Commit a1046620 authored Feb 27, 2015 by Geert Uytterhoeven Committed by Simon Horman Mar 07, 2015

ARM: shmobile: ape6evm dts: Enable pull-up for GPIO switches



The switches on r8a73a4/ape6evm do not have pull-up registers.  The
schematics say: "Need to use APE6 internal PullUp", hence enable pull-up
using pinctrl.

Without this, the switches don't really work, as the GPIO inputs are
more likely to pick up ghost signals through capacitive coupling than
actual keypresses.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

parent 75a499a6

arch/arm/boot/dts/r8a73a4-ape6evm.dts

+9 −0

Original line number	Diff line number	Diff line
		@@ -123,6 +123,9 @@
		keyboard {
		compatible = "gpio-keys";

		pinctrl-names = "default";
		pinctrl-0 = <&keyboard_pins>;

		zero-key {
		gpios = <&pfc 324 GPIO_ACTIVE_LOW>;
		linux,code = <KEY_0>;
		@@ -208,6 +211,12 @@
		renesas,groups = "sdhi1_data4", "sdhi1_ctrl";
		renesas,function = "sdhi1";
		};

		keyboard_pins: keyboard {
		renesas,pins = "PORT324", "PORT325", "PORT326", "PORT327",
		"PORT328", "PORT329";
		bias-pull-up;
		};
		};

		&mmcif0 {

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