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net: phy: mdio-bcm-unimac: Allow configuring MDIO clock divider

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Allow the configuration of the MDIO clock divider when the Device Tree
contains 'clock-frequency' property (similar to I2C and SPI buses).
Because the hardware may have lost its state during suspend/resume,
re-apply the MDIO clock divider upon resumption.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2018-09-20 17:05:40 -07:00
committed by David S. Miller
parent 94e7c84499
commit b78ac6ecd1
2 changed files with 84 additions and 2 deletions
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3
Documentation/devicetree/bindings/net/brcm,unimac-mdio.txt
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@@ -19,6 +19,9 @@ Optional properties:
- interrupt-names: must be "mdio_done_error" when there is a share interrupt fed
to this hardware block, or must be "mdio_done" for the first interrupt and
"mdio_error" for the second when there are separate interrupts
- clocks: A reference to the clock supplying the MDIO bus controller
- clock-frequency: the MDIO bus clock that must be output by the MDIO bus
hardware, if absent, the default hardware values are used
Child nodes of this MDIO bus controller node are standard Ethernet PHY device
nodes as described in Documentation/devicetree/bindings/net/phy.txt