mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 11:21:33 +00:00
77501a79ce
We can't detect the FXEN (fiber mode) bootstrap pin, so configure it via a boolean device tree property "micrel,fiber-mode". If it is enabled, auto-negotiation is not supported. The only available modes are 100base-fx (full duplex and half duplex). Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
48 lines
1.7 KiB
Plaintext
48 lines
1.7 KiB
Plaintext
Micrel PHY properties.
|
|
|
|
These properties cover the base properties Micrel PHYs.
|
|
|
|
Optional properties:
|
|
|
|
- micrel,led-mode : LED mode value to set for PHYs with configurable LEDs.
|
|
|
|
Configure the LED mode with single value. The list of PHYs and the
|
|
bits that are currently supported:
|
|
|
|
KSZ8001: register 0x1e, bits 15..14
|
|
KSZ8041: register 0x1e, bits 15..14
|
|
KSZ8021: register 0x1f, bits 5..4
|
|
KSZ8031: register 0x1f, bits 5..4
|
|
KSZ8051: register 0x1f, bits 5..4
|
|
KSZ8081: register 0x1f, bits 5..4
|
|
KSZ8091: register 0x1f, bits 5..4
|
|
|
|
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.
|
|
|
|
supported clocks:
|
|
- KSZ8021, KSZ8031, KSZ8081, KSZ8091: "rmii-ref": The RMII reference
|
|
input clock. Used to determine the XI input clock.
|
|
|
|
- micrel,fiber-mode: If present the PHY is configured to operate in fiber mode
|
|
|
|
Some PHYs, such as the KSZ8041FTL variant, support fiber mode, enabled
|
|
by the FXEN boot strapping pin. It can't be determined from the PHY
|
|
registers whether the PHY is in fiber mode, so this boolean device tree
|
|
property can be used to describe it.
|
|
|
|
In fiber mode, auto-negotiation is disabled and the PHY can only work in
|
|
100base-fx (full and half duplex) modes.
|