From: Ken Lin <ken.lin@advantech.com.tw>
Date: Fri, 12 Aug 2016 17:45:11 +0000 (-0400)
Subject: ARM: dts: imx6q-bx50v3: configure unused pca953x pins
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=118e81cb7307934870721312da5443913a14faa2;p=linux.git

ARM: dts: imx6q-bx50v3: configure unused pca953x pins

At power on, pca953x GPIO pins are configured as input and may cause
unexpected interrupts. Configure the unused pins as GPO low to
avoid unexpected interrupts.

Signed-off-by: Ken Lin <ken.lin@advantech.com.tw>
Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm/boot/dts/imx6q-b450v3.dts b/arch/arm/boot/dts/imx6q-b450v3.dts
index f0a2be5268e35..78bfc1a307d60 100644
--- a/arch/arm/boot/dts/imx6q-b450v3.dts
+++ b/arch/arm/boot/dts/imx6q-b450v3.dts
@@ -89,3 +89,19 @@
 		};
 	};
 };
+
+&pca9539 {
+	P04 {
+		gpio-hog;
+		gpios = <4 0>;
+		output-low;
+		line-name = "PCA9539-P04";
+	};
+
+	P05 {
+		gpio-hog;
+		gpios = <5 0>;
+		output-low;
+		line-name = "PCA9539-P05";
+	};
+};
diff --git a/arch/arm/boot/dts/imx6q-b650v3.dts b/arch/arm/boot/dts/imx6q-b650v3.dts
index 33cb71acadcce..d853887254268 100644
--- a/arch/arm/boot/dts/imx6q-b650v3.dts
+++ b/arch/arm/boot/dts/imx6q-b650v3.dts
@@ -89,3 +89,12 @@
 		};
 	};
 };
+
+&pca9539 {
+	P05 {
+		gpio-hog;
+		gpios = <5 0>;
+		output-low;
+		line-name = "PCA9539-P05";
+	};
+};
diff --git a/arch/arm/boot/dts/imx6q-bx50v3.dtsi b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
index cf3fd31e34060..e4a415fd899b6 100644
--- a/arch/arm/boot/dts/imx6q-bx50v3.dtsi
+++ b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
@@ -183,6 +183,76 @@
 				interrupt-controller;
 				interrupt-parent = <&gpio2>;
 				interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
+
+				P06 {
+					gpio-hog;
+					gpios = <6 0>;
+					output-low;
+					line-name = "PCA9539-P06";
+				};
+
+				P07 {
+					gpio-hog;
+					gpios = <7 0>;
+					output-low;
+					line-name = "PCA9539-P07";
+				};
+
+				P10 {
+					gpio-hog;
+					gpios = <8 0>;
+					output-low;
+					line-name = "PCA9539-P10";
+				};
+
+				P11 {
+					gpio-hog;
+					gpios = <9 0>;
+					output-low;
+					line-name = "PCA9539-P11";
+				};
+
+				P12 {
+					gpio-hog;
+					gpios = <10 0>;
+					output-low;
+					line-name = "PCA9539-P12";
+				};
+
+				P13 {
+					gpio-hog;
+					gpios = <11 0>;
+					output-low;
+					line-name = "PCA9539-P13";
+				};
+
+				P14 {
+					gpio-hog;
+					gpios = <12 0>;
+					output-low;
+					line-name = "PCA9539-P14";
+				};
+
+				P15 {
+					gpio-hog;
+					gpios = <13 0>;
+					output-low;
+					line-name = "PCA9539-P15";
+				};
+
+				P16 {
+					gpio-hog;
+					gpios = <14 0>;
+					output-low;
+					line-name = "PCA9539-P16";
+				};
+
+				P17 {
+					gpio-hog;
+					gpios = <15 0>;
+					output-low;
+					line-name = "PCA9539-P17";
+				};
 			};
 		};