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

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Message-ID: <c6c90a4b-b8d2-45d1-928a-464281ce7b37@kernel.org>
Date: Mon, 30 Jun 2025 08:01:04 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Peter Griffin <peter.griffin@...aro.org>,
 André Draszik <andre.draszik@...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 27/06/2025 18:28, Peter Griffin wrote:
> Hi Krzysztof,
> 
> On Fri, 14 Mar 2025 at 15:38, Peter Griffin <peter.griffin@...aro.org> 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>
>> ---
> 
> Friendly ping about this patch :)

Thanks, I dropped it from my queue based on comments on the bindings
patch, but that was too hasty.

I applied it now.

Best regards,
Krzysztof