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

From: Krzysztof Kozlowski

Date: Mon Aug 17 2026 - 12:09:14 EST

On 17/08/2026 05:02, muhammad.nazim.amirul.nazle.asmade@xxxxxxxxxx wrote:
> 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. 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@xxxxxxxxxx>
> ---
> 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

So this should be part of enum of earlier list of
altr,socfpga-stmmac-agilex5.

Best regards,
Krzysztof