* Qualcomm Technologies, Inc. MSM Camera OPE

The ope device node has properties defined to hint the driver
about the number of OPE nodes available during the
probe sequence. Each node has multiple properties defined
for interrupts, clocks and regulators.

=======================
Required Node Structure
=======================
OPE root interface node takes care of the handling account for number
of OPE devices present on the hardware.

- compatible
  Usage: required
  Value type: <string>
  Definition: Should be "qcom,cam-ope".

- compat-hw-name
  Usage: required
  Value type: <string>
  Definition: Should be "qcom,ope".

- num-ope
  Usage: required
  Value type: <u32>
  Definition: Number of supported OPE HW blocks.

Example:
	qcom,cam-ope {
		compatible = "qcom,cam-ope";
		compat-hw-name = "qcom,ope";
		num-ope = <2>;
		status = "ok";
	};

=======================
Required Node Structure
=======================
OPE Node provides interface for Image Control Processor driver
about the OPE register map, interrupt map, clocks, regulators.

- cell-index
  Usage: required
  Value type: <u32>
  Definition: Node instance number.

- compatible
  Usage: required
  Value type: <string>
  Definition: Should be "qcom,ope".

- reg-names
  Usage: optional
  Value type: <string>
  Definition: Name of the register resources.

- reg
  Usage: optional
  Value type: <u32>
  Definition: Register values.

- reg-cam-base
  Usage: optional
  Value type: <u32>
  Definition: Register values.

- interrupt-names
  Usage: optional
  Value type: <string>
  Definition: Name of the interrupt.

- interrupts
  Usage: optional
  Value type: <u32>
  Definition: Interrupt associated with OPE HW.

- regulator-names
  Usage: required
  Value type: <string>
  Definition: Name of the regulator resources for OPE 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.

- src-clock-name
  Usage: required
  Value type: <string>
  Definition: Source clock name.

- clock-control-debugfs
  Usage: optional
  Value type: <string>
  Definition: Enable/Disable clk rate control.

- clocks
  Usage: required
  Value type: <phandle>
  Definition: List of clocks used for CDM HW.

- clock-cntl-level
  Usage: required
  Value type: <string>
  Definition: List of strings corresponds clock-rates levels.
  Supported strings: lowsvs, svs, svs_l1, nominal, turbo.

- clock-rates
  Usage: required
  Value type: <u32>
  Definition: List of clocks rates.

Examples:
qcom,cam-ope {
	compatible = "qcom,cam-ope";
	compat-hw-name = "qcom,ope";
	num-ope = <1>;
	status = "ok";
};

ope: qcom,ope@ac00000 {
	cell-index = <0>;
	compatible = "qcom,ope";
	reg =
		<0x42000 0x400>,
		<0x42400 0x200>,
		<0x42600 0x200>,
		<0x42800 0x4400>,
		<0x46c00 0x190>,
		<0x46d90 0x1270>;
	reg-names =
		"ope_cdm",
		"ope_top",
		"ope_qos",
		"ope_pp",
		"ope_bus_rd",
		"ope_bus_wr";
	reg-cam-base = <0x42000 0x42400 0x42600 0x42800 0x46c00 0x46d90>;
	interrupts = <GIC_SPI 463 IRQ_TYPE_EDGE_RISING>;
	interrupt-names = "ope";
	regulator-names = "camss-vdd";
	camss-vdd-supply = <&gcc_camss_top_gdsc>;
	clock-names =
		"ope_ahb_clk_src",
		"ope_ahb_clk",
		"ope_clk_src",
		"ope_clk";
	clocks =
		<&gcc GCC_CAMSS_OPE_AHB_CLK_SRC>,
		<&gcc GCC_CAMSS_OPE_AHB_CLK>,
		<&gcc GCC_CAMSS_OPE_CLK_SRC>,
		<&gcc GCC_CAMSS_OPE_CLK>;

	clock-rates =
		<200000000 0 480000000 0>,
		<400000000 0 600000000 0>;

	clock-cntl-level = "svs", "turbo";
	src-clock-name = "ope_clk_src";
	status = "ok";
};