Dove clock support

Andrew Lunn andrew at
Tue Jun 19 15:32:51 EDT 2012

On Tue, Jun 19, 2012 at 12:10:16AM +0200, Sebastian Hesselbarh wrote:
> On 06/18/2012 11:41 PM, Simon Baatz wrote:
> >This is not potentially a problem, this is definitively a problem (on kirkwood):
> >
> >[   12.280783] sata_mv sata_mv.0: cannot get optional clkdev
> >[   12.286314] sata_mv sata_mv.0: slots 32 ports 2
> >...
> >[   12.665882] ata1: SATA link down (SStatus 0 SControl F300)
> >[   13.015881] ata2: SATA link down (SStatus 0 SControl F300)
> Is this because of some bug in kirkwood soc or missing code in
> sata_mv.c?
> According to the functional specification of kirkwood there is a
> PhyShutdown bit in it's registers. Dove also has this register bit.
> Up to now it looks like the SATA PHY can only be disabled in code,
> but there should be an phy_enable, too.


When moving from kirkwoods old clock management to the generic clock
framework, i kept the functionality the same. The old code would turn
the PHYs off, but have no way to turn them back on again. The new code
is the same.


More information about the linux-arm-kernel mailing list