[PATCH] arm64: dts: socfpga: agilex: add emmc support

[PATCH] arm64: dts: socfpga: agilex: add emmc support

[tzeyee.ng]

From: Ng Tze Yee <tzeyee.ng@altera.com>

The Agilex devkit supports a separate NAND/eMMC daughter card. The
NAND/eMMC daughter card replaces the SDMMC slot that is on the default
daughter card and thus requires a separate board dts file.

New eMMC dts which is based on the existing NAND dts, which is
needed to comply with spec in which eMMC board ID is designated as 2.

Signed-off-by: Ng Tze Yee <tzeyee.ng@altera.com>
---
 arch/arm64/boot/dts/intel/Makefile            |   1 +
 .../dts/intel/socfpga_agilex_socdk_emmc.dts   | 105 ++++++++++++++++++
 2 files changed, 106 insertions(+)
 create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex_socdk_emmc.dts

diff --git a/arch/arm64/boot/dts/intel/Makefile b/arch/arm64/boot/dts/intel/Makefile
index a117268267ee..6f4da79725de 100644
--- a/arch/arm64/boot/dts/intel/Makefile
+++ b/arch/arm64/boot/dts/intel/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 dtb-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga_agilex_n6000.dtb \
 				socfpga_agilex_socdk.dtb \
+				socfpga_agilex_socdk_emmc.dtb \
 				socfpga_agilex_socdk_nand.dtb \
 				socfpga_agilex3_socdk.dtb \
 				socfpga_agilex5_socdk.dtb \
diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_emmc.dts b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_emmc.dts
new file mode 100644
index 000000000000..5caf231de370
--- /dev/null
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_emmc.dts
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier:     GPL-2.0
+/*
+ * Copyright (C) 2026, Intel Corporation
+ */
+#include "socfpga_agilex.dtsi"
+
+/ {
+	model = "SoCFPGA Agilex SoCDK";
+	compatible = "intel,socfpga-agilex-socdk", "intel,socfpga-agilex";
+
+	aliases {
+		serial0 = &uart0;
+		ethernet0 = &gmac0;
+		ethernet1 = &gmac1;
+		ethernet2 = &gmac2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		led0 {
+			label = "hps_led0";
+			gpios = <&portb 20 GPIO_ACTIVE_HIGH>;
+		};
+
+		led1 {
+			label = "hps_led1";
+			gpios = <&portb 19 GPIO_ACTIVE_HIGH>;
+		};
+
+		led2 {
+			label = "hps_led2";
+			gpios = <&portb 21 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		/* We expect the bootloader to fill in the reg */
+		reg = <0 0x80000000 0 0>;
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gmac2 {
+	status = "okay";
+	/* PHY delays is configured via skew properties */
+	phy-mode = "rgmii";
+	phy-handle = <&phy0>;
+
+	max-frame-size = <9000>;
+
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+		phy0: ethernet-phy@0 {
+			reg = <4>;
+
+			txd0-skew-ps = <0>; /* -420ps */
+			txd1-skew-ps = <0>; /* -420ps */
+			txd2-skew-ps = <0>; /* -420ps */
+			txd3-skew-ps = <0>; /* -420ps */
+			rxd0-skew-ps = <420>; /* 0ps */
+			rxd1-skew-ps = <420>; /* 0ps */
+			rxd2-skew-ps = <420>; /* 0ps */
+			rxd3-skew-ps = <420>; /* 0ps */
+			txen-skew-ps = <0>; /* -420ps */
+			txc-skew-ps = <900>; /* 0ps */
+			rxdv-skew-ps = <420>; /* 0ps */
+			rxc-skew-ps = <1680>; /* 780ps */
+		};
+	};
+};
+
+&mmc {
+	status = "okay";
+	cap-mmc-highspeed;
+	broken-cd;
+	bus-width = <4>;
+	clk-phase-sd-hs = <0>, <135>;
+};
+
+&osc1 {
+	clock-frequency = <25000000>;
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&usb0 {
+	status = "okay";
+	disable-over-current;
+};
+
+&watchdog0 {
+	status = "okay";
+};
-- 
2.25.1

Re: [PATCH] arm64: dts: socfpga: agilex: add emmc support

[Dinh Nguyen]

On 1/11/26 21:35, tzeyee.ng@altera.com wrote:
> From: Ng Tze Yee <tzeyee.ng@altera.com>
> 
> The Agilex devkit supports a separate NAND/eMMC daughter card. The
> NAND/eMMC daughter card replaces the SDMMC slot that is on the default
> daughter card and thus requires a separate board dts file.
> 
> New eMMC dts which is based on the existing NAND dts, which is
> needed to comply with spec in which eMMC board ID is designated as 2.
> 

Can you elaborate what you mean by this? I don't see a change that is 
related.

Dinh

Re: [PATCH] arm64: dts: socfpga: agilex: add emmc support

[Ng, Tze Yee]

On 14/1/2026 1:54 am, Dinh Nguyen wrote:
> [CAUTION: This email is from outside your organization. Unless you trust 
> the sender, do not click on links or open attachments as it may be a 
> fraudulent email attempting to steal your information and/or compromise 
> your computer.]
> 
> On 1/11/26 21:35, tzeyee.ng@altera.com wrote:
>> From: Ng Tze Yee <tzeyee.ng@altera.com>
>>
>> The Agilex devkit supports a separate NAND/eMMC daughter card. The
>> NAND/eMMC daughter card replaces the SDMMC slot that is on the default
>> daughter card and thus requires a separate board dts file.
>>
>> New eMMC dts which is based on the existing NAND dts, which is
>> needed to comply with spec in which eMMC board ID is designated as 2.
>>
> 
> Can you elaborate what you mean by this? I don't see a change that is
> related.
> 
> Dinh
The board ID is transparent to Linux kernel. Will drop the board ID 
reference from commit.

Re: [PATCH] arm64: dts: socfpga: agilex: add emmc support

[Krzysztof Kozlowski]

On 12/01/2026 04:35, tzeyee.ng@altera.com wrote:
> diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_emmc.dts b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_emmc.dts
> new file mode 100644
> index 000000000000..5caf231de370
> --- /dev/null
> +++ b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_emmc.dts
> @@ -0,0 +1,105 @@
> +// SPDX-License-Identifier:     GPL-2.0

Please fix spacing of your tag.

> +/*
> + * Copyright (C) 2026, Intel Corporation
> + */
> +#include "socfpga_agilex.dtsi"
> +
> +/ {
> +	model = "SoCFPGA Agilex SoCDK";
> +	compatible = "intel,socfpga-agilex-socdk", "intel,socfpga-agilex";

Where are the bindings? Where is new compatible?

Best regards,
Krzysztof