On 01/04/2017 06:33 AM, Rob Herring wrote:
On Tue, Jan 03, 2017 at 04:55:32PM -0800, David Daney wrote:
From: David Daney <david.daney@xxxxxxxxxx>
Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
---
.../devicetree/bindings/gpio/gpio-thunderx.txt | 33 ++++++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt b/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
new file mode 100644
index 0000000..ba3cdae
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
@@ -0,0 +1,33 @@
+Cavium ThunderX/OCTEON-TX GPIO controller bindings
+
+Required Properties:
+- reg: The controller bus address.
+- gpio-controller: Marks the device node as a GPIO controller.
+- #gpio-cells: Must be 2.
+ - First cell is the GPIO pin number relative to the controller.
+ - Second cell is standard of_gpio_flags:
+ 1 - Active Low.
+ 2 - Single Ended.
Just reference where these are defined.
Thanks for the review. This and the two changes below have been
addressed in v2 of the patch set.
David.
+
+Optional Properties:
+- compatible: "cavium,thunder-8890-gpio", unused as PCI driver binding is used.
+- interrupt-controller: Marks the device node as an interrupt controller.
+- #interrupt-cells: Must be present and have value of 2 if
+ "interrupt-controller" is present.
+ - First cell is the GPIO pin number relative to the controller.
+ - Second cell is triggering flags, one of:
+ 1 - Edge Rising
+ 2 - Edge Falling
+ 4 - Level High
+ 8 - Level Low
Just reference interrupt-controller/interrupts.txt or the header
defining these.
+
+Example:
+
+gpio_6_0: gpio0@6,0 {
gpio@6,0
+ compatible = "cavium,thunder-8890-gpio";
+ reg = <0x3000 0 0 0 0>; /* DEVFN = 0x30 (6:0) */
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+};
--
1.8.3.1
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