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This series of uart controllers is able to work in IrDA mode. This adds a property to the device tree to enable that feature on selected ports if needed. Signed-off-by: Pascal Huerst <pascal.huerst@gmail.com> Signed-off-by: Daniel Mack <daniel@zonque.org> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200529055058.1606910-2-daniel@zonque.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
72 lines
2.4 KiB
Text
72 lines
2.4 KiB
Text
* 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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- "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: I2C address of the SC16IS7xx device.
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- interrupts: Should contain the UART interrupt
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- clocks: Reference to the IC source clock.
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OR (when there is no clock provider visible to the platform)
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- clock-frequency: The source clock frequency for the IC.
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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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- irda-mode-ports: An array that lists the indices of the port that
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should operate in IrDA mode.
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Example:
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sc16is750: sc16is750@51 {
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compatible = "nxp,sc16is750";
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reg = <0x51>;
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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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};
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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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- 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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- irda-mode-ports: An array that lists the indices of the port that
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should operate in IrDA mode.
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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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};
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