[PATCH net-next v1 1/3] dt-bindings: net: micrel: add coma-mode-gpios property

From: Michael Walle
Date: Wed Apr 27 2022 - 17:44:26 EST


The LAN8814 has a coma mode pin which is used to put the PHY into
isolate and power-down mode. Usually strapped to be asserted by default.
A GPIO is then used to take the PHY out of this mode.

Signed-off-by: Michael Walle <michael@xxxxxxxx>
---
Documentation/devicetree/bindings/net/micrel.txt | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/micrel.txt b/Documentation/devicetree/bindings/net/micrel.txt
index 8d157f0295a5..a9ed691ffb03 100644
--- a/Documentation/devicetree/bindings/net/micrel.txt
+++ b/Documentation/devicetree/bindings/net/micrel.txt
@@ -45,3 +45,12 @@ Optional properties:

In fiber mode, auto-negotiation is disabled and the PHY can only work in
100base-fx (full and half duplex) modes.
+
+ - coma-mode-gpios: If present the given gpio will be deasserted when the
+ PHY is probed.
+
+ Some PHYs have a COMA mode input pin which puts the PHY into
+ isolate and power-down mode. On some boards this input is connected
+ to a GPIO of the SoC.
+
+ Supported on the LAN8814.
--
2.30.2