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ARM: at91/at91sam9x5cm: add 1-wire chip on CM board

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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>
This commit is contained in:
Richard Genoud 2013-03-20 12:23:40 +01:00 committed by Nicolas Ferre
parent 62a870cbc9
commit 6901d947be
1 changed files with 20 additions and 0 deletions
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20
arch/arm/boot/dts/at91sam9x5cm.dtsi
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@ -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";
};
};