[PATCH v2 0/2] arm64: dts: socfpga: agilex: add SoCDK multi-QSPI board

[PATCH v2 0/2] arm64: dts: socfpga: agilex: add SoCDK multi-QSPI board

[genevieve.chan]

From: Genevieve Chan <genevieve.chan@altera.com>

The Agilex SoCDK is populated with a single QSPI flash by default. A
multi-QSPI daughter board can be fitted in its place. That board connects
four Micron MT25QU02G devices (256 MiB each, 1 GiB total) to the HPS
QSPI controller on chip selects 0-3. Each device is one "Boot and fpga
data" partition covering the whole flash, and is described in quad mode
at 25 MHz.

This is a board-level population difference, in the same way the
existing SoCDK eMMC and NAND variants differ from the default SoCDK.
The HPS is the Agilex SoC, later marketed as Agilex 7 F-Series. The
programming model is unchanged, so the board falls back to
"intel,socfpga-agilex" and does not add an F-Series SoC compatible.
Agilex 7 M-Series is a different device and already has its own
fallback.

Patch 1 documents that compatible next to the other Agilex SoCDK
boards. Patch 2 adds socfpga_agilex_socdk_multiqspi.dts. UART,
Ethernet, USB, SDMMC, LEDs and the watchdog match the SoCDK; the QSPI
node is the difference.

Changes in v2:
- Rename the compatible, DTS filename and model, dropping "agilex7f".
- State in the binding patch why the fallback is "intel,socfpga-agilex".
- Describe the daughter card instead of restating the diff.

Genevieve Chan (2):
  dt-bindings: arm: altera: add Agilex SoCDK multi-QSPI board
  arm64: dts: socfpga: agilex: add Agilex SoCDK multi-QSPI board

 Documentation/devicetree/bindings/arm/altera.yaml  |   1 +
 arch/arm64/boot/dts/intel/Makefile                 |   1 +
 .../dts/intel/socfpga_agilex_socdk_multiqspi.dts   | 213 +++++++++++++++++++++
 3 files changed, 215 insertions(+)

base-commit: 04a1d21330501b113ba04efb81724f1c95ad2db8
--
2.43.7

[PATCH v2 1/2] dt-bindings: arm: altera: add Agilex SoCDK multi-QSPI board

[genevieve.chan]

From: Genevieve Chan <genevieve.chan@altera.com>

The Agilex SoCDK can be fitted with a multi-QSPI daughter card in
place of the default single-flash QSPI card. The multi-QSPI card
carries four Micron MT25QU02G flashes connected to the HPS QSPI
controller on chip selects 0-3.

The different flash population requires a separate board DTS, hence, add
a board compatible for it, following the existing SoCDK variants.
The board uses the Agilex SoC (marketed as Agilex 7 F-Series), so it
falls back to "intel,socfpga-agilex".

Signed-off-by: Genevieve Chan <genevieve.chan@altera.com>
---
Changes in v2:
- Rename compatible from intel,socfpga-agilex7f-socdk-multiqspi to
  intel,socfpga-agilex-socdk-multiqspi.
- Describe the hardware difference in the commit message.

 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 5fce1161210e..01f6323b9a6b 100644
--- a/Documentation/devicetree/bindings/arm/altera.yaml
+++ b/Documentation/devicetree/bindings/arm/altera.yaml
@@ -97,6 +97,7 @@ properties:
               - intel,socfpga-agilex-n6000
               - intel,socfpga-agilex-socdk
               - intel,socfpga-agilex-socdk-emmc
+              - intel,socfpga-agilex-socdk-multiqspi
           - const: intel,socfpga-agilex
 
       - description: Agilex3 boards
-- 
2.43.7

[PATCH v2 2/2] arm64: dts: socfpga: agilex: add Agilex SoCDK multi-QSPI board

[genevieve.chan]

From: Genevieve Chan <genevieve.chan@altera.com>

Add a device tree for the Agilex SoCDK fitted with the multi-QSPI
daughter board. The daughter board replaces the single QSPI flash of
the default SoCDK with four Micron MT25QU02G flashes on chip selects
0-3, which allows the system to use up to 1 GiB of QSPI storage.

The board is otherwise identical to the SoCDK and builds on
socfpga_agilex.dtsi.

Signed-off-by: Genevieve Chan <genevieve.chan@altera.com>
---
Changes in v2:
- Rename file, compatible and model to drop the "agilex7f" prefix.
- Reword commit message to describe the hardware.

 arch/arm64/boot/dts/intel/Makefile            |   1 +
 .../intel/socfpga_agilex_socdk_multiqspi.dts  | 213 ++++++++++++++++++
 2 files changed, 214 insertions(+)
 create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex_socdk_multiqspi.dts

diff --git a/arch/arm64/boot/dts/intel/Makefile b/arch/arm64/boot/dts/intel/Makefile
index b52cd2330cef..071bad408688 100644
--- a/arch/arm64/boot/dts/intel/Makefile
+++ b/arch/arm64/boot/dts/intel/Makefile
@@ -2,6 +2,7 @@
 dtb-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga_agilex_n6000.dtb \
 				socfpga_agilex_socdk.dtb \
 				socfpga_agilex_socdk_emmc.dtb \
+				socfpga_agilex_socdk_multiqspi.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_multiqspi.dts b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_multiqspi.dts
new file mode 100644
index 000000000000..0bf087fa7553
--- /dev/null
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_multiqspi.dts
@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2026, Intel Corporation
+ */
+#include "socfpga_agilex.dtsi"
+
+/ {
+	model = "SoCFPGA Agilex SoCDK multi-QSPI daughter board";
+	compatible = "intel,socfpga-agilex-socdk-multiqspi", "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";
+};
+
+&gmac0 {
+	status = "okay";
+	/* PHY delays are 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@4 {
+			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-sd-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";
+};
+
+&qspi {
+	status = "okay";
+
+	flash@0 {
+		compatible = "micron,mt25qu02g", "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		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_boot0: partition@0 {
+				label = "Boot and fpga data";
+				reg = <0x0 0x10000000>;
+			};
+		};
+	};
+
+	flash@1 {
+		compatible = "micron,mt25qu02g", "jedec,spi-nor";
+		reg = <1>;
+		spi-max-frequency = <25000000>;
+
+		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_boot1: partition@0 {
+				label = "Boot and fpga data";
+				reg = <0x0 0x10000000>;
+			};
+		};
+	};
+
+	flash@2 {
+		compatible = "micron,mt25qu02g", "jedec,spi-nor";
+		reg = <2>;
+		spi-max-frequency = <25000000>;
+
+		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_boot2: partition@0 {
+				label = "Boot and fpga data";
+				reg = <0x0 0x10000000>;
+			};
+		};
+	};
+
+	flash@3 {
+		compatible = "micron,mt25qu02g", "jedec,spi-nor";
+		reg = <3>;
+		spi-max-frequency = <25000000>;
+
+		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_boot3: partition@0 {
+				label = "Boot and fpga data";
+				reg = <0x0 0x10000000>;
+			};
+		};
+	};
+};
-- 
2.43.7

Re: [PATCH v2 1/2] dt-bindings: arm: altera: add Agilex SoCDK multi-QSPI board

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 75 bytes --]

Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

[-- Attachment #2: signature.asc --]
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Re: [PATCH v2 2/2] arm64: dts: socfpga: agilex: add Agilex SoCDK multi-QSPI board

[Dinh Nguyen]

NIT: your commit header "arm64: dts: socfpga: agilex: add Agilex SoCDK 
multi-QSPI board"

Avoid using the same name multiple times. Please reword this to

arm64: dts: socfpga: agilex: add SoCDK multi-QSPI board

or

arm64: dts: socfpga: add Agilex SoCDK multi-QSPI board


On 10/5/26 21:54, genevieve.chan@altera.com wrote:
> From: Genevieve Chan <genevieve.chan@altera.com>
> 
> Add a device tree for the Agilex SoCDK fitted with the multi-QSPI
> daughter board. The daughter board replaces the single QSPI flash of
> the default SoCDK with four Micron MT25QU02G flashes on chip selects
> 0-3, which allows the system to use up to 1 GiB of QSPI storage.
> 
> The board is otherwise identical to the SoCDK and builds on
> socfpga_agilex.dtsi.
> 
> Signed-off-by: Genevieve Chan <genevieve.chan@altera.com>
> ---
> Changes in v2:
> - Rename file, compatible and model to drop the "agilex7f" prefix.
> - Reword commit message to describe the hardware.
> 
>   arch/arm64/boot/dts/intel/Makefile            |   1 +
>   .../intel/socfpga_agilex_socdk_multiqspi.dts  | 213 ++++++++++++++++++
>   2 files changed, 214 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex_socdk_multiqspi.dts
> 
> diff --git a/arch/arm64/boot/dts/intel/Makefile b/arch/arm64/boot/dts/intel/Makefile
> index b52cd2330cef..071bad408688 100644
> --- a/arch/arm64/boot/dts/intel/Makefile
> +++ b/arch/arm64/boot/dts/intel/Makefile
> @@ -2,6 +2,7 @@
>   dtb-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga_agilex_n6000.dtb \
>   				socfpga_agilex_socdk.dtb \
>   				socfpga_agilex_socdk_emmc.dtb \
> +				socfpga_agilex_socdk_multiqspi.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_multiqspi.dts b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_multiqspi.dts
> new file mode 100644
> index 000000000000..0bf087fa7553
> --- /dev/null
> +++ b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_multiqspi.dts
> @@ -0,0 +1,213 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2026, Intel Corporation
> + */
> +#include "socfpga_agilex.dtsi"
> +
> +/ {
> +	model = "SoCFPGA Agilex SoCDK multi-QSPI daughter board";
> +	compatible = "intel,socfpga-agilex-socdk-multiqspi", "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";
> +};
> +
> +&gmac0 {
> +	status = "okay";
> +	/* PHY delays are 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@4 {
> +			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-sd-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";
> +};
> +
> +&qspi {
> +	status = "okay";
> +
> +	flash@0 {
> +		compatible = "micron,mt25qu02g", "jedec,spi-nor";
> +		reg = <0>;
> +		spi-max-frequency = <25000000>;

The devkit has 100 MHz, why is this card only 25M MHz?
> +
> +		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_boot0: partition@0 {
> +				label = "Boot and fpga data";
> +				reg = <0x0 0x10000000>;
> +			};
> +		};
> +	};
> +
> +	flash@1 {
> +		compatible = "micron,mt25qu02g", "jedec,spi-nor";
> +		reg = <1>;
> +		spi-max-frequency = <25000000>;
> +
> +		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_boot1: partition@0 {
> +				label = "Boot and fpga data";
> +				reg = <0x0 0x10000000>;
> +			};
> +		};
> +	};
> +
> +	flash@2 {
> +		compatible = "micron,mt25qu02g", "jedec,spi-nor";
> +		reg = <2>;
> +		spi-max-frequency = <25000000>;
> +
> +		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_boot2: partition@0 {
> +				label = "Boot and fpga data";
> +				reg = <0x0 0x10000000>;
> +			};
> +		};
> +	};
> +
> +	flash@3 {
> +		compatible = "micron,mt25qu02g", "jedec,spi-nor";
> +		reg = <3>;
> +		spi-max-frequency = <25000000>;
> +
> +		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_boot3: partition@0 {
> +				label = "Boot and fpga data";

Sashiko's comment on this is valid. You give these label a unique name, 
"Boot and fpga data 3"


Dinh

Re: [PATCH v2 2/2] arm64: dts: socfpga: agilex: add Agilex SoCDK multi-QSPI board

[Chan, Genevieve]

Hi Dinh,
Apologies, v3 only addressed one of your three comments on v2. I
missed the other two; replies are inline below, and both are fixed in
v4.

On 7/10/2026 9:43 pm, Dinh Nguyen wrote:
> 
> NIT: your commit header "arm64: dts: socfpga: agilex: add Agilex SoCDK
> multi-QSPI board"
> 
> Avoid using the same name multiple times. Please reword this to
> 
> arm64: dts: socfpga: agilex: add SoCDK multi-QSPI board
> 
> or
> 
> arm64: dts: socfpga: add Agilex SoCDK multi-QSPI board
> 

Done in v3, using the first form.
> 
> On 10/5/26 21:54, genevieve.chan@altera.com wrote:
>> From: Genevieve Chan <genevieve.chan@altera.com>
>>
>> Add a device tree for the Agilex SoCDK fitted with the multi-QSPI
>> daughter board. The daughter board replaces the single QSPI flash of
>> the default SoCDK with four Micron MT25QU02G flashes on chip selects
>> 0-3, which allows the system to use up to 1 GiB of QSPI storage.
>>
>> The board is otherwise identical to the SoCDK and builds on
>> socfpga_agilex.dtsi.
>>
>> Signed-off-by: Genevieve Chan <genevieve.chan@altera.com>
>> ---
>> Changes in v2:
>> - Rename file, compatible and model to drop the "agilex7f" prefix.
>> - Reword commit message to describe the hardware.
>>
>>   arch/arm64/boot/dts/intel/Makefile            |   1 +
>>   .../intel/socfpga_agilex_socdk_multiqspi.dts  | 213 ++++++++++++++++++
>>   2 files changed, 214 insertions(+)
>>   create mode 100644 arch/arm64/boot/dts/intel/
>> socfpga_agilex_socdk_multiqspi.dts
>>
>> diff --git a/arch/arm64/boot/dts/intel/Makefile b/arch/arm64/boot/dts/
>> intel/Makefile
>> index b52cd2330cef..071bad408688 100644
>> --- a/arch/arm64/boot/dts/intel/Makefile
>> +++ b/arch/arm64/boot/dts/intel/Makefile
>> @@ -2,6 +2,7 @@
>>   dtb-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga_agilex_n6000.dtb \
>>                   socfpga_agilex_socdk.dtb \
>>                   socfpga_agilex_socdk_emmc.dtb \
>> +                socfpga_agilex_socdk_multiqspi.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_multiqspi.dts b/arch/arm64/boot/dts/intel/
>> socfpga_agilex_socdk_multiqspi.dts
>> new file mode 100644
>> index 000000000000..0bf087fa7553
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk_multiqspi.dts
>> @@ -0,0 +1,213 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Copyright (C) 2026, Intel Corporation
>> + */
>> +#include "socfpga_agilex.dtsi"
>> +
>> +/ {
>> +    model = "SoCFPGA Agilex SoCDK multi-QSPI daughter board";
>> +    compatible = "intel,socfpga-agilex-socdk-multiqspi",
>> "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";
>> +};
>> +
>> +&gmac0 {
>> +    status = "okay";
>> +    /* PHY delays are 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@4 {
>> +            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-sd-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";
>> +};
>> +
>> +&qspi {
>> +    status = "okay";
>> +
>> +    flash@0 {
>> +        compatible = "micron,mt25qu02g", "jedec,spi-nor";
>> +        reg = <0>;
>> +        spi-max-frequency = <25000000>;
> 
> The devkit has 100 MHz, why is this card only 25M MHz?
Yes, the SoCDK runs its QSPI flash at 100 MHz. The default SoCDK QSPI
card has a single flash on the bus. On the multi-QSPI card, the four
MT25QU02G devices share SCLK and DQ[3:0], with only the chip selects
routed separately. The added load of four devices, plus the longer
routing on the daughter card, lowers the clock the bus can run reliably.
Altera's multi-QSPI reference design for this card is validated at 25
MHz, so the DTS uses that value.

I'll add this to the commit message in v4.
>> +
>> +        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_boot0: partition@0 {
>> +                label = "Boot and fpga data";
>> +                reg = <0x0 0x10000000>;
>> +            };
>> +        };
>> +    };
>> +
>> +    flash@1 {
>> +        compatible = "micron,mt25qu02g", "jedec,spi-nor";
>> +        reg = <1>;
>> +        spi-max-frequency = <25000000>;
>> +
>> +        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_boot1: partition@0 {
>> +                label = "Boot and fpga data";
>> +                reg = <0x0 0x10000000>;
>> +            };
>> +        };
>> +    };
>> +
>> +    flash@2 {
>> +        compatible = "micron,mt25qu02g", "jedec,spi-nor";
>> +        reg = <2>;
>> +        spi-max-frequency = <25000000>;
>> +
>> +        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_boot2: partition@0 {
>> +                label = "Boot and fpga data";
>> +                reg = <0x0 0x10000000>;
>> +            };
>> +        };
>> +    };
>> +
>> +    flash@3 {
>> +        compatible = "micron,mt25qu02g", "jedec,spi-nor";
>> +        reg = <3>;
>> +        spi-max-frequency = <25000000>;
>> +
>> +        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_boot3: partition@0 {
>> +                label = "Boot and fpga data";
> 
> Sashiko's comment on this is valid. You give these label a unique name,
> "Boot and fpga data 3"
> 
> 
> Dinh

Agreed. I'll make the labels unique in v4. flash@0 keeps "Boot and
fpga data" since U-Boot's RSU code looks up the boot partition on CS0
by that exact label.
flash@1-3 become "Boot and fpga data 1", "2" and "3".

-- 
Thanks,
Genevieve Chan