Re: [PATCH v8 0/9] riscv: spacemit: enable SD card support with UHS modes for OrangePi RV2

["Troy Mitchell" <troy.mitchell@linux.dev>]

On Tue Apr 14, 2026 at 3:12 PM CST, Iker Pedrosa wrote:
> El lun, 13 abr 2026 a las 10:07, Krzysztof Kozlowski
> (<krzk@kernel.org>) escribió:
>>
>> On 13/04/2026 10:02, 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.
>> >
>> > Tested-by: Michael Opdenacker <michael.opdenacker@rootcommit.com>
>> > Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
>> > ---
>> > Changes in v8:
>> > - Resending the series as v8. The v7 submission failed due to an SMTP
>> >   error during transit, which resulted in a broken thread on the mailing
>> >   list.
>>
>> Hm? Everything is here:
>> https://lore.kernel.org/all/20260413-orangepi-sd-card-uhs-v7-1-16650f49c022@gmail.com/
>>
>> You can send individual patches to fix up threading, use --in-reply-to.
>
> My apologies for the noise and the rapid resend.
>
> The reason for v8 was that the v7 cover letter (0/9) failed to reach
> the mailing list due to an SMTP error on my end. This left the v7
> thread "headless" in the archives without the changelog or the full
> context of the series. I was attempting to fix the threading
> immediately so that reviewers would have a complete set of patches to
> look at, but I realize now that resending the entire series on the
> same day was premature.
So that's why Krzysztof said you should send individual patch with --in-reply-to.

                                      - Troy

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