0b9431c822
As Liviu pointed out, the arm,malidp-arqos-high-level property
mentioned in the original .txt binding was a mistake, and
arm,malidp-arqos-value needs to take its place.
The binding commit ce6eb0253cba ("dt/bindings: display: Add optional
property node define for Mali DP500") mentions the right name in the
commit message, but has the wrong name in the diff.
Commit d298e6a27a81 ("drm/arm/mali-dp: Add display QoS interface
configuration for Mali DP500") uses the property in the driver, but uses
the shorter name.
Remove the wrong property from the binding, and use the proper name in
the example. The actual property was already documented properly.
Fixes: 2c8b082a3ab1 ("dt-bindings: display: convert Arm Mali-DP to DT schema")
Link: https://lore.kernel.org/linux-arm-kernel/YnumGEilUblhBx8E@e110455-lin.cambridge.arm.com/
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reported-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220609162729.1441760-1-andre.przywara@arm.com
120 lines
3.4 KiB
YAML
120 lines
3.4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/display/arm,malidp.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Arm Mali Display Processor (Mali-DP) binding
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maintainers:
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- Liviu Dudau <Liviu.Dudau@arm.com>
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- Andre Przywara <andre.przywara@arm.com>
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description:
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The following bindings apply to a family of Display Processors sold as
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licensable IP by ARM Ltd. The bindings describe the Mali DP500, DP550 and
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DP650 processors that offer multiple composition layers, support for
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rotation and scaling output.
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properties:
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compatible:
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enum:
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- arm,mali-dp500
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- arm,mali-dp550
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- arm,mali-dp650
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reg:
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maxItems: 1
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interrupts:
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items:
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- description:
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The interrupt used by the Display Engine (DE). Can be shared with
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the interrupt for the Scaling Engine (SE), but it will have to be
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listed individually.
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- description:
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The interrupt used by the Scaling Engine (SE). Can be shared with
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the interrupt for the Display Engine (DE), but it will have to be
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listed individually.
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interrupt-names:
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items:
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- const: DE
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- const: SE
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clock-names:
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items:
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- const: pxlclk
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- const: mclk
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- const: aclk
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- const: pclk
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clocks:
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items:
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- description: the pixel clock feeding the output PLL of the processor
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- description: the main processor clock
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- description: the AXI interface clock
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- description: the APB interface clock
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memory-region:
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maxItems: 1
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description:
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Phandle to a node describing memory to be used for the framebuffer.
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If not present, the framebuffer may be located anywhere in memory.
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arm,malidp-output-port-lines:
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$ref: /schemas/types.yaml#/definitions/uint8-array
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description:
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Number of output lines/bits for each colour channel.
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items:
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- description: number of output lines for the red channel (R)
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- description: number of output lines for the green channel (G)
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- description: number of output lines for the blue channel (B)
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arm,malidp-arqos-value:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Quality-of-Service value for the display engine FIFOs, to write
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into the RQOS register of the DP500.
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See the ARM Mali-DP500 TRM for details on the encoding.
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If omitted, the RQOS register will not be changed.
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port:
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$ref: /schemas/graph.yaml#/properties/port
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unevaluatedProperties: false
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description:
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Output endpoint of the controller, connecting the LCD panel signals.
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additionalProperties: false
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-names
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- clocks
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- clock-names
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- port
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- arm,malidp-output-port-lines
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examples:
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- |
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dp0: malidp@6f200000 {
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compatible = "arm,mali-dp650";
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reg = <0x6f200000 0x20000>;
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memory-region = <&display_reserved>;
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interrupts = <168>, <168>;
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interrupt-names = "DE", "SE";
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clocks = <&oscclk2>, <&fpgaosc0>, <&fpgaosc1>, <&fpgaosc1>;
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clock-names = "pxlclk", "mclk", "aclk", "pclk";
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arm,malidp-output-port-lines = /bits/ 8 <8 8 8>;
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arm,malidp-arqos-value = <0xd000d000>;
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port {
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dp0_output: endpoint {
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remote-endpoint = <&tda998x_2_input>;
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};
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};
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};
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...
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