[PATCH 3/6] P2020DS: Fixup sdhc to use PIO mode

[Gao Guanhua-B22826]

Thanks, I will add them. 

> -----Original Message-----
> From: Anton Vorontsov [mailto:avorontsov at ru.mvista.com] 
> Sent: Wednesday, September 23, 2009 7:55 PM
> To: Gao Guanhua-B22826
> Cc: sdhci-devel at lists.ossman.eu; linuxppc-dev at ozlabs.org
> Subject: Re: [PATCH 3/6] P2020DS: Fixup sdhc to use PIO mode
> 
> On Wed, Sep 23, 2009 at 05:08:09PM +0800, Gao Guanhua wrote:
> > The SDHC can not work on DMA mode because of the hardware 
> bug, so we 
> > set a broken dma flag and use PIO mode. This patch applies 
> to Rev1.0.
> 
> Signed-off-by line is missing (in all patches).
> 
> > ---
> >  arch/powerpc/boot/dts/p2020ds.dts |    1 +
> >  drivers/mmc/host/sdhci-of.c       |    3 +++
> >  2 files changed, 4 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/powerpc/boot/dts/p2020ds.dts 
> > b/arch/powerpc/boot/dts/p2020ds.dts
> > index be449ba..574ad4f 100644
> > --- a/arch/powerpc/boot/dts/p2020ds.dts
> > +++ b/arch/powerpc/boot/dts/p2020ds.dts
> > @@ -459,6 +459,7 @@
> >  			reg = <0x2e000 0x1000>;
> >  			interrupts = <72 0x2>;
> >  			interrupt-parent = <&mpic>;
> > +			fsl,sdhci-dma-broken;
> 
> You might want to update
> Documentation/powerpc/dts-bindings/fsl/esdhc.txt
> 
> >  			clock-frequency = <0>;
> >  		};
> >  
> > diff --git a/drivers/mmc/host/sdhci-of.c 
> b/drivers/mmc/host/sdhci-of.c 
> > index 01ab916..5879483 100644
> > --- a/drivers/mmc/host/sdhci-of.c
> > +++ b/drivers/mmc/host/sdhci-of.c
> > @@ -270,6 +270,9 @@ static int __devinit 
> sdhci_of_probe(struct of_device *ofdev,
> >  	if (sdhci_of_wp_inverted(np))
> >  		host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT;
> >  
> > +	if (of_get_property(np, "fsl,sdhci-dma-broken", NULL))
> > +		host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
> > +
> >  	clk = of_get_property(np, "clock-frequency", &size);
> >  	if (clk && size == sizeof(*clk) && *clk)
> >  		of_host->clock = *clk;
> > --
> > 1.6.4
> 
> Thanks,
> 
> --
> Anton Vorontsov
> email: cbouatmailru at gmail.com
> irc://irc.freenode.net/bd2
> 
>