[PATCH 2/2] ahci_xgene: Implement the workaround to support PMP enumeration and discovery for APM X-Gene SoC AHCI SATA Host Controller driver.
tj at kernel.org
Mon Jan 5 05:59:50 PST 2015
On Mon, Jan 05, 2015 at 08:30:05AM -0500, Tejun Heo wrote:
> On Mon, Jan 05, 2015 at 03:51:45PM +0530, Suman Tripathi wrote:
> > Due to H/W errata, the controller is unable to save the PMP
> > field fetched from command header before sending the H2D FIS.
> > When the device returns the PMP port field in the D2H FIS, there is
> > a mismatch and results in command completion failure. The workaround
> > is to write the pmp value to PxFBS.DEV field before issuing any command
> > to PMP.
> > Signed-off-by: Suman Tripathi <stripathi at apm.com>
> Applied 1-2 to libata/for-3.20.
Reverted due to conflicts with the endian fix patches. Please rebase
these two on top of them.
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