ARM: at91: dt: sam9261: Device Tree support for the at91sam9261ek

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@traphandler.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

2 files changed, 213 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index ce58477cfa33..c8aea260bd05 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 000000000000..2ce527e70c7a
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9261ek.dts
@@ -0,0 +1,211 @@
+/*
+ * at91sam9261ek.dts - Device Tree file for Atmel at91sam9261 reference board
+ *
+ *  Copyright (C) 2013 Jean-Jacques Hiblot <jjhiblot@traphandler.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@00500000 {
+                        status = "okay";
+                };
+
+                fb0: fb@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@40000000 {
+                        nand-bus-width = <8>;
+                        nand-ecc-mode = "soft";
+                        nand-on-flash-bbt;
+                        status = "okay";
+
+                        at91bootstrap@0 {
+                                label = "at91bootstrap";
+                                reg = <0x0 0x40000>;
+                        };
+
+                        bootloader@40000 {
+                                label = "bootloader";
+                                reg = <0x40000 0x80000>;
+                        };
+
+                        bootloaderenv@c0000 {
+                                label = "bootloader env";
+                                reg = <0xc0000 0xc0000>;
+                        };
+
+                        dtb@180000 {
+                                label = "device tree";
+                                reg = <0x180000 0x80000>;
+                        };
+
+                        kernel@200000 {
+                                label = "kernel";
+                                reg = <0x200000 0x600000>;
+                        };
+
+                        rootfs@800000 {
+                                label = "rootfs";
+                                reg = <0x800000 0x0f800000>;
+                        };
+                };
+
+                apb {
+                        usb1: gadget@fffa4000 {
+                                atmel,vbus-gpio = <&pioB 29 GPIO_ACTIVE_HIGH>;
+                                status = "okay";
+                        };
+
+                        spi0: spi@fffc8000 {
+                                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>;
+                                };
+
+                                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@fffff200 {
+                                status = "okay";
+                        };
+
+                        watchdog@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;
+                };
+        };
+};