linux/arch/arm/boot/dts/at91sam9x5cm.dtsi
Richard Genoud 6901d947be ARM: at91/at91sam9x5cm: add 1-wire chip on CM board
This add the 1-wire chip present on the CM board to the DTS.
As the pin is also used by leds, it's disabled by default.
If the board really wants it, it can be enabled in the board DTS.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-21 16:07:15 +01:00

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/*
* at91sam9x5cm.dtsi - Device Tree Include file for AT91SAM9x5 CPU Module
*
* Copyright (C) 2012 Atmel,
* 2012 Nicolas Ferre <nicolas.ferre@atmel.com>
*
* Licensed under GPLv2 or later.
*/
/ {
memory {
reg = <0x20000000 0x8000000>;
};
clocks {
#address-cells = <1>;
#size-cells = <1>;
ranges;
main_clock: clock@0 {
compatible = "atmel,osc", "fixed-clock";
clock-frequency = <12000000>;
};
};
ahb {
apb {
pinctrl@fffff400 {
1wire_cm {
pinctrl_1wire_cm: 1wire_cm-0 {
atmel,pins = <1 18 0x0 0x2>; /* PB18 multidrive, conflicts with led */
};
};
};
};
nand0: nand@40000000 {
nand-bus-width = <8>;
nand-ecc-mode = "hw";
atmel,has-pmecc; /* Enable PMECC */
atmel,pmecc-cap = <2>;
atmel,pmecc-sector-size = <512>;
nand-on-flash-bbt;
status = "okay";
at91bootstrap@0 {
label = "at91bootstrap";
reg = <0x0 0x40000>;
};
uboot@40000 {
label = "u-boot";
reg = <0x40000 0x80000>;
};
ubootenv@c0000 {
label = "U-Boot Env";
reg = <0xc0000 0x140000>;
};
kernel@200000 {
label = "kernel";
reg = <0x200000 0x600000>;
};
rootfs@800000 {
label = "rootfs";
reg = <0x800000 0x1f800000>;
};
};
};
leds {
compatible = "gpio-leds";
pb18 {
label = "pb18";
gpios = <&pioB 18 1>;
linux,default-trigger = "heartbeat";
};
pd21 {
label = "pd21";
gpios = <&pioD 21 0>;
};
};
1wire_cm {
compatible = "w1-gpio";
gpios = <&pioB 18 0>;
linux,open-drain;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_1wire_cm>;
status = "okay";
};
};