linux-kernel - Re: [PATCH] mmc: sdhci-of-dwcmshc: Use inverted-wp quirk for CV18xx and SG200x SoCs

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Date: Thu, 13 Jun 2024 21:15:41 +0800
From: Jisheng Zhang <jszhang@...nel.org>
To: Haylen Chu <heylenay@...look.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>,
	Ulf Hansson <ulf.hansson@...aro.org>, linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mmc: sdhci-of-dwcmshc: Use inverted-wp quirk for CV18xx
 and SG200x SoCs

On Thu, Jun 13, 2024 at 09:03:24PM +0800, Jisheng Zhang wrote:
> On Fri, May 31, 2024 at 02:13:47PM +0000, Haylen Chu wrote:
> > MMC controller integrated in Sophgo CV18xx and SG200x SoCs has an
> > inverted write-protect flag, causing SDCards misdetected as read-only.
> > So set SDHCI_QURIK_INVERTED_WRITE_PROTECT to make write protection work
> > correctly.
> 
> No, I would rather set cd-inverted property in dts.

wp-inverted

> > 
> > Fixes: 017199c2849c ("mmc: sdhci-of-dwcmshc: Add support for Sophgo CV1800B and SG2002")
> > Signed-off-by: Haylen Chu <heylenay@...look.com>
> > ---
> >  drivers/mmc/host/sdhci-of-dwcmshc.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
> > index 39edf04fedcf..62b7f28de54f 100644
> > --- a/drivers/mmc/host/sdhci-of-dwcmshc.c
> > +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
> > @@ -962,7 +962,8 @@ static const struct sdhci_pltfm_data sdhci_dwcmshc_th1520_pdata = {
> >  
> >  static const struct sdhci_pltfm_data sdhci_dwcmshc_cv18xx_pdata = {
> >  	.ops = &sdhci_dwcmshc_cv18xx_ops,
> > -	.quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
> > +	.quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
> > +		  SDHCI_QUIRK_INVERTED_WRITE_PROTECT,
> >  	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
> >  };
> >  
> > -- 
> > 2.45.1
> >