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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/mediatek/mediatek,wdma.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MediaTek Write Direct Memory Access
maintainers:
- Matthias Brugger <matthias.bgg@gmail.com>
- Moudy Ho <moudy.ho@mediatek.com>
description: |
MediaTek Write Direct Memory Access(WDMA) component used to write
the data into DMA.
properties:
compatible:
items:
- enum:
- mediatek,mt8183-mdp3-wdma
reg:
maxItems: 1
mediatek,gce-client-reg:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
items:
- description: phandle of GCE
- description: GCE subsys id
- description: register offset
- description: register size
description: The register of client driver can be configured by gce with
4 arguments defined in this property. Each GCE subsys id is mapping to
a client defined in the header include/dt-bindings/gce/<chip>-gce.h.
mediatek,gce-events:
description:
The event id which is mapping to the specific hardware event signal
to gce. The event id is defined in the gce header
include/dt-bindings/gce/<chip>-gce.h of each chips.
$ref: /schemas/types.yaml#/definitions/uint32-array
power-domains:
maxItems: 1
clocks:
minItems: 1
iommus:
maxItems: 1
required:
- compatible
- reg
- mediatek,gce-client-reg
- mediatek,gce-events
- power-domains
- clocks
- iommus
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/mt8183-clk.h>
#include <dt-bindings/gce/mt8183-gce.h>
#include <dt-bindings/power/mt8183-power.h>
#include <dt-bindings/memory/mt8183-larb-port.h>
mdp3_wdma: mdp3-wdma@14006000 {
compatible = "mediatek,mt8183-mdp3-wdma";
reg = <0x14006000 0x1000>;
mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x6000 0x1000>;
mediatek,gce-events = <CMDQ_EVENT_MDP_WDMA0_SOF>,
<CMDQ_EVENT_MDP_WDMA0_EOF>;
power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
clocks = <&mmsys CLK_MM_MDP_WDMA0>;
iommus = <&iommu>;
};
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