Re: [PATCH v3 3/3] arm64: dts: mediatek: mt8195: Add 'rx-fifo-depth' for cherry

From: AngeloGioacchino Del Regno
Date: Wed Dec 20 2023 - 05:30:58 EST


Il 20/12/23 03:58, Chunfeng Yun ha scritto:
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.

Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
---
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..58593348b810 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -1185,6 +1185,7 @@

Can you please place rx-fifo-depth before power supplies?

after which,

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>

Thanks,
Angelo

vusb33-supply = <&mt6359_vusb_ldo_reg>;
vbus-supply = <&usb_vbus>;
+ rx-fifo-depth = <3>;
};
&xhci1 {
@@ -1192,6 +1193,7 @@
vusb33-supply = <&mt6359_vusb_ldo_reg>;
vbus-supply = <&usb_vbus>;
+ rx-fifo-depth = <3>;
};
&xhci2 {