mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

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>
This commit is contained in:
Ken Lin 2016-08-12 13:45:11 -04:00 committed by Shawn Guo
parent b5ca028fe9
commit 118e81cb73
3 changed files with 95 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/arm/boot/dts/imx6q-b450v3.dts
View File

@ -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";
};
};

9
arch/arm/boot/dts/imx6q-b650v3.dts
View File

@ -89,3 +89,12 @@
};
};
};
&pca9539 {
P05 {
gpio-hog;
gpios = <5 0>;
output-low;
line-name = "PCA9539-P05";
};
};

70
arch/arm/boot/dts/imx6q-bx50v3.dtsi
View File

@ -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";
};
};
};