Documentation/devicetree: document cavium-pip rx-delay/tx-delay properties
Document cavium-pip rx-delay/tx-delay properties. Currently the board
specific values need to be hardcoded in the platform code, which we
want to avoid when moving to DT-only booting.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/net/cavium-pip.txt b/Documentation/devicetree/bindings/net/cavium-pip.txt
index 7dbd158..e3b8fe71 100644
--- a/Documentation/devicetree/bindings/net/cavium-pip.txt
+++ b/Documentation/devicetree/bindings/net/cavium-pip.txt
@@ -37,6 +37,12 @@
- phy-handle: Optional, see ethernet.txt file in the same directory.
+- rx-delay: Delay value for RGMII receive clock. Optional. Disabled if 0.
+ Value range is 1-31, and mapping to the actual delay varies depending on HW.
+
+- tx-delay: Delay value for RGMII transmit clock. Optional. Disabled if 0.
+ Value range is 1-31, and mapping to the actual delay varies depending on HW.
+
Example:
pip@11800a0000000 {