Add the reset binding documentation to the SoC binding documentation as
the reset driver in Marvell Berlin SoC is part of the chip/system
control registers. This patch adds the required properties to configure
the reset controller.

Signed-off-by: Antoine Tenart <antoine.ten...@free-electrons.com>
Acked-by: Philipp Zabel <p.za...@pengutronix.de>
---
 Documentation/devicetree/bindings/arm/marvell,berlin.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/marvell,berlin.txt 
b/Documentation/devicetree/bindings/arm/marvell,berlin.txt
index 904de5781f44..a99eb9eb14c0 100644
--- a/Documentation/devicetree/bindings/arm/marvell,berlin.txt
+++ b/Documentation/devicetree/bindings/arm/marvell,berlin.txt
@@ -106,11 +106,21 @@ Required subnode-properties:
 - groups: a list of strings describing the group names.
 - function: a string describing the function used to mux the groups.
 
+* Reset controller binding
+
+A reset controller is part of the chip control registers set. The chip control
+node also provides the reset. The register set is not at the same offset 
between
+Berlin SoCs.
+
+Required property:
+- #reset-cells: must be set to 2
+
 Example:
 
 chip: chip-control@ea0000 {
        compatible = "marvell,berlin2-chip-ctrl";
        #clock-cells = <1>;
+       #reset-cells = <2>;
        reg = <0xea0000 0x400>;
        clocks = <&refclk>, <&externaldev 0>;
        clock-names = "refclk", "video_ext0";
-- 
1.9.1

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