[v2,1/2] dt-bindings: gpio: Add Spreadtrum GPIO controller documentation

Message ID 2834309f69a1ec37b84a33f153a3d0b90336bcc6.1517453568.git.baolin.wang@linaro.org
State New
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  • [v2,1/2] dt-bindings: gpio: Add Spreadtrum GPIO controller documentation
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Commit Message

Baolin Wang Feb. 1, 2018, 3:04 a.m.
This patch adds the device tree bindings for the Spreadtrum
GPIO controller. The gpios will be supported by the GPIO
generic library.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
Changes since v1:
 - No updates.
---
 .../devicetree/bindings/gpio/gpio-sprd.txt         |   28 ++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-sprd.txt

Comments

Rob Herring Feb. 5, 2018, 6:09 a.m. | #1
On Thu, Feb 01, 2018 at 11:04:31AM +0800, Baolin Wang wrote:
> This patch adds the device tree bindings for the Spreadtrum
> GPIO controller. The gpios will be supported by the GPIO
> generic library.
> 
> Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
> ---
> Changes since v1:
>  - No updates.
> ---
>  .../devicetree/bindings/gpio/gpio-sprd.txt         |   28 ++++++++++++++++++++
>  1 file changed, 28 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/gpio/gpio-sprd.txt

Reviewed-by: Rob Herring <robh@kernel.org>

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Patch

diff --git a/Documentation/devicetree/bindings/gpio/gpio-sprd.txt b/Documentation/devicetree/bindings/gpio/gpio-sprd.txt
new file mode 100644
index 0000000..eca97d4
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-sprd.txt
@@ -0,0 +1,28 @@ 
+Spreadtrum GPIO controller bindings
+
+The controller's registers are organized as sets of sixteen 16-bit
+registers with each set controlling a bank of up to 16 pins. A single
+interrupt is shared for all of the banks handled by the controller.
+
+Required properties:
+- compatible: Should be "sprd,sc9860-gpio".
+- reg: Define the base and range of the I/O address space containing
+the GPIO controller registers.
+- gpio-controller: Marks the device node as a GPIO controller.
+- #gpio-cells: Should be <2>. The first cell is the gpio number and
+the second cell is used to specify optional parameters.
+- interrupt-controller: Marks the device node as an interrupt controller.
+- #interrupt-cells: Should be <2>. Specifies the number of cells needed
+to encode interrupt source.
+- interrupts: Should be the port interrupt shared by all the gpios.
+
+Example:
+	ap_gpio: gpio@40280000 {
+		compatible = "sprd,sc9860-gpio";
+		reg = <0 0x40280000 0 0x1000>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
+	};