Re: [PATCH v8 6/8] MIPS: DTS: CI20: Add DT nodes for HDMI setup

[Geert Uytterhoeven]

Hi Nikolaus,

On Wed, Nov 24, 2021 at 5:19 PM H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> wrote:
> > Am 23.11.2021 um 21:10 schrieb Paul Cercueil <paul@xxxxxxxxxxxxxxx>:
> > Le mar., nov. 23 2021 at 19:13:59 +0100, H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> a écrit :
> >> +    assigned-clock-rates = <48000000>, <0>, <54000000>, <0>, <27000000>;
> >> };
> >> &tcu {
> >> @@ -509,6 +534,19 @@ pins_i2c4: i2c4 {
> >>              bias-disable;
> >>      };
> >> +    pins_hdmi_ddc: hdmi_ddc {
> >> +            function = "hdmi-ddc";
> >> +            groups = "hdmi-ddc";
> >> +            bias-disable;
> >> +    };
> >> +
> >> +    /* switch to PF25 as gpio driving DDC_SDA low */
> >> +    pins_hdmi_ddc_unwedge: hdmi_ddc {
> >> +            function = "hdmi-ddc";
> >> +            groups = "hdmi-ddc";
> >> +            bias-disable;
> >> +    };
> >
> > Your pins_hdmi_ddc and pins_hdmi_ddc_unwedge are the exact same? You could just use the former and pass it to both pinctrl-0 and pinctrl-1.
>
> This was forgotten to remove. We do not make use of the unwedge feature because I could not find out how to use pinctrl to switch this to gpio25 and drive it low.

Using gpio-hog?

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