[PATCH RFC v2 01/11] dt-bindings: net: meson-dwmac: Add the amlogic,rx-delay-ns property

Martin Blumenstingl
2020-04-29T20:17:16Z

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.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
.../bindings/net/amlogic,meson-dwmac.yaml | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/amlogic,meson-dwmac.yaml b/Documentation/devicetree/bindings/net/amlogic,meson-dwmac.yaml
index ae91aa9d8616..8d851f59d9f2 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:
+ $ref: /schemas/types.yaml#definitions/uint32
+ enum:
+ - 0
+ - 2
+ 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 not configured a fallback of
+ 0ns is used. 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
--
2.26.2