forked from Minki/linux
948350140e
Commitda47b45720("phy: add support for a reset-gpio specification") causes the following xtensa qemu crash according to Guenter Roeck: [ 9.366256] libphy: ethoc-mdio: probed [ 9.367389] (null): could not attach to PHY [ 9.368555] (null): failed to probe MDIO bus [ 9.371540] Unable to handle kernel paging request at virtual address 0000001c [ 9.371540] pc = d0320926, ra = 903209d1 [ 9.375358] Oops: sig: 11 [#1] This reverts commitda47b45720. Reported-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
46 lines
1.6 KiB
Plaintext
46 lines
1.6 KiB
Plaintext
PHY nodes
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Required properties:
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- interrupts : <a b> where a is the interrupt number and b is a
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field that represents an encoding of the sense and level
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information for the interrupt. This should be encoded based on
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the information in section 2) depending on the type of interrupt
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controller you have.
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- interrupt-parent : the phandle for the interrupt controller that
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services interrupts for this device.
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- reg : The ID number for the phy, usually a small integer
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Optional Properties:
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- compatible: Compatible list, may contain
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"ethernet-phy-ieee802.3-c22" or "ethernet-phy-ieee802.3-c45" for
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PHYs that implement IEEE802.3 clause 22 or IEEE802.3 clause 45
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specifications. If neither of these are specified, the default is to
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assume clause 22.
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If the phy's identifier is known then the list may contain an entry
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of the form: "ethernet-phy-idAAAA.BBBB" where
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AAAA - The value of the 16 bit Phy Identifier 1 register as
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4 hex digits. This is the chip vendor OUI bits 3:18
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BBBB - The value of the 16 bit Phy Identifier 2 register as
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4 hex digits. This is the chip vendor OUI bits 19:24,
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followed by 10 bits of a vendor specific ID.
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The compatible list should not contain other values than those
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listed here.
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- max-speed: Maximum PHY supported speed (10, 100, 1000...)
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- broken-turn-around: If set, indicates the PHY device does not correctly
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release the turn around line low at the end of a MDIO transaction.
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Example:
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ethernet-phy@0 {
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compatible = "ethernet-phy-id0141.0e90", "ethernet-phy-ieee802.3-c22";
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interrupt-parent = <40000>;
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interrupts = <35 1>;
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reg = <0>;
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};
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