* [PATCH v2] gpio: pca953x: add required properties to example in bindings
@ 2018-01-21 12:38 Wolfram Sang
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From: Wolfram Sang @ 2018-01-21 12:38 UTC (permalink / raw)
To: linux-gpio; +Cc: linux-renesas-soc, Geert Uytterhoeven, Wolfram Sang
The binding documentation was missing two required properties in the
example. Fix it and add them also to the list of required properties.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
Changes since V1:
* reworded text about the second cell
Documentation/devicetree/bindings/gpio/gpio-pca953x.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
index 0d0158728f897b..9c60bfb2053c4c 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
@@ -30,6 +30,11 @@ Required properties:
onnn,pca9654
exar,xra1202
+- gpio-controller: Marks the device node as a GPIO controller
+- #gpio-cells: Must be 2. The first cell is the GPIO number and the second
+ cell specifies GPIO flags, as defined in <dt-bindings/gpio/gpio.h>. Note
+ that not all flags may be supported by the hardware or the driver.
+
Optional properties:
- reset-gpios: GPIO specification for the RESET input. This is an
active low signal to the PCA953x.
@@ -44,4 +49,6 @@ Example:
pinctrl-0 = <&pinctrl_pca9505>;
interrupt-parent = <&gpio3>;
interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
+ gpio-controller;
+ #gpio-cells = <2>;
};
--
2.11.0
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