Commit 40acc052 authored by Vadym Kochan's avatar Vadym Kochan Committed by David S. Miller
Browse files

dt-bindings: marvell,prestera: Add description for device-tree bindings 



Add brief description how to configure base mac address binding in
device-tree.

Describe requirement for the PCI port which is connected to the ASIC, to
allow access to the firmware related registers.

Signed-off-by: default avatarVadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e1189d9a

Documentation/devicetree/bindings/net/marvell,prestera.txt

+34 −0
Original line number Diff line number Diff line
@@ -45,3 +45,37 @@ dfx-server { 
	ranges = <0 MBUS_ID(0x08, 0x00) 0 0x100000>;

	reg = <MBUS_ID(0x08, 0x00) 0 0x100000>;

};



Marvell Prestera SwitchDev bindings

-----------------------------------

Optional properties:

- compatible: must be "marvell,prestera"

- base-mac-provider: describes handle to node which provides base mac address,

	might be a static base mac address or nvme cell provider.



Example:



eeprom_mac_addr: eeprom-mac-addr {

       compatible = "eeprom,mac-addr-cell";

       status = "okay";



       nvmem = <&eeprom_at24>;

};



prestera {

       compatible = "marvell,prestera";

       status = "okay";



       base-mac-provider = <&eeprom_mac_addr>;

};



The current implementation of Prestera Switchdev PCI interface driver requires

that BAR2 is assigned to 0xf6000000 as base address from the PCI IO range:



&cp0_pcie0 {

	ranges = <0x81000000 0x0 0xfb000000 0x0 0xfb000000 0x0 0xf0000

		0x82000000 0x0 0xf6000000 0x0 0xf6000000 0x0 0x2000000

		0x82000000 0x0 0xf9000000 0x0 0xf9000000 0x0 0x100000>;

	phys = <&cp0_comphy0 0>;

	status = "okay";

};