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Sat, 01 Nov 2025 05:14:36 -0700 (PDT) Message-ID: <3cba9996-228e-4086-99ba-4a2a00de57ab@gmail.com> Date: Sat, 1 Nov 2025 20:14:31 +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 To: Heiko Stuebner Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Shawn Lin , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Grzegorz Sterniczuk , Dragan Simic , Jonas Karlman , Jianfeng Liu References: <20251017073954.130710-1-cnsztl@gmail.com> <08911ae2-fef3-432d-a236-d820c9cb67ac@gmail.com> <5af928c4-4b6e-489c-ad39-26cef3dd7473@gmail.com> <10751338.nUPlyArG6x@phil> From: Tianling Shen In-Reply-To: <10751338.nUPlyArG6x@phil> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi Heiko, On 2025/11/1 19:54, Heiko Stuebner wrote: > Am Montag, 27. Oktober 2025, 18:34:25 Mitteleuropäische Normalzeit schrieb Tianling Shen: >> + 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! > > So I guess, we don't need the patch reducing the speed anymore, right? Yes! ;) Thanks, Tianling. > > > Thanks > Heiko > > >> 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"; >>>>> }; >>>> >>> >> >> > > > >