Re: [PATCH v4 1/3] dt-bindings: usb: mtk-xhci: add a property for Gen1 isoc-in transfer issue

[Mathias Nyman]

Hi

On 27.12.2023 8.03, Chunfeng Yun wrote:
> For Gen1 isoc-in endpoint on controller before about SSUSB IPM v1.6.0, it
> still send out unexpected ACK after receiving a short packet in burst
> transfer, this will cause an exception on connected device, specially for
> a 4k camera.
> Add a quirk property "rx-fifo-depth" to work around this hardware issue,
> prefer to use 3k bytes;
> The side-effect is that may cause performance drop about 10%, including
> bulk transfer.

Is it be possible to detect those Mediatek xHC versions that need this
workaround in the xhci-mtk driver directly?

This way we could avoid passing a new "rx-fifo-depth" property to it.

Thanks
Mathias