linux-kernel - Re: [PATCH 1/2] arm64: dts: exynos: gs101: ufs: add dma-coherent property

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Message-ID: <8ccfdccefaf0cd651a3f085aa78227907f03a478.camel@linaro.org>
Date: Fri, 14 Mar 2025 15:56:24 +0000
From: André Draszik <andre.draszik@...aro.org>
To: Peter Griffin <peter.griffin@...aro.org>, Tudor Ambarus	
 <tudor.ambarus@...aro.org>, Rob Herring <robh@...nel.org>, Krzysztof
 Kozlowski	 <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Alim
 Akhtar	 <alim.akhtar@...sung.com>, Avri Altman <avri.altman@....com>, Bart
 Van Assche	 <bvanassche@....org>, "Martin K. Petersen"
 <martin.petersen@...cle.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
	linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-scsi@...r.kernel.org, kernel-team@...roid.com,
 willmcvicker@...gle.com, 	stable@...r.kernel.org
Subject: Re: [PATCH 1/2] arm64: dts: exynos: gs101: ufs: add dma-coherent
 property

On Fri, 2025-03-14 at 15:38 +0000, Peter Griffin wrote:
> ufs-exynos driver configures the sysreg shareability as
> cacheable for gs101 so we need to set the dma-coherent
> property so the descriptors are also allocated cacheable.
> 
> This fixes the UFS stability issues we have seen with
> the upstream UFS driver on gs101.
> 
> Fixes: 4c65d7054b4c ("arm64: dts: exynos: gs101: Add ufs and ufs-phy dt nodes")
> Cc: stable@...r.kernel.org
> Suggested-by: Will McVicker <willmcvicker@...gle.com>
> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>

Tested-by: André Draszik <andre.draszik@...aro.org>
Reviewed-by: André Draszik <andre.draszik@...aro.org>