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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/net/brcm,unimac-mdio.txt
parentInitial commit. (diff)
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Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+* Broadcom UniMAC MDIO bus controller
+
+Required properties:
+- compatible: should one from "brcm,genet-mdio-v1", "brcm,genet-mdio-v2",
+ "brcm,genet-mdio-v3", "brcm,genet-mdio-v4", "brcm,genet-mdio-v5" or
+ "brcm,unimac-mdio"
+- reg: address and length of the register set for the device, first one is the
+ base register, and the second one is optional and for indirect accesses to
+ larger than 16-bits MDIO transactions
+- reg-names: name(s) of the register must be "mdio" and optional "mdio_indir_rw"
+- #size-cells: must be 1
+- #address-cells: must be 0
+
+Optional properties:
+- interrupts: must be one if the interrupt is shared with the Ethernet MAC or
+ Ethernet switch this MDIO block is integrated from, or must be two, if there
+ are two separate interrupts, first one must be "mdio done" and second must be
+ for "mdio error"
+- 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
+
+Example:
+
+mdio@403c0 {
+ compatible = "brcm,unimac-mdio";
+ reg = <0x403c0 0x8 0x40300 0x18>;
+ reg-names = "mdio", "mdio_indir_rw";
+ #size-cells = <1>;
+ #address-cells = <0>;
+
+ ...
+ phy@0 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <0>;
+ };
+};