RE: [PATCH v3 2/3] mmc: tmio-mmc: add support for 32bit data port

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> > > This SWAP register exists on R-Car as well. Out of curiosity, what
> > > is the register value of 0xE804E0E4?
> >
> > 0xE804E0E4 = 0x0001
> >
> > So...something is there!
> 
> I am quite convinced there is this BUSWIDTH register. If you are
> interested, try setting this to 0 and see if it works without the 32 bit
> register patches.

Well, it looks like I can't write that register location to 0.
It always keeps a value of 0x0001. So, it must be read-only.

It was a good idea though.
Still, I might try to find out what is there at that location out of curiosity.

Without my the 32-bit write patch, I get a lot of these messages:

    sh_mobile_sdhi e804e800.sd: timeout waiting for SD bus idle



Chris

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