This reverts commit 432071b7a1.
commit: 432071b7a1 scripts: Makefile: Enable creation of _symbols_ DT node for overlays
changes the common Makefile and force creation of __symbols__ node on all platforms.
This is not good and not acceptible under some cases due to this change will increase
the final DTB size a lot and bring big impact for others who does not need creation
of _symbols_ DT node for overlays.For example, on i.MX OP-TEE, the maxsize of DT is 1MB,
this patch will break some of the i.MX6/i.MX7 boards to boot with OP-TEE enabled.
BTW, community has the similar patch but rejected. The following post discuss about this:
https://lore.kernel.org/patchwork/patch/821645/
For specifc plaform/board which need the creation of _symbols_ DT node for overlays, user can
define DTC_FLAGS_target either trough dtc build command line(#1) or with board specific Makefile(#2)
For example:#1
make DTC_FLAGS_fsl-ls1028a-qds=-@ freescale/fsl-ls1028a-qds.dtb
For example:#2
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -1,4 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
+# required for overlay support
+#DTC_FLAGS_fsl-ls1028a-qds := -@
+
Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Alex Marginean <alexandru.marginean@nxp.com>
Tested-by: Alex Marginean <alexandru.marginean@nxp.com>
(cherry picked from commit 8d0eaf37fa)
2f5be29292