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authorMartin Blumenstingl <martin.blumenstingl@googlemail.com>2020-05-13 00:10:56 +0300
committerDavid S. Miller <davem@davemloft.net>2020-05-13 22:23:13 +0300
commit7af4c8451d80d0a8622483c27ab141a7c1a94573 (patch)
treec669e2183143892294312c044e0fbc6e84a54ee2 /Documentation
parent6cd35888a0db4b18a5796fe5d5863f004f8eef0f (diff)
downloadlinux-7af4c8451d80d0a8622483c27ab141a7c1a94573.tar.xz
dt-bindings: net: meson-dwmac: Add the amlogic,rx-delay-ns property
The PRG_ETHERNET registers on Meson8b and newer SoCs can add an RX delay. Add a property with the known supported values so it can be configured according to the board layout. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/net/amlogic,meson-dwmac.yaml13
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/amlogic,meson-dwmac.yaml b/Documentation/devicetree/bindings/net/amlogic,meson-dwmac.yaml
index ae91aa9d8616..66074314e57a 100644
--- a/Documentation/devicetree/bindings/net/amlogic,meson-dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/amlogic,meson-dwmac.yaml
@@ -67,6 +67,19 @@ allOf:
PHY and MAC are adding a delay).
Any configuration is ignored when the phy-mode is set to "rmii".
+ amlogic,rx-delay-ns:
+ enum:
+ - 0
+ - 2
+ default: 0
+ description:
+ The internal RGMII RX clock delay (provided by this IP block) in
+ nanoseconds. When phy-mode is set to "rgmii" then the RX delay
+ should be explicitly configured. When the phy-mode is set to
+ either "rgmii-id" or "rgmii-rxid" the RX clock delay is already
+ provided by the PHY. Any configuration is ignored when the
+ phy-mode is set to "rmii".
+
properties:
compatible:
additionalItems: true