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Date:   Thu, 12 Jul 2018 08:46:01 +0200
From:   Maxime Ripard <maxime.ripard@bootlin.com>
To:     Icenowy Zheng <icenowy@aosc.io>
Cc:     Chen-Yu Tsai <wens@csie.org>, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-sunxi@googlegroups.com
Subject: Re: [linux-sunxi] Re: [PATCH 1/2] ARM: sun8i: h3: enable HDMI output
 on Banana Pi M2 Zero
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On Wed, Jul 11, 2018 at 11:15:50PM +0800, Icenowy Zheng wrote:
>=20
>=20
> =E4=BA=8E 2018=E5=B9=B47=E6=9C=8811=E6=97=A5 GMT+08:00 =E4=B8=8B=E5=8D=88=
11:05:32, Maxime Ripard <maxime.ripard@bootlin.com> =E5=86=99=E5=88=B0:
> >Hi,
> >
> >On Wed, Jul 11, 2018 at 09:22:32PM +0800, Icenowy Zheng wrote:
> >> Banana Pi M2 Zero board has a miniHDMI port connected to the HDMI
> >> controller of Allwinner H3 SoC.
> >>=20
> >> Enable the HDMI output in Banana Pi M2 Zero device tree.
> >>=20
> >> Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
> >> ---
> >>  .../dts/sun8i-h2-plus-bananapi-m2-zero.dts    | 25
> >+++++++++++++++++++
> >>  1 file changed, 25 insertions(+)
> >>=20
> >> diff --git a/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
> >b/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
> >> index 7d01f9322658..eb61dcf32797 100644
> >> --- a/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
> >> +++ b/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
> >> @@ -26,6 +26,17 @@
> >>  		stdout-path =3D "serial0:115200n8";
> >>  	};
> >> =20
> >> +	hdmi-connector {
> >> +		compatible =3D "hdmi-connector";
> >> +		type =3D "c";
> >
> >This is not one of the connector type declared in DRM, how is it
> >exposed to the userspace?
>=20
> So just use "A" here (because of single link)?

If the connector type is C, it should be C, and DRM / driver adjusted
to handle it.

Maxime

--=20
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

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