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Diffstat (limited to 'dts/Bindings/media/mediatek,mdp3-rdma.yaml')
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1 files changed, 167 insertions, 0 deletions
diff --git a/dts/Bindings/media/mediatek,mdp3-rdma.yaml b/dts/Bindings/media/mediatek,mdp3-rdma.yaml new file mode 100644 index 0000000000..59db830648 --- /dev/null +++ b/dts/Bindings/media/mediatek,mdp3-rdma.yaml @@ -0,0 +1,167 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/mediatek,mdp3-rdma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek Read Direct Memory Access + +maintainers: + - Matthias Brugger <matthias.bgg@gmail.com> + - Moudy Ho <moudy.ho@mediatek.com> + +description: | + MediaTek Read Direct Memory Access(RDMA) component used to do read DMA. + It contains one line buffer to store the sufficient pixel data, and + must be siblings to the central MMSYS_CONFIG node. + For a description of the MMSYS_CONFIG binding, see + Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml + for details. + +properties: + compatible: + oneOf: + - enum: + - mediatek,mt8183-mdp3-rdma + - mediatek,mt8195-mdp3-rdma + - mediatek,mt8195-vdo1-rdma + - items: + - const: mediatek,mt8188-vdo1-rdma + - const: mediatek,mt8195-vdo1-rdma + + 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 + + mediatek,scp: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the System Control Processor (SCP) used for initializing + and stopping the MDP3, for sending frame data locations to the MDP3's + VPU and to install Inter-Processor Interrupt handlers to control + processing states. + + power-domains: + maxItems: 1 + + clocks: + items: + - description: RDMA clock + - description: RSZ clock + minItems: 1 + + iommus: + maxItems: 1 + + mboxes: + items: + - description: used for 1st data pipe from RDMA + - description: used for 2nd data pipe from RDMA + - description: used for 3rd data pipe from RDMA + - description: used for 4th data pipe from RDMA + - description: used for the data pipe from SPLIT + minItems: 1 + + interrupts: + maxItems: 1 + + '#dma-cells': + const: 1 + +required: + - compatible + - reg + - mediatek,gce-client-reg + - power-domains + - clocks + - iommus + - '#dma-cells' + +allOf: + - if: + properties: + compatible: + contains: + const: mediatek,mt8183-mdp3-rdma + + then: + properties: + clocks: + minItems: 2 + + mboxes: + minItems: 2 + + required: + - mboxes + - mediatek,gce-events + + - if: + properties: + compatible: + contains: + const: mediatek,mt8195-mdp3-rdma + + then: + properties: + clocks: + maxItems: 1 + + mboxes: + minItems: 5 + + required: + - mediatek,gce-events + + - if: + properties: + compatible: + contains: + const: mediatek,mt8195-vdo1-rdma + + then: + properties: + clocks: + maxItems: 1 + +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> + + dma-controller@14001000 { + compatible = "mediatek,mt8183-mdp3-rdma"; + reg = <0x14001000 0x1000>; + mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x1000 0x1000>; + mediatek,gce-events = <CMDQ_EVENT_MDP_RDMA0_SOF>, + <CMDQ_EVENT_MDP_RDMA0_EOF>; + power-domains = <&spm MT8183_POWER_DOMAIN_DISP>; + clocks = <&mmsys CLK_MM_MDP_RDMA0>, + <&mmsys CLK_MM_MDP_RSZ1>; + iommus = <&iommu>; + mboxes = <&gce 20 CMDQ_THR_PRIO_LOWEST>, + <&gce 21 CMDQ_THR_PRIO_LOWEST>; + #dma-cells = <1>; + }; |