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sc16is7xx: spi interface documentation
Updated the documentation for spi interface.
Signed-off-by: Rama Kiran Kumar Indrakanti <indrakanti_ram@hotmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
authored by
Rama Kiran Kumar Indrakanti
and committed by
Greg Kroah-Hartman
8f4a9120
2c837a8a
+37
+37
Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
+37
Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
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* NXP SC16IS7xx advanced Universal Asynchronous Receiver-Transmitter (UART)
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* i2c as bus
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Required properties:
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- compatible: Should be one of the following:
···
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gpio-controller;
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#gpio-cells = <2>;
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};
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* spi as bus
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Required properties:
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- compatible: Should be one of the following:
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- "nxp,sc16is740" for NXP SC16IS740,
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- "nxp,sc16is741" for NXP SC16IS741,
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- "nxp,sc16is750" for NXP SC16IS750,
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- "nxp,sc16is752" for NXP SC16IS752,
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- "nxp,sc16is760" for NXP SC16IS760,
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- "nxp,sc16is762" for NXP SC16IS762.
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- reg: SPI chip select number.
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- interrupt-parent: The phandle for the interrupt controller that
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services interrupts for this IC.
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- interrupts: Specifies the interrupt source of the parent interrupt
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controller. The format of the interrupt specifier depends on the
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parent interrupt controller.
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- clocks: phandle to the IC source clock.
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Optional properties:
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- gpio-controller: Marks the device node as a GPIO controller.
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- #gpio-cells: Should be two. The first cell is the GPIO number and
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the second cell is used to specify the GPIO polarity:
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0 = active high,
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1 = active low.
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Example:
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sc16is750: sc16is750@0 {
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compatible = "nxp,sc16is750";
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reg = <0>;
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clocks = <&clk20m>;
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interrupt-parent = <&gpio3>;
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interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
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gpio-controller;
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#gpio-cells = <2>;
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};