[media] of: smiapp: Add documentation

SMIA/SMIA++ sensor

SMIA (Standard Mobile Imaging Architecture) is an image sensor standard

defined jointly by Nokia and ST. SMIA++, defined by Nokia, is an extension

of that. These definitions are valid for both types of sensors.

More detailed documentation can be found in

Documentation/devicetree/bindings/media/video-interfaces.txt .

Mandatory properties

--------------------

- compatible: "nokia,smia"

- reg: I2C address (0x10, or an alternative address)

- vana-supply: Analogue voltage supply (VANA), typically 2,8 volts (sensor

  dependent).

- clocks: External clock to the sensor

- clock-frequency: Frequency of the external clock to the sensor

- link-frequencies: List of allowed data link frequencies. An array of

  64-bit elements.

Optional properties

-------------------

- nokia,nvm-size: The size of the NVM, in bytes. If the size is not given,

  the NVM contents will not be read.

- reset-gpios: XSHUTDOWN GPIO

Endpoint node mandatory properties

----------------------------------

- clock-lanes: <0>

- data-lanes: <1..n>

- remote-endpoint: A phandle to the bus receiver's endpoint node.

Example

-------

&i2c2 {

	clock-frequency = <400000>;

	smiapp_1: camera@10 {

		compatible = "nokia,smia";

		reg = <0x10>;

		reset-gpios = <&gpio3 20 0>;

		vana-supply = <&vaux3>;

		clocks = <&omap3_isp 0>;

		clock-frequency = <9600000>;

		nokia,nvm-size = <512>; /* 8 * 64 */

		link-frequencies = /bits/ 64 <199200000 210000000 499200000>;

		port {

			smiapp_1_1: endpoint {

				clock-lanes = <0>;

				data-lanes = <1 2>;

				remote-endpoint = <&csi2a_ep>;

			};

		};

	};

};

F:	drivers/media/i2c/smiapp-pll.c

F:	drivers/media/i2c/smiapp-pll.h

F:	include/uapi/linux/smiapp.h

F:	Documentation/devicetree/bindings/media/i2c/nokia,smia.txt

SMM665 HARDWARE MONITOR DRIVER

M:	Guenter Roeck <linux@roeck-us.net>