From b27d5250062ef7438f86d8ab6d0549dc912f4267 Mon Sep 17 00:00:00 2001
From: Thierry Reding <treding@nvidia.com>
Date: Thu, 23 Feb 2017 18:30:53 +0100
Subject: [PATCH] arm64: tegra: Add GPIO expanders on P2771

The P2771 development board expands the number of GPIOs via two I2C
chips.

Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 .../boot/dts/nvidia/tegra186-p2771-0000.dts   | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts b/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts
index 78442ea81260..8daadadec63a 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts
@@ -18,6 +18,28 @@
 			compatible = "ti,ina3221";
 			reg = <0x43>;
 		};
+
+		exp1: gpio@74 {
+			compatible = "ti,tca9539";
+			reg = <0x74>;
+
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_MAIN_GPIO(Y, 0) GPIO_ACTIVE_LOW>;
+
+			#gpio-cells = <2>;
+			gpio-controller;
+		};
+
+		exp2: gpio@77 {
+			compatible = "ti,tca9539";
+			reg = <0x77>;
+
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_MAIN_GPIO(Y, 6) GPIO_ACTIVE_LOW>;
+
+			#gpio-cells = <2>;
+			gpio-controller;
+		};
 	};
 
 	/* SDMMC1 (SD/MMC) */
-- 
2.20.1