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charset="utf-8" X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240531060729epcas2p1df12dd3b14c5fa2fa0716f72010b3dbd References: <1717135657-120818-1-git-send-email-dh10.jung@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: xHCI specification 5.1 "Register Conventions" states that 64 bit registers should be written in low-high order. All writing operations in xhci is done low-high order following the spec. Add a new quirk to support workaround for high-low order. Signed-off-by: Daehwan Jung --- Documentation/devicetree/bindings/usb/usb-xhci.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.yaml b/Documentation/devicetree/bindings/usb/usb-xhci.yaml index 4238ae8..447d331 100644 --- a/Documentation/devicetree/bindings/usb/usb-xhci.yaml +++ b/Documentation/devicetree/bindings/usb/usb-xhci.yaml @@ -25,6 +25,10 @@ properties: description: Set if the controller has broken port disable mechanism type: boolean + write-64-hi-lo-quirk: + description: Set if the controller has a limitation of high-low order + type: boolean + imod-interval-ns: description: Interrupt moderation interval default: 5000 -- 2.7.4