Re: [PATCH 4/4] gpio: ptxpmb-ext-cpld: Document bindings of PTXPMB extended CPLD
From: Rob Herring <robh@kernel.org>
Date: 2016-10-10 20:19:41
Also in:
linux-gpio, linux-i2c, linux-watchdog, lkml, netdev
On Fri, Oct 07, 2016 at 06:19:34PM +0300, Pantelis Antoniou wrote:
quoted hunk ↗ jump to hunk
From: Georgi Vlaev <redacted> Add device tree bindings document for the GPIO driver of Juniper's PTXPMB extended CPLD. Signed-off-by: Georgi Vlaev <redacted> [Ported from Juniper kernel] Signed-off-by: Pantelis Antoniou <redacted> --- .../bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txtdiff --git a/Documentation/devicetree/bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt b/Documentation/devicetree/bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt new file mode 100644 index 0000000..87f01b9 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/jnx,gpio-ptxpmb-ext-cpld.txt@@ -0,0 +1,36 @@ +Juniper PTXPMB extended CPLD GPIO block + +Required properties: + +- compatible: + Must be "jnx,gpio-ptxpmb-ext-cpld"
Generally, '-gpio' would be last.
+ +- #gpio-cells: + Should be <2>. The first cell is the pin number (within the controller's + pin space), and the second is used for the following flags: + bit[0]: direction (0 = out, 1 = in) + bit[1]: init high + bit[2]: active low
Same comment as all the other gpio bindings...
+ +- gpio-controller: + Specifies that the node is a GPIO controller. + +- interrupt-controller: + Specifies that the node is an interrupt controller. + +Optional properties: + +- reg: + Address and length of the register set for the device. Usually supplied + by the parent MFD device.
Make it required.
+
+
+Example:
+
+gpio_ext_cpld: cpld-ext-gpio {
+ compatible = "jnx,gpio-ptxpmb-ext-cpld";
+ #gpio-cells = <2>;
+ #interrupt-cells = <2>;
+ gpio-controller;
+ interrupt-controller;
+};
--
1.9.1