Re: [PATCH v25 10/11] mmc: renesas_sdhi: Add write32_hook for CTL_SD_CARD_CLK_CTL register writes

[Wolfram Sang]

On Wed, Oct 28, 2026 at 12:51:27PM +0000, Biju Das wrote:
> From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> 
> Add a write32_hook, analogous to the existing write16_hook, so that
> sd_ctrl_write32() can wait for the SD bus to become idle before
> certain 32-bit register writes.
> 
> renesas_sdhi_write32_hook() checks whether the target register is
> CTL_SD_CARD_CLK_CTL and, if so, waits for TMIO_STAT_SCLKDIVEN via
> renesas_sdhi_wait_idle() before the write proceeds. Other registers
> are unaffected. As with write16_hook, the write is skipped if the
> hook returns a non-zero error.
> 
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>

Reviewed-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

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