linux-kernel - Re: ARM: dts: add board dts file for EXYNOS4412 based TINY4412 board

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Message-ID: <52827DBC.9040606@gmail.com>
Date:	Tue, 12 Nov 2013 13:13:00 -0600
From:	Rob Herring <robherring2@...il.com>
To:	Alex Ling <kasimling@...il.com>, mark.rutland@....com,
	linux@....linux.org.uk, swarren@...dotorg.org,
	ijc+devicetree@...lion.org.uk, kgene.kim@...sung.com,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: Re: ARM: dts: add board dts file for EXYNOS4412 based TINY4412 board

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@...il.com>
> ---
>  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@...il.com>
> + *
> + * 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@...70000 {
> +		status = "okay";
> +	};
> +
> +	sdhci@...30000 {
> +		bus-width = <4>;
> +		pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
> +		pinctrl-names = "default";
> +		status = "okay";
> +	};
> +
> +	serial@...00000 {
> +		status = "okay";
> +	};
> +
> +	serial@...10000 {
> +		status = "okay";
> +	};
> +
> +	serial@...20000 {
> +		status = "okay";
> +	};
> +
> +	serial@...30000 {
> +		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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