Commit c3a8e1ed authored by Johan Hovold's avatar Johan Hovold Committed by David S. Miller

dt/bindings: add clock-select function property to micrel phy binding

Add "micrel,rmii-reference-clock-select-25-mhz" to Micrel ethernet PHY
binding documentation.

This property is needed to properly describe some revisions of Micrel
PHYs which has the function of this configuration bit inverted so that
setting it enables 25 MHz rather than 50 MHz clock mode.

Note that a clock reference ("rmii-ref") is still needed to actually
select either mode.

Cc: devicetree@vger.kernel.org
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Acked-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6d013294
...@@ -19,6 +19,17 @@ Optional properties: ...@@ -19,6 +19,17 @@ Optional properties:
See the respective PHY datasheet for the mode values. See the respective PHY datasheet for the mode values.
- micrel,rmii-reference-clock-select-25-mhz: RMII Reference Clock Select
bit selects 25 MHz mode
Setting the RMII Reference Clock Select bit enables 25 MHz rather
than 50 MHz clock mode.
Note that this option in only needed for certain PHY revisions with a
non-standard, inverted function of this configuration bit.
Specifically, a clock reference ("rmii-ref" below) is always needed to
actually select a mode.
- clocks, clock-names: contains clocks according to the common clock bindings. - clocks, clock-names: contains clocks according to the common clock bindings.
supported clocks: supported clocks:
......
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