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Mon, 27 Oct 2025 10:34:31 -0700 (PDT) Message-ID: <5af928c4-4b6e-489c-ad39-26cef3dd7473@gmail.com> Date: Tue, 28 Oct 2025 01:34:25 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: rockchip: fix eMMC corruption on NanoPC-T6 with A3A444 chips From: Tianling Shen To: Shawn Lin Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , Grzegorz Sterniczuk , Dragan Simic , Heiko Stuebner , Jonas Karlman , Jianfeng Liu References: <20251017073954.130710-1-cnsztl@gmail.com> <08911ae2-fef3-432d-a236-d820c9cb67ac@gmail.com> In-Reply-To: <08911ae2-fef3-432d-a236-d820c9cb67ac@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit + Jianfeng On 2025/10/20 12:44, Tianling Shen wrote: > Hi Shawn, > > On 2025/10/20 9:53, Shawn Lin wrote: >> Hi Tianling >> >> On 2025/10/17 Friday 15:39, Tianling Shen wrote: >>> From: Grzegorz Sterniczuk >>> >>> Some NanoPC-T6 boards with A3A444 eMMC chips experience I/O errors and >>> corruption when using HS400 mode. Downgrade to HS200 mode to ensure >>> stable operation. >> >> May I ask you to test another patch I just posted to see if it fixes >> your issue? >> >> https://patchwork.kernel.org/project/linux-mmc/ >> patch/1760924981-52339-1- git-send-email-shawn.lin@rock-chips.com/ > > Thank you for the patch! I will ask my friend to test it but he uses > this board as a home router, so it may take a few days or weeks to > report the result. Hi all, sorry for the late. My friend has tested this patch and it works fine after 50 times dd operation. A big thanks to Shawn! And hi Jianfeng, I found you made a similiar patch[1] for the ROCK 5 ITX board to lower down the mmc speed, could you please check if this patch also fixes your issue? Thanks, Tianling. 1. https://lore.kernel.org/linux-rockchip/20250228143341.70244-1-liujianfeng1994@gmail.com/ > > Thanks, > Tianling. > >> >> >>> >>> Signed-off-by: Grzegorz Sterniczuk >>> Signed-off-by: Tianling Shen >>> --- >>>   arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi | 3 +-- >>>   1 file changed, 1 insertion(+), 2 deletions(-) >>> >>> diff --git a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi b/ >>> arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi >>> index fafeabe9adf9..5f63f38f7326 100644 >>> --- a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi >>> +++ b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi >>> @@ -717,8 +717,7 @@ &sdhci { >>>       no-sd; >>>       non-removable; >>>       max-frequency = <200000000>; >>> -    mmc-hs400-1_8v; >>> -    mmc-hs400-enhanced-strobe; >>> +    mmc-hs200-1_8v; >>>       status = "okay"; >>>   }; >> >