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ARM: sun5i: chip: add a node for the w1 gpio controller

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The CHIP uses a 1-Wire bus to discover the DIPs. Enable the bus in the DT.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Antoine Tenart 2015-10-01 16:39:43 +02:00 committed by Maxime Ripard
parent bb1ea8bf1b
commit 74194620ad
1 changed files with 14 additions and 0 deletions
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14
arch/arm/boot/dts/sun5i-r8-chip.dts
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@ -81,6 +81,13 @@
pinctrl-0 = <&chip_wifi_reg_on_pin>;
reset-gpios = <&pio 2 19 GPIO_ACTIVE_LOW>; /* PC19 */
};
onewire {
compatible = "w1-gpio";
gpios = <&pio 3 2 GPIO_ACTIVE_HIGH>; /* PD2 */
pinctrl-names = "default";
pinctrl-0 = <&chip_w1_pin>;
};
};
&be0 {
@ -181,6 +188,13 @@
allwinner,drive = <SUN4I_PINCTRL_10_MA>;
allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
};
chip_w1_pin: chip_w1_pin@0 {
allwinner,pins = "PD2";
allwinner,function = "gpio_in";
allwinner,drive = <SUN4I_PINCTRL_10_MA>;
allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
};
};
&reg_dcdc2 {