[PATCH v3 2/2] dts: support building all dtb files for a specific vendor

[Caleb Connolly]

This adjusts OF_UPSTREAM to behave more like the kernel by allowing for
all the devicetree files for a given vendor to be compiled. This is
useful for Qualcomm in particular as most boards are supported by a
single U-Boot build just provided with a different DT.

Signed-off-by: Caleb Connolly <caleb.connolly at linaro.org>
---
 dts/Kconfig          | 24 ++++++++++++++++++++++++
 scripts/Makefile.dts | 13 +++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/dts/Kconfig b/dts/Kconfig
index b9b6367154ef..6883a000a052 100644
--- a/dts/Kconfig
+++ b/dts/Kconfig
@@ -100,8 +100,32 @@ config OF_UPSTREAM
 	  However, newer boards whose devicetree source files haven't landed in
 	  the dts/upstream subtree, they can override this option to have the
 	  DT build from existing U-Boot tree location instead.
 
+config OF_UPSTREAM_BUILD_VENDOR
+	bool "Build all devicetree files for a particular vendor"
+	depends on OF_UPSTREAM
+	help
+	  Enable building all devicetree files for a particular vendor. This
+	  is useful for generic U-Boot configurations where many boards can
+	  be supported with a single binary.
+
+	  This is only available for platforms using upstream devicetree.
+
+config OF_UPSTREAM_VENDOR
+	string "Vendor to build all upstream devicetree files for"
+	depends on OF_UPSTREAM_BUILD_VENDOR
+	default "qcom" if ARCH_SNAPDRAGON
+	default "rockchip" if ARCH_ROCKCHIP
+	default "amlogic" if ARCH_MESON
+	default "allwinner" if ARCH_SUNXI
+	default "mediatek" if ARCH_MEDIATEK
+	default "marvell" if ARCH_MVEBU || ARCH_KIRKWOOD
+	default "xilinx" if ARCH_VERSAL || ARCH_ZYNQ
+	default "nvidia" if ARCH_TEGRA
+	help
+	  Select the vendor to build all devicetree files for.
+
 choice
 	prompt "Provider of DTB for DT control"
 	depends on OF_CONTROL
 
diff --git a/scripts/Makefile.dts b/scripts/Makefile.dts
index 5e2429c6170c..790f3c508f19 100644
--- a/scripts/Makefile.dts
+++ b/scripts/Makefile.dts
@@ -1,3 +1,16 @@
 # SPDX-License-Identifier: GPL-2.0+
 
 dtb-y += $(patsubst %,%.dtb,$(subst ",,$(CONFIG_DEFAULT_DEVICE_TREE) $(CONFIG_OF_LIST) $(CONFIG_SPL_OF_LIST)))
+
+ifeq ($(CONFIG_OF_UPSTREAM_BUILD_VENDOR),y)
+ifeq ($(CONFIG_ARM64),y)
+dt_dir := $(srctree)/dts/upstream/src/arm64
+else
+dt_dir := $(srctree)/dts/upstream/src/$(ARCH)
+endif
+
+dtb-vendor_dts := $(patsubst %.dts,%.dtb,$(wildcard $(dt_dir)/$(subst ",,$(CONFIG_OF_UPSTREAM_VENDOR))/*.dts))
+
+dtb-y += $(subst $(dt_dir)/,,$(dtb-vendor_dts))
+
+endif

-- 
2.44.0