devicetree: macb: Document clock properties

The macb driver uses the clock bindings. Document the required
properties, especially the driver specific clock-names.

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Rob Herring <robh@kernel.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/net/macb.txt b/Documentation/devicetree/bindings/net/macb.txt
index 4ff65047bb9a..70af2ec12b09 100644
--- a/Documentation/devicetree/bindings/net/macb.txt
+++ b/Documentation/devicetree/bindings/net/macb.txt
@@ -10,6 +10,10 @@ Required properties:
 - interrupts: Should contain macb interrupt
 - phy-mode: String, operation mode of the PHY interface.
   Supported values are: "mii", "rmii", "gmii", "rgmii".
+- clock-names: Tuple listing input clock names.
+        Required elements: 'pclk', 'hclk'
+        Optional elements: 'tx_clk'
+- clocks: Phandles to input clocks.
 
 Optional properties:
 - local-mac-address: 6 bytes, mac address
@@ -22,4 +26,6 @@ Examples:
                 interrupts = <21>;
                 phy-mode = "rmii";
                 local-mac-address = [3a 0e 03 04 05 06];
+                clock-names = "pclk", "hclk", "tx_clk";
+                clocks = <&clkc 30>, <&clkc 30>, <&clkc 13>;
         };