On Mon, 8 Sept 2025 at 12:41, Sarthak Garg <quic_sartgarg@quicinc.com> wrote:
>
> Add level shifter support for qualcomm SOC's.
>
> - Changed from v5
> - As suggested by Krzysztof Kozlowski reintroduced minimum/maximum
> in dt bindings and avoid repeating constraints in free form
> text.
> - As suggested by Krzysztof Kozlowski/Konrad Dybcio update commit
> message reflecting discussions and previous disagreements.
>
> - Changed from v4
> - As suggested by Krzysztof Kozlowski Renamed the property from
> `max-sd-hs-frequency` to `max-sd-hs-hz` for clarity.
> - As suggested by Krzysztof Kozlowski remove min/max constraints
> and add default: 50000000 in dt-bindings.
> - As suggested by Konrad Dybcio moved max-sd-hs-hz property in the
> SoC dtsi.
> - Retained sdhci-caps-mask in sm8550.dtsi for now and will revisit
> its removal for future targets after thorough validation and testing
> from the beginning.
>
> - Changed from v3
> - As suggested by Krzysztof Kozlowski moved the property from the
> SoC-level DTS to the board-level DTS.
> - Revised the commit messages to clearly explain its board-specific.
>
> - Changed from v2
> - As suggested by Konrad Dybcio and Ulf Hansson redesigned logic
> to introduce a new DT property max-sd-hs-frequency and override
> the hs_max_dtr accordingly in sd.c file.
>
> - Changed from v1
> - As suggested by Krzysztof Kozlowski redesigned logic to use
> compatible property for adding this level shifter support.
> - Addressed Adrian Hunter comments on V1 with resepect to
> checkpatch.
> - Cleared the bits first and then set bits in
> sdhci_msm_execute_tuning as suggested by Adrian Hunter.
> - Upated the if condition logic in msm_set_clock_rate_for_bus_mode
> as suggested by Adrian Hunter.
>
> Sarthak Garg (4):
> mmc: sdhci-msm: Enable tuning for SDR50 mode for SD card
> dt-bindings: mmc: controller: Add max-sd-hs-hz property
> mmc: core: Introduce a new flag max-sd-hs-hz
> arm64: dts: qcom: sm8550: Limit max SD HS mode frequency by default
>
> .../bindings/mmc/mmc-controller-common.yaml | 8 ++++++++
> arch/arm64/boot/dts/qcom/sm8550.dtsi | 1 +
> drivers/mmc/core/host.c | 2 ++
> drivers/mmc/core/sd.c | 2 +-
> drivers/mmc/host/sdhci-msm.c | 15 +++++++++++++++
> include/linux/mmc/host.h | 1 +
> 6 files changed, 28 insertions(+), 1 deletion(-)
>
> --
> 2.34.1
>
Patch 1 -> 3, applied for next, thanks!
Note that, I took the liberty of amending patch3 to change the
declaration of "max_sd_hs_hz" to an u32, rather than an unsigned int.
Kind regards
Uffe