[v3,0/6] dt-bindings: display: Convert DWC HDMI TX bindings to YAML

Hello,

This patch series attempts a conversion of the DWC HDMI TX DT bindings
to YAML. It's mostly identical to v2, with Mark Yao's e-mail address
updated, tags picked, a small MAINTAINERS updated, and the series now
sent to the devicetree@vger.kernel.org mailing list.

The DWC HDMI TX is an HDMI transmitter IP core from Synopsys, integrated
in various SoCs with different glue layers. As such, some properties are
defined in a common document, but sometimes need to be overridden by
platform-specific bindings.

Patch 1/6 adds a base schema for the common properties, based on the
existing dw_hdmi.txt document. Patches 2/6 to 4/6 then convert the
platform-specific bindings for Renesas, NXP and Rockchip SoCs. Patch 5/6
replaces the reference to dw_hdmi.txt in the Allwinner bindings with a
reference to the YAML base schema, and patch 6/6 drops dw_hdmi.txt.

Compared to v1 (sent as an RFC), the base schema now works properly on
all three platforms, and the schemas have been converted to use the OF
graph schema. A more detailed changelog is available in individual
patches.

I have volunteered Philipp Zabel and Mark Yao as maintainers for the
i.MX6 and Rockchip bindings respectively. Please let me know if you
would prefer a different maintainer, or ack the respective patch if this
is fine with you.

Laurent Pinchart (6):
  dt-bindings: display: bridge: Add YAML schema for Synopsys DW-HDMI
  dt-bindings: display: bridge: renesas,dw-hdmi: Convert binding to YAML
  dt-bindings: display: imx: hdmi: Convert binding to YAML
  dt-bindings: display: rockchip: dw-hdmi: Convert binding to YAML
  dt-bindings: display: sun8i-a83t-dw-hdmi: Reference dw-hdmi YAML
    schema
  dt-bindings: display: bridge: Remove deprecated dw_hdmi.txt

 .../display/allwinner,sun8i-a83t-dw-hdmi.yaml |   4 +-
 .../bindings/display/bridge/dw_hdmi.txt       |  33 ----
 .../display/bridge/renesas,dw-hdmi.txt        |  88 ----------
 .../display/bridge/renesas,dw-hdmi.yaml       | 128 ++++++++++++++
 .../display/bridge/synopsys,dw-hdmi.yaml      |  58 +++++++
 .../bindings/display/imx/fsl,imx6-hdmi.yaml   | 130 ++++++++++++++
 .../devicetree/bindings/display/imx/hdmi.txt  |  65 -------
 .../display/rockchip/dw_hdmi-rockchip.txt     |  74 --------
 .../display/rockchip/rockchip,dw-hdmi.yaml    | 158 ++++++++++++++++++
 MAINTAINERS                                   |   2 +-
 10 files changed, 477 insertions(+), 263 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt
 delete mode 100644 Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.txt
 create mode 100644 Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.yaml
 create mode 100644 Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx6-hdmi.yaml
 delete mode 100644 Documentation/devicetree/bindings/display/imx/hdmi.txt
 delete mode 100644 Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
 create mode 100644 Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml

On Tue, Jan 05, 2021 at 08:08:13AM +0200, Laurent Pinchart wrote:
> Add a .yaml schema containing the common properties for the Synopsys
> DesignWare HDMI TX controller. This isn't a full device tree binding
> specification, but is meant to be referenced by platform-specific
> bindings for the IP core.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

I forgot to add

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>

here.

> ---
> Changes since v1:
> 
> - Add default to reg-io-width property
> - Add additionalProperties
> - Rebase on top of OF graph schema, dropped redundant properties
> - Drop cec clock as it's device-specific
> - Increase max clocks to 5 to accommodate the Rockchip DW-HDMI
> ---
>  .../display/bridge/synopsys,dw-hdmi.yaml      | 58 +++++++++++++++++++
>  1 file changed, 58 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
> new file mode 100644
> index 000000000000..96c4bc06dbe7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/synopsys,dw-hdmi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Common Properties for Synopsys DesignWare HDMI TX Controller
> +
> +maintainers:
> +  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> +
> +description: |
> +  This document defines device tree properties for the Synopsys DesignWare HDMI
> +  TX controller (DWC HDMI TX) IP core. It doesn't constitute a full device tree
> +  binding specification by itself but is meant to be referenced by device tree
> +  bindings for the platform-specific integrations of the DWC HDMI TX.
> +
> +  When referenced from platform device tree bindings the properties defined in
> +  this document are defined as follows. The platform device tree bindings are
> +  responsible for defining whether each property is required or optional.
> +
> +properties:
> +  reg:
> +    maxItems: 1
> +
> +  reg-io-width:
> +    description:
> +      Width (in bytes) of the registers specified by the reg property.
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - enum: [1, 4]
> +    default: 1
> +
> +  clocks:
> +    minItems: 2
> +    maxItems: 5
> +    items:
> +      - description: The bus clock for either AHB and APB
> +      - description: The internal register configuration clock
> +    additionalItems: true
> +
> +  clock-names:
> +    minItems: 2
> +    maxItems: 5
> +    items:
> +      - const: iahb
> +      - const: isfr
> +    additionalItems: true
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +additionalProperties: true
> +
> +...