linux-kernel - Re: [PATCH v2 3/5] dt-bindings: usb: xhci: Add 'write-64-hi-lo-quirk' quirk

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Message-ID: <20240604021935.GB49465@ubuntu>
Date: Tue, 4 Jun 2024 11:19:35 +0900
From: Jung Daehwan <dh10.jung@...sung.com>
To: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, Greg Kroah-Hartman
	<gregkh@...uxfoundation.org>, Rob Herring <robh@...nel.org>, Krzysztof
	Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Mathias
	Nyman <mathias.nyman@...el.com>, Felipe Balbi <balbi@...nel.org>, "open
 list:USB SUBSYSTEM" <linux-usb@...r.kernel.org>, "open list:OPEN FIRMWARE
 AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>, open list
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/5] dt-bindings: usb: xhci: Add
 'write-64-hi-lo-quirk' quirk

On Tue, Jun 04, 2024 at 12:30:32AM +0000, Thinh Nguyen wrote:
> On Mon, Jun 03, 2024, Jung Daehwan wrote:
> > 
> > This issue is not specific on SoC side but dwc3 controller. I think it's
> > better to add it to dwc3 directly but I can't find dts for dwc3. Dts for
> > SoC, which uses dwc3 would be needed in this case, right?
> > 
> 
> This quirk applies across different DWC_usb3x versions. IMO, you can
> just pass the xhci quirk flag along the dwc3_xhci_plat_quirk->quirks
> without needing to introduce a new xhci DTS binding. However, to do
> this, you should extract the xhci quirk flags to a separate header so
> that dwc3 can include and use them.
> 
> BR,
> Thinh

I haven't got using dwc3_xhci_plat_quirk. Let me try to use it.
Thanks for the comment.

Best Regards,
Jung Daehwan