* Qualcomm Technologies, Inc. MSM Camera JPEG

The MSM camera JPEG devices are implemented multiple device nodes.
The root JPEG device node has properties defined to hint the driver
about the number of Encoder and DMA nodes available during the
probe sequence. Each node has multiple properties defined
for interrupts, clocks and regulators.

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

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

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

- num-jpeg-enc
  Usage: required
  Value type: <u32>
  Definition: Number of supported Encoder HW blocks.

- num-jpeg-dma
  Usage: required
  Value type: <u32>
  Definition: Number of supported DMA HW blocks.

Example:
	qcom,cam-jpeg {
		compatible = "qcom,cam-jpeg";
		compat-hw-name = "qcom,jpegenc",
			"qcom,jpegdma";
		num-jpeg-enc = <1>;
		num-jpeg-dma = <1>;
		status = "ok";
	};


=======================
Required Node Structure
=======================
Encoder/DMA Nodes provide interface for JPEG driver about
the device register map, interrupt map, clocks and regulators.

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

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

- 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: 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 JPEG HW.

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

- camss-vdd-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 JPEG HW.

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

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

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

- 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.

Examples:
	cam_jpeg_enc: qcom,jpegenc@ac4e000 {
		cell-index = <0>;
		compatible = "qcom,cam_jpeg_enc";
		reg-names = "jpege_hw";
		reg = <0xac4e000 0x4000>;
		reg-cam-base = <0x4e000>;
		interrupt-names = "jpeg";
		interrupts = <0 474 0>;
		regulator-names = "camss-vdd";
		camss-vdd-supply = <&titan_top_gdsc>;
		clock-names = "camera_ahb",
			"camera_axi",
			"soc_ahb_clk",
			"cpas_ahb_clk",
			"camnoc_axi_clk",
			"jpegenc_clk_src",
			"jpegenc_clk";
		clocks = <&clock_gcc GCC_CAMERA_AHB_CLK>,
			<&clock_gcc GCC_CAMERA_AXI_CLK>,
			<&clock_camcc CAM_CC_SOC_AHB_CLK>,
			<&clock_camcc CAM_CC_CPAS_AHB_CLK>,
			<&clock_camcc CAM_CC_CAMNOC_AXI_CLK>,
			<&clock_camcc CAM_CC_JPEG_CLK_SRC>,
			<&clock_camcc CAM_CC_JPEG_CLK>;

		clock-rates = <0 0 0 0 0 600000000 0>;
		src-clock-name = "jpegenc_clk_src";
		clock-cntl-level = "nominal";
		status = "ok";
	};

	cam_jpeg_dma: qcom,jpegdma@0xac52000{
		cell-index = <0>;
		compatible = "qcom,cam_jpeg_dma";
		reg-names = "jpegdma_hw";
		reg = <0xac52000 0x4000>;
		reg-cam-base = <0x52000>;
		interrupt-names = "jpegdma";
		interrupts = <0 475 0>;
		regulator-names = "camss-vdd";
		camss-vdd-supply = <&titan_top_gdsc>;
		clock-names = "camera_ahb",
			"camera_axi",
			"soc_ahb_clk",
			"cpas_ahb_clk",
			"camnoc_axi_clk",
			"jpegdma_clk_src",
			"jpegdma_clk";
		clocks = <&clock_gcc GCC_CAMERA_AHB_CLK>,
			<&clock_gcc GCC_CAMERA_AXI_CLK>,
			<&clock_camcc CAM_CC_SOC_AHB_CLK>,
			<&clock_camcc CAM_CC_CPAS_AHB_CLK>,
			<&clock_camcc CAM_CC_CAMNOC_AXI_CLK>,
			<&clock_camcc CAM_CC_JPEG_CLK_SRC>,
			<&clock_camcc CAM_CC_JPEG_CLK>;

		clock-rates = <0 0 0 0 0 600000000 0>;
		src-clock-name = "jpegdma_clk_src";
		clock-cntl-level = "nominal";
		status = "ok";
	};