[PATCH v2 2/5] dt-bindings: gpio: rcar: Add gpio-reserved-ranges support

[Biju Das <biju.das@xxxxxxxxxxxxxx>]

Update the DT bindings documentation with the optional gpio-reserved-ranges
properties.

Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
Reviewed-by: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
index 378f132..67968b5 100644
--- a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
+++ b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
@@ -46,6 +46,9 @@ Optional properties:
     mandatory if the hardware implements a controllable functional clock for
     the GPIO instance.
 
+  - gpio-reserved-ranges: Set of tuples to specify the unused GPIOs.This
+    property indicates the start and size of the GPIOs that can't be used.
+
 Please refer to gpio.txt in this directory for details of gpio-ranges property
 and the common GPIO bindings used by client devices.
 
-- 
2.7.4

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