openwrt/target/linux/mvebu/patches-5.4/023-arm64-dts-add-uDPU-i2c-bus-recovery.patch

From 11b2af36cc874027ce701c5784cb957c99c7de3d Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Wed, 6 May 2020 10:40:37 +0100
Subject: [PATCH] arm64: dts: add uDPU i2c bus recovery

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
---
 .../boot/dts/marvell/armada-3720-uDPU.dts     | 22 +++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

--- a/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
@@ -117,18 +117,36 @@
 	};
 };
 
+&pinctrl_nb {
+	i2c1_recovery_pins: i2c1-recovery-pins {
+		groups = "i2c1";
+		function = "gpio";
+	};
+
+	i2c2_recovery_pins: i2c2-recovery-pins {
+		groups = "i2c2";
+		function = "gpio";
+	};
+};
+
 &i2c0 {
 	status = "okay";
-	pinctrl-names = "default";
+	pinctrl-names = "default", "recovery";
 	pinctrl-0 = <&i2c1_pins>;
+	pinctrl-1 = <&i2c1_recovery_pins>;
 	/delete-property/mrvl,i2c-fast-mode;
+	scl-gpios = <&gpionb 0 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	sda-gpios = <&gpionb 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 };
 
 &i2c1 {
 	status = "okay";
-	pinctrl-names = "default";
+	pinctrl-names = "default", "recovery";
 	pinctrl-0 = <&i2c2_pins>;
+	pinctrl-1 = <&i2c2_recovery_pins>;
 	/delete-property/mrvl,i2c-fast-mode;
+	scl-gpios = <&gpionb 2 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	sda-gpios = <&gpionb 3 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 
 	lm75@48 {
 		status = "okay";