[PATCH net-next v2 1/2] dt-bindings: net: altr,socfpga-stmmac: Add altr,socfpga-stmmac-agilex5-tsn compatible

[muhammad . nazim . amirul . nazle . asmade]

From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@xxxxxxxxxx>

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.

The TSN port uses the same DWXGMAC-2.10 core as the plain Agilex5 port,
so extend the interrupt/interrupt-names/dma-coherent conditional to
match the new compatible as well; otherwise a TSN node would incorrectly
fall into the single-interrupt, non-coherent else branch.

Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@xxxxxxxxxx>
---
Previously patch 3 of the v6 board series; split out for net-next.

v2: Extend the interrupt/interrupt-names/dma-coherent allOf conditional to
    match altr,socfpga-stmmac-agilex5-tsn, per Jakub Kicinski / netdev bot.
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     | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
index ce1bd5f2c470..a6ffd7b98c1d 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:
@@ -178,7 +181,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: altr,socfpga-stmmac-agilex5
+            enum:
+              - altr,socfpga-stmmac-agilex5
+              - altr,socfpga-stmmac-agilex5-tsn
     then:
       properties:
         interrupts:
-- 
2.43.7