[PATCH v2 0/4] Add Intel Agilex5 SoCDK TSN Config2 board

[PATCH v2 0/4] Add Intel Agilex5 SoCDK TSN Config2 board

[muhammad.nazim.amirul.nazle.asmade]

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

v2:
 - Replace mac-mode DT property with a board-specific compatible string
   "altr,socfpga-stmmac-agilex5-tsn" to identify gmac1 on the TSN Config2
   board, per Andrew Lunn's feedback.
 - Change phy-mode from "rgmii" to "rgmii-id" on both gmac1 and gmac2,
   since the FPGA GMII-to-RGMII converter provides the TX/RX clock delays
   (acting as MAC-side delays).
 - Add a new patch (3/4) documenting the new MAC compatible string in
   the altr,socfpga-stmmac binding.
 - Fix DTS Makefile indentation (Krzysztof Kozlowski).

---
This series adds DT binding, device tree, and driver support for the
Intel SoCFPGA Agilex5 SoCDK TSN Config2 board.

The board has two Ethernet ports: gmac2 is a standard RGMII port, while
gmac1 is the TSN port. On gmac1, an FPGA GMII-to-RGMII converter sits
between the MAC and the PHY. This converter provides the RGMII TX/RX
clock delays, so phy-mode is set to "rgmii-id". The driver uses the
new "altr,socfpga-stmmac-agilex5-tsn" compatible to detect this setup
and configure the MAC interface selector for GMII while ensuring the
PHY is not asked to add delays a second time.

Nazim Amirul (4):
  dt-bindings: arm: altera: Add Agilex5 SoCDK TSN Config2 board
  arm64: dts: socfpga: agilex5: Add SoCDK TSN Config2 board
  dt-bindings: net: altr,socfpga-stmmac: Add
    altr,socfpga-stmmac-agilex5-tsn compatible
  net: stmmac: dwmac-socfpga: Add support for Agilex5 TSN GMAC with FPGA
    converter

 .../devicetree/bindings/arm/altera.yaml       |   1 +
 .../bindings/net/altr,socfpga-stmmac.yaml     |   5 +
 arch/arm64/boot/dts/intel/Makefile            |   1 +
 .../intel/socfpga_agilex5_socdk_tsn_cfg2.dts  | 131 ++++++++++++++++++
 .../ethernet/stmicro/stmmac/dwmac-socfpga.c   |  13 +-
 5 files changed, 150 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_tsn_cfg2.dts

-- 
2.43.7

[PATCH v2 1/4] dt-bindings: arm: altera: Add Agilex5 SoCDK TSN Config2 board

[muhammad.nazim.amirul.nazle.asmade]

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

Add compatible string for the Intel SoCFPGA Agilex5 SoCDK TSN Config2
board variant. This board enables gmac1 as a TSN port with an FPGA
GMII-to-RGMII converter providing the RGMII clock delays.

Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
---
 Documentation/devicetree/bindings/arm/altera.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/altera.yaml b/Documentation/devicetree/bindings/arm/altera.yaml
index 3030cf46fe74..e431469a7175 100644
--- a/Documentation/devicetree/bindings/arm/altera.yaml
+++ b/Documentation/devicetree/bindings/arm/altera.yaml
@@ -114,6 +114,7 @@ properties:
               - intel,socfpga-agilex5-socdk-debug
               - intel,socfpga-agilex5-socdk-modular
               - intel,socfpga-agilex5-socdk-nand
+              - intel,socfpga-agilex5-socdk-tsn-cfg2
           - const: intel,socfpga-agilex5
 
       - description: Agilex72 boards
-- 
2.43.7

Re: [PATCH v2 1/4] dt-bindings: arm: altera: Add Agilex5 SoCDK TSN Config2 board

[Krzysztof Kozlowski]

On 07/07/2026 08:13, muhammad.nazim.amirul.nazle.asmade@altera.com wrote:
> From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
> 
> Add compatible string for the Intel SoCFPGA Agilex5 SoCDK TSN Config2
> board variant. This board enables gmac1 as a TSN port with an FPGA
> GMII-to-RGMII converter providing the RGMII clock delays.
> 
> Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>

So you just ignored the tag? Sure, we can ignore patches as well.
Dropping from patchwork.

Best regards,
Krzysztof

Re: [PATCH v2 1/4] dt-bindings: arm: altera: Add Agilex5 SoCDK TSN Config2 board

[Nazle Asmade, Muhammad Nazim Amirul]

On 7/7/2026 2:41 pm, Krzysztof Kozlowski wrote:
>> Add compatible string for the Intel SoCFPGA Agilex5 SoCDK TSN Config2
>> board variant. This board enables gmac1 as a TSN port with an FPGA
>> GMII-to-RGMII converter providing the RGMII clock delays.
>>
>> Signed-off-by: Nazim Amirul<muhammad.nazim.amirul.nazle.asmade@altera.com>
> So you just ignored the tag? Sure, we can ignore patches as well.
> Dropping from patchwork.
> 
> Best regards,
> Krzysztof
Hi Krzysztof,

Apologies for the oversight. In v2 we restructured the series by adding 
a new patch for the net MAC binding (altr,socfpga-stmmac), and during 
that reorganization we accidentally dropped your Acked-by tag from patch 
1/4. This was our mistake and not intentional.

We will carry your Acked-by in v3.

BR,
Nazim

[PATCH v2 2/4] arm64: dts: socfpga: agilex5: Add SoCDK TSN Config2 board

[muhammad.nazim.amirul.nazle.asmade]

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

Add device tree for the Intel SoCFPGA Agilex5 SoCDK TSN Config2 board
variant. This configuration enables gmac1 as a TSN port alongside the
standard gmac2 Ethernet port.

The TSN port (gmac1) connects to its PHY through a GMII-to-RGMII
converter implemented as FPGA soft IP. This converter provides the
RGMII TX/RX clock delays, so phy-mode is set to "rgmii-id" to reflect
MAC-side delays. A board-specific compatible string is used so the
driver can detect the converter and strip the delay bits before
configuring the PHY.

Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
---
 arch/arm64/boot/dts/intel/Makefile            |   1 +
 .../intel/socfpga_agilex5_socdk_tsn_cfg2.dts  | 131 ++++++++++++++++++
 2 files changed, 132 insertions(+)
 create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_tsn_cfg2.dts

diff --git a/arch/arm64/boot/dts/intel/Makefile b/arch/arm64/boot/dts/intel/Makefile
index 270c70fdf084..ce7cf3a63275 100644
--- a/arch/arm64/boot/dts/intel/Makefile
+++ b/arch/arm64/boot/dts/intel/Makefile
@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga_agilex_n6000.dtb \
 				socfpga_agilex5_socdk_013b.dtb \
 				socfpga_agilex5_socdk_modular.dtb \
 				socfpga_agilex5_socdk_nand.dtb \
+				socfpga_agilex5_socdk_tsn_cfg2.dtb \
 				socfpga_agilex72_socdk.dtb \
 				socfpga_agilex7m_socdk.dtb \
 				socfpga_n5x_socdk.dtb
diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_tsn_cfg2.dts b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_tsn_cfg2.dts
new file mode 100644
index 000000000000..bf13ccfc1faa
--- /dev/null
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_tsn_cfg2.dts
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2026, Altera Corporation
+ */
+#include "socfpga_agilex5.dtsi"
+
+/ {
+	model = "SoCFPGA Agilex5 SoCDK TSN Config2";
+	compatible = "intel,socfpga-agilex5-socdk-tsn-cfg2", "intel,socfpga-agilex5";
+
+	aliases {
+		serial0 = &uart0;
+		ethernet1 = &gmac1;
+		ethernet2 = &gmac2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			label = "hps_led0";
+			gpios = <&porta 11 GPIO_ACTIVE_HIGH>;
+		};
+
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		/* We expect the bootloader to fill in the reg */
+		reg = <0x0 0x80000000 0x0 0x0>;
+	};
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gmac1 {
+	status = "okay";
+	compatible = "altr,socfpga-stmmac-agilex5-tsn",
+		     "altr,socfpga-stmmac-agilex5",
+		     "snps,dwxgmac-2.10";
+	phy-mode = "rgmii-id";
+	phy-handle = <&emac1_phy0>;
+	max-frame-size = <9000>;
+
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+
+		emac1_phy0: ethernet-phy@0 {
+			reg = <0>;
+		};
+	};
+};
+
+&gmac2 {
+	status = "okay";
+	phy-mode = "rgmii-id";
+	phy-handle = <&emac2_phy0>;
+	max-frame-size = <9000>;
+
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+
+		emac2_phy0: ethernet-phy@0 {
+			reg = <0>;
+		};
+	};
+};
+
+&osc1 {
+	clock-frequency = <25000000>;
+};
+
+&qspi {
+	status = "okay";
+	flash@0 {
+		compatible = "micron,mt25qu02g", "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <100000000>;
+		m25p,fast-read;
+		cdns,read-delay = <2>;
+		cdns,tshsl-ns = <50>;
+		cdns,tsd2d-ns = <50>;
+		cdns,tchsh-ns = <4>;
+		cdns,tslch-ns = <4>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			qspi_boot: partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x04200000>;
+			};
+
+			root: partition@4200000 {
+				label = "root";
+				reg = <0x04200000 0x0be00000>;
+			};
+		};
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&usb0 {
+	status = "okay";
+	disable-over-current;
+};
+
+&watchdog0 {
+	status = "okay";
+};
-- 
2.43.7

Re: [PATCH v2 2/4] arm64: dts: socfpga: agilex5: Add SoCDK TSN Config2 board

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 2 potential issue(s) to consider:
- [High] Broken RGMII timings due to missing driver support for stripping PHY delays.
- [Low] Undocumented MAC-level compatible string.
--

--- Patch [2]: [PATCH v2 2/4] arm64: dts: socfpga: agilex5: Add SoCDK TSN Config2 board ---
commit 9b347403f48cf7cfca1e37c7a4bbf38717136eeb
Author: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>

arm64: dts: socfpga: agilex5: Add SoCDK TSN Config2 board

This commit adds the device tree for the Intel SoCFPGA Agilex5 SoCDK TSN
Config2 board variant. It enables gmac1 as a TSN port utilizing a
GMII-to-RGMII converter implemented in the FPGA fabric.

> diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_tsn_cfg2.dts b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_tsn_cfg2.dts
> new file mode 100644
> index 0000000000000..bf13ccfc1faa5
> --- /dev/null
> +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_tsn_cfg2.dts

[ ... ]

> +&gmac1 {
> +	status = "okay";
> +	compatible = "altr,socfpga-stmmac-agilex5-tsn",

[Severity: Low]
Is this new MAC-level compatible string documented in the devicetree bindings?
It appears missing from Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml,
which would cause dtbs_check validation to fail with warnings.

> +		     "altr,socfpga-stmmac-agilex5",
> +		     "snps,dwxgmac-2.10";
> +	phy-mode = "rgmii-id";

[Severity: High]
The commit message states that the new compatible string is used so the driver
can detect the converter and strip the delay bits before configuring the PHY.

Does the dwmac-socfpga driver currently support the
altr,socfpga-stmmac-agilex5-tsn string and the associated delay-stripping
logic?

If this support isn't present in the driver yet, the driver will fall back to
altr,socfpga-stmmac-agilex5 and pass rgmii-id unmodified. Will this cause the
PHY driver to add internal delays on top of the delays already provided by the
FPGA soft IP, resulting in broken RGMII timings?

> +	phy-handle = <&emac1_phy0>;
> +	max-frame-size = <9000>;

[ ... ]

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260707061305.27580-1-muhammad.nazim.amirul.nazle.asmade@altera.com?part=2

[PATCH v2 3/4] 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@altera.com>

The Agilex5 SoCDK TSN Config2 board uses a GMII-to-RGMII converter
implemented as FPGA soft IP between gmac1 and its PHY. This converter
provides the RGMII TX/RX clock delays. Document a new compatible string
for this MAC variant so the driver can detect it and configure the
interface accordingly.

Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
---
 .../devicetree/bindings/net/altr,socfpga-stmmac.yaml         | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
index 63084f762373..81f030986fa3 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 +47,10 @@ properties:
       - items:
           - const: altr,socfpga-stmmac-agilex5
           - const: snps,dwxgmac-2.10
+      - items:
+          - const: altr,socfpga-stmmac-agilex5-tsn
+          - const: altr,socfpga-stmmac-agilex5
+          - const: snps,dwxgmac-2.10
 
   clocks:
     minItems: 1
-- 
2.43.7

[PATCH net-next v2 4/4] net: stmmac: dwmac-socfpga: Add support for Agilex5 TSN GMAC with FPGA converter

[muhammad.nazim.amirul.nazle.asmade]

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

The Agilex5 SoCDK TSN Config2 board uses a GMII-to-RGMII converter
implemented as FPGA soft IP between gmac1 and its PHY. This converter
provides the RGMII TX/RX clock delays, so the MAC interface selector
must be configured for GMII while the PHY is configured without delays.

Add the "altr,socfpga-stmmac-agilex5-tsn" compatible to the match table
and detect it in probe to force GMII for the MAC interface selector and
strip the delay bits from phy_interface so the PHY is not configured to
add delays already provided by the FPGA converter.

Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index 1d7f0a57d288..bf591a68502f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -69,12 +69,13 @@ struct socfpga_dwmac {
 	void __iomem *tse_pcs_base;
 	void __iomem *sgmii_adapter_base;
 	bool f2h_ptp_ref_clk;
+	phy_interface_t mac_interface;
 	const struct socfpga_dwmac_ops *ops;
 };
 
 static phy_interface_t socfpga_get_plat_phymode(struct socfpga_dwmac *dwmac)
 {
-	return dwmac->plat_dat->phy_interface;
+	return dwmac->mac_interface;
 }
 
 static void socfpga_sgmii_config(struct socfpga_dwmac *dwmac, bool enable)
@@ -650,6 +651,15 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 	plat_dat->pcs_exit = socfpga_dwmac_pcs_exit;
 	plat_dat->select_pcs = socfpga_dwmac_select_pcs;
 
+	dwmac->mac_interface = plat_dat->phy_interface;
+
+	if (of_device_is_compatible(pdev->dev.of_node,
+				    "altr,socfpga-stmmac-agilex5-tsn")) {
+		dwmac->mac_interface = PHY_INTERFACE_MODE_GMII;
+		if (phy_interface_mode_is_rgmii(plat_dat->phy_interface))
+			plat_dat->phy_interface = PHY_INTERFACE_MODE_RGMII;
+	}
+
 	ops->setup_plat_dat(dwmac);
 
 	return devm_stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res);
@@ -674,6 +684,7 @@ static const struct of_device_id socfpga_dwmac_match[] = {
 	{ .compatible = "altr,socfpga-stmmac", .data = &socfpga_gen5_ops },
 	{ .compatible = "altr,socfpga-stmmac-a10-s10", .data = &socfpga_gen10_ops },
 	{ .compatible = "altr,socfpga-stmmac-agilex5", .data = &socfpga_agilex5_ops },
+	{ .compatible = "altr,socfpga-stmmac-agilex5-tsn", .data = &socfpga_agilex5_ops },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, socfpga_dwmac_match);
-- 
2.43.7