[U-Boot] SPI Test

Marek Vasut
2012-01-16T15:48:11Z

> On 16.01.2012 12:23, Marek Vasut wrote:
> >> Hmm,
> >>
> >> can you tell me what type of SPI flash you have installed?
> >> Typically the read-status-register operation requires a low to high
> >> transition to get terminated. This is from my flash' datasheet:
> >>
> >> Read-Status-Register (RDSR)
> >> The Read-Status-Register (RDSR) instruction allows reading of the status
> >> register. The status register
> >> may be read at any time even during a Write (Program/Erase) operation.
> >> When a Write operation is in
> >> progress, the Busy bit may be checked before sending any new commands to
> >> assure that the new
> >> commands are properly received by the device. CE# must be driven low
> >> before the RDSR instruction is
> >> entered and remain low until the status data is read.
> >> Read-Status-Register is continuous with ongoing
> >> clock cycles until it is terminated by a low to high transition of the
> >> CE#. See Figure 16 for the RDSR instruction sequence...
> >> It's a SST part.
> >
> > I just noticed ... Matthias, why don't you CC the mailing list?
>
> Fabio wanted to stop the list being flood with this discussion.

No, please flood ... that's what the mailing list is for in there.

> But you are right. Let's stop this thread an return to the list.

We can safely continue here.

>
> Matthias
>
> > Also, I can't really remember now what part there is.