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UniPhier clock controller


System clock
------------

Required properties:
- compatible: should be one of the following:
    "socionext,uniphier-sld3-clock" - for sLD3 SoC.
    "socionext,uniphier-ld4-clock"  - for LD4 SoC.
    "socionext,uniphier-pro4-clock" - for Pro4 SoC.
    "socionext,uniphier-sld8-clock" - for sLD8 SoC.
    "socionext,uniphier-pro5-clock" - for Pro5 SoC.
    "socionext,uniphier-pxs2-clock" - for PXs2/LD6b SoC.
    "socionext,uniphier-ld11-clock" - for LD11 SoC.
    "socionext,uniphier-ld20-clock" - for LD20 SoC.
- #clock-cells: should be 1.

Example:

	sysctrl@61840000 {
		compatible = "socionext,uniphier-sysctrl",
			     "simple-mfd", "syscon";
		reg = <0x61840000 0x4000>;

		clock {
			compatible = "socionext,uniphier-ld20-clock";
			#clock-cells = <1>;
		};

		other nodes ...
	};

Provided clocks:

 8: ST DMAC
12: GIO (Giga bit stream I/O)
14: USB3 ch0 host
15: USB3 ch1 host
16: USB3 ch0 PHY0
17: USB3 ch0 PHY1
20: USB3 ch1 PHY0
21: USB3 ch1 PHY1


Media I/O (MIO) clock
---------------------

Required properties:
- compatible: should be one of the following:
    "socionext,uniphier-sld3-mio-clock" - for sLD3 SoC.
    "socionext,uniphier-ld4-mio-clock"  - for LD4 SoC.
    "socionext,uniphier-pro4-mio-clock" - for Pro4 SoC.
    "socionext,uniphier-sld8-mio-clock" - for sLD8 SoC.
    "socionext,uniphier-pro5-mio-clock" - for Pro5 SoC.
    "socionext,uniphier-pxs2-mio-clock" - for PXs2/LD6b SoC.
    "socionext,uniphier-ld11-mio-clock" - for LD11 SoC.
    "socionext,uniphier-ld20-mio-clock" - for LD20 SoC.
- #clock-cells: should be 1.

Example:

	mioctrl@59810000 {
		compatible = "socionext,uniphier-mioctrl",
			     "simple-mfd", "syscon";
		reg = <0x59810000 0x800>;

		clock {
			compatible = "socionext,uniphier-ld20-mio-clock";
			#clock-cells = <1>;
		};

		other nodes ...
	};

Provided clocks:

 0: SD ch0 host
 1: eMMC host
 2: SD ch1 host
 7: MIO DMAC
 8: USB2 ch0 host
 9: USB2 ch1 host
10: USB2 ch2 host
11: USB2 ch3 host
12: USB2 ch0 PHY
13: USB2 ch1 PHY
14: USB2 ch2 PHY
15: USB2 ch3 PHY


Peripheral clock
----------------

Required properties:
- compatible: should be one of the following:
    "socionext,uniphier-sld3-peri-clock" - for sLD3 SoC.
    "socionext,uniphier-ld4-peri-clock"  - for LD4 SoC.
    "socionext,uniphier-pro4-peri-clock" - for Pro4 SoC.
    "socionext,uniphier-sld8-peri-clock" - for sLD8 SoC.
    "socionext,uniphier-pro5-peri-clock" - for Pro5 SoC.
    "socionext,uniphier-pxs2-peri-clock" - for PXs2/LD6b SoC.
    "socionext,uniphier-ld11-peri-clock" - for LD11 SoC.
    "socionext,uniphier-ld20-peri-clock" - for LD20 SoC.
- #clock-cells: should be 1.

Example:

	perictrl@59820000 {
		compatible = "socionext,uniphier-perictrl",
			     "simple-mfd", "syscon";
		reg = <0x59820000 0x200>;

		clock {
			compatible = "socionext,uniphier-ld20-peri-clock";
			#clock-cells = <1>;
		};

		other nodes ...
	};

Provided clocks:

 0: UART ch0
 1: UART ch1
 2: UART ch2
 3: UART ch3
 4: I2C ch0
 5: I2C ch1
 6: I2C ch2
 7: I2C ch3
 8: I2C ch4
 9: I2C ch5
10: I2C ch6