* Qualcomm Technologies, Inc. MSM Camera SFE

Camera SFE device provides the definitions for enabling
the SFE hardware. It also provides the functions for the client
to control the SFE hardware.

=======================
Required Node Structure
=======================
The SFE device is described in one level of the device node.

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First Level Node - CAM SFE device
======================================
Required properties:
- cell-index
  Usage: required
  Value type: <u32>
  Definition: Should specify the hardware index id.

- compatible
  Usage: required
  Value type: <string>
  Definition: Should specify the compatibility string for matching the

  driver. e.g. "qcom,sfe680".

- reg-names
  Usage: required
  Value type: <string>
  Definition: Should specify the name of the register block.

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

- reg-cam-base
  Usage: required
  Value type: <u32>
  Definition: List of bases.

- rt-wrapper-base
  Usage: required
  Value type: u32
  Definition: Titan offset of start of the RT Wrapper.

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

- interrupts
  Usage: Required
  Value type: <u32>
  Definition: Interrupt associated with SFE HW.

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

- xxxx-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 SFE HW.

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

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

- clock-cntl-level
  Usage: required
  Value type: <string>
  Definition: All different clock level node can support.

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

- scl-clk-names
  Usage: required
  Value type: <string>
  Definition: Source clock name for register write.

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

- vmrm-resource-ids
  Usage: optional
  Value type: <u32>
  Definition: should specify vmrm resource id list order is mem label,
  mem tag, irq1 label, irq2 label.

Example:
cam_sfe0: qcom,sfe0@ac9e000 {
	cell-index = <0>;
	compatible = "qcom,sfe680";
	reg-names = "sfe0";
	reg = <0xac9e000 0x8000>;
	reg-cam-base = <0x9e000>;
	rt-wrapper-base = <0x62000>;
	interrupt-names = "sfe";
	interrupts = <GIC_SPI 462 IRQ_TYPE_EDGE_RISING>;
	regulator-names = "camss", "sfe0";
	camss-supply = <&cam_cc_titan_top_gdsc>;
	sfe0-supply = <&cam_cc_sfe_0_gdsc>;
	clock-names =
		"sfe_0_ahb",
		"sfe_clk_src",
		"sfe_clk";
	clocks =
		<&clock_camcc CAM_CC_SFE_0_FAST_AHB_CLK>,
		<&clock_camcc CAM_CC_SFE_0_CLK_SRC>,
		<&clock_camcc CAM_CC_SFE_0_CLK>;
	clock-rates =
		<100000000 432000000 0>,
		<200000000 594000000 0>,
		<300000000 675000000 0>,
		<400000000 785000000 0>,
		<400000000 785000000 0>;
	clock-cntl-level = "lowsvs", "svs", "svs_l1", "nominal",
		"turbo";
	src-clock-name = "sfe_clk_src";
	scl-clk-names = "sfe_0_ahb";
	clock-control-debugfs = "true";
	vmrm-resource-ids = <16 16 16>;
	status = "ok";
};