Re: [PATCH] mtd: rawnand: micron: Adapt the PAGE READ flow to constraint controllers

[Miquel Raynal <miquel.raynal@xxxxxxxxxxx>]

Hi Boris,

Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx> wrote on Tue, 19 May
2020 10:39:19 +0200:

> On Tue, 19 May 2020 09:46:39 +0200
> Miquel Raynal <miquel.raynal@xxxxxxxxxxx> wrote:
> 
> > There are controllers not able to just read data cycles on the
> > bus. There are controllers not able to do a change column.
> > 
> > If we want to support both, we need to check which operation is
> > supported first. This is the exact same mechanism that is in use for
> > parameter page reads (ONFI/JEDEC) as the same problem occurs.
> > 
> > Speed testing does not show any throughput penalty so we do not
> > optimize more than that. However it is likely that, in the future, a
> > more robust and exhaustive test will run at boot time to avoid
> > re-checking what is supported and what is not at every call.
> > 
> > Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>  
> 
> This looks good to me, just one thing to address below and you can add
> 
> Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>

Yes sure.


Thanks,
Miquèl

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