diff options
| author |   Heiko Stübner <heiko@sntech.de> | 2014-04-25 10:06:13 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-04-27 19:46:17 -0400 |
| commit | 88154c96ee2dab84ae78ad41562b4a3a23d83788 (patch) | |
| tree | 8b5892907536e3d31a325ce0587e3e1a6e416535 /Documentation | |
| parent | arc_emac: fix probe error path (diff) | |
| download | linux-dev-88154c96ee2dab84ae78ad41562b4a3a23d83788.tar.xz linux-dev-88154c96ee2dab84ae78ad41562b4a3a23d83788.zip | |
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')
| -rw-r--r-- | Documentation/devicetree/bindings/net/arc_emac.txt | 12 |
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 7fbb027218a1..a1d71eb43b20 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>; |