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authorDoug Anderson <dianders@chromium.org>2012-11-21 08:32:21 +0400
committerKukjin Kim <kgene.kim@samsung.com>2012-11-21 08:32:21 +0400
commit95e82941b73b4a8811299ad7b639157822c8c59d (patch)
treec267d70be7c3c21c4dd8de483b69a6012a009ffc /arch/arm
parentde0f42beef2a9e6742488c3c35be34d86ad9c2ed (diff)
downloadlinux-95e82941b73b4a8811299ad7b639157822c8c59d.tar.xz
ARM: dts: Add board dts file for Snow board (ARM Chromebook)
This dts file is based on the Snow dts file in the Chromium OS kernel tree with the following changes: * Some details have been updated to match the exynos5250-smdk5250.dts file from linux-next (as of c11068538994430547722dc9fb515a0ceefd5cb9). * This file doesn't include references to hardware whose upstream support isn't quite there yet. That includes most i2c devices. Note that most i2c busses have been included with no devices. The Snow dts file is mostly just an include of the "cros5250" dts file which describes a class of similar boards. Support for other boards has not yet been send upstream. With this file and a change to use UART3 for serial output I can: * Boot to a command line using either SD or EMMC as a root filesystem * See the power button and lid switch using evtest. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/boot/dts/Makefile3
-rw-r--r--arch/arm/boot/dts/cros5250-common.dtsi184
-rw-r--r--arch/arm/boot/dts/exynos5250-snow.dts43
3 files changed, 229 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 36488a58940b..e70cd372a677 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -24,7 +24,8 @@ dtb-$(CONFIG_ARCH_EXYNOS) += exynos4210-origen.dtb \
exynos4210-smdkv310.dtb \
exynos4210-trats.dtb \
exynos4412-smdk4412.dtb \
- exynos5250-smdk5250.dtb
+ exynos5250-smdk5250.dtb \
+ exynos5250-snow.dtb
dtb-$(CONFIG_ARCH_HIGHBANK) += highbank.dtb
dtb-$(CONFIG_ARCH_INTEGRATOR) += integratorap.dtb \
integratorcp.dtb
diff --git a/arch/arm/boot/dts/cros5250-common.dtsi b/arch/arm/boot/dts/cros5250-common.dtsi
new file mode 100644
index 000000000000..fddd17417433
--- /dev/null
+++ b/arch/arm/boot/dts/cros5250-common.dtsi
@@ -0,0 +1,184 @@
+/*
+ * Common device tree include for all Exynos 5250 boards based off of Daisy.
+ *
+ * Copyright (c) 2012 Google, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+/ {
+ aliases {
+ };
+
+ memory {
+ reg = <0x40000000 0x80000000>;
+ };
+
+ chosen {
+ };
+
+ i2c@12C60000 {
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <378000>;
+ gpios = <&gpb3 0 2 3 0>,
+ <&gpb3 1 2 3 0>;
+ };
+
+ i2c@12C70000 {
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <378000>;
+ gpios = <&gpb3 2 2 3 0>,
+ <&gpb3 3 2 3 0>;
+ };
+
+ i2c@12C80000 {
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+
+ /*
+ * Disabled pullups since external part has its own pullups and
+ * double-pulling gets us out of spec in some cases.
+ */
+ gpios = <&gpa0 6 3 0 0>,
+ <&gpa0 7 3 0 0>;
+
+ hdmiddc@50 {
+ compatible = "samsung,exynos5-hdmiddc";
+ reg = <0x50>;
+ };
+ };
+
+ i2c@12C90000 {
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+ gpios = <&gpa1 2 3 3 0>,
+ <&gpa1 3 3 3 0>;
+ };
+
+ i2c@12CA0000 {
+ status = "disabled";
+ };
+
+ i2c@12CB0000 {
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+ gpios = <&gpa2 2 3 3 0>,
+ <&gpa2 3 3 3 0>;
+ };
+
+ i2c@12CC0000 {
+ status = "disabled";
+ };
+
+ i2c@12CD0000 {
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <66000>;
+ gpios = <&gpb2 2 3 3 0>,
+ <&gpb2 3 3 3 0>;
+ };
+
+ i2c@12CE0000 {
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <378000>;
+
+ hdmiphy@38 {
+ compatible = "samsung,exynos5-hdmiphy";
+ reg = <0x38>;
+ };
+ };
+
+ dwmmc0@12200000 {
+ num-slots = <1>;
+ supports-highspeed;
+ broken-cd;
+ fifo-depth = <0x80>;
+ card-detect-delay = <200>;
+ samsung,dw-mshc-ciu-div = <3>;
+ samsung,dw-mshc-sdr-timing = <2 3 3>;
+ samsung,dw-mshc-ddr-timing = <1 2 3>;
+
+ slot@0 {
+ reg = <0>;
+ bus-width = <8>;
+ gpios = <&gpc0 0 2 0 3>, <&gpc0 1 2 0 3>,
+ <&gpc1 0 2 3 3>, <&gpc1 1 2 3 3>,
+ <&gpc1 2 2 3 3>, <&gpc1 3 2 3 3>,
+ <&gpc0 3 2 3 3>, <&gpc0 4 2 3 3>,
+ <&gpc0 5 2 3 3>, <&gpc0 6 2 3 3>;
+ };
+ };
+
+ dwmmc1@12210000 {
+ status = "disabled";
+ };
+
+ dwmmc2@12220000 {
+ num-slots = <1>;
+ supports-highspeed;
+ fifo-depth = <0x80>;
+ card-detect-delay = <200>;
+ samsung,dw-mshc-ciu-div = <3>;
+ samsung,dw-mshc-sdr-timing = <2 3 3>;
+ samsung,dw-mshc-ddr-timing = <1 2 3>;
+
+ slot@0 {
+ reg = <0>;
+ bus-width = <4>;
+ samsung,cd-pinmux-gpio = <&gpc3 2 2 3 3>;
+ wp-gpios = <&gpc2 1 0 0 3>;
+ gpios = <&gpc3 0 2 0 3>, <&gpc3 1 2 0 3>,
+ <&gpc3 3 2 3 3>, <&gpc3 4 2 3 3>,
+ <&gpc3 5 2 3 3>, <&gpc3 6 2 3 3>;
+ };
+ };
+
+ dwmmc3@12230000 {
+ num-slots = <1>;
+ supports-highspeed;
+ broken-cd;
+ fifo-depth = <0x80>;
+ card-detect-delay = <200>;
+ samsung,dw-mshc-ciu-div = <3>;
+ samsung,dw-mshc-sdr-timing = <2 3 3>;
+ samsung,dw-mshc-ddr-timing = <1 2 3>;
+
+ slot@0 {
+ reg = <0>;
+ bus-width = <4>;
+ /* See board-specific dts files for GPIOs */
+ };
+ };
+
+ spi_0: spi@12d20000 {
+ status = "disabled";
+ };
+
+ spi_1: spi@12d30000 {
+ gpios = <&gpa2 4 2 3 0>,
+ <&gpa2 6 2 3 0>,
+ <&gpa2 7 2 3 0>;
+ samsung,spi-src-clk = <0>;
+ num-cs = <1>;
+ };
+
+ spi_2: spi@12d40000 {
+ status = "disabled";
+ };
+
+ hdmi {
+ hpd-gpio = <&gpx3 7 0xf 1 3>;
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ power {
+ label = "Power";
+ gpios = <&gpx1 3 0 0x10000 0>;
+ linux,code = <116>; /* KEY_POWER */
+ gpio-key,wakeup;
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
new file mode 100644
index 000000000000..17dd951c1cd2
--- /dev/null
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -0,0 +1,43 @@
+/*
+ * Google Snow board device tree source
+ *
+ * Copyright (c) 2012 Google, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+/dts-v1/;
+/include/ "exynos5250.dtsi"
+/include/ "cros5250-common.dtsi"
+
+/ {
+ model = "Google Snow";
+ compatible = "google,snow", "samsung,exynos5250";
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ lid-switch {
+ label = "Lid";
+ gpios = <&gpx3 5 0 0x10000 0>;
+ linux,input-type = <5>; /* EV_SW */
+ linux,code = <0>; /* SW_LID */
+ debounce-interval = <1>;
+ gpio-key,wakeup;
+ };
+ };
+
+ /*
+ * On Snow we've got SIP WiFi and so can keep drive strengths low to
+ * reduce EMI.
+ */
+ dwmmc3@12230000 {
+ slot@0 {
+ gpios = <&gpc4 0 2 0 0>, <&gpc4 1 2 3 0>,
+ <&gpc4 3 2 3 0>, <&gpc4 4 2 3 0>,
+ <&gpc4 5 2 3 0>, <&gpc4 6 2 3 0>;
+ };
+ };
+};