Subject: [PATCH v5 6/9] at91: dt: sam9261: Device Tree support for the at91sam9261ek

From: [email-masked] (Alexandre Belloni)
Date: Mon, 3 Mar 2014 19:38:00 +0100

On 03/03/2014 at 11:05:59 +0100, Jean-Jacques Hiblot wrote :
> This patch implements a DTS to boot a at91sam9261ek with a dt-enabled
> kernel (at91_dt_defconfig).
> supported features are:
> * dbgu
> * lcdc
> * usb host
> * usb gadget,
> * spi dataflash
> * nand flash
> * touchscreen
> * leds
> * user buttons
> 
> In the TODO list:
> * dm9000 (ethernet)
> * audio
> * mmc
> 
> Signed-off-by: Jean-Jacques Hiblot <[email-masked]>
> ---
>  arch/arm/boot/dts/Makefile          |   2 +
>  arch/arm/boot/dts/at91sam9261ek.dts | 204 ++++++++++++++++++++++++++++++++++++
>  2 files changed, 206 insertions(+)
>  create mode 100644 arch/arm/boot/dts/at91sam9261ek.dts
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 0320303..f496473 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -12,6 +12,8 @@ dtb-$(CONFIG_ARCH_AT91) += ethernut5.dtb
>  dtb-$(CONFIG_ARCH_AT91) += evk-pro3.dtb
>  dtb-$(CONFIG_ARCH_AT91) += tny_a9260.dtb
>  dtb-$(CONFIG_ARCH_AT91) += usb_a9260.dtb
> +# sam9261
> +dtb-$(CONFIG_ARCH_AT91) += at91sam9261ek.dtb
>  # sam9263
>  dtb-$(CONFIG_ARCH_AT91) += at91sam9263ek.dtb
>  dtb-$(CONFIG_ARCH_AT91) += tny_a9263.dtb
> diff --git a/arch/arm/boot/dts/at91sam9261ek.dts b/arch/arm/boot/dts/at91sam9261ek.dts
> new file mode 100644
> index 0000000..03adb7f
> --- /dev/null
> +++ b/arch/arm/boot/dts/at91sam9261ek.dts
> @@ -0,0 +1,204 @@
> +/*
> + * at91sam9261ek.dts - Device Tree file for Atmel at91sam9261 reference board
> + *
> + *  Copyright (C) 2013 Jean-Jacques Hiblot <[email-masked]>
> + *
> + * Licensed under GPLv2 only.
> + */
> +/dts-v1/;
> +#include "at91sam9261.dtsi"
> +
> +/ {
> +	model = "Atmel at91sam9261ek";
> +	compatible = "atmel,at91sam9261ek", "atmel,at91sam9261", "atmel,at91sam9";
> +
> +	chosen {
> +		bootargs = "console=ttyS0,115200 rootfstype=ubifs ubi.mtd=5 root=ubi0:rootfs rw";
> +	};
> +
> +	memory {
> +		reg = <0x20000000 0x4000000>;
> +	};
> +
> +	clocks {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		main_clock: clock at 0 {
> +			compatible = "atmel,osc", "fixed-clock";
> +			clock-frequency = <18432000>;
> +		};
> +	};
> +
> +	ahb {
> +		usb0: ohci at 00500000 {
> +			status = "okay";
> +		};
> +
> +		fb0: fb at 0x00600000 {
> +			display = <&display0>;
> +			atmel,power-control-gpio = <&pioA 12 GPIO_ACTIVE_LOW>;
> +			status = "okay";
> +
> +			display0: display {
> +				bits-per-pixel = <16>;
> +				atmel,lcdcon-backlight;
> +				atmel,dmacon = <0x1>;
> +				atmel,lcdcon2 = <0x80008002>;
> +				atmel,guard-time = <1>;
> +				atmel,lcd-wiring-mode = "BRG";
> +
> +				display-timings {
> +					native-mode = <&timing0>;
> +					timing0: timing0 {
> +						clock-frequency = <4965000>;
> +						hactive = <240>;
> +						vactive = <320>;
> +						hback-porch = <1>;
> +						hfront-porch = <33>;
> +						vback-porch = <1>;
> +						vfront-porch = <0>;
> +						hsync-len = <5>;
> +						vsync-len = <1>;
> +						hsync-active = <1>;
> +						vsync-active = <1>;
> +					};
> +				};
> +			};
> +		};
> +
> +		nand0: nand at 40000000 {
> +			nand-bus-width = <8>;
> +			nand-ecc-mode = "soft";
> +			nand-on-flash-bbt;
> +			status = "okay";
> +
> +			at91bootstrap at 0 {
> +				label = "at91bootstrap";
> +				reg = <0x0 0x40000>;
> +			};
> +
> +			bootloader at 40000 {
> +				label = "bootloader";
> +				reg = <0x40000 0x80000>;
> +			};
> +
> +			bootloaderenv at c0000 {
> +				label = "bootloader env";
> +				reg = <0xc0000 0xc0000>;
> +			};
> +
> +			dtb at 180000 {
> +				label = "device tree";
> +				reg = <0x180000 0x80000>;
> +			};
> +
> +			kernel at 200000 {
> +				label = "kernel";
> +				reg = <0x200000 0x600000>;
> +			};
> +
> +			rootfs at 800000 {
> +				label = "rootfs";
> +				reg = <0x800000 0x0f800000>;
> +			};
> +		};
> +
> +		apb {
> +			usb1: gadget at fffa4000 {
> +				atmel,vbus-gpio = <&pioB 29 GPIO_ACTIVE_HIGH>;
> +				status = "okay";
> +			};

Nit: add a white line between nodes please, same for a few nodes below.

> +			spi0: spi at fffc8000 {
> +				cs-gpios = <&pioA 3 0>, <0>, <&pioA 28 0>, <0>;
> +				status = "okay";
> +
> +				mtd_dataflash at 0 {
> +					compatible = "atmel,at45", "atmel,dataflash";
> +					reg = <0>;
> +					spi-max-frequency = <15000000>;
> +				};
> +				tsc2046 at 0 {
> +					reg = <2>;
> +					compatible = "ti,ads7843";
> +					interrupts-extended = <&pioC 2 IRQ_TYPE_EDGE_BOTH>;
> +					spi-max-frequency = <3000000>;
> +					pendown-gpio = <&pioC 2 GPIO_ACTIVE_HIGH>;
> +
> +					ti,x-min = /bits/ 16 <150>;
> +					ti,x-max = /bits/ 16 <3830>;
> +					ti,y-min = /bits/ 16 <190>;
> +					ti,y-max = /bits/ 16 <3830>;
> +					ti,vref-delay-usecs = /bits/ 16 <450>;
> +					ti,x-plate-ohms = /bits/ 16 <450>;
> +					ti,y-plate-ohms = /bits/ 16 <250>;
> +					ti,pressure-max = /bits/ 16 <15000>;
> +					ti,debounce-rep = /bits/ 16 <0>;
> +					ti,debounce-tol = /bits/ 16 <65535>;
> +					ti,debounce-max = /bits/ 16 <1>;
> +
> +					linux,wakeup;
> +				};
> +			};
> +
> +			dbgu: serial at fffff200 {
> +				status = "okay";
> +			};
> +
> +			watchdog at fffffd40 {
> +				status = "okay";
> +			};
> +
> +		};
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		ds8 {
> +			label = "ds8";
> +			gpios = <&pioA 13 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "none";
> +		};
> +		ds7 {
> +			label = "ds7";
> +			gpios = <&pioA 14 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "nand-disk";
> +		};
> +		ds1 {
> +			label = "ds1";
> +			gpios = <&pioA 23 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "heartbeat";
> +		};
> +	};
> +
> +	gpio_keys {
> +		compatible = "gpio-keys";
> +
> +		button_0 {
> +			label = "button_0";
> +			gpios = <&pioA 27 GPIO_ACTIVE_LOW>;
> +			linux,code = <256>;
> +			gpio-key,wakeup;
> +		};
> +		button_1 {
> +			label = "button_1";
> +			gpios = <&pioA 26 GPIO_ACTIVE_LOW>;
> +			linux,code = <257>;
> +			gpio-key,wakeup;
> +		};
> +		button_2 {
> +			label = "button_2";
> +			gpios = <&pioA 25 GPIO_ACTIVE_LOW>;
> +			linux,code = <258>;
> +			gpio-key,wakeup;
> +		};
> +		button_3 {
> +			label = "button_3";
> +			gpios = <&pioA 24 GPIO_ACTIVE_LOW>;
> +			linux,code = <259>;
> +			gpio-key,wakeup;
> +		};
> +	};
> +};
> -- 
> 1.9.0
> 

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com