[PATCH 2/6] ARM: sun5i: chip: add a node for the w1 gpio controller

From: Maxime Ripard
Date: Mon Oct 17 2016 - 08:00:24 EST


From: Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx>

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

Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/sun5i-r8-chip.dts | 14 ++++++++++++++
1 file changed, 14 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/sun5i-r8-chip.dts b/arch/arm/boot/dts/sun5i-r8-chip.dts
index e616084b9495..059d86865b73 100644
--- a/arch/arm/boot/dts/sun5i-r8-chip.dts
+++ b/arch/arm/boot/dts/sun5i-r8-chip.dts
@@ -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 {
--
git-series 0.8.10