diff options
author | Sascha Hauer <s.hauer@pengutronix.de> | 2014-04-25 11:22:32 +0200 |
---|---|---|
committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-04-28 09:08:46 +0200 |
commit | 00ce25c6dcdae5582ae4be37147ab33678adc995 (patch) | |
tree | 41c93102ae304a61738c31353e3cb5336ef0b297 /dts/Bindings/gpio/mrvl-gpio.txt | |
parent | 0af79fbb6779921d3f1962773adb7fb57d3c89d4 (diff) | |
download | barebox-00ce25c6dcdae5582ae4be37147ab33678adc995.tar.gz barebox-00ce25c6dcdae5582ae4be37147ab33678adc995.tar.xz |
Add devicetree source files as of Linux-3.15-rc2
This adds the Linux dts files to barebox. The dts files are
generated from Ian Campbells device-tree-rebasing.git:
git://xenbits.xen.org/people/ianc/device-tree-rebasing.git
The dts are found in dts/ in the barebox repository and
will be updated from upstream regularly, probably for each upstream
-rc.
To keep the synchronization with upstream easy no changes to
the original files are allowed under dts/. Instead changes to
upstream dts files will be done using overlays in arch/$ARCH/dts/.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/gpio/mrvl-gpio.txt')
-rw-r--r-- | dts/Bindings/gpio/mrvl-gpio.txt | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/dts/Bindings/gpio/mrvl-gpio.txt b/dts/Bindings/gpio/mrvl-gpio.txt new file mode 100644 index 0000000000..66416261e1 --- /dev/null +++ b/dts/Bindings/gpio/mrvl-gpio.txt @@ -0,0 +1,56 @@ +* Marvell PXA GPIO controller + +Required properties: +- compatible : Should be "intel,pxa25x-gpio", "intel,pxa26x-gpio", + "intel,pxa27x-gpio", "intel,pxa3xx-gpio", + "marvell,pxa93x-gpio", "marvell,mmp-gpio" or + "marvell,mmp2-gpio". +- reg : Address and length of the register set for the device +- interrupts : Should be the port interrupt shared by all gpio pins. + There're three gpio interrupts in arch-pxa, and they're gpio0, + gpio1 and gpio_mux. There're only one gpio interrupt in arch-mmp, + gpio_mux. +- interrupt-names : Should be the names of irq resources. Each interrupt + uses its own interrupt name, so there should be as many interrupt names + as referenced interrups. +- interrupt-controller : Identifies the node as an interrupt controller. +- #interrupt-cells: Specifies the number of cells needed to encode an + interrupt source. +- gpio-controller : Marks the device node as a gpio controller. +- #gpio-cells : Should be one. It is the pin number. + +Example: + + gpio: gpio@d4019000 { + compatible = "marvell,mmp-gpio"; + reg = <0xd4019000 0x1000>; + interrupts = <49>; + interrupt-names = "gpio_mux"; + gpio-controller; + #gpio-cells = <1>; + interrupt-controller; + #interrupt-cells = <1>; + }; + +* Marvell Orion GPIO Controller + +Required properties: +- compatible : Should be "marvell,orion-gpio" +- reg : Address and length of the register set for controller. +- gpio-controller : So we know this is a gpio controller. +- ngpio : How many gpios this controller has. +- interrupts : Up to 4 Interrupts for the controller. + +Optional properties: +- mask-offset : For SMP Orions, offset for Nth CPU + +Example: + + gpio0: gpio@10100 { + compatible = "marvell,orion-gpio"; + #gpio-cells = <2>; + gpio-controller; + reg = <0x10100 0x40>; + ngpio = <32>; + interrupts = <35>, <36>, <37>, <38>; + }; |