+ i2c7 = "/i2c at 12CD0000";
+ i2c104 = &cros_ec_ldo_tunnel;
+ spi0 = "/spi at 12d20000";
+ spi1 = "/spi at 12d30000";
+ spi2 = "/spi at 12d40000";
+ spi3 = "/spi at 131a0000";
+ spi4 = "/spi at 131b0000";
+ mmc0 = "/mmc at 12000000";
+ serial0 = "/serial at 12C30000";
+ console = "/serial at 12C30000";
+ i2s = "/sound at 3830000";
+ };
+
+ memory {
+ reg = <0x40000000 0x80000000>;
+ };
+
+ flash at 0 {
+ spl { /* spl size override */
+ size = <0x8000>;
+ };
+ };
+
+ chosen {
+ bootargs = "console=tty1";
+ stdout-path = "serial3:115200n8";
+ };
+
+ board-rev {
+ compatible = "google,board-revision";
+ google,board-rev-gpios = <&gpy4 0 0>, <&gpy4 1 0>,
+ <&gpy4 2 0>;
+ };
+
+ mmc at 12200000 {
+ samsung,bus-width = <8>;
+ samsung,timing = <1 3 3>;
+ samsung,removable = <0>;
+ };
+
+ mmc at 12210000 {
+ status = "disabled";
+ };
+
+ mmc at 12220000 {
+ /* MMC2 pins are used as GPIO for eDP bridge */
+ status = "disabled";
+ };
+
+ mmc at 12230000 {
+ status = "disabled";
+ };
+
+ ehci at 12110000 {
+ samsung,vbus-gpio = <&gpx1 1 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+
+ xhci at 12000000 {
+ samsung,vbus-gpio = <&gpx2 7 GPIO_ACTIVE_HIGH>;
+ };
+
+ spi at 12d30000 {
+ spi-max-frequency = <50000000>;
+ firmware_storage_spi: flash at 0 {
+ compatible = "spi-flash";
+ reg = <0>;
+ };
+ };
+
+ tmu at 10060000 {
+ samsung,min-temp = <25>;
+ samsung,max-temp = <125>;
+ samsung,start-warning = <95>;
+ samsung,start-tripping = <105>;
+ samsung,hw-tripping = <110>;
+ samsung,efuse-min-value = <40>;
+ samsung,efuse-value = <55>;
+ samsung,efuse-max-value = <100>;
+ samsung,slope = <274761730>;
+ samsung,dc-value = <25>;
+ };
+
+ fimd at 14400000 {
+ samsung,vl-freq = <60>;
+ samsung,vl-col = <1366>;
+ samsung,vl-row = <768>;
+ samsung,vl-width = <1366>;
+ samsung,vl-height = <768>;
+
+ samsung,vl-clkp;
+ samsung,vl-dp;
+ samsung,vl-hsp;
+ samsung,vl-vsp;
+
+ samsung,vl-bpix = <4>;
+
+ samsung,vl-hspw = <32>;
+ samsung,vl-hbpd = <80>;
+ samsung,vl-hfpd = <48>;
+ samsung,vl-vspw = <5>;
+ samsung,vl-vbpd = <14>;
+ samsung,vl-vfpd = <3>;
+ samsung,vl-cmd-allow-len = <0xf>;
+
+ samsung,winid = <0>;
+ samsung,interface-mode = <1>;
+ samsung,dp-enabled = <1>;
+ samsung,dual-lcd-enabled = <0>;
+ };
+
+ dp at 145b0000 {
+ samsung,lt-status = <0>;
+
+ samsung,master-mode = <0>;
+ samsung,bist-mode = <0>;
+ samsung,bist-pattern = <0>;
+ samsung,h-sync-polarity = <0>;
+ samsung,v-sync-polarity = <0>;
+ samsung,interlaced = <0>;
+ samsung,color-space = <0>;
+ samsung,dynamic-range = <0>;
+ samsung,ycbcr-coeff = <0>;
+ samsung,color-depth = <1>;
+ };
+};
+
+&i2c_0 {
+ status = "okay";
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <378000>;
+
+ s5m8767-pmic at 66 {
+ compatible = "samsung,s5m8767-pmic";
+ reg = <0x66>;
+ interrupt-parent = <&gpx3>;
+ wakeup-source;
+
+ s5m8767,pmic-buck-dvs-gpios = <&gpd1 0 GPIO_ACTIVE_LOW>, /* DVS1 */
+ <&gpd1 1 GPIO_ACTIVE_LOW>, /* DVS2 */
+ <&gpd1 2 GPIO_ACTIVE_LOW>; /* DVS3 */
+
+ s5m8767,pmic-buck-ds-gpios = <&gpx2 3 GPIO_ACTIVE_LOW>, /* SET1 */
+ <&gpx2 4 GPIO_ACTIVE_LOW>, /* SET2 */
+ <&gpx2 5 GPIO_ACTIVE_LOW>; /* SET3 */
+
+ /*
+ * The following arrays of DVS voltages are not used, since we are
+ * not using GPIOs to control PMIC bucks, but they must be defined
+ * to please the driver.
+ */
+ s5m8767,pmic-buck2-dvs-voltage = <1350000>, <1300000>,
+ <1250000>, <1200000>,
+ <1150000>, <1100000>,
+ <1000000>, <950000>;
+
+ s5m8767,pmic-buck3-dvs-voltage = <1100000>, <1100000>,
+ <1100000>, <1100000>,
+ <1000000>, <1000000>,
+ <1000000>, <1000000>;
+
+ s5m8767,pmic-buck4-dvs-voltage = <1200000>, <1200000>,
+ <1200000>, <1200000>,
+ <1200000>, <1200000>,
+ <1200000>, <1200000>;
+
+ clocks {
+ compatible = "samsung,s5m8767-clk";
+ #clock-cells = <1>;
+ clock-output-names = "en32khz_ap",
+ "en32khz_cp",
+ "en32khz_bt";
+ };
+
+ regulators {
+ ldo4_reg: LDO4 {
+ regulator-name = "P1.0V_LDO_OUT4";
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1000000>;
+ regulator-always-on;
+ op_mode = <0>;
+ };
+
+ ldo5_reg: LDO5 {
+ regulator-name = "P1.8V_LDO_OUT5";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ op_mode = <0>;
+ };
+
+ ldo6_reg: LDO6 {
+ regulator-name = "vdd_mydp";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-always-on;
+ op_mode = <3>;
+ };
+
+ ldo7_reg: LDO7 {
+ regulator-name = "P1.1V_LDO_OUT7";
+ regulator-min-microvolt = <1100000>;
+ regulator-max-microvolt = <1100000>;
+ regulator-always-on;
+ op_mode = <3>;
+ };
+
+ ldo8_reg: LDO8 {
+ regulator-name = "P1.0V_LDO_OUT8";
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1000000>;
+ regulator-always-on;
+ op_mode = <3>;
+ };
+
+ ldo10_reg: LDO10 {
+ regulator-name = "P1.8V_LDO_OUT10";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ op_mode = <3>;
+ };
+
+ ldo11_reg: LDO11 {
+ regulator-name = "P1.8V_LDO_OUT11";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ op_mode = <0>;
+ };
+
+ ldo12_reg: LDO12 {
+ regulator-name = "P3.0V_LDO_OUT12";
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-always-on;
+ op_mode = <3>;
+ };
+
+ ldo13_reg: LDO13 {
+ regulator-name = "P1.8V_LDO_OUT13";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ op_mode = <0>;
+ };
+
+ ldo14_reg: LDO14 {
+ regulator-name = "P1.8V_LDO_OUT14";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ op_mode = <3>;
+ };
+
+ ldo15_reg: LDO15 {
+ regulator-name = "P1.0V_LDO_OUT15";
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1000000>;
+ regulator-always-on;
+ op_mode = <3>;
+ };
+
+ ldo16_reg: LDO16 {
+ regulator-name = "P1.8V_LDO_OUT16";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ op_mode = <3>;
+ };
+
+ ldo17_reg: LDO17 {
+ regulator-name = "P1.2V_LDO_OUT17";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-always-on;
+ op_mode = <0>;
+ };
+
+ ldo25_reg: LDO25 {
+ regulator-name = "vdd_bridge";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-always-on;
+ op_mode = <1>;
+ };
+
+ buck1_reg: BUCK1 {
+ regulator-name = "vdd_mif";
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <1300000>;
+ regulator-always-on;
+ regulator-boot-on;
+ op_mode = <3>;
+ };
+
+ buck2_reg: BUCK2 {
+ regulator-name = "vdd_arm";
+ regulator-min-microvolt = <850000>;
+ regulator-max-microvolt = <1350000>;
+ regulator-always-on;
+ regulator-boot-on;
+ op_mode = <3>;
+ };
+
+ buck3_reg: BUCK3 {
+ regulator-name = "vdd_int";
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-always-on;
+ regulator-boot-on;
+ op_mode = <3>;
+ };
+
+ buck4_reg: BUCK4 {
+ regulator-name = "vdd_g3d";
+ regulator-min-microvolt = <850000>;
+ regulator-max-microvolt = <1300000>;
+ regulator-boot-on;
+ op_mode = <3>;
+ };
+
+ buck5_reg: BUCK5 {
+ regulator-name = "P1.8V_BUCK_OUT5";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ op_mode = <1>;
+ };
+
+ buck6_reg: BUCK6 {
+ regulator-name = "P1.2V_BUCK_OUT6";
+ regulator-min-microvolt = <2050000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-always-on;
+ regulator-boot-on;
+ op_mode = <0>;
+ };
+
+ buck9_reg: BUCK9 {
+ regulator-name = "vdd_ummc";
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-always-on;
+ regulator-boot-on;
+ op_mode = <3>;
+ };
+ };
+ };
+};
+
+&i2c_1 {
+ status = "okay";
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <378000>;
+};
+
+&i2c_2 {
+ status = "okay";
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+};
+
+&i2c_3 {
+ status = "okay";
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+};
+
+&i2c_4 {
+ status = "okay";
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+ clock-frequency = <66000>;
+
+ cros_ec: embedded-controller {
+ compatible = "google,cros-ec-i2c";
+ reg = <0x1e>;
+ interrupts = <6 IRQ_TYPE_NONE>;
+ interrupt-parent = <&gpx1>;
+ wakeup-source;
+ u-boot,i2c-offset-len = <0>;
+ ec-interrupt = <&gpx1 6 GPIO_ACTIVE_LOW>;
+ cros_ec_ldo_tunnel: cros-ec-ldo-tunnel {
+ compatible = "google,cros-ec-ldo-tunnel";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ power-regulator {
+ compatible = "ti,tps65090";
+ reg = <0x48>;
+
+ regulators {
+ dcdc1 {
+ ti,enable-ext-control;
+ };
+ dcdc2 {
+ ti,enable-ext-control;
+ };
+ dcdc3 {
+ ti,enable-ext-control;
+ };
+ fet1: fet1 {
+ regulator-name = "vcd_led";
+ ti,overcurrent-wait = <3>;
+ };
+ tps65090_fet2: fet2 {
+ regulator-name = "video_mid";
+ regulator-always-on;
+ ti,overcurrent-wait = <3>;
+ };
+ fet3 {
+ regulator-name = "wwan_r";
+ regulator-always-on;
+ ti,overcurrent-wait = <3>;
+ };
+ fet4 {
+ regulator-name = "sdcard";
+ ti,overcurrent-wait = <3>;
+ };
+ fet5 {
+ regulator-name = "camout";
+ regulator-always-on;
+ ti,overcurrent-wait = <3>;
+ };
+ fet6: fet6 {
+ regulator-name = "lcd_vdd";
+ ti,overcurrent-wait = <3>;
+ };
+ tps65090_fet7: fet7 {
+ regulator-name = "video_mid_1a";
+ regulator-always-on;
+ ti,overcurrent-wait = <3>;
+ };
+ ldo1 {
+ };
+ ldo2 {
+ };
+ };
+ };
+ };
+ };
+};
+
+&i2c_5 {
+ status = "okay";
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+};
+
+&i2c_7 {
+ status = "okay";
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+
+ ps8622-bridge at 8 {
+ compatible = "parade,ps8622";
+ reg = <0x8>;
+ sleep-gpios = <&gpc3 6 GPIO_ACTIVE_LOW>;
+ reset-gpios = <&gpc3 1 GPIO_ACTIVE_LOW>;
+ hotplug-gpios = <&gpc3 0 GPIO_ACTIVE_HIGH>;
+ power-supply = <&ldo6_reg>;
+ parade,regs = /bits/ 8 <
+ 0x02 0xa1 0x01 /* HPD low */
+ /*
+ * SW setting: [1:0] SW output 1.2V voltage is
+ * lower to 96%
+ */
+ 0x04 0x14 0x01
+ /* RCO SS setting: [5:4] = b01 0.5%, b10 1%, b11 1.5% */
+ 0x04 0xe3 0x20
+ 0x04 0xe2 0x80 /* [7] RCO SS enable */
+ /*
+ * RPHY Setting: [3:2] CDR tune wait cycle before
+ * measure for fine tune b00: 1us,
+ * 01: 0.5us, 10:2us, 11:4us
+ */
+ 0x04 0x8a 0x0c
+ 0x04 0x89 0x08 /* [3] RFD always on */
+ /*
+ * CTN lock in/out: 20000ppm/80000ppm. Lock out 2 times
+ */
+ 0x04 0x71 0x2d
+ /* 2.7G CDR settings */
+ 0x04 0x7d 0x07 /* NOF=40LSB for HBR CDR setting */
+ 0x04 0x7b 0x00 /* [1:0] Fmin=+4bands */
+ 0x04 0x7a 0xfd /* [7:5] DCO_FTRNG=+-40% */
+ /*
+ * 1.62G CDR settings:
+ * [5:2]NOF=64LSB [1:0]DCO scale is 2/5
+ */
+ 0x04 0xc0 0x12
+ 0x04 0xc1 0x92 /* Gitune=-37% */
+ 0x04 0xc2 0x1c /* Fbstep=100% */
+ 0x04 0x32 0x80 /* [7] LOS signal disable */
+ /* RPIO Setting */
+ /* [7:4] LVDS driver bias current 75% (250mV swing) */
+ 0x04 0x00 0xb0
+ /* [7:6] Right-bar GPIO output strength is 8mA */
+ 0x04 0x15 0x40
+ /* EQ Training State Machine Setting */
+ 0x04 0x54 0x10 /* RCO calibration start */
+ /* [4:0] MAX_LANE_COUNT set to one lane */
+ 0x01 0x02 0x81
+ /* [4:0] LANE_COUNT_SET set to one lane */
+ 0x01 0x21 0x81
+ 0x00 0x52 0x20
+ 0x00 0xf1 0x03 /* HPD CP toggle enable */
+ 0x00 0x62 0x41
+ /* Counter number add 1ms counter delay */
+ 0x00 0xf6 0x01
+ /*
+ * [6]PWM function control by DPCD0040f[7], default
+ * is PWM block always works
+ */
+ 0x00 0x77 0x06
+ 0x00 0x4c 0x04
+ /*
+ * 04h Adjust VTotal tolerance to fix the 30Hz no-
+ * display issue
+ * DPCD00400='h00 Parade OUI = 'h001cf8
+ */
+ 0x01 0xc0 0x00
+ 0x01 0xc1 0x1c /* DPCD00401='h1c */
+ 0x01 0xc2 0xf8 /* DPCD00402='hf8 */
+ /* DPCD403~408 = ASCII code D2SLV5='h4432534c5635 */
+ 0x01 0xc3 0x44
+ 0x01 0xc4 0x32 /* DPCD404 */
+ 0x01 0xc5 0x53 /* DPCD405 */
+ 0x01 0xc6 0x4c /* DPCD406 */
+ 0x01 0xc7 0x56 /* DPCD407 */
+ 0x01 0xc8 0x35 /* DPCD408 */
+ /* DPCD40A Initial Code major revision '01' */
+ 0x01 0xca 0x01
+ /* DPCD40B Initial Code minor revision '05' */
+ 0x01 0xcb 0x05
+ 0x01 0xa5 0xa0 /* DPCD720, Select internal PWM */
+ /*
+ * 0xff for 100% PWM of brightness, 0h for 0% brightness
+ */
+ 0x01 0xa7 0x00
+ /*
+ * Set LVDS output as 6bit-VESA mapping, single LVDS
+ * channel
+ */
+ 0x01 0xcc 0x13
+ 0x02 0xb1 0x20 /* Enable SSC set by register */
+ /* Set SSC enabled and +/-1% central spreading */
+ 0x04 0x10 0x16
+ 0x04 0x59 0x60 /* MPU Clock source: LC => RCO */
+ 0x04 0x54 0x14 /* LC -> RCO */
+ 0x02 0xa1 0x91>; /* HPD high */
+ };
+
+ soundcodec at 20 {
+ reg = <0x20>;
+ compatible = "maxim,max98088-codec";
+ };
+};
+
+#include "cros-ec-keyboard.dtsi"
diff --git a/board/samsung/smdk5250/Kconfig b/board/samsung/smdk5250/Kconfig
index 698ee91..11ffaee 100644
--- a/board/samsung/smdk5250/Kconfig
+++ b/board/samsung/smdk5250/Kconfig
@@ -23,3 +23,16 @@ config SYS_CONFIG_NAME
default "snow"
endif
+
+if TARGET_SPRING
+
+config SYS_BOARD
+ default "smdk5250"
+
+config SYS_VENDOR
+ default "samsung"
+
+config SYS_CONFIG_NAME
+ default "spring"
+
+endif
diff --git a/board/samsung/smdk5250/MAINTAINERS b/board/samsung/smdk5250/MAINTAINERS
index 070593e..cde966f 100644
--- a/board/samsung/smdk5250/MAINTAINERS
+++ b/board/samsung/smdk5250/MAINTAINERS
@@ -10,3 +10,9 @@ M: Akshay Saraswat <akshay.s at samsung.com>
S: Maintained
F: include/configs/snow.h
F: configs/snow_defconfig
+
+SPRING BOARD
+M: Simon Glass <sjg at chromium.org>
+S: Maintained
+F: include/configs/spring.h
+F: configs/spring_defconfig
diff --git a/configs/spring_defconfig b/configs/spring_defconfig
new file mode 100644
index 0000000..00163e8
--- /dev/null
+++ b/configs/spring_defconfig
@@ -0,0 +1,38 @@
+CONFIG_ARM=y
+CONFIG_ARCH_EXYNOS=y
+CONFIG_TARGET_SPRING=y
+CONFIG_DEFAULT_DEVICE_TREE="exynos5250-spring"
+CONFIG_SPL=y
+CONFIG_CMD_NET=y
+CONFIG_CMD_SOUND=y
+CONFIG_CMD_CROS_EC=y
+CONFIG_CROS_EC=y
+CONFIG_CROS_EC_I2C=y
+CONFIG_CROS_EC_KEYB=y
+CONFIG_SOUND=y
+CONFIG_I2S=y
+CONFIG_I2S_SAMSUNG=y
+CONFIG_SOUND_MAX98095=y
+CONFIG_SOUND_WM8994=y
+CONFIG_DM_I2C=y
+CONFIG_DM_PMIC=y
+CONFIG_DM_REGULATOR=y
+CONFIG_PMIC_TPS65090=y
+CONFIG_REGULATOR_TPS65090=y
+CONFIG_DM_I2C_COMPAT=y
+CONFIG_I2C_ARB_GPIO_CHALLENGE=y
+CONFIG_I2C_MUX=y
+CONFIG_CMD_PMIC=y
+CONFIG_CMD_REGULATOR=y
+CONFIG_ERRNO_STR=y
+CONFIG_DM_PMIC_MAX77686=y
+CONFIG_DM_REGULATOR_MAX77686=y
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_UART_S5P=y
+CONFIG_DEBUG_UART_CLOCK=100000000
+CONFIG_DEBUG_UART_BASE=0x12c30000
+CONFIG_I2C_CROS_EC_LDO=y
+CONFIG_PMIC_S5M8767=y
+CONFIG_REGULATOR_S5M8767=y
+CONFIG_VIDEO_BRIDGE=y
+CONFIG_VIDEO_BRIDGE_PARADE_PS862X=y
diff --git a/include/configs/spring.h b/include/configs/spring.h
new file mode 100644
index 0000000..a692dfd
--- /dev/null
+++ b/include/configs/spring.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __CONFIG_SPRING_H
+#define __CONFIG_SPRING_H
+
+#include <configs/exynos5250-common.h>
+#include <configs/exynos5-dt-common.h>
+#include <configs/exynos5-common.h>
+
+#define CONFIG_BOARD_COMMON
+
+#define CONFIG_SYS_PROMPT "spring # "
+#define CONFIG_IDENT_STRING " for spring"
+#define CONFIG_DEFAULT_CONSOLE "console=ttySAC1,115200n8\0"
+
+#endif /* __CONFIG_SPRING_H */
--
2.4.3.573.g4eafbef
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