3c51dd18f2
git-subtree-dir: qcom/camera git-subtree-mainline:8263fe365egit-subtree-split:a1378b76f0
204 lines
4.9 KiB
Plaintext
204 lines
4.9 KiB
Plaintext
* Qualcomm Technologies, Inc. MSM Camera CDM
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CDM (Camera Data Mover) is module intended to provide means for fast programming
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camera registers and lookup tables.
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=======================
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Required Node Structure
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=======================
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CDM Interface node takes care of the handling has HW nodes and provide interface
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for camera clients.
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- compatible
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Usage: required
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Value type: <string>
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Definition: Should be "qcom,cam-cdm-intf".
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- label
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Usage: required
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Value type: <string>
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Definition: Should be "cam-cdm-intf".
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- num-hw-cdm
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Usage: required
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Value type: <u32>
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Definition: Number of supported HW blocks.
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- cdm-client-names
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Usage: required
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Value type: <string>
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Definition: List of Clients supported by CDM interface.
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Example:
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qcom,cam-cdm-intf {
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compatible = "qcom,cam-cdm-intf";
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label = "cam-cdm-intf";
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num-hw-cdm = <1>;
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cdm-client-names = "vfe",
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"jpeg-dma",
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"jpeg",
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"fd";
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};
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=======================
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Required Node Structure
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=======================
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CDM HW node provides interface for camera clients through
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to CDM interface node.
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- cell-index
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Usage: required
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Value type: <u32>
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Definition: Node instance number.
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- compatible
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Usage: required
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Value type: <string>
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Definition: Should be "qcom,cam170-cpas-cdm0", "qcom,cam480-cpas-cdm0",
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"qcom,cam480-cpas-cdm1", "qcom,cam480-cpas-cdm2", "qcom,cam-cpas-cdm1_0",
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"qcom,cam-cpas-cdm1_1", "qcom,cam-cpas-cdm1_2", "qcom,cam-ife-cdm1_2",
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"qcom,cam-cpas-cdm2_0", "qcom,cam-ope-cdm2_0", "qcom,cam-cpas-cdm2_1",
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"qcom,cam-rt-cdm2_1" or "qcom,cam-ope-cdm2_1"
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- label
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Usage: required
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Value type: <string>
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Definition: Should be "cpas-cdm", "ife-cdm", or "rt-cdm".
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- reg-names
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Usage: required
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Value type: <string>
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Definition: Name of the register resources.
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- reg
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Usage: required
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Value type: <u32>
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Definition: Register values.
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- reg-cam-base
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Usage: required
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Value type: <u32>
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Definition: Offset of the register space compared to
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to Camera base register space.
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- interrupt-names
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Usage: optional
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Value type: <string>
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Definition: Name of the interrupt.
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- interrupts
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Usage: optional
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Value type: <u32>
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Definition: Interrupt associated with CDM HW.
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- regulator-names
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Usage: required
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Value type: <string>
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Definition: Name of the regulator resources for CDM HW.
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- camss-supply
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Usage: required
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Value type: <phandle>
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Definition: Regulator reference corresponding to the names listed
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in "regulator-names".
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- clock-names
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Usage: required
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Value type: <string>
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Definition: List of clock names required for CDM HW.
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- clocks
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Usage: required
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Value type: <phandle>
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Definition: List of clocks used for CDM HW.
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- clock-rates
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Usage: required
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Value type: <u32>
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Definition: List of clocks rates.
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- clock-cntl-level
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Usage: required
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Value type: <string>
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Definition: List of strings corresponds clock-rates levels.
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Supported strings: minsvs, lowsvs, svs, svs_l1, nominal, turbo.
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- cdm-client-names
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Usage: required
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Value type: <string>
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Definition: List of Clients supported by CDM HW node.
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- config-fifo
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Usage: required
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Value type: <empty>
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Definition: Flag to let driver know whether to load fifo depths
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from property fifo-depths or not.
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- fifo-depths
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Usage: required
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Value type: <u32>
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Definition: List of fifo depths supported by device.
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- single-context-cdm
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Usage: required
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Value type: <empty>
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Definition: Flag to indicate that the CDM is being used in single
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context mode.
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- nrt-device
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Usage: optional
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Value type: <empty>
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Definition: Flag to indicate whether this is non real time device.
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- vmrm-resource-ids
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Usage: optional
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Value type: <u32>
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Definition: should specify vmrm resource id list order is mem label,
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mem tag, irq1 label, irq2 label.
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- override-cdm-family
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Usage: optional
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Value type: <u32>
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Definition: should specify cdm family.
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- override-cdm-version
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Usage: optional
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Value type: <u32>
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Definition: should specify cdm version.
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Example:
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qcom,cpas-cdm0@ac48000 {
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cell-index = <0>;
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compatible = "qcom,cam170-cpas-cdm0";
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label = "cpas-cdm0";
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reg = <0xac48000 0x1000>;
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reg-names = "cpas-cdm";
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interrupts = <0 461 0>;
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interrupt-names = "cpas-cdm";
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regulator-names = "camss";
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camss-supply = <&titan_top_gdsc>;
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clock-names = "soc_ahb_clk",
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"titan_top_ahb_clk",
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"cam_axi_clk",
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"camcc_slow_ahb_clk_src",
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"cpas_top_ahb_clk",
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"camnoc_axi_clk";
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clocks = <&clock_camcc CAM_CC_SOC_AHB_CLK>,
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<&clock_gcc GCC_CAMERA_AHB_CLK>,
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<&clock_gcc GCC_CAMERA_AXI_CLK>,
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<&clock_camcc CAM_CC_SLOW_AHB_CLK_SRC>,
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<&clock_camcc CAM_CC_CPAS_AHB_CLK>,
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<&clock_camcc CAM_CC_CAMNOC_AXI_CLK>;
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qcom,clock-rates = <0 80000000 80000000 80000000 80000000 80000000>;
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clock-cntl-level = "turbo";
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nrt-device;
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cdm-client-names = "ife0";
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config-fifo;
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fifo-depths = <64 0 0 0>;
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single-context-cdm;
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vmrm-resource-ids = <12 12 12>;
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override-cdm-family = <0>;
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override-cdm-version = <0x20020000>;
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status = "ok";
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};
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