Re: PROBLEM: Asus C201 video mode problems on HDMI hotplug (regression)

Laurent Pinchart
2017-12-04T19:34:24Z

Hi Nick,

On Monday, 4 December 2017 21:30:01 EET Nick Bowler wrote:
> On 2017-12-04 21:06 +0200, Laurent Pinchart wrote:
> > As you reported that the PLL lock failure message is not printed, the
> > failure can only come from either the extra delay introduced by the
> > above loop, or from reading the HDMI_PHY_STAT0 register.
> >
> > How many iterations of the for loop execute before the condition
> > becomes true?
>
> Judging from the log posted elsethread (where I added extra printouts),
> it seems to consistently become true on the second iteration.
>
> I will try to rule out read side effects by replacing the polling loop
> with an unconditional delay.

You're reading my mind :-)

--
Regards,

Laurent Pinchart