diff mbox

[v8,1/3] gpio: dt-bindings: add wd,mbl-gpio bindings

Message ID 9bc9349d6e13d81c6200b0cd8fa20c76263043f6.1462543458.git.chunkeey@googlemail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Christian Lamparter May 8, 2016, 1:08 p.m. UTC 
This patch adds the device tree bindings for the Western Digital's
MyBook Live memory-mapped GPIO controllers.

The gpios will be supported by gpio-mmio code of the
GPIO generic library.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---
 .../devicetree/bindings/gpio/wd,mbl-gpio.txt       | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt

Comments

Linus Walleij May 10, 2016, 11:58 a.m. UTC | #1 
On Sun, May 8, 2016 at 3:08 PM, Christian Lamparter
<chunkeey@googlemail.com> wrote:

> This patch adds the device tree bindings for the Western Digital's
> MyBook Live memory-mapped GPIO controllers.
>
> The gpios will be supported by gpio-mmio code of the
> GPIO generic library.
>
> Acked-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>

Looks OK to me and Rob has ACKed so patch applied.

Yours,
Linus Walleij
diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt b/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt
new file mode 100644
index 0000000..038c3a6
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/wd,mbl-gpio.txt
@@ -0,0 +1,38 @@ 
+Bindings for the Western Digital's MyBook Live memory-mapped GPIO controllers.
+
+The Western Digital MyBook Live has two memory-mapped GPIO controllers.
+Both GPIO controller only have a single 8-bit data register, where GPIO
+state can be read and/or written.
+
+Required properties:
+	- compatible: should be "wd,mbl-gpio"
+	- reg-names: must contain
+		"dat" - data register
+	- reg: address + size pairs describing the GPIO register sets;
+		order must correspond with the order of entries in reg-names
+	- #gpio-cells: must be set to 2. The first cell is the pin number and
+			the second cell is used to specify the gpio polarity:
+			0 = active high
+			1 = active low
+	- gpio-controller: Marks the device node as a gpio controller.
+
+Optional properties:
+	- no-output: GPIOs are read-only.
+
+Examples:
+	gpio0: gpio0@e0000000 {
+		compatible = "wd,mbl-gpio";
+		reg-names = "dat";
+		reg = <0xe0000000 0x1>;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+
+	gpio1: gpio1@e0100000 {
+		compatible = "wd,mbl-gpio";
+		reg-names = "dat";
+		reg = <0xe0100000 0x1>;
+		#gpio-cells = <2>;
+		gpio-controller;
+		no-output;
+	};