From: Alexander Sverdlin <alexander.sverdlin@siemens.com>

Add new maxlinear,mii-slew-rate-slow boolean property. This property is
only applicable for ports in R(G)MII mode and allows for slew rate
reduction in comparison to "normal" default configuration with the purpose
to reduce radiated emissions.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
---
 Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml b/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml
index 205b683849a53..6cd5c6152c9e9 100644
--- a/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/lantiq,gswip.yaml
@@ -106,6 +106,11 @@ patternProperties:
         unevaluatedProperties: false
 
         properties:
+          maxlinear,mii-slew-rate-slow:
+            type: boolean
+            description:
+              Configure R(G)MII TXD/TXC pads' slew rate to "slow" instead
+              of "normal" to reduce radiated emissions.
           maxlinear,rmii-refclk-out:
             type: boolean
             description:
-- 
2.52.0