On 2016-09-30 16:32:52 +0300, Laurent Pinchart wrote:
> On Friday 30 Sep 2016 15:00:59 Geert Uytterhoeven wrote:
> > On Fri, Sep 30, 2016 at 2:40 PM, Laurent Pinchart wrote:
> > >> --- a/arch/arm/boot/dts/r8a7793-gose.dts
> > >> +++ b/arch/arm/boot/dts/r8a7793-gose.dts
> > >> @@ -374,6 +374,11 @@
> > >> groups = "audio_clk_a";
> > >> function = "audio_clk";
> > >> };
> > >> +
> > >> + vin0_pins: vin0 {
> > >> + groups = "vin0_data24", "vin0_sync", "vin0_clkenb",
> > >> "vin0_clk";
> > >> + function = "vin0";
> > >> + };
> > >> };
> > >>
> > >> ðer {
> > >> @@ -531,6 +536,21 @@
> > >> };
> > >> };
> > >>
> > >> + hdmi-in@4c {
> > >> + compatible = "adi,adv7612";
> > >> + reg = <0x4c>;
> > >> + interrupt-parent = <&gpio1>;
> > >> + interrupts = <20 IRQ_TYPE_LEVEL_LOW>;
> > >
> > > Isn't the interrupt signal connected to GP4_2 ?
> >
> > No idea about Gose, but on Koelsch it is (hence koelsch DTS is wrong??)
>
> I believe so. I don't have a Koelsch board anymore so I can't test that.
> Niklas, do you have a Koelsch on which you could confirm the IRQ number ?
I have done the best I can to prove the IRQ, it proved to be a bit
tricky or maybe I'm doing it the wrong way.
I hooked up my oscilloscope to EXIO Connector D pin 7, which according
to the schematics should be GP4_2 and attached to a pull-up at 3.3v. I
can observe the pull-up and if I control the pin using the
/sys/class/gpio interface I do indeed control GP4_2, So the schematic is
correct at least this far.
The trouble I have is that the adv7612 driver do not currently consume
the interrupt so I can't see multiple field interrupts by observing the
pin. I do however see what I believe is the first field interrupt, if I
observe the pin just as I turn on my HDMI video source the pin go from 1
-> 0 but is never reset and a reset of the entire board is needed if you
wish to see it again.
If I on the other hand observe pin GP1_20 on EXIO Connector A pin 66 I
notice nothing on the oscilloscope from that it's set to 3.3V at power
on, no mater how much HDMI input i run.
In conclusion, yes I do believe the DTS is wrong and that GP4_2 is the
correct interrupt signal on Koelsch. This adds up with the schematics
and my rudimentary measurements.
--
Regards,
Niklas Söderlund
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