80 lines
3.2 KiB
Plaintext
80 lines
3.2 KiB
Plaintext
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* Qualcomm MSM VIDC
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Required properties:
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- compatible : one of:
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- "qcom,msm-vidc"
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- qcom,hfi : supported Host-Firmware Interface, one of:
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- "venus"
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- "q6"
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- qcom,max-hw-load: The maximum load the hardware can support expressed in units
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of macroblocks per second.
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Optional properties:
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- reg : offset and length of the register set for the device.
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- interrupts : should contain the vidc interrupt.
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- qcom,vidc-cp-map : start and size of device virtual address range for
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secure buffers. Video hardware uses this address range to identify if
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the buffers are secure or non-secure.
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- qcom,vidc-ns-map : start and size of device virtual address range for
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non-secure buffers. Video hardware uses this address range to identify
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if the buffers are secure or non-secure.
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- qcom,load-freq-tbl : load (in macroblocks/sec) and corresponding vcodec
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clock required for optimal performance in descending order.
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- qcom,reg-presets : list of offset-value pairs for registers to be written.
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The offsets are from the base offset specified in 'reg'. This is mainly
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used for QoS, vbif, etc. presets for video.
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- qcom,bus-ports : number of bus ports supported by venus to access
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ddr/ocmem.
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- qcom,enc-ocmem-ab-ib : list of bus vectors (ab, ib pair) for ocmem
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bandwidth request by different video encoder usecases.
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- qcom,dec-ocmem-ab-ib : list of bus vectors(ab, ib pair) for ocmem
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bandwidth request by different video decoder usecases.
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- qcom,enc-ddr-ab-ib : list of bus vectors(ab,ib pair) for ddr bandwidth
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request by different video encoder usecases.
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- qcom,dec-ddr-ab-ib : list of bus vectors(ab, ib pair) for ddr bandwidth
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request by different video decoder usecases.
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- qcom,iommu-groups : list of IOMMU groups to be used. Groups are defined as
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phandles in <target>-iommu-domains.dtsi (e.g msm8974-v1-iommu-domains.dtsi)
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- qcom,iommu-group-buffer-types : bitmap of buffer types that can be mapped into
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the corresponding IOMMU group. Buffer types are defined within the vidc driver
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by "enum hal_buffer" in msm_smem.h
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- qcom,buffer-type-tz-usage-table : a key-value pair, mapping a buffer type
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(enum hal_buffer) to its corresponding TZ usage. The TZ usages are defined
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as "enum cp_mem_usage" in include/linux/msm_ion.h
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- qcom,has-ocmem: indicate the target has ocmem if this property exists
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Example:
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qcom,vidc@fdc00000 {
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compatible = "qcom,msm-vidc";
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reg = <0xfdc00000 0xff000>;
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interrupts = <0 44 0>;
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qcom,vidc-cp-map = <0x1000000 0x40000000>;
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qcom,vidc-ns-map = <0x40000000 0x40000000>;
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qcom,load-freq-tbl = <979200 410000000>,
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<560145 266670000>,
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<421161 200000000>,
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<243000 133330000>,
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<108000 100000000>,
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<36000 50000000>;
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qcom,has-ocmem;
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qcom,hfi = "venus";
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qcom,reg-presets = <0x80004 0x1>,
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<0x80178 0x00001FFF>;
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qcom,bus-ports = <1>;
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qcom,enc-ocmem-ab-ib = <0 0>,
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<138200 1222000>;
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qcom,dec-ocmem-ab-ib = <0 0>,
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<176900 1556640>;
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qcom,enc-ddr-ab-ib = <0 0>,
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<60000 664950>;
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qcom,dec-ddr-ab-ib = <0 0>,
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<110000 909000>;
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qcom,iommu-groups = <&venus_domain_ns &venus_domain_cp>;
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qcom,iommu-group-buffer-types = <0xfff 0x1ff>;
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qcom,buffer-type-tz-usage-table = <0x1 0x1>,
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<0x1fe 0x2>;
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qcom,max-hw-load = <1224450>; /* 4k @ 30 + 1080p @ 30*/
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};
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