From dddfd098523953b65706fb3647cb33a8fbb6d904 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 15 Jun 2017 20:49:21 +0200 Subject: dt-bindings: mfd: Add retu/tahvo ASIC chips bindings There are Device Tree source files defining a device node for the retu/tahvo I2C chip, but there isn't a DT binding document for it. Signed-off-by: Javier Martinez Canillas Acked-by: Rob Herring Acked-by: Aaro Koskinen Acked-by: Tony Lindgren Signed-off-by: Lee Jones --- Documentation/devicetree/bindings/mfd/retu.txt | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/retu.txt (limited to 'Documentation/devicetree/bindings/mfd') diff --git a/Documentation/devicetree/bindings/mfd/retu.txt b/Documentation/devicetree/bindings/mfd/retu.txt new file mode 100644 index 000000000000..876242394a16 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/retu.txt @@ -0,0 +1,25 @@ +* Device tree bindings for Nokia Retu and Tahvo multi-function device + +Retu and Tahvo are a multi-function devices found on Nokia Internet +Tablets (770, N800 and N810). The Retu chip provides watchdog timer +and power button control functionalities while Tahvo chip provides +USB transceiver functionality. + +Required properties: +- compatible: "nokia,retu" or "nokia,tahvo" +- reg: Specifies the CBUS slave address of the ASIC chip +- interrupts: The interrupt line the device is connected to +- interrupt-parent: The parent interrupt controller + +Example: + +cbus0 { + compatible = "i2c-cbus-gpio"; + ... + retu: retu@1 { + compatible = "nokia,retu"; + interrupt-parent = <&gpio4>; + interrupts = <12 IRQ_TYPE_EDGE_RISING>; + reg = <0x1>; + }; +}; -- cgit