[PATCH net-next 1/2] dt-bindings: net: altr,socfpga-stmmac: Add altr,socfpga-stmmac-agilex5-tsn compatible
From: muhammad.nazim.amirul.nazle.asmade@altera.com
Date: 2026-09-23 02:18:51
Also in:
linux-devicetree, lkml, netdev
Subsystem:
arm/socfpga dwmac glue layer, networking drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Maxime Chevallier, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
The Agilex5 SoCDK TSN Config2 gmac1 path includes an FPGA soft-IP
GMII-to-RGMII converter between the DWXGMAC and the PHY. The converter
provides the RGMII TX/RX delays and presents GMII toward the MAC, unlike
a plain altr,socfpga-stmmac-agilex5 port with no such converter.
Add altr,socfpga-stmmac-agilex5-tsn for that integration in the same
compatible items entry as altr,socfpga-stmmac-agilex5 (shared
snps,dwxgmac-2.10). Do not use altr,socfpga-stmmac-agilex5 as a DT
fallback for the TSN port; the converter presents GMII to the MAC and
supplies the RGMII delays, unlike a plain Agilex5 GMAC port.
Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
---
Previously patch 3 of the v6 board series; split out for net-next.
Rebase only.
v6: Put altr,socfpga-stmmac-agilex5-tsn in the same enum as
altr,socfpga-stmmac-agilex5, per Krzysztof Kozlowski.
v5: Drop altr,socfpga-stmmac-agilex5 fallback and rewrite commit message
to explain hardware incompatibility, per Krzysztof Kozlowski.
.../devicetree/bindings/net/altr,socfpga-stmmac.yaml | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
index d8f90d36d246..ca768937d890 100644
--- a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
+++ b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml@@ -22,6 +22,7 @@ select: - altr,socfpga-stmmac - altr,socfpga-stmmac-a10-s10 - altr,socfpga-stmmac-agilex5 + - altr,socfpga-stmmac-agilex5-tsn required: - compatible
@@ -42,7 +43,9 @@ properties: - const: snps,dwmac-3.74a - const: snps,dwmac - items: - - const: altr,socfpga-stmmac-agilex5 + - enum: + - altr,socfpga-stmmac-agilex5 + - altr,socfpga-stmmac-agilex5-tsn - const: snps,dwxgmac-2.10 clocks:
--
2.43.7