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Date:   Thu, 27 Jul 2023 19:26:28 +0300
From:   Svyatoslav Ryhel <clamor95@gmail.com>
To:     Thierry Reding <thierry.reding@gmail.com>
CC:     Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        Mikko Perttunen <mperttunen@nvidia.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Maxim Schwalm <maxim.schwalm@gmail.com>,
        Dmitry Osipenko <digetx@gmail.com>, devicetree@vger.kernel.org,
        linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
        dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v2 2/2] ARM: tegra: transformers: add connector node
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27 =D0=BB=D0=B8=D0=BF=D0=BD=D1=8F 2023 =D1=80=2E 18:11:15 GMT+03:00, Thier=
ry Reding <thierry=2Ereding@gmail=2Ecom> =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=
=B0=D0=B2(-=D0=BB=D0=B0):
>On Sun, Jun 18, 2023 at 11:50:46AM +0300, Svyatoslav Ryhel wrote:
>> All ASUS Transformers have micro-HDMI connector directly available=2E
>> After Tegra HDMI got bridge/connector support, we should use connector
>> framework for proper HW description=2E
>>=20
>> Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo=2Ecom> # ASUS TF T30
>> Tested-by: Robert Eckelmann <longnoserob@gmail=2Ecom> # ASUS TF101 T20
>> Tested-by: Svyatoslav Ryhel <clamor95@gmail=2Ecom> # ASUS TF201 T30
>> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail=2Ecom>
>> ---
>>  arch/arm/boot/dts/tegra20-asus-tf101=2Edts      | 22 ++++++++++++++++-=
--
>>  =2E=2E=2E/dts/tegra30-asus-transformer-common=2Edtsi  | 21 +++++++++++=
+++++--
>>  2 files changed, 38 insertions(+), 5 deletions(-)
>>=20
>> diff --git a/arch/arm/boot/dts/tegra20-asus-tf101=2Edts b/arch/arm/boot=
/dts/tegra20-asus-tf101=2Edts
>> index c2a9c3fb5b33=2E=2E97350f566539 100644
>> --- a/arch/arm/boot/dts/tegra20-asus-tf101=2Edts
>> +++ b/arch/arm/boot/dts/tegra20-asus-tf101=2Edts
>> @@ -82,9 +82,11 @@ hdmi@54280000 {
>>  			pll-supply =3D <&hdmi_pll_reg>;
>>  			hdmi-supply =3D <&vdd_hdmi_en>;
>> =20
>> -			nvidia,ddc-i2c-bus =3D <&hdmi_ddc>;
>> -			nvidia,hpd-gpio =3D <&gpio TEGRA_GPIO(N, 7)
>> -				GPIO_ACTIVE_HIGH>;
>> +			port@0 {
>> +				hdmi_out: endpoint {
>> +					remote-endpoint =3D <&connector_in>;
>> +				};
>> +			};
>
>Does this need a bindings change? nvidia,tegra20-hdmi currently doesn't
>support OF graphs, so this would probably fail to validate if we merge
>it without a corresponding DT bindings update=2E

drm/tegra patch is backwards compatible and connector node is optional=2E

>Thierry