[PATCH v2 1/5] dt-bindings: display: rk3588-dw-hdmi-qp: Add tmds-enable-gpios property

[Cristian Ciocaltea]

On 10/6/25 7:25 PM, Laurent Pinchart wrote:
> On Mon, Oct 06, 2025 at 02:19:24PM +0300, Dmitry Baryshkov wrote:
>> On Mon, Oct 06, 2025 at 02:55:37AM +0300, Laurent Pinchart wrote:
>>> From: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
>>>
>>> Add an optional property to RK3588 HDMI TX Controller binding describing
>>> a GPIO line to be asserted when operating in HDMI 1.4/2.0 TMDS mode and
>>> deasserted for HDMI 2.1 FRL.
>>>
>>> This is used to control an external level shifter for HDMI data lines.
>>>
>>> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
>>> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
>>> ---
>>>  .../display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml   | 10 ++++++++++
>>>  1 file changed, 10 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
>>> index 96b4b088eebe..eec0d40c91ea 100644
>>> --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
>>> +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
>>> @@ -113,6 +113,13 @@ properties:
>>>      description:
>>>        Additional HDMI QP related data is accessed through VO GRF regs.
>>>  
>>> +  tmds-enable-gpios:
>>> +    description:
>>> +      Optional GPIO line to be asserted when operating in HDMI 1.4/2.0
>>> +      TMDS mode and deasserted for HDMI 2.1 FRL. It can be used to control
>>> +      an external level shifter for HDMI data lines.
>>> +    maxItems: 1
>>
>> Just my 2c: since TMDS is assumed to be a default mode, shouldn't this
>> be a frl-enable-gpios instead?
> 
> I don't mind either way. Cristian, any opinion ?

No strong opinion either; we could go for Dmitry's suggestion.

>>> +
>>>  required:
>>>    - compatible
>>>    - reg
>