linux-kernel - Re: [PATCH v5 4/4] arm64: dts: layerscape: add dma-coherent for usb node

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Message-ID: <aQCFjuyMCTM9qQcd@dragon>
Date: Tue, 28 Oct 2025 16:57:50 +0800
From: Shawn Guo <shawnguo2@...h.net>
To: Frank Li <Frank.Li@....com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
	Shawn Guo <shawnguo@...nel.org>, linux-usb@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	bjorn.andersson@....qualcomm.com, imx@...ts.linux.dev,
	Ze Huang <huang.ze@...ux.dev>
Subject: Re: [PATCH v5 4/4] arm64: dts: layerscape: add dma-coherent for usb
 node

On Mon, Sep 29, 2025 at 10:24:17AM -0400, Frank Li wrote:
> Add SOC special compatible string, remove fallback snps,dwc3 to let flatten
> dwc3-layerscape driver to be probed and enable dma-coherence for usb node
> since commit add layerscape dwc3 support, which set correct gsbustcfg0
> value.
> 
> Add iommus property to run at old uboot, which use fixup add iommus by
> check compatible string snsp,dwc3 compatible string.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>

Applied, thanks!