linux-loongson/Documentation/devicetree/bindings/display/rockchip/rockchip-drm.yaml
Rob Herring 39bd2b6a37 dt-bindings: Improve phandle-array schemas
The 'phandle-array' type is a bit ambiguous. It can be either just an
array of phandles or an array of phandles plus args. Many schemas for
phandle-array properties aren't clear in the schema which case applies
though the description usually describes it.

The array of phandles case boils down to needing:

items:
  maxItems: 1

The phandle plus args cases should typically take this form:

items:
  - items:
      - description: A phandle
      - description: 1st arg cell
      - description: 2nd arg cell

With this change, some examples need updating so that the bracketing of
property values matches the schema.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Georgi Djakov <djakov@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20220119015038.2433585-1-robh@kernel.org
2022-02-04 09:43:42 -06:00

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YAML

# SPDX-License-Identifier: (GPL-2.0-only)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/rockchip/rockchip-drm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Rockchip DRM master device
maintainers:
- Sandy Huang <hjc@rock-chips.com>
- Heiko Stuebner <heiko@sntech.de>
description: |
The Rockchip DRM master device is a virtual device needed to list all
vop devices or other display interface nodes that comprise the
graphics subsystem.
properties:
compatible:
const: rockchip,display-subsystem
ports:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
maxItems: 1
description: |
Should contain a list of phandles pointing to display interface port
of vop devices. vop definitions as defined in
Documentation/devicetree/bindings/display/rockchip/rockchip-vop.yaml
required:
- compatible
- ports
additionalProperties: false
examples:
- |
display-subsystem {
compatible = "rockchip,display-subsystem";
ports = <&vopl_out>, <&vopb_out>;
};