Re: [PATCH 3/5] dt-bindings: net: sun8i-emac: Add A100 EMAC compatible
From: Andre Przywara <andre.przywara@arm.com>
Date: 2025-07-04 22:42:10
Also in:
linux-arm-kernel, linux-devicetree, linux-gpio, linux-sunxi, lkml
On Thu, 26 Jun 2025 10:09:21 +0200 Paul Kocialkowski [off-list ref] wrote: Hi,
The Allwinner A100/A133 has an Ethernet MAC (EMAC) controller that is compatible with the A64 one. It features the same syscon registers for control of the top-level integration of the unit.
As mentioned, the A133 has two Ethernet MACs on its die. Both look compatible to the A64, but EMAC1 uses a separate syscon register (@+0x34), so needs a separate compatible string for that one. We don't seem to have an example of any board (or even SoC package) that uses the 2nd EMAC, but I suggest to not slam the door on that possibility, and use a name suffixed by "0": allwinner,sun50i-a100-emac0. There is precedence for that in the H616 case. Otherwise I can confirm that the EMAC is indeed compatible to the A64, so with that fixed: Reviewed-by: Andre Przywara <andre.przywara@arm.com> Cheers, Andre
quoted hunk ↗ jump to hunk
Signed-off-by: Paul Kocialkowski <paulk@sys-base.io> --- .../devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml | 1 + 1 file changed, 1 insertion(+)diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml index 7b6a2fde8175..0ae415f1e69c 100644 --- a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml +++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml@@ -21,6 +21,7 @@ properties: - items: - enum: - allwinner,sun20i-d1-emac + - allwinner,sun50i-a100-emac - allwinner,sun50i-h6-emac - allwinner,sun50i-h616-emac0 - allwinner,sun55i-a523-emac0