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d=rootcommit.com; s=hostingermail-a; t=1774862388; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=xn8ytO1cIDErWyKt0Aui97W2ei8LosNrt38/Xqsonzc=; b=EsU/fRpB4bMNr1MbcjiJcFxFaQrImPdZP8Esq/9JO/3pYYnkpDwzzei3vtoSLw4TGqJ9Q+ TNmzMMMjaO57rvtNuIeBP58jf00XaB0KWEpAusBlaZBmzNEAzfQsR5LYAusd9T76XwYYYF DgAn+A5DSahBLtvY4N6wz/MWQor5m4DCe4Y9rUN2Rr23LyUhJoNvI1cv4mQ9GZQMgvtgbW 9+ylL8QYrtLYLOWLNwiUWCEReIJiKHjsiUq3B/9DiwyGpCQEVOr4kUAVQFiYT80CH31YR9 1wNxXYV5rejUx0twMXT9FiqHulqymKbIrDFsa4NYodEO5fakub07vMFEWnQiwQ== Message-ID: <17eb09e8-280d-4a41-8a8c-8c8287160e97@rootcommit.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: michael.opdenacker@rootcommit.com, Javier Martinez Canillas , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Anand Moon , Trevor Gamblin Subject: Re: [PATCH v5 0/9] riscv: spacemit: enable SD card support with UHS modes for OrangePi RV2 To: Iker Pedrosa , Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adrian Hunter , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yixun Lan References: <20260330-orangepi-sd-card-uhs-v5-0-bd853604322d@gmail.com> Content-Language: en-US From: Michael Opdenacker In-Reply-To: <20260330-orangepi-sd-card-uhs-v5-0-bd853604322d@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Mon, 30 Mar 2026 09:19:47 +0000 (UTC) X-CM-Envelope: MS4xfAFrx90go/FDvQ2bCCAciVHZL0elbEQjsnIdsRspr6lsybI6rwV23lYlEa2ApzbvkTfe89o15JrIn57IsD7safNPyhyROCHNc3oWDPM8tqByr5qxkPCt N3cQlUyVDJxYfM80eMvfYbsJ1FGwCJ7ejYjJAkAoFJA7FC25rvWdm0IIeAdFGpq8m14+p6O4Eim/8vOdn1M/WK+43lQmNsAlNaknEzm4mRBa9zn/INJ/1PmR VPkeWM0QNjDPNRY8AMEMY9+GQWWf3lUZ+6vWTOuC+R2evMO4JyXUTxNKoKaWeYpo5WGW81yfsiYOYV7lOTGaButPF7e+/zBFx8TbbNu870v4U3d0NCp0ca9j O8LPNwbs9O59fhMxe4CElqmqn7lj69GmTatAWistWMsC1R3PDJYXi7LS3ARNv58JmfSuxhh3Q+rhnnpAiRwwEA8upv3oUsyya3S3/N/J3z5yz29NFy8Tkiyv D4++CwJMR7mJY0sQETdD2XzKvDgfm+q/NU6hO1Tt8B/L039PqEXVVBj5imzVGsoVwvCsOEiY0g5Z9PlfM8XiZXtjXrLuNxvCqor0lrfF2vQJyj0rAnDHHvIH vpTwCGah5jhet9ix3dmQt7FQMl3haN9C12FhnU+3CrFySGdgv6boOmxRgrG4Kw+RfkXpg7Wl+ycoNpH+uPFmhTbFseqWkfKhK9h8CbZsgDxG1ce8yLIJyamv GVZbdVU2Sgm9NifCORf6pVE0vGKKTtPu9AYanBW2z9D943JQovtJOeVZNZCCHAoVritoDEmWW83RPfjUQNWGE3Xp4ir6KWSQsj7xyjZa/+mey9Kxo+M7Jq3B UgbmtygCKATLhIeqPzrji1a+AX7iEzoyDo912b0lJTeZPw2NkIl4x+UFvKWnGUWiVGIHKZHo9/n1PBdt3dLX1A2sPdi7l2OsXhu9/NS41ehwK4/qwaX7fPS+ +ecuYw== X-CM-Analysis: v=2.4 cv=ALriHGRn c=1 sm=1 tr=0 ts=69ca4033 a=UGNOvlGp38Csz17LMCzH0g==:617 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=VwQbUJbxAAAA:8 a=pGLkceISAAAA:8 a=d70CFdQeAAAA:8 a=np_wIC4uXEsaGhWusoMA:9 a=QEXdDO2ut3YA:10 a=NcxpMcIZDGm-g932nG_k:22 X-AuthUser: michael.opdenacker@rootcommit.com Hi Iker On 3/30/26 10:38 AM, Iker Pedrosa wrote: > This series enables complete SD card support for the Spacemit K1-based > OrangePi RV2 board, including UHS (Ultra High Speed) modes for > high-performance SD card operation. > > Background > > The Spacemit K1 SoC includes an SDHCI controller capable of supporting > SD cards up to UHS-I speeds (SDR104 at 208MHz). However, mainline > currently lacks basic SD controller configuration, SDHCI driver > enhancements for voltage switching and tuning, and power management > infrastructure. > > Implementation > > The series enables SD card support through coordinated layers: > > - Hardware infrastructure (patches 1-2): Device tree bindings for voltage > switching hardware and essential clock infrastructure. > - SDHCI driver enhancements (patches 3-7): Regulator framework > integration, pinctrl state switching for voltage domains, AIB register > programming, and comprehensive SDR tuning support for reliable UHS > operation. > - SoC and board integration (patches 8-10): Complete K1 SoC controller > definitions, PMIC power infrastructure, and OrangePi RV2 board enablement > with full UHS support. > > This transforms the OrangePi RV2 from having no SD card support to full > UHS-I capability, enabling high-performance storage up to 208MHz. > > Signed-off-by: Iker Pedrosa > --- > Changes in v5: > - Document optional pinctrl-names property supporting "default" and > "state_uhs" pinctrl states for coordinating pin configuration changes > during UHS-I voltage switching. > - Link to v4: https://lore.kernel.org/r/20260323-orangepi-sd-card-uhs-v4-0-567c9775fd0e@gmail.com Thanks for the update! Successfully tested on OrangePi RV2 (on top of mmc-next... doesn't work on top of master). Tested-by: Michael Opdenacker I'm excited to have this feature in the next kernel. Cheers Michael. -- Root Commit Embedded Linux Training and Consulting https://rootcommit.com