ARM: dts: stm32: Generate u-boot.itb using binman on DH STM32 DHSOM

Describe the u-boot.its generation in stm32mp15xx-dhsom-u-boot.dtsi
binman {} DT node as a replacement for current CONFIG_SPL_FIT_SOURCE
use, dispose of both u-boot-dhcom.its and u-boot-dhcor.its.

Use fdt-SEQ/config-SEQ to generate a list of fdt-N fitImage images {} and
matching configuration {} node entries. The configuration node entry names
no longer encode _somrevN_boardrevN suffix, which was never really used, so
drop this functionality by default. Rework board_fit_config_name_match() to
match on the new configuration node entry names.

Users who do need the match on _somrevN_boardrevN can either replace the
fdt-SEQ/config-SEQ with fixed fdt-N/config-N nodes which each encode the
matching 'description = "NAME_somrevN_boardrevN"' to restore the old
behavior verbatim, or better use SPL DT overlays for U-Boot control DT
the same way e.g. i.MX8MP DHCOM does to support multiple SoM and board
variants.

Signed-off-by: Marek Vasut <[email protected]>
Reviewed-by: Patrick Delaunay <[email protected]>

3 files changed, 55 insertions, 0 deletions

diff --git a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
index d7b78cdcfa9..dd67e960a64 100644
--- a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
@@ -8,6 +8,7 @@
 #include "stm32mp15-ddr3-dhsom-2x1Gb-1066-binG.dtsi"
 #include "stm32mp15-ddr3-dhsom-2x2Gb-1066-binG.dtsi"
 #include "stm32mp15-ddr3-dhsom-2x4Gb-1066-binG.dtsi"
+#include "stm32mp15xx-dhsom-u-boot.dtsi"
 
 / {
 	aliases {
diff --git a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
index ba84db679e1..08439342cb2 100644
--- a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
@@ -12,6 +12,7 @@
 #include "stm32mp15-ddr3-dhsom-2x1Gb-1066-binG.dtsi"
 #include "stm32mp15-ddr3-dhsom-2x2Gb-1066-binG.dtsi"
 #include "stm32mp15-ddr3-dhsom-2x4Gb-1066-binG.dtsi"
+#include "stm32mp15xx-dhsom-u-boot.dtsi"
 
 / {
 	bootph-all;
diff --git a/arch/arm/dts/stm32mp15xx-dhsom-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhsom-u-boot.dtsi
new file mode 100644
index 00000000000..386c605c07f
--- /dev/null
+++ b/arch/arm/dts/stm32mp15xx-dhsom-u-boot.dtsi
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2024 Marek Vasut <[email protected]>
+ */
+
+&binman {
+	 u-boot {
+		filename = "u-boot.itb";
+
+		fit {
+			description = "U-Boot mainline";
+			fit,fdt-list = "of-list";
+			#address-cells = <1>;
+
+			images {
+				uboot {
+					arch = "arm";
+					compression = "none";
+					description = "U-Boot (32-bit)";
+					entry = <CONFIG_TEXT_BASE>;
+					load = <CONFIG_TEXT_BASE>;
+					type = "standalone";
+
+					uboot-blob {
+						filename = "u-boot-nodtb.bin";
+						type = "blob-ext";
+					};
+				};
+
+				@fdt-SEQ {
+					compression = "none";
+					description = "NAME";
+					type = "flat_dt";
+
+					uboot-fdt-blob {
+						filename = "u-boot.dtb";
+						type = "blob-ext";
+					};
+				};
+			};
+
+			configurations {
+				default = "@config-DEFAULT-SEQ";
+
+				@config-SEQ {
+					description = "NAME";
+					fdt = "fdt-SEQ";
+					firmware = "uboot";
+				};
+			};
+		};
+	};
+};