3c51dd18f2
git-subtree-dir: qcom/camera git-subtree-mainline:8263fe365egit-subtree-split:a1378b76f0
184 lines
4.8 KiB
Plaintext
184 lines
4.8 KiB
Plaintext
* Qualcomm Technologies, Inc. MSM Camera VFE
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Camera VFE device provides the definitions for enabling
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the VFE hardware. It also provides the functions for the client
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to control the VFE hardware.
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=======================
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Required Node Structure
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=======================
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The VFE device is described in one level of the device node.
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======================================
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First Level Node - CAM VFE device
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======================================
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Required properties:
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- cell-index
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Usage: required
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Value type: <u32>
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Definition: Should specify the hardware index id.
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- compatible
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Usage: required
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Value type: <string>
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Definition: Should specify the compatibility string for matching the
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driver. e.g. "qcom,vfe680", "qcom,vfe680_110", "qcom,vfe580", "qcom,vfe580",
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"qcom,vfe480", "qcom,vfe175", "qcom,vfe170", "qcom,vfe175_130", "qcom,vfe170_150",
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"qcom,vfe165_160", "qcom,vfe-lite680", "qcom,vfe-lite680_110", "qcom,vfe-lite580",,
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"qcom,vfe-lite580", "qcom,vfe-lite480", "qcom,vfe-lite175",
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"qcom,vfe-lite175_130" or "qcom,vfe-lite170", "qcom,vfe-lite165".
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- reg-names
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Usage: required
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Value type: <string>
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Definition: Should specify the name of the register block.
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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: List of bases.
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- rt-wrapper-base
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Usage: required
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Value type: u32
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Definition: Titan offset of start of the RT Wrapper.
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- interrupt-names
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Usage: Required
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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: Required
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Value type: <u32>
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Definition: Interrupt associated with VFE 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 VFE HW.
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- xxxx-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 in
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"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 VFE 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 VFE 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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- src-clock-name
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Usage: required
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Value type: <string>
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Definition: Source clock name.
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Optional properties:
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- clock-names-option
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Usage: optional
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Value type: <string>
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Definition: Optional clock names.
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- clocks-option
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Usage: required if clock-names-option defined
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Value type: <phandle>
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Definition: List of optinal clocks used for VFE HW.
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- clock-rates-option
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Usage: required if clock-names-option defined
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Value type: <u32>
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Definition: List of clocks rates for optional clocks.
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- clock-control-debugfs
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Usage: optional
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Value type: <string>
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Definition: Enable/Disable clk rate control.
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- qcom,cam-cx-ipeak:
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Usage: optional
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Value type: <phandle bit>
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phandle - phandle of CX Ipeak device node
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bit - Every bit corresponds to a client of CX Ipeak
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Definition: CX Ipeak is a mitigation scheme which throttles camera frequency
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if all the clients are running at their respective threshold
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frequencies to limit CX peak current.
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driver in the relevant register.
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- scl-clk-names:
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Usage: optional
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Value type: <string>
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Definition: Scalable clock names to identify which clocks needs to update
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along with source clock.
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- cam_hw_pid:
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Usage: optional
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Value type: <u32>
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Definition: HW unique Pid values
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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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Example:
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cam_vfe0: qcom,ife0@ac62000 {
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cell-index = <0>;
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compatible = "qcom,vfe680";
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reg-names = "ife", "cam_camnoc";
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reg = <0xac62000 0xF000>,
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<0xac19000 0x9000>;
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reg-cam-base = <0x62000 0x19000>;
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rt-wrapper-base = <0x62000>;
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interrupt-names = "ife";
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interrupts = <GIC_SPI 465 IRQ_TYPE_EDGE_RISING>;
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regulator-names = "camss", "ife0";
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camss-supply = <&cam_cc_titan_top_gdsc>;
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ife0-supply = <&cam_cc_ife_0_gdsc>;
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clock-names =
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"ife_0_ahb_src",
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"ife_0_ahb",
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"ife_clk_src",
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"ife_clk";
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clocks =
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<&clock_camcc CAM_CC_FAST_AHB_CLK_SRC>,
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<&clock_camcc CAM_CC_IFE_0_FAST_AHB_CLK>,
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<&clock_camcc CAM_CC_IFE_0_CLK_SRC>,
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<&clock_camcc CAM_CC_IFE_0_CLK>;
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clock-rates =
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<100000000 0 432000000 0>,
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<200000000 0 594000000 0>,
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<300000000 0 675000000 0>,
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<400000000 0 785000000 0>,
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<400000000 0 785000000 0>;
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clock-cntl-level = "lowsvs", "svs", "svs_l1", "nominal",
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"turbo";
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src-clock-name = "ife_clk_src";
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scl-clk-names = "ife_0_ahb";
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clock-control-debugfs = "true";
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clock-names-option = "ife_dsp_clk";
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clocks-option = <&clock_camcc CAM_CC_IFE_0_DSP_CLK>;
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clock-rates-option = <594000000>;
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ubwc-static-cfg = <0x1026 0x1036>;
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cam_hw_pid = <16 28 20 8>;
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status = "ok";
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vmrm-resource-ids = <20 20 20>;
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};
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