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authorRichard Genoud <richard.genoud@gmail.com>2013-03-20 12:23:40 +0100
committerNicolas Ferre <nicolas.ferre@atmel.com>2013-03-21 16:07:15 +0100
commit6901d947be5ba1245a0f63271355b95f9056a362 (patch)
treeff7573da0319323016cd80a7b4929b069a4358d5 /arch/arm
parent62a870cbc9d9839aef18ff6702d18994c1973961 (diff)
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>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/boot/dts/at91sam9x5cm.dtsi20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/at91sam9x5cm.dtsi b/arch/arm/boot/dts/at91sam9x5cm.dtsi
index 4027ac7e450..347a74a857f 100644
--- a/arch/arm/boot/dts/at91sam9x5cm.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5cm.dtsi
@@ -24,6 +24,16 @@
};
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";
@@ -74,4 +84,14 @@
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";
+ };
+
};