Add an interrupt-controlled keyboard to test operation of the Interrupt
Controller for External Devices (INTC-EX) on the Spider development
board.
Test procedure:
- Run "evtest" (select device event number "0"),
- Pull one of the following signals on the Spider Breakout Board low
to trigger the corresponding interrupt and keypress (key release is
automatic):
- Test point CP18 -> IRQ0 (KEY_0),
- Test point CP17 -> IRQ1 (KEY_1),
- CN37 pin 4 -> IRQ4 (KEY_4),
- CN37 pin 2 -> IRQ5 (KEY_5).
GND is available on e.g. pin 8 of CN37 (MSIOF0 PIN HEADER).
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Not intended for upstream merge.
I do not have physical access to a Spider development board.
Thanks for testing!
Note that this IRQ conflicts with operation of LED7, so do not apply the
LED patch while testing.
---
.../boot/dts/renesas/r8a779f0-spider.dts | 52 +++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a779f0-spider.dts b/arch/arm64/boot/dts/renesas/r8a779f0-spider.dts
index 7aac3f4d319c330c..a73251da1f215141 100644
--- a/arch/arm64/boot/dts/renesas/r8a779f0-spider.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider.dts
@@ -6,12 +6,56 @@
*/
/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+
#include "r8a779f0-spider-cpu.dtsi"
#include "r8a779f0-spider-ethernet.dtsi"
/ {
model = "Renesas Spider CPU and Breakout boards based on r8a779f0";
compatible = "renesas,spider-breakout", "renesas,spider-cpu", "renesas,r8a779f0";
+
+ keyboard-irq {
+ compatible = "gpio-keys";
+
+ pinctrl-0 = <&keyboard_irq_pins>;
+ pinctrl-names = "default";
+
+ interrupt-parent = <&intc_ex>;
+
+ key-0 {
+ interrupts = <0 IRQ_TYPE_EDGE_FALLING>;
+ linux,code = <KEY_0>;
+ label = "Breakabout Board CP18";
+ wakeup-source;
+ debounce-interval = <20>;
+ };
+
+ key-1 {
+ interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
+ linux,code = <KEY_1>;
+ label = "Breakabout Board CP17";
+ wakeup-source;
+ debounce-interval = <20>;
+ };
+
+ key-4 {
+ interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
+ linux,code = <KEY_4>;
+ label = "Breakout Board CN37-4";
+ wakeup-source;
+ debounce-interval = <20>;
+ };
+
+ key-5 {
+ interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+ linux,code = <KEY_5>;
+ label = "Breakout Board CN37-2";
+ wakeup-source;
+ debounce-interval = <20>;
+ };
+ };
};
&i2c4 {
@@ -22,3 +66,11 @@ eeprom@51 {
pagesize = <8>;
};
};
+
+&pfc {
+ keyboard_irq_pins: keyboard-irq {
+ groups = "intc_ex_irq0", "intc_ex_irq1", "intc_ex_irq4",
+ "intc_ex_irq5";
+ function = "intc_ex";
+ };
+};
--
2.34.1
