Thread (9 messages) 9 messages, 5 authors, 2024-01-04

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

From: Krzysztof Kozlowski <hidden>
Date: 2024-01-02 21:04:02
Also in: linux-devicetree, linux-mediatek, linux-usb, lkml

On 27/12/2023 07:03, 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.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v4: change rx-fifo size in bytes
Acked-by: Krzysztof Kozlowski <redacted>

Best regards,
Krzysztof


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