On 11/12/2013 09:02 AM, Alex Ling wrote:
> Add a minimal board dts file for EXYNOS4412 based FriendlyARM's
> TINY4412 board. This patch including adds the node to support
> peripherals like UART, SD card on SDMMC2 port, and this patch
> adds GPIO connected LEDS and configure its properties like
> following:
> LED1: use 'heartbeat' trigger, blinking while the board is running.
> LED4: use 'mmc0' trigger, on when mmc0 is accessing.
> LED2 and LED3 can be controlled from userspace.
Please send patches with [PATCH] prefix.
> Signed-off-by: Alex Ling <kasimling@xxxxxxxxx>
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/exynos4412-tiny4412.dts | 89 +++++++++++++++++++++++++++++
> 2 files changed, 90 insertions(+)
> create mode 100644 arch/arm/boot/dts/exynos4412-tiny4412.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 802720e..91671a2 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -59,6 +59,7 @@ dtb-$(CONFIG_ARCH_EXYNOS) += exynos4210-origen.dtb \
> exynos4412-odroidx.dtb \
> exynos4412-origen.dtb \
> exynos4412-smdk4412.dtb \
> + exynos4412-tiny4412.dtb \
> exynos4412-trats2.dtb \
> exynos5250-arndale.dtb \
> exynos5250-smdk5250.dtb \
> diff --git a/arch/arm/boot/dts/exynos4412-tiny4412.dts b/arch/arm/boot/dts/exynos4412-tiny4412.dts
> new file mode 100644
> index 0000000..78ace14
> --- /dev/null
> +++ b/arch/arm/boot/dts/exynos4412-tiny4412.dts
> @@ -0,0 +1,89 @@
> +/*
> + * FriendlyARM's Exynos4412 based TINY4412 board device tree source
> + *
> + * Copyright (c) 2013 Alex Ling <kasimling@xxxxxxxxx>
> + *
> + * Device tree source file for FriendlyARM's TINY4412 board which is based on
> + * Samsung's Exynos4412 SoC.
> + *
> + * 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 "exynos4412.dtsi"
> +
> +/ {
> + model = "FriendlyARM TINY4412 board based on Exynos4412";
> + compatible = "friendlyarm,tiny4412", "samsung,exynos4412";
The compatible string needs to be documented.
Rob
> +
> + memory {
> + reg = <0x40000000 0x40000000>;
> + };
> +
> + leds {
> + compatible = "gpio-leds";
> + led1 {
> + label = "led1:heart";
> + gpios = <&gpm4 0 1>;
> + default-state = "off";
> + linux,default-trigger = "heartbeat";
> + };
> + led2 {
> + label = "led2";
> + gpios = <&gpm4 1 1>;
> + default-state = "off";
> + };
> + led3 {
> + label = "led3";
> + gpios = <&gpm4 2 1>;
> + default-state = "off";
> + };
> + led4 {
> + label = "led4:mmc0";
> + gpios = <&gpm4 3 1>;
> + default-state = "off";
> + linux,default-trigger = "mmc0";
> + };
> + };
> +
> + rtc@10070000 {
> + status = "okay";
> + };
> +
> + sdhci@12530000 {
> + bus-width = <4>;
> + pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
> + pinctrl-names = "default";
> + status = "okay";
> + };
> +
> + serial@13800000 {
> + status = "okay";
> + };
> +
> + serial@13810000 {
> + status = "okay";
> + };
> +
> + serial@13820000 {
> + status = "okay";
> + };
> +
> + serial@13830000 {
> + status = "okay";
> + };
> +
> + fixed-rate-clocks {
> + xxti {
> + compatible = "samsung,clock-xxti";
> + clock-frequency = <0>;
> + };
> +
> + xusbxti {
> + compatible = "samsung,clock-xusbxti";
> + clock-frequency = <24000000>;
> + };
> + };
> +};
>
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