[PATCH v11 01/10] dt-bindings: mediatek,dp: Add Display Port binding
Rob Herring
robh at kernel.org
Tue Jun 14 13:23:36 PDT 2022
On Fri, Jun 10, 2022 at 06:55:13PM +0800, Bo-Chen Chen wrote:
> From: Markus Schneider-Pargmann <msp at baylibre.com>
>
> This controller is present on several mediatek hardware. Currently
> mt8195 and mt8395 have this controller without a functional difference,
> so only one compatible field is added.
>
> The controller can have two forms, as a normal display port and as an
> embedded display port.
>
> Signed-off-by: Markus Schneider-Pargmann <msp at baylibre.com>
> Signed-off-by: Guillaume Ranquet <granquet at baylibre.com>
> [Bo-Chen: Fix reviewers' comment]
> Signed-off-by: Bo-Chen Chen <rex-bc.chen at mediatek.com>
> ---
> .../display/mediatek/mediatek,dp.yaml | 101 ++++++++++++++++++
> 1 file changed, 101 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> new file mode 100644
> index 000000000000..10f50a0dcf49
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> @@ -0,0 +1,101 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,dp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek Display Port Controller
> +
> +maintainers:
> + - Chun-Kuang Hu <chunkuang.hu at kernel.org>
> + - Jitao shi <jitao.shi at mediatek.com>
> +
> +description: |
> + Device tree bindings for the MediaTek display port and
> + embedded display port controller present on some MediaTek SoCs.
> +
> +properties:
> + compatible:
> + enum:
> + - mediatek,mt8195-dp-tx
> + - mediatek,mt8195-edp-tx
> +
> + reg:
> + maxItems: 1
> +
> + nvmem-cells:
> + maxItems: 1
> + description: efuse data for display port calibration
> +
> + nvmem-cell-names:
> + const: dp_calibration_data
> +
> + power-domains:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/ports
> + properties:
> + port at 0:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: Input endpoint of the controller, usually dp_intf
> +
> + port at 1:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: Output endpoint of the controller
> +
> + required:
> + - port at 0
> + - port at 1
> +
> + max-lanes:
> + maxItems: 1
> + description: maximum number of lanes supported by the hardware.
We already have a 'data-lanes' property defined in
'video-interfaces.yaml' that can serve this purpose.
> +
> + max-linkrate:
> + maxItems: 1
> + description: maximum link rate supported by the hardware and unit is MHz.
Then use '-mhz' suffix on the property name. Then you don't need a type
(or maxItems).
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