path: root/Documentation/devicetree/bindings/net
diff options
authorHeiko Stübner <heiko@sntech.de>2014-04-25 08:06:13 (GMT)
committerDavid S. Miller <davem@davemloft.net>2014-04-27 23:46:17 (GMT)
commit88154c96ee2dab84ae78ad41562b4a3a23d83788 (patch)
tree8b5892907536e3d31a325ce0587e3e1a6e416535 /Documentation/devicetree/bindings/net
parent796bec1efbbd3be98d84cd68279c6ec03a4782f9 (diff)
arc_emac: add clock handling
This adds ability for the arc_emac to really handle its supplying clock. To get the needed clock-frequency either a real clock or the previous clock-frequency property must be provided. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Max Schwarz <max.schwarz@online.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/devicetree/bindings/net')
1 files changed, 10 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/net/arc_emac.txt b/Documentation/devicetree/bindings/net/arc_emac.txt
index 7fbb027..a1d71eb 100644
--- a/Documentation/devicetree/bindings/net/arc_emac.txt
+++ b/Documentation/devicetree/bindings/net/arc_emac.txt
@@ -4,11 +4,15 @@ Required properties:
- compatible: Should be "snps,arc-emac"
- reg: Address and length of the register set for the device
- interrupts: Should contain the EMAC interrupts
-- clock-frequency: CPU frequency. It is needed to calculate and set polling
-period of EMAC.
- max-speed: see ethernet.txt file in the same directory.
- phy: see ethernet.txt file in the same directory.
+Clock handling:
+The clock frequency is needed to calculate and set polling period of EMAC.
+It must be provided by one of:
+- clock-frequency: CPU frequency.
+- clocks: reference to the clock supplying the EMAC.
Child nodes of the driver are the individual PHY devices connected to the
MDIO bus. They must have a "reg" property given the PHY address on the MDIO bus.
@@ -19,7 +23,11 @@ Examples:
reg = <0xc0fc2000 0x3c>;
interrupts = <6>;
mac-address = [ 00 11 22 33 44 55 ];
clock-frequency = <80000000>;
+ /* or */
+ clocks = <&emac_clock>;
max-speed = <100>;
phy = <&phy0>;

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