From: Dinesh Maniyam <[email protected]>

>From v2025.10 onward, Agilex platforms use the upstream Linux device
tree sources instead of local copies.
To continue using a single defconfig while supporting NAND boot,
restore Multi-DTB support and update the DT paths to the upstream
intel directory.

NAND boot is configured to use FDT-1, while other boot flows
continue to use the default device tree.
No functional change is intended for non-NAND boot paths.

Signed-off-by: Dinesh Maniyam <[email protected]>
---
 arch/arm/dts/socfpga_agilex_socdk-u-boot.dtsi | 38 +++++++++++++++++++
 configs/socfpga_agilex_defconfig              |  2 +-
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/socfpga_agilex_socdk-u-boot.dtsi 
b/arch/arm/dts/socfpga_agilex_socdk-u-boot.dtsi
index 6f2fe7bf746..37a3b14ed33 100644
--- a/arch/arm/dts/socfpga_agilex_socdk-u-boot.dtsi
+++ b/arch/arm/dts/socfpga_agilex_socdk-u-boot.dtsi
@@ -181,3 +181,41 @@
                };
        };
 };
+
+#if !defined(CONFIG_SOCFPGA_SECURE_VAB_AUTH)
+&fdt_0_blob {
+       filename = "dts/upstream/src/arm64/intel/socfpga_agilex_socdk.dtb";
+};
+
+&images {
+       fdt-1 {
+               description = "socfpga_socdk_nand";
+               type = "flat_dt";
+               compression = "none";
+               fdt_1_blob: blob-ext {
+                       filename = 
"dts/upstream/src/arm64/intel/socfpga_agilex_socdk_nand.dtb";
+               };
+               hash {
+                       algo = "crc32";
+               };
+       };
+};
+
+&board_config {
+       board-1 {
+               description = "board_1";
+               firmware = "atf";
+               loadables = "uboot";
+               fdt = "fdt-1";
+               signature {
+                       algo = "crc32";
+                       key-name-hint = "dev";
+                       sign-images = "atf", "uboot", "fdt-1";
+               };
+       };
+};
+
+&binman {
+       /delete-node/ kernel;
+};
+#endif
diff --git a/configs/socfpga_agilex_defconfig b/configs/socfpga_agilex_defconfig
index eb99392f0ea..b2c7b30d546 100644
--- a/configs/socfpga_agilex_defconfig
+++ b/configs/socfpga_agilex_defconfig
@@ -58,7 +58,7 @@ CONFIG_CMD_CACHE=y
 CONFIG_CMD_SMC=y
 CONFIG_CMD_UBI=y
 CONFIG_OF_UPSTREAM=y
-CONFIG_OF_LIST=""
+CONFIG_OF_LIST="intel/socfpga_agilex_socdk intel/socfpga_agilex_socdk_nand"
 CONFIG_ENV_IS_IN_FAT=y
 CONFIG_ENV_IS_IN_UBI=y
 CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
-- 
2.43.7

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