linux-kernel - Re: [PATCH v1 2/7] dt-bindings: display: mediatek: Add binding for MT8195 HDMI-TX v2

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Message-ID: <721896498fe9a5ba5a942fe837deb90d461b5090.camel@mediatek.com>
Date: Thu, 28 Nov 2024 06:02:23 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>
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Subject: Re: [PATCH v1 2/7] dt-bindings: display: mediatek: Add binding for
 MT8195 HDMI-TX v2

Hi, Angelo:

On Wed, 2024-11-20 at 13:45 +0100, AngeloGioacchino Del Regno wrote:
> External email : Please do not click links or open attachments until you have verified the sender or the content.
> 
> 
> Add a binding for the HDMI TX v2 Encoder found in MediaTek MT8195
> and MT8188 SoCs.
> 
> This fully supports the HDMI Specification 2.0b, hence it provides
> support for 3D-HDMI, Polarity inversion, up to 16 bits Deep Color,
> color spaces including RGB444, YCBCR420/422/444 (ITU601/ITU709) and
> xvYCC, with output resolutions up to 3840x2160p@...z.
> 
> Moreover, it also supports HDCP 1.4 and 2.3, Variable Refresh Rate
> (VRR) and Consumer Electronics Control (CEC).
> 
> This IP also includes support for HDMI Audio, including IEC60958
> and IEC61937 SPDIF, 8-channel PCM, DSD, and other lossless audio
> according to HDMI 2.0.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---
>  .../mediatek/mediatek,mt8195-hdmi.yaml        | 150 ++++++++++++++++++
>  1 file changed, 150 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,mt8195-hdmi.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8195-hdmi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8195-hdmi.yaml
> new file mode 100644
> index 000000000000..273a8871461e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8195-hdmi.yaml
> @@ -0,0 +1,150 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: https://urldefense.com/v3/__http://devicetree.org/schemas/display/mediatek/mediatek,mt8195-hdmi.yaml*__;Iw!!CTRNKA9wMg0ARbw!lu0D_C3TwQ2-02jWYABnMIQ8vEoUwP0O4gbQndJnPUMpdi6wXdAHra9ivCfB7zoelDI7qsS20YdRlmP4bEKAABletXFX$
> +$schema: https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!lu0D_C3TwQ2-02jWYABnMIQ8vEoUwP0O4gbQndJnPUMpdi6wXdAHra9ivCfB7zoelDI7qsS20YdRlmP4bEKAAFlnY-KY$
> +
> +title: MediaTek HDMI-TX v2 Encoder
> +
> +maintainers:
> +  - AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> +  - CK Hu <ck.hu@...iatek.com>
> +
> +description: |
> +  The MediaTek HDMI-TX v2 encoder can generate HDMI format data based on
> +  the HDMI Specification 2.0b.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt8188-hdmi-tx
> +      - mediatek,mt8195-hdmi-tx
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: HDMI APB clock
> +      - description: HDCP top clock
> +      - description: HDCP reference clock
> +      - description: VPP HDMI Split clock

I would like to know more about HDMI v2.
Would you map each v2 clock to v1 clock?
If one clock has no mapping, is it a new feature that v1 does not has?

Regards,
CK

> +
> +  clock-names:
> +    items:
> +      - const: bus
> +      - const: hdcp
> +      - const: hdcp24m
> +      - const: hdmi-split
> +
> 
> --
> 2.47.0
>