[PATCH v2] Documentation/devicetree: document cavium-pip rx-delay/tx-delay properties

[Aaro Koskinen <aaro.koskinen-X3B1VOXEql0@public.gmane.org>]

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-X3B1VOXEql0@public.gmane.org>
---

	v2: Update the description.

	v1: http://marc.info/?l=devicetree&m=146507906104224&w=2

 Documentation/devicetree/bindings/net/cavium-pip.txt | 6 ++++++
 1 file changed, 6 insertions(+)

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 @@ Properties for PIP port which is a child the PIP interface:
 
 - 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 {
-- 
2.7.2

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