From 22936c3e6e8cdd9641fdf1362dc9369dd35246c8 Mon Sep 17 00:00:00 2001 From: Brandon Streiff Date: Mon, 5 Mar 2018 16:05:22 -0600 Subject: [PATCH] dt-bindings: net: dsa: marvell: describe compatibility string There are two compatibility strings for mv88e6xxx, but it isn't clear from the documentation why only those two exist when the mv88e6xxx driver supports more than the 6085 and 6190. Briefly describe how the compatible property is used, and provide guidance on which to use. The model list comes from looking at port_base_addr values (0x0 vs 0x10) in drivers/net/dsa/mv88e6xxx/chip.c. Signed-off-by: Brandon Streiff Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- Documentation/devicetree/bindings/net/dsa/marvell.txt | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/net/dsa/marvell.txt b/Documentation/devicetree/bindings/net/dsa/marvell.txt index 1d4d0f49c9d0..caf71e2fe24a 100644 --- a/Documentation/devicetree/bindings/net/dsa/marvell.txt +++ b/Documentation/devicetree/bindings/net/dsa/marvell.txt @@ -13,9 +13,18 @@ placed as a child node of an mdio device. The properties described here are those specific to Marvell devices. Additional required and optional properties can be found in dsa.txt. +The compatibility string is used only to find an identification register, +which is at a different MDIO base address in different switch families. +- "marvell,mv88e6085" : Switch has base address 0x10. Use with models: + 6085, 6095, 6097, 6123, 6131, 6141, 6161, 6165, + 6171, 6172, 6175, 6176, 6185, 6240, 6320, 6321, + 6341, 6350, 6351, 6352 +- "marvell,mv88e6190" : Switch has base address 0x00. Use with models: + 6190, 6190X, 6191, 6290, 6390, 6390X + Required properties: - compatible : Should be one of "marvell,mv88e6085" or - "marvell,mv88e6190" + "marvell,mv88e6190" as indicated above - reg : Address on the MII bus for the switch. Optional properties: -- GitLab