Hi Geert-san,
> -----Original Message-----
> From: Geert Uytterhoeven
> Sent: Monday, October 2, 2017 6:20 PM
>
> Hi Shimoda-san,
>
> On Mon, Oct 2, 2017 at 11:14 AM, Yoshihiro Shimoda
> <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
> >> -----Original Message-----
> >> From: Kieran Bingham
> >> Sent: Monday, October 2, 2017 5:45 PM
> >> On 02/10/17 09:20, Geert Uytterhoeven wrote:
> >> > On Mon, Oct 2, 2017 at 8:29 AM, Yoshihiro Shimoda
> >> > <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
<snip>
> >> The ADV7482 is currently working without interrupts at the moment. However, I do
> >> have hotplug and interrupt handling on my todo list, and infact I have already
> >> started a patch adding interrupt support.
> >>
> >>
> >> The DT currently specifies the following interrupts for the ADV7482,
> >>
> >> + video-receiver@70 {
> >> + compatible = "adi,adv7482";
> >> + interrupt-parent = <&gpio6>;
> >> + interrupt-names = "intrq1", "intrq2";
> >> + interrupts = <30 IRQ_TYPE_LEVEL_LOW>,
> >> + <31 IRQ_TYPE_LEVEL_LOW>;
> >
> > It seems Kieran-san is using non-conflict pins with usb2.0 ch3 :)
> > According to the board datasheet, GP6_30 and GP6_31 are initial setting for ADV7482 and
> > it doesn't conflict with USB 2.0 ch3 (USB2.0 ch3 pins are GP6_04 and GP6_21).
>
> Can the USB2.0 driver use GPIOs for PWEN and OVC?
No, the driver cannot use GPIOs. These pins control by a usb specific register
(e.g. in EHCI, bit 14 of PORTSC[1] for PWEN and bit 4 of PORTSC[1] for OVC),
So, I think we have no change to use GPIOs.
> > So, I think we can use both usb 2.0 ch3 and ADV7482 if we don't change the SW31 from initial setting.
>
> OK. But in that case, DT should not configure pinctrl for "usb2_ch3",
> but instead
> describe that it uses GP6_04 and GP6_21.
I got it. I will modify it.
> > However, to avoid any trouble, should we explain this SW31 setting in the dts file?
>
> Yes, it would be good to document that.
I got it. I will add it.
I will submit v2 patch tomorrow (or later).
Best regards,
Yoshihiro Shimoda
> Thanks!
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
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