On Sat, May 17, 2014 at 9:46 AM, Shawn Guo <shawn.guo@xxxxxxxxxxxxx> wrote: > The commit e783c51 (ahci: imx: software workaround for phy reset issue > in resume) calls imx_sata_phy_reset() to reset phy immediately after > SATA MPLL is enabled. It seems working fine mostly, but fails in some > case as below. > > ... > ahci-imx 2200000.sata: failed to reset phy: -110 > ahci-imx: probe of 2200000.sata failed with error -110 > > After talking to the designer, we learnt that when enabling i.MX6Q SATA > MPLL, we need to wait 100us for it to settle down for safety. Add this > required delay to fix above failure. > > Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxxxxx> On my sabresd board that was not connected to any sata disk I was always getting the 'failed to reset phy' error. With this patch the error goes away and the driver probes successfully. Tested-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
