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[net-next,v9,6/6] dt-bindings: marvell,prestera: Add description for device-tree bindings

Message ID 20200916163102.3408-7-vadym.kochan@plvision.eu
State Superseded
Headers show
Series [net-next,v9,1/6] net: marvell: prestera: Add driver for Prestera family ASIC devices | expand

Commit Message

Vadym Kochan Sept. 16, 2020, 4:31 p.m. UTC 
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: Vadym Kochan <vadym.kochan@plvision.eu>
---
 .../bindings/net/marvell,prestera.txt         | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/net/marvell,prestera.txt b/Documentation/devicetree/bindings/net/marvell,prestera.txt
index 83370ebf5b89..e28938ddfdf5 100644
--- a/Documentation/devicetree/bindings/net/marvell,prestera.txt
+++ b/Documentation/devicetree/bindings/net/marvell,prestera.txt
@@ -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";
+};