[U-Boot] [PATCH RESEND 2/9] sunxi: chip: Add 1-wire node

[Maxime Ripard]

The CHIP uses on PD2 (a pin incorrectly called LCD_D2) a bitbanged 1-Wire
bus to discover the adapters plug into it.

Add that bus to the device tree.

Signed-off-by: Maxime Ripard <maxime.rip...@free-electrons.com>
---
 arch/arm/dts/sun5i-r8-chip.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+), 0 deletions(-)

diff --git a/arch/arm/dts/sun5i-r8-chip.dts b/arch/arm/dts/sun5i-r8-chip.dts
index 7a8cc2727960..fdba47c2bc33 100644
--- a/arch/arm/dts/sun5i-r8-chip.dts
+++ b/arch/arm/dts/sun5i-r8-chip.dts
@@ -59,6 +59,7 @@
                i2c2 = &i2c2;
                serial0 = &uart1;
                serial1 = &uart3;
+               w10 = &w1;
        };
 
        chosen {
@@ -76,6 +77,13 @@
                gpio = <&pio 2 19 GPIO_ACTIVE_HIGH>; /* PC19 */
                enable-active-high;
        };
+
+       w1: onewire {
+               compatible = "w1-gpio";
+               gpios = <&pio 3 2 GPIO_ACTIVE_HIGH>; /* PD2 */
+               pinctrl-names = "default";
+               pinctrl-0 = <&chip_w1_pin>;
+       };
 };
 
 &be0 {
@@ -175,6 +183,13 @@
                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 0.8.11
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