[PATCH v2 3/6] dt-bindings: brcmstb-gpio: document properties for wakeup
From: Gregory Fong <hidden>
Date: 2015-05-29 02:16:01
Also in:
linux-devicetree, linux-gpio, lkml
Subsystem:
gpio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Some brcmstb GPIO controllers can be used to wake from suspend, so use the de facto standard property 'wakeup-source' to mark the nodes of controllers with that capability. Also document interrupts-extended, which will be used for wakeup handling because the interrupt parent for the wake IRQ is different from the regular IRQ. Signed-off-by: Gregory Fong <redacted> --- New in v2. .../devicetree/bindings/gpio/brcm,brcmstb-gpio.txt | 26 +++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.txt b/Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.txt
index 435f1bc..568814f 100644
--- a/Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.txt
+++ b/Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.txt@@ -33,6 +33,12 @@ Optional properties: - interrupt-parent: phandle of the parent interrupt controller +- interrupts-extended: + Alternate form of specifying interrupts and parents that allows for + multiple parents. This takes precedence over 'interrupts' and + 'interrupt-parent'. This probably must be used if the wakeup-source + property is provided because that may have a different interrupt parent. + - #interrupt-cells: Should be <2>. The first cell is the GPIO number, the second should specify flags. The following subset of flags is supported:
@@ -48,7 +54,10 @@ Optional properties: Marks the device node as an interrupt controller - interrupt-names: - The name of the IRQ resource used by this controller + The names of the IRQ resources used by this controller + +- wakeup-source: + GPIOs for this controller can be used as a wakeup source Example: upg_gio: gpio at f040a700 {
@@ -63,3 +72,18 @@ Example: interrupt-names = "upg_gio"; brcm,gpio-bank-widths = <0x20 0x20 0x20 0x18>; }; + + upg_gio_aon: gpio at f04172c0 { + #gpio-cells = <0x2>; + #interrupt-cells = <0x2>; + compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio"; + gpio-controller; + interrupt-controller; + reg = <0xf04172c0 0x40>; + interrupt-parent = <0xc>; + interrupts = <0x6>; + interrupts-extended = <0xc 0x6 0xa 0x5>; + interrupt-names = "upg_gio_aon", "upg_gio_aon_wakeup"; + wakeup-source; + brcm,gpio-bank-widths = <0x12 0x4>; + };
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1.9.1