Re: [PATCH/RFT 2/3] mmc: renesas_sdhi: Add r8a77965 support

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On Wed, May 02, 2018 at 10:14:15AM +0200, Wolfram Sang wrote:
> 
> > With the current state of the driver this patch should be fine,
> > modulo the changes suggested above. But once HS400 support is merged
> > some logic will be required to disable that feature for the r8a77965
> > until HS400 support for that SoC is explicitly added.
> > 
> > Or conversely, perhaps when HS400 is added it should only be enabled
> > in the driver for SoCs that are known to work: r8a7796 and r8a7795. In the
> > case of the latter perhaps only ES2.0.
> > 
> > Wolfram, what do you think?
> 
> M3-N (and future SoCs as it seems) has 8 taps while the others have 4.
> Maybe we should have something already in place to distinguish 8 taps
> and 4 taps and leave the 8 taps part for "to be added later"?

Yes, that is one option.
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