lkml.org 
[lkml]   [2018]   [Feb]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 1/2] dt-bindings: gpio: Add Spreadtrum GPIO controller documentation
Date
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>
Acked-by: Rob Herring <robh@kernel.org>
---
Changes since v3:
- Add acked tag from Rob.

Changes since v2:
- No updates.

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

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>;
+ };
--
1.7.9.5
\
 
 \ /
  Last update: 2018-02-23 05:45    [W:0.042 / U:1.508 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site