[openwrt/openwrt] mt7622: linksys-e8450: enable using mt7531 switch irq

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/c32835ccfe683e8d97c4b68cb7d38a3009e72411

commit c32835ccfe683e8d97c4b68cb7d38a3009e72411
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Thu Feb 10 14:12:45 2022 +0000

    mt7622: linksys-e8450: enable using mt7531 switch irq
    
    Turns out the MT7531 switch IRQ line is connected to GPIO#53 just like
    on the BPi-R64, so this seems to be part of the reference design and
    will probably apply to most MT7622+MT7531 boards.
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 target/linux/mediatek/dts/mt7622-linksys-e8450.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/target/linux/mediatek/dts/mt7622-linksys-e8450.dtsi b/target/linux/mediatek/dts/mt7622-linksys-e8450.dtsi
index 7358b94a8e..047a4a59ef 100644
--- a/target/linux/mediatek/dts/mt7622-linksys-e8450.dtsi
+++ b/target/linux/mediatek/dts/mt7622-linksys-e8450.dtsi
@@ -144,6 +144,10 @@
 		switch at 0 {
 			compatible = "mediatek,mt7531";
 			reg = <0>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			interrupt-parent = <&pio>;
+			interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;
 			reset-gpios = <&pio 54 0>;
 
 			ports {