SATA FSL and upstreaming

[Xie Shaohui-B21989]

Hi, Ben,

Since the p5020ds you tested is a rev1 chip, I think the most possibility that SATA not work
is due to a SATA erratum, which is fixed in rev1.1, we have a policy that patches for errata that 
are present only on early silicon revisions, typically only rev1 silicon will not send upstream.
You can find the patch at below link:
http://git.freescale.com/git/cgit.cgi/ppc/sdk/linux.git/commit/?id=b79a8a0528b8a0008cb76f339806b1200b5d8f63

Since it is not sent to upstream, it may need to be rebased if apply it to latest tree.

Also there might be another issue(SATA & USB) if you test 64 bit kernel on p5020ds with DRR > 4G, we have a patch
Sent to upstream, but not accepted yet. Link as below:
http://patchwork.ozlabs.org/patch/179828/

There are online documents of SDK, for the p5020ds hardware please see the link:
http://www.freescale.com/infocenter/index.jsp?topic=%2FQORIQSDK%2F2989554.html


Best Regards, 
Shaohui Xie
> -----Original Message-----
> From: Benjamin Herrenschmidt [mailto:benh at kernel.crashing.org]
> Sent: Thursday, May 16, 2013 12:48 PM
> To: Liu Qiang-B32616; Xie Shaohui-B21989; Fleming Andy-AFLEMING
> Cc: linuxppc-dev at lists.ozlabs.org; Kumar Gala
> Subject: SATA FSL and upstreaming
> 
> Hi folks !
> 
> So I was trying to use my 5020ds to test some stuff today. Since I hadn't
> used it in a while, I decided to "upgrade" it to the latest NOR etc...
> 
> Interestingly I discovered that the SATA (which was supposedly dead on
> the rev1 chip) was actually working with the SDK kernel, while it's still
> completely busted upstream.
> 
> A quick git compare shows about 5 or 6 commits in the SDK tree, some as
> old as 2011, fixing various erratas in that chip, that never made their
> way upstream.
> 
> Any reason for that ? Being GPL, I can submit them to Tejun myself but it
> would be better form if you guys did :-)
> 
> BTW. Also what's the status with getting the network working upstream ?
> Even if sub-standard the code could at least go into staging...
> 
> Cheers,
> Ben.
> 
>