From b1d9d6cb30fe6bd1b844ae98a372471f17c4fdc4 Mon Sep 17 00:00:00 2001 From: Peng Hao Date: Tue, 6 Nov 2018 22:57:15 +0800 Subject: dt-bindings: misc/pvpanic: add document for pvpanic-mmio Add dt-bindings document for "qemu:pvpanic-mmio". Acked-by: Mark Rutland Signed-off-by: Peng Hao Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/misc/pvpanic-mmio.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/pvpanic-mmio.txt (limited to 'Documentation/devicetree/bindings/misc') diff --git a/Documentation/devicetree/bindings/misc/pvpanic-mmio.txt b/Documentation/devicetree/bindings/misc/pvpanic-mmio.txt new file mode 100644 index 000000000000..985e90736780 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/pvpanic-mmio.txt @@ -0,0 +1,29 @@ +* QEMU PVPANIC MMIO Configuration bindings + +QEMU's emulation / virtualization targets provide the following PVPANIC +MMIO Configuration interface on the "virt" machine. +type: + +- a read-write, 16-bit wide data register. + +QEMU exposes the data register to guests as memory mapped registers. + +Required properties: + +- compatible: "qemu,pvpanic-mmio". +- reg: the MMIO region used by the device. + * Bytes 0x0 Write panic event to the reg when guest OS panics. + * Bytes 0x1 Reserved. + +Example: + +/ { + #size-cells = <0x2>; + #address-cells = <0x2>; + + pvpanic-mmio@9060000 { + compatible = "qemu,pvpanic-mmio"; + reg = <0x0 0x9060000 0x0 0x2>; + }; +}; + -- cgit v1.2.3