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authorAndrew Lunn <andrew@lunn.ch>2015-11-20 03:56:23 +0100
committerDavid S. Miller <davem@davemloft.net>2015-11-23 11:53:10 -0500
commitcc30c16344fc3a25153175c7eb9037b2136cd466 (patch)
tree47beff192fa89bd934323581f5cc9fed18052a0a /Documentation
parent3f8c0f7efb4fcac11f31afa97584d06118c614bb (diff)
downloadlinux-cc30c16344fc3a25153175c7eb9037b2136cd466.tar.bz2
net: dsa: Add support for a switch reset gpio
Some boards have a gpio line tied to the switch reset pin. Allow this gpio to be retrieved from the device tree, and take the switch out of reset before performing the probe. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/net/dsa/dsa.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.txt b/Documentation/devicetree/bindings/net/dsa/dsa.txt
index 04e6bef3ac3f..5fdbbcdf8c4b 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.txt
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.txt
@@ -31,6 +31,8 @@ A switch child node has the following optional property:
switch. Must be set if the switch can not detect
the presence and/or size of a connected EEPROM,
otherwise optional.
+- reset-gpios : phandle and specifier to a gpio line connected to
+ reset pin of the switch chip.
A switch may have multiple "port" children nodes
@@ -114,6 +116,7 @@ Example:
#size-cells = <0>;
reg = <17 1>; /* MDIO address 17, switch 1 in tree */
mii-bus = <&mii_bus1>;
+ reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
switch1port0: port@0 {
reg = <0>;