Update description for X-Gene standby GPIO controller DTS binding to
support GPIO line configuration as input, output or external IRQ pin.
Signed-off-by: Y Vo <y...@apm.com>
---
.../devicetree/bindings/gpio/gpio-xgene-sb.txt | 23 +++++++++++++-------
1 files changed, 15 insertions(+), 8 deletions(-)
diff --git a/Documentation/devicetree/bindings/gpio/gpio-xgene-sb.txt
b/Documentation/devicetree/bindings/gpio/gpio-xgene-sb.txt
index dae1300..7c0e7f4 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-xgene-sb.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-xgene-sb.txt
@@ -3,8 +3,7 @@ APM X-Gene Standby GPIO controller bindings
This is a gpio controller in the standby domain.
There are 20 GPIO pins from 0..21. There is no GPIO_DS14 or GPIO_DS15,
-only GPIO_DS8..GPIO_DS13 support interrupts. The IRQ mapping
-is currently 1-to-1 on interrupts 0x28 thru 0x2d.
+only GPIO_DS8..GPIO_DS13 support interrupts.
Required properties:
- compatible: "apm,xgene-gpio-sb" for the X-Gene Standby GPIO controller
@@ -16,6 +15,11 @@ Required properties:
1 = active low
- gpio-controller: Marks the device node as a GPIO controller.
- interrupts: Shall contain exactly 6 interrupts.
+- interrupt-parent: Phandle of the parent interrupt controller.
+- interrupt-cells: Shoule be two.
+ - first cell is 0-5 coresponding for GPIO pin 8..13.
+ - second cell is used to specify flags.
+- interrupt-controller: Marks the device node as an interrupt controller.
Example:
sbgpio: sbgpio@17001000 {
@@ -23,10 +27,13 @@ Example:
reg = <0x0 0x17001000 0x0 0x400>;
#gpio-cells = <2>;
gpio-controller;
- interrupts = <0x0 0x28 0x1>,
- <0x0 0x29 0x1>,
- <0x0 0x2a 0x1>,
- <0x0 0x2b 0x1>,
- <0x0 0x2c 0x1>,
- <0x0 0x2d 0x1>;
+ interrupt-parent = <&gic>;
+ interrupts = <0x0 0x28 0x4>,
+ <0x0 0x29 0x4>,
+ <0x0 0x2a 0x4>,
+ <0x0 0x2b 0x4>,
+ <0x0 0x2c 0x4>,
+ <0x0 0x2d 0x4>;
+ #interrupt-cells = <2>;
+ interrupt-controller;
};
--
1.7.1
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