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Tue, 25 Aug 2026 05:25:02 -0700 (PDT) Received: from hiagonb ([2804:14c:4c5:9534::f35c]) by smtp.gmail.com with ESMTPSA id ada2fe7eead31-77d82f70b83sm5130546137.2.2026.08.25.05.25.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Aug 2026 05:25:02 -0700 (PDT) Date: Tue, 25 Aug 2026 09:24:59 -0300 From: Hiago De Franco To: Andrei Lalaev Cc: u-boot@lists.denx.de, u-boot@lists.u-boot-project.org Subject: Re: [PATCH v2 0/2] board: sophgo: add support for Milk-V Duo 256M Message-ID: References: <20260723-add-milkv-duo256m-v2-0-2e1373dbcb8d@baylibre.com> <20260822091510.3253162-1-andrey.lalaev@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260822091510.3253162-1-andrey.lalaev@gmail.com> X-BeenThere: u-boot@lists.u-boot-project.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.u-boot-project.org Hi Andrei, On Sat, Aug 22, 2026 at 11:15:10AM +0200, Andrei Lalaev wrote: > Hi Hiago, > > Thank you for the patches. > > From your cover letter I understood that SD card is supported. > However whatever I try, I always get the following error: > > U-Boot 2026.07-00002-gbd5e3de2ed6a (Aug 22 2026 - 10:27:48 +0200)milkv_duo_256m > > DRAM: 256 MiB > Core: 20 devices, 13 uclasses, devicetree: separate > MMC: mmc@4310000: 0 > Loading Environment from nowhere... OK > In: serial@4140000 > Out: serial@4140000 > Err: serial@4140000 > Net: > Warning: ethernet@4070000 (eth0) using random MAC address - 16:21:8c:10:cd:96 > eth0: ethernet@4070000 > Hit any key to stop autoboot: 0 > milkv_duo_256m# mmc info > Card did not respond to voltage select! : -110 > milkv_duo_256m# mmc rescan > Card did not respond to voltage select! : -110 > > > I tried 2 different SD cards and got the same result. > > Am I doing something wrong, or is there something else I need to configure? You are most likely missing this patch: https://lore.kernel.org/all/20260507234836.284918-1-hfranco@baylibre.com/ This is needed in order to make the SD card work. This patch is already merged on main branch, as commit 3a4a8963aace ("mmc: cv1800b_sdhci: honor 'no-1-8-v' DT property"). Check this patch and let me know if it works now ;) > > > Best regards, > Andrei Lalaev Regards, Hiago.