From 0f6d785c847eeff55ae19546f5885156394be569 Mon Sep 17 00:00:00 2001 From: Damien Riegel Date: Mon, 21 Dec 2015 15:11:22 -0500 Subject: irqchip/ts4800: Add documentation for TS-4800 interrupt controller This is an interrupt-controller implemented in an FPGA, to multiplex interrupts generated from other IPs. The FPGA usually uses a GPIO as a parent interrupt controller to notify that one of the multiplexed interrupts has triggered. Signed-off-by: Damien Riegel Acked-by: Rob Herring Cc: Jason Cooper Cc: Marc Zyngier Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala Cc: kernel@savoirfairelinux.com Link: http://lkml.kernel.org/r/1450728683-31416-1-git-send-email-damien.riegel@savoirfairelinux.com Signed-off-by: Thomas Gleixner --- .../bindings/interrupt-controller/technologic,ts4800.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/technologic,ts4800.txt (limited to 'Documentation/devicetree/bindings/interrupt-controller/technologic,ts4800.txt') diff --git a/Documentation/devicetree/bindings/interrupt-controller/technologic,ts4800.txt b/Documentation/devicetree/bindings/interrupt-controller/technologic,ts4800.txt new file mode 100644 index 000000000000..7f15f1b0325b --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/technologic,ts4800.txt @@ -0,0 +1,16 @@ +TS-4800 FPGA interrupt controller + +TS-4800 FPGA has an internal interrupt controller. When one of the +interrupts is triggered, the SoC is notified, usually using a GPIO as +parent interrupt source. + +Required properties: +- compatible: should be "technologic,ts4800-irqc" +- interrupt-controller: identifies the node as an interrupt controller +- reg: physical base address of the controller and length of memory mapped + region +- #interrupt-cells: specifies the number of cells needed to encode an interrupt + source, should be 1. +- interrupt-parent: phandle to the parent interrupt controller this one is + cascaded from +- interrupts: specifies the interrupt line in the interrupt-parent controller -- cgit v1.2.3-59-g8ed1b