[PATCH v5 3/4] dt-bindings: net: altr,socfpga-stmmac: Add altr,socfpga-stmmac-agilex5-tsn compatible

From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>

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. It is not
listed as compatible with altr,socfpga-stmmac-agilex5 because 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-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>
---
v5: Drop altr,socfpga-stmmac-agilex5 fallback and rewrite commit message
    to explain hardware incompatibility, per Krzysztof Kozlowski.
v4: No changes from v2.

 .../devicetree/bindings/net/altr,socfpga-stmmac.yaml          | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
index 63084f762373..7db6a7102994 100644
--- a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
+++ b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
@@ -24,6 +24,7 @@ select:
           - altr,socfpga-stmmac
           - altr,socfpga-stmmac-a10-s10
           - altr,socfpga-stmmac-agilex5
+          - altr,socfpga-stmmac-agilex5-tsn
 
   required:
     - compatible
@@ -46,6 +47,9 @@ properties:
       - items:
           - const: altr,socfpga-stmmac-agilex5
           - const: snps,dwxgmac-2.10
+      - items:
+          - const: altr,socfpga-stmmac-agilex5-tsn
+          - const: snps,dwxgmac-2.10
 
   clocks:
     minItems: 1
-- 
2.43.7