@@ -3,12 +3,17 @@
Properties:
- compatible : Should be "fsl,etsec2" or "gianfar"
- - reg : Offset and length of the register set for the device
+ - reg : Offset and length of the register set for the device. If this is
+ missing, a subnode with a name prefix "queue-group" must be provided to
+ provide the <reg> property.
- phy-handle : See ethernet.txt file in the same directory.
- phy-connection-type : See ethernet.txt file in the same directory. This
property is only really needed if the connection is of type "rgmii-id",
"rgmii-rxid" and "rgmii-txid" as all other connection types are detected
by hardware.
+ - ranges : an <empty> value if subnode "queue-group" is present, specifying
+ that no address translation is required between them TSEC parent node and
+ the child "queue-group" node.
Example:
ethernet@24000 {
@@ -18,6 +23,18 @@ Example:
phy-connection-type = "sgmii";
};
+An alternate description with "queue-group" subnode example:
+ ethernet@24000 {
+ compatible = "fsl,etsec2";
+ phy-handle = <&phy0>;
+ phy-connection-type = "sgmii";
+ ranges;
+
+ queue-group {
+ reg = <0x24000 0x1000>;
+ };
+ };
+
Child nodes of the TSEC controller are typically the individual PHY devices
connected via the MDIO bus (sometimes the MDIO bus controller is separate).
At present the Freescale TSEC node DT bindings doc requires a <reg> property in the TSEC node. But this might not always be the case. In the upstream Linux kernel, there is no DT bindings doc for it but the kernel driver tests a subnode of a name prefixed with "queue-group", as we can see from gfar_of_init(): for_each_available_child_of_node(np, child) { if (!of_node_name_eq(child, "queue-group")) ... in drivers/net/ethernet/freescale/gianfar.c Update our DT bindings to describe this alternate description. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- Changes in v4: - describe "ranges" is required fo the alternate description Changes in v3: - add "ranges" in the alternate example doc/device-tree-bindings/net/fsl-tsec-phy.txt | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)