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Commit 8f4a9120 authored by Rama Kiran Kumar Indrakanti's avatar Rama Kiran Kumar Indrakanti Committed by Greg Kroah-Hartman
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sc16is7xx: spi interface documentation 



Updated the documentation for spi interface.

Signed-off-by: default avatarRama Kiran Kumar Indrakanti <indrakanti_ram@hotmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2c837a8a

Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt

+37 −0
Original line number Original line Diff line number Diff line 
* NXP SC16IS7xx advanced Universal Asynchronous Receiver-Transmitter (UART)

* NXP SC16IS7xx advanced Universal Asynchronous Receiver-Transmitter (UART)

* i2c as bus





Required properties:

Required properties:

- compatible: Should be one of the following:

- compatible: Should be one of the following:
@@ -31,3 +32,39 @@ Example: 
                gpio-controller;

                gpio-controller;

                #gpio-cells = <2>;

                #gpio-cells = <2>;

        };

        };



* spi as bus



Required properties:

- compatible: Should be one of the following:

  - "nxp,sc16is740" for NXP SC16IS740,

  - "nxp,sc16is741" for NXP SC16IS741,

  - "nxp,sc16is750" for NXP SC16IS750,

  - "nxp,sc16is752" for NXP SC16IS752,

  - "nxp,sc16is760" for NXP SC16IS760,

  - "nxp,sc16is762" for NXP SC16IS762.

- reg: SPI chip select number.

- interrupt-parent: The phandle for the interrupt controller that

  services interrupts for this IC.

- interrupts: Specifies the interrupt source of the parent interrupt

  controller. The format of the interrupt specifier depends on the

  parent interrupt controller.

- clocks: phandle to the IC source clock.



Optional properties:

- gpio-controller: Marks the device node as a GPIO controller.

- #gpio-cells: Should be two. The first cell is the GPIO number and

  the second cell is used to specify the GPIO polarity:

    0 = active high,

    1 = active low.



Example:

	sc16is750: sc16is750@0 {

		compatible = "nxp,sc16is750";

		reg = <0>;

		clocks = <&clk20m>;

		interrupt-parent = <&gpio3>;

		interrupts = <7 IRQ_TYPE_EDGE_FALLING>;

		gpio-controller;

		#gpio-cells = <2>;

	};