A couple of optional properties have been introduced for Aquantia PHY
allowing the driver to set up wiring related configuration points that
are otherwise driven by firmware.
Signed-off-by: Alex Marginean <alexandru.margin...@nxp.com>
---
doc/device-tree-bindings/net/aquantia-phy.txt | 25 +++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 doc/device-tree-bindings/net/aquantia-phy.txt
diff --git a/doc/device-tree-bindings/net/aquantia-phy.txt
b/doc/device-tree-bindings/net/aquantia-phy.txt
new file mode 100644
index 0000000000..89ce61e05b
--- /dev/null
+++ b/doc/device-tree-bindings/net/aquantia-phy.txt
@@ -0,0 +1,25 @@
+PHY nodes for Aquantia devices.
+
+This text describes properties that are applicable to Aquantia PHY nodes in
+addition to the bindings in phy.txt.
+
+Aquantia PHYs allow some flexibility in the way they are wired in a system,
+they allow MDI pins to be reversed, LEDs linked up in different weays, have an
+I2C slave interface that can be used for debug. Normally the configuration
+corresponding to these is driven by the PHY firmware with the downside that
+a custom firmware is needed for each integration of a PHY.
+Several optional bindings are defined that allow these configuration points to
+be driven by the PHY driver and reduce dependency on specific FW versions.
+
+Optional properties:
+mdi-reversal: 0 or 1 indicating that reversal must be disabled/enabled.
+ Firmware default is used if the property is missing.
+smb-addr: I2C/SMBus address to use, firmware default is used if the
property
+ is missing.
+
+Example node:
+phy@00 {
+ reg = <0x00>;
+ mdi-reversal = <1>;
+ smb-addr = <0x25>;
+};
--
2.17.1
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