[PATCH v5 3/3] arm64: dts: mediatek: mt8195: Add 'rx-fifo-depth' for cherry

From: Chunfeng Yun
Date: Thu Jan 04 2024 - 01:17:15 EST


Add the quirk property "rx-fifo-depth" to work around Gen1 isoc-in
transfer issue which send out unexpected ACK even after device
already finished the burst transfer with a short patcket, specially
for a 4K camera device.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
---
v5: no changes
v4:
change property value, and put before supply
add reviewed-by Angelo
v3: change value according to binding
v2: use 'rx-fifo-depth' property
---
arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index dd5b89b73190..00fcde60300e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -1183,6 +1183,7 @@
&xhci0 {
status = "okay";

+ rx-fifo-depth = <3072>;
vusb33-supply = <&mt6359_vusb_ldo_reg>;
vbus-supply = <&usb_vbus>;
};
@@ -1190,6 +1191,7 @@
&xhci1 {
status = "okay";

+ rx-fifo-depth = <3072>;
vusb33-supply = <&mt6359_vusb_ldo_reg>;
vbus-supply = <&usb_vbus>;
};
--
2.18.0