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Message-ID: <20140317113811.GD9558@ns203013.ovh.net>
Date: Mon, 17 Mar 2014 12:38:11 +0100
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
To: Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Cc: nicolas.ferre@...el.com, b.brezillon@...rkiz.com,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
gregory.clement@...e-electrons.com, devicetree@...r.kernel.org,
thomas.petazzoni@...e-electrons.com,
alexandre.belloni@...e-electrons.com
Subject: Re: [PATCH v5 6/9] at91: dt: sam9261: Device Tree support for the
at91sam9261ek
On 11:05 Mon 03 Mar , 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 <jjhiblot@...phandler.com>
> ---
> 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 <jjhiblot@...phandler.com>
> + *
> + * 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@0 {
> + compatible = "atmel,osc", "fixed-clock";
> + clock-frequency = <18432000>;
> + };
> + };
> +
> + ahb {
> + usb0: ohci@...00000 {
> + status = "okay";
> + };
> +
> + fb0: fb@...0600000 {
> + 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@...00000 {
> + nand-bus-width = <8>;
> + nand-ecc-mode = "soft";
> + nand-on-flash-bbt;
> + status = "okay";
> +
> + at91bootstrap@0 {
> + label = "at91bootstrap";
> + reg = <0x0 0x40000>;
> + };
> +
> + bootloader@...00 {
> + label = "bootloader";
> + reg = <0x40000 0x80000>;
> + };
> +
> + bootloaderenv@...00 {
> + label = "bootloader env";
> + reg = <0xc0000 0xc0000>;
> + };
> +
> + dtb@...000 {
> + label = "device tree";
> + reg = <0x180000 0x80000>;
> + };
> +
> + kernel@...000 {
> + label = "kernel";
> + reg = <0x200000 0x600000>;
> + };
> +
> + rootfs@...000 {
> + label = "rootfs";
> + reg = <0x800000 0x0f800000>;
> + };
> + };
> +
> + apb {
> + usb1: gadget@...a4000 {
> + atmel,vbus-gpio = <&pioB 29 GPIO_ACTIVE_HIGH>;
> + status = "okay";
> + };
> + spi0: spi@...c8000 {
if you use cs-gpios you do not need to respect the hw order but ok just drop
the last 0
> + cs-gpios = <&pioA 3 0>, <0>, <&pioA 28 0>, <0>;
> + status = "okay";
> +
> + mtd_dataflash@0 {
> + compatible = "atmel,at45", "atmel,dataflash";
> + reg = <0>;
> + spi-max-frequency = <15000000>;
> + };
please add empty line
> + tsc2046@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@...ff200 {
> + status = "okay";
> + };
> +
> + watchdog@...ffd40 {
> + status = "okay";
> + };
> +
> + };
> + };
> +
> + leds {
> + compatible = "gpio-leds";
> +
> + ds8 {
> + label = "ds8";
> + gpios = <&pioA 13 GPIO_ACTIVE_LOW>;
> + linux,default-trigger = "none";
no-need drop it
please fix the missing empty line
> + };
> + 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
>
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