Add a device node for the Interrupt Controller for External Devices
(INTC-EX) on R-Car M3-W, which serves external IRQ pins IRQ[0-5].
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Tested on Salvator-X by:
1) Enabling pinctrl and pull-up for IRQ1/GP2_01 in
salvator-common.dtsi:
@@ -376,7 +376,7 @@
};
&pfc {
- pinctrl-0 = <&scif_clk_pins>;
+ pinctrl-0 = <&scif_clk_pins &irq1_pins &keyboard_pins>;
pinctrl-names = "default";
avb_pins: avb {
@@ -407,6 +407,16 @@
function = "i2c2";
};
+ irq1_pins: irq1 {
+ groups = "intc_ex_irq1";
+ function = "intc_ex";
+ };
+
+ keyboard_pins: keyboard {
+ pins = "GP_2_1";
+ bias-pull-up;
+ };
+
pwm1_pins: pwm1 {
groups = "pwm1_a";
function = "pwm1";
2) Triggering IRQ1 by tying EXIO-D pin 50 to GND,
3) Verifying that the IRQC_MONITOR register contents change due to
triggering.
---
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index d9c928f9d224015d..afee3360cb4f0f56 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -725,6 +725,22 @@
#power-domain-cells = <1>;
};
+ intc_ex: interrupt-controller@e61c0000 {
+ compatible = "renesas,intc-ex-r8a7796", "renesas,irqc";
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ reg = <0 0xe61c0000 0 0x200>;
+ interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 407>;
+ power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
+ resets = <&cpg 407>;
+ };
+
i2c_dvfs: i2c@e60b0000 {
#address-cells = <1>;
#size-cells = <0>;
--
2.7.4
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