Re: [PATCH 03/11] dt-bindings: usb: mtk-xhci: add compatible for mt8195
From: Rob Herring <robh@kernel.org>
Date: 2021-08-06 20:43:26
Also in:
linux-arm-kernel, linux-devicetree, linux-usb, lkml
On Fri, Jul 30, 2021 at 04:49:54PM +0800, Chunfeng Yun wrote:
There are 4 USB controllers on MT8195, the controllers (IP1~IP3, exclude IP0) have a wrong default SOF/ITP interval which is calculated from the frame counter clock 24Mhz by default, but in fact, the frame counter clock is 48Mhz, so we should set the accurate interval according to 48Mhz. Here add a new compatible for MT8195, it's also supported in driver. But the first controller (IP0) has no such issue, we prefer to use generic compatible, e.g. mt8192's compatible.
That only works until you find some 8195 bug common to all instances. Can't you read the clock frequency?
quoted hunk ↗ jump to hunk
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> --- Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml | 1 + 1 file changed, 1 insertion(+)diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml index 61a0e550b5d6..753e043e5327 100644 --- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml +++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml@@ -31,6 +31,7 @@ properties: - mediatek,mt8173-xhci - mediatek,mt8183-xhci - mediatek,mt8192-xhci + - mediatek,mt8195-xhci - const: mediatek,mtk-xhci reg:-- 2.18.0
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