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* Qualcomm Technologies, Inc. MSM Camera CDM
CDM (Camera Data Mover) is module intended to provide means for fast programming
camera registers and lookup tables.
=======================
Required Node Structure
=======================
CDM Interface node takes care of the handling has HW nodes and provide interface
for camera clients.
- compatible
Usage: required
Value type: <string>
Definition: Should be "qcom,cam-cdm-intf".
- label
Usage: required
Value type: <string>
Definition: Should be "cam-cdm-intf".
- num-hw-cdm
Usage: required
Value type: <u32>
Definition: Number of supported HW blocks.
- cdm-client-names
Usage: required
Value type: <string>
Definition: List of Clients supported by CDM interface.
Example:
qcom,cam-cdm-intf {
compatible = "qcom,cam-cdm-intf";
label = "cam-cdm-intf";
num-hw-cdm = <1>;
cdm-client-names = "vfe",
"jpeg-dma",
"jpeg",
"fd";
};
=======================
Required Node Structure
=======================
CDM HW node provides interface for camera clients through
to CDM interface node.
- cell-index
Usage: required
Value type: <u32>
Definition: Node instance number.
- compatible
Usage: required
Value type: <string>
Definition: Should be "qcom,cam480-cpas-cdm0", "qcom,cam480-cpas-cdm1"
"qcom,cam170-cpas-cdm0" or "qcom,cam480-cpas-cdm2".
- label
Usage: required
Value type: <string>
Definition: Should be "cpas-cdm".
- reg-names
Usage: required
Value type: <string>
Definition: Name of the register resources.
- reg
Usage: required
Value type: <u32>
Definition: Register values.
- reg-cam-base
Usage: required
Value type: <u32>
Definition: Offset of the register space compared to
to Camera base register space.
- interrupt-names
Usage: optional
Value type: <string>
Definition: Name of the interrupt.
- interrupts
Usage: optional
Value type: <u32>
Definition: Interrupt associated with CDM HW.
- regulator-names
Usage: required
Value type: <string>
Definition: Name of the regulator resources for CDM HW.
- camss-supply
Usage: required
Value type: <phandle>
Definition: Regulator reference corresponding to the names listed
in "regulator-names".
- clock-names
Usage: required
Value type: <string>
Definition: List of clock names required for CDM HW.
- clocks
Usage: required
Value type: <phandle>
Definition: List of clocks used for CDM HW.
- clock-rates
Usage: required
Value type: <u32>
Definition: List of clocks rates.
- cdm-client-names
Usage: required
Value type: <string>
Definition: List of Clients supported by CDM HW node.
- clock-cntl-level
Usage: required
Value type: <string>
Definition: List of strings corresponds clock-rates levels.
Supported strings: minsvs, lowsvs, svs, svs_l1, nominal, turbo.
Example:
qcom,cpas-cdm0@ac48000 {
cell-index = <0>;
compatible = "qcom,cam480-cpas-cdm0";
label = "cpas-cdm0";
reg = <0xac48000 0x1000>;
reg-names = "cpas-cdm";
interrupts = <0 461 0>;
interrupt-names = "cpas-cdm";
regulator-names = "camss";
camss-supply = <&titan_top_gdsc>;
clock-names = "soc_ahb_clk",
"titan_top_ahb_clk",
"cam_axi_clk",
"camcc_slow_ahb_clk_src",
"cpas_top_ahb_clk",
"camnoc_axi_clk";
clocks = <&clock_camcc CAM_CC_SOC_AHB_CLK>,
<&clock_gcc GCC_CAMERA_AHB_CLK>,
<&clock_gcc GCC_CAMERA_AXI_CLK>,
<&clock_camcc CAM_CC_SLOW_AHB_CLK_SRC>,
<&clock_camcc CAM_CC_CPAS_AHB_CLK>,
<&clock_camcc CAM_CC_CAMNOC_AXI_CLK>;
qcom,clock-rates = <0 80000000 80000000 80000000 80000000 80000000>;
cdm-client-names = "ife";
clock-cntl-level = "turbo";
status = "ok";
};
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