Re: [PATCH v3 4/4] mmc: renesas_sdhi: skip SCC error check when retuning

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On Wed, Jul 18, 2018 at 10:54:08AM +0200, Simon Horman wrote:
> Hi Niklas,
> 
> On Tue, Jul 17, 2018 at 04:52:16PM +0200, Niklas Söderlund wrote:
> > From: Masaharu Hayakawa <masaharu.hayakawa.ry@xxxxxxxxxxx>
> > 
> > Checking for SCC error during retuning is unnecessary.
> > 
> > Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@xxxxxxxxxxx>
> > [Niklas: fix small style issue]
> > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> > Tested-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> > Reviewed-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

Sorry, Niklas, I got confused with the messages, that's my fault. I want
to revoke my tags here which were meant for another patch in your
series. I actually wanted to write a comment about...

> > 
> > ---
> > 
> > * Changes since v2
> > - Added check for HS400 as it's now merged.
> > - Added tags from Wolfram.
> > ---
> >  drivers/mmc/host/renesas_sdhi_core.c | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> > 
> > diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
> > index 777e32b0e410e850..a21b347424f67c52 100644
> > --- a/drivers/mmc/host/renesas_sdhi_core.c
> > +++ b/drivers/mmc/host/renesas_sdhi_core.c
> > @@ -444,6 +444,14 @@ static bool renesas_sdhi_check_scc_error(struct tmio_mmc_host *host)
> >  {
> >  	struct renesas_sdhi *priv = host_to_priv(host);
> >  
> > +	if (!(host->mmc->ios.timing == MMC_TIMING_UHS_SDR104) &&
> > +	    !(host->mmc->ios.timing == MMC_TIMING_MMC_HS200) &&
> > +	    !(host->mmc->ios.timing == MMC_TIMING_MMC_HS400))
> 
> According to the BSP this needs to differentiate between 4tap and 8tap
> variants of HS400 support.

... checking exactly this.

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