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| author | Linus Walleij <linus.walleij@linaro.org> | 2013-10-04 15:15:35 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-01-03 22:26:13 +0100 |
| commit | bdd272cbb97a66cf83061d22cfd19beb7267943a (patch) | |
| tree | b43334bc0f1b3f76404c4841088a25bc44cd1d28 /Documentation | |
| parent | fe989145447341bff1ed68bd8aaee12ea860d461 (diff) | |
| download | linux-bdd272cbb97a66cf83061d22cfd19beb7267943a.tar.gz linux-bdd272cbb97a66cf83061d22cfd19beb7267943a.tar.bz2 linux-bdd272cbb97a66cf83061d22cfd19beb7267943a.zip | |
irqchip: versatile FPGA: support cascaded interrupts from DT
The Versatile FPGA interrupt controller supports cascading interrupts,
i.e. that its output is connected to the input of another interrupt
controller. This makes it possible to pass a parent interrupt from
the device tree and print it in the boot log if applicable.
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/versatile-fpga-irq.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/versatile-fpga-irq.txt b/Documentation/devicetree/bindings/arm/versatile-fpga-irq.txt index 9989eda755d9..c9cf605bb995 100644 --- a/Documentation/devicetree/bindings/arm/versatile-fpga-irq.txt +++ b/Documentation/devicetree/bindings/arm/versatile-fpga-irq.txt @@ -29,3 +29,8 @@ pic: pic@14000000 { clear-mask = <0xffffffff>; valid-mask = <0x003fffff>; }; + +Optional properties: +- interrupts: if the FPGA IRQ controller is cascaded, i.e. if its IRQ + output is simply connected to the input of another IRQ controller, + then the parent IRQ shall be specified in this property. |