Re: [RESEND PATCH v2] mtd: rawnand: micron: Adapt the PAGE READ flow to constraint controllers

[Miquel Raynal <miquel.raynal@xxxxxxxxxxx>]

On Tue, 2020-05-19 at 13:08:34 UTC, Miquel Raynal 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>
> Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next.

Miquel

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