@@ -9,6 +9,7 @@
/dts-v1/;
#include "r8a7779.dtsi"
#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/irq.h>
/ {
@@ -66,6 +67,51 @@ ethernet@18000000 {
vdd33a-supply = <&fixedregulator3v3>;
};
+ keyboard-irq {
+ compatible = "gpio-keys";
+
+ pinctrl-0 = <&keyboard_irq_pins>;
+ pinctrl-names = "default";
+
+ interrupt-parent = <&gpio0>;
+
+ key-1 {
+ interrupts = <17 IRQ_TYPE_EDGE_FALLING>;
+ linux,code = <KEY_1>;
+ label = "SW1-1";
+ wakeup-source;
+ debounce-interval = <20>;
+ };
+ key-2 {
+ interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
+ linux,code = <KEY_2>;
+ label = "SW1-2";
+ wakeup-source;
+ debounce-interval = <20>;
+ };
+ };
+
+ keyboard-gpio {
+ compatible = "gpio-keys-polled";
+ poll-interval = <50>;
+
+ pinctrl-0 = <&keyboard_gpio_pins>;
+ pinctrl-names = "default";
+
+ key-3 {
+ gpios = <&gpio0 19 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_3>;
+ label = "SW1-3";
+ debounce-interval = <20>;
+ };
+ key-4 {
+ gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_4>;
+ label = "SW1-4";
+ debounce-interval = <20>;
+ };
+ };
+
leds {
compatible = "gpio-leds";
led2 {
@@ -161,6 +207,14 @@ endpoint {
};
};
+&gpio0 {
+ keyboard-irq-hog {
+ gpio-hog;
+ gpios = <17 GPIO_ACTIVE_LOW>, <18 GPIO_ACTIVE_LOW>;
+ input;
+ };
+};
+
&irqpin0 {
status = "okay";
};
@@ -223,6 +277,15 @@ hspi0_pins: hspi0 {
groups = "hspi0";
function = "hspi0";
};
+
+ keyboard_irq_pins: keyboard-irq {
+ pins = "GP_0_17", "GP_0_18";
+ bias-pull-up;
+ };
+ keyboard_gpio_pins: keyboard-gpio {
+ pins = "GP_0_19", "GP_0_20";
+ bias-pull-up;
+ };
};
&sata {
Describe the four General Purpose Switches on the Marzen development board, so they can be used for user input and/or for wake-up from s2ram. The GPIO block on R-Car H1 does not support triggering interrupts on both edges of a changing input signal, hence one cannot use gpio-keys with gpios properties. Instead, one of two alternatives needs to be used: 1. Use gpio-keys with interrupts instead of gpios properties, at the expense of receiving only key presses (release events will be auto-generated), 2. Use gpio-keys-polled with gpios properties, at the expense of making these keys unusable as wake-up sources. As the DTS for the Marzen development board serves mainly as an example, the approach taken is to use the first alternative for the first two switches, and the second alternative for the last two switches. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- For proper operation, this depends on "[PATCH] pinctrl: renesas: r8a7779: Add bias pinconf support" https://lore.kernel.org/r/dd966cfc916ef881051ec53bc3393dce7eea8e03.1679328215.git.geert+renesas@glider.be To be queued in renesas-devel-for-v6.4. arch/arm/boot/dts/r8a7779-marzen.dts | 63 ++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+)