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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/mediatek/mediatek,dsc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: mediatek display DSC controller
maintainers:
- Chun-Kuang Hu <chunkuang.hu@kernel.org>
- Philipp Zabel <p.zabel@pengutronix.de>
description: |
The DSC standard is a specification of the algorithms used for
compressing and decompressing image display streams, including
the specification of the syntax and semantics of the compressed
video bit stream. DSC is designed for real-time systems with
real-time compression, transmission, decompression and Display.
properties:
compatible:
oneOf:
- enum:
- mediatek,mt8195-disp-dsc
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: DSC Wrapper Clock
power-domains:
description: A phandle and PM domain specifier as defined by bindings of
the power controller specified by phandle. See
Documentation/devicetree/bindings/power/power-domain.yaml for details.
mediatek,gce-client-reg:
description:
The register of client driver can be configured by gce with 4 arguments
defined in this property, such as phandle of gce, subsys id,
register offset and size.
Each subsys id is mapping to a base address of display function blocks
register which is defined in the gce header
include/dt-bindings/gce/<chip>-gce.h.
$ref: /schemas/types.yaml#/definitions/phandle-array
maxItems: 1
ports:
$ref: /schemas/graph.yaml#/properties/ports
description:
Input and output ports can have multiple endpoints, each of those
connects to either the primary, secondary, etc, display pipeline.
properties:
port@0:
$ref: /schemas/graph.yaml#/properties/port
description:
Display Stream Compression input, usually from one of the DITHER
or MERGE blocks.
port@1:
$ref: /schemas/graph.yaml#/properties/port
description:
Display Stream Compression output to the input of the next desired
component in the display pipeline, for example to MERGE, DP_INTF,
DPI or DSI.
required:
- port@0
- port@1
required:
- compatible
- reg
- interrupts
- power-domains
- clocks
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/mt8195-clk.h>
#include <dt-bindings/power/mt8195-power.h>
#include <dt-bindings/gce/mt8195-gce.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
dsc0: disp_dsc_wrap@1c009000 {
compatible = "mediatek,mt8195-disp-dsc";
reg = <0 0x1c009000 0 0x1000>;
interrupts = <GIC_SPI 645 IRQ_TYPE_LEVEL_HIGH 0>;
power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS0>;
clocks = <&vdosys0 CLK_VDO0_DSC_WRAP0>;
mediatek,gce-client-reg = <&gce1 SUBSYS_1c00XXXX 0x9000 0x1000>;
};
};
|
