From 9aedcc61ed101b4dbb7fa7013deca4a7ed7ff418 Mon Sep 17 00:00:00 2001 From: Phil Reid Date: Wed, 25 Jan 2017 09:31:07 +0800 Subject: [PATCH] dt: bindings: i2c-mux-pca954x: Add documentation for interrupt controller Various muxes can aggregate multiple irq lines and provide a control register to determine the active line. Add bindings for interrupt controller support. Acked-by: Rob Herring Signed-off-by: Phil Reid Signed-off-by: Peter Rosin --- .../devicetree/bindings/i2c/i2c-mux-pca954x.txt | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt index cf53d5fba20a..aa097045a10e 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt @@ -19,7 +19,14 @@ Optional Properties: - i2c-mux-idle-disconnect: Boolean; if defined, forces mux to disconnect all children in idle state. This is necessary for example, if there are several multiplexers on the bus and the devices behind them use same I2C addresses. - + - interrupt-parent: Phandle for the interrupt controller that services + interrupts for this device. + - interrupts: Interrupt mapping for IRQ. + - interrupt-controller: Marks the device node as an interrupt controller. + - #interrupt-cells : Should be two. + - first cell is the pin number + - second cell is used to specify flags. + See also Documentation/devicetree/bindings/interrupt-controller/interrupts.txt Example: @@ -29,6 +36,11 @@ Example: #size-cells = <0>; reg = <0x74>; + interrupt-parent = <&ipic>; + interrupts = <17 IRQ_TYPE_LEVEL_LOW>; + interrupt-controller; + #interrupt-cells = <2>; + i2c@2 { #address-cells = <1>; #size-cells = <0>; -- 2.20.1