Hi Yamada-san,
On Mon, Oct 01, 2018 at 09:31:01PM +0900, Masahiro Yamada wrote:
> CTL_RESET_SDIO register is specific to the TMIO MFD (tmio_mmc.c).
>
> Add a new hook host->reset for performing a platform-specific reset
> sequence, and move CTL_RESET_SDIO over there.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
I like it in general.
> +static void tmio_mmc_reset(struct tmio_mmc_host *host)
> +{
> + sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0000);
> + usleep_range(10000, 11000);
> + sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0001);
> + usleep_range(10000, 11000);
> +}
> +
Are you sure resetting SDIO works independently of resetting SD? Maybe
we should add resetting SD here, too, to keep the pattern...
> --- a/drivers/mmc/host/tmio_mmc_core.c
> +++ b/drivers/mmc/host/tmio_mmc_core.c
> @@ -164,14 +164,13 @@ static void tmio_mmc_reset(struct tmio_mmc_host *host)
> {
> /* FIXME - should we set stop clock reg here */
> sd_ctrl_write16(host, CTL_RESET_SD, 0x0000);
> - if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG)
> - sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0000);
> usleep_range(10000, 11000);
> sd_ctrl_write16(host, CTL_RESET_SD, 0x0001);
> - if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG)
> - sd_ctrl_write16(host, CTL_RESET_SDIO, 0x0001);
> usleep_range(10000, 11000);
... and have this simplified reset pattern either also in a seperate
function, or doing...
>
> + if (host->reset)
> + host->reset(host);
else
simplified_reset_pattern
?
What's your opinion?
Regards,
Wolfram
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