RE: [PATCH v18 00/12] Add Renesas RZ/G3L SD/eMMC support

Hi Wolfram,

> -----Original Message-----
> From: Biju <[email protected]>
> Sent: 22 June 2026 16:56
> Subject: [PATCH v18 00/12] Add Renesas RZ/G3L SD/eMMC support
> 
> From: Biju Das <[email protected]>
> 
> RZ/G3L SoC has:
> 
> Channel 0 supports SD and eMMC (including HS400/HS400ES).
> Channel 1 supports SD and eMMC (except for HS400).
> Channel 2 supports SD.
> 
> The SoC supports a maximum frequency of 150 MHz. The SD0 interface does not support IOVS and PWEN in the
> SDHI register (no internal regulator), unlike SD1 and SD2. It has an internal divider for all modes
> except HS400.
> It also has a 2048-bit divider compared to 512 on others. Moreover RZ/G3L supports HS400 enhanced strobe
> mode.

I will be sending an improved version of the patch series that
Handles clock divider correctly.

Cheers,
Biju

> 
> v17->v18:
>  * Collected tag
>  * Merged patch #4 and #5 and updated commit description
>  * Annotated the empty sentinel entries in the OF match tables with a
>    "Sentinel." comment for clarity.
>  * Retained the tag as it is a trivial cleanup.
>  * New patches drop struct renesas_sdhi_hw_info, instead using
>    renesas_sdhi_of_data and tmio_mmc_data.
>  * Dropped clk, pinctrl, SoC, and board dtsi from this patch series;
>    will send later.
> v1->v17:
>  * Collected tag for binding patch.
>  * Resending the series as there is an issue with patch threading from
>    patch #14.
> 
> Biju Das (12):
>   dt-bindings: mmc: renesas,sdhi: Document RZ/G3L (r9a08g046) SoC
>   mmc: renesas_sdhi: Fix whitespace alignment in struct
>     renesas_sdhi_of_data
>   mmc: renesas_sdhi: Add clk_mask field to support SoC-specific clock
>     divider widths
>   mmc: renesas_sdhi: Add max_divider field to support SoC-specific clock
>     divider ranges
>   mmc: renesas_sdhi: Add tuning delay support for RZ/G2L
>   mmc: renesas_sdhi: Add TMIO_MMC_INTERNAL_DIVIDER flag
>   mmc: renesas_sdhi: Add optional axis/axim reset controls
>   mmc: renesas_sdhi: Add RZ/G3L SDHI support
>   mmc: renesas_sdhi: Save and restore IOVS across suspend/resume
>   mmc: renesas_sdhi: Make HS400 OSEL bit configurable per SoC
>   mmc: renesas_sdhi: Add RZ/G3L HS400 support
>   mmc: renesas_sdhi: Add HS400 enhanced strobe support for RZ/G3L
> 
>  .../devicetree/bindings/mmc/renesas,sdhi.yaml | 101 ++++++--
>  drivers/mmc/host/renesas_sdhi.h               |  12 +-
>  drivers/mmc/host/renesas_sdhi_core.c          | 239 ++++++++++++++----
>  drivers/mmc/host/renesas_sdhi_internal_dmac.c |  73 +++++-
>  drivers/mmc/host/renesas_sdhi_sys_dmac.c      |  12 +-
>  include/linux/platform_data/tmio.h            |  18 ++
>  6 files changed, 370 insertions(+), 85 deletions(-)
> 
> --
> 2.43.0