[openwrt/openwrt] mt7622: bpi-r64: enable using mt7531 switch irq

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/7323ef2ffab9f25aa92ea786870150baa9db7004

commit 7323ef2ffab9f25aa92ea786870150baa9db7004
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Thu Feb 10 13:48:10 2022 +0000

    mt7622: bpi-r64: enable using mt7531 switch irq
    
    Now that we support link-state-change interrupts, wire up MT7531 IRQ
    line which is connected to GPIO#53 according to the schematics [1].
    
    As a result, PHY state no longer needs to be polled on that board.
    
    [1]: https://forum.banana-pi.org/t/bpi-r64-mt7622-schematic-diagram-public/10118
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 .../180-dts-mt7622-bpi-r64-add-mt7531-irq.patch             | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/target/linux/mediatek/patches-5.10/180-dts-mt7622-bpi-r64-add-mt7531-irq.patch b/target/linux/mediatek/patches-5.10/180-dts-mt7622-bpi-r64-add-mt7531-irq.patch
new file mode 100644
index 0000000000..80ceb490d4
--- /dev/null
+++ b/target/linux/mediatek/patches-5.10/180-dts-mt7622-bpi-r64-add-mt7531-irq.patch
@@ -0,0 +1,13 @@
+--- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
++++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
+@@ -160,6 +160,10 @@
+ 		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 {