[U-Boot] OpenRD Ultimate SATA & SD

[Prafulla Wadaskar]

> -----Original Message-----
> From: Philip Hands [mailto:phil at hands.com]
> Sent: Friday, June 17, 2011 1:33 AM
> To: Alexei Ozhigov
> Cc: Prafulla Wadaskar; u-boot at lists.denx.de; Prabhanjan Sarnaik; Ashish
> Karkare
> Subject: Re: [U-Boot] OpenRD Ultimate SATA & SD
> 
> On Thu, 16 Jun 2011 16:18:46 +0400, Alexei Ozhigov
> <alexei.ozhigov at gmail.com> wrote:
> ...
> >
> > I am experiencing the same problem with SATA right now with
> > v2011.06-rc2 (tried also the latest master). If MVSATA_STATUS_TIMEOUT
> > in mvsata_ide_initialize_port is ignored, SATA drive is found on the
> > second port and I am able to read the drive's content.
> 
> Inspired by what you say about timeouts, I thought perhaps increasing
> the timeout from 10ms to 1s might make a difference -- that worked!
> 
> ... except that now, it's working regardless :-(
> 
> So, I've no idea if that's really related to what's going on, because
> I've now gone as far as reducing the timeout to 5ms and it's _still_
> working fine, so perhaps some part of the SATA subsystem was in a state
> that was somehow reset by waiting a bit longer for the startup once, and
> that's somehow "fixed" it.
> 
> It is still working despite powering down the machine for a while, so
> I'm guessing whatever changed is something to do with the state of the
> hard drive.
> 
> Sadly that means that I've now lost the ability to test this, since
> trying any of the versions that were previously failing now work.
> 
> Anyway, Alexei, try increasing the timeout (i.e. the value being
> assigned to timeleft) --- if that works for you too, it seems pretty
> harmless, so might be appropriate for wider adoption.

Copying to Albert and Michael the contributor for mvsata code.

Regards..
Prafulla . .