openwrt/target/linux/bcm27xx/patches-5.4/950-0327-kbuild-Allow-.dtbo-overlays-to-be-built-piecemeal.patch
Koen Vandeputte f9f62d43e4 kernel: bump 5.4 to 5.4.24
Refreshed all patches.

Compile-tested on: imx6
Runtime-tested on: imx6

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2020-03-09 20:43:53 +01:00

37 lines
1.2 KiB
Diff

From 7542fb08d2726606057c4283b3a454abb195a0f5 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 23 Sep 2019 09:26:41 +0100
Subject: [PATCH] kbuild: Allow .dtbo overlays to be built piecemeal
Before 4.20, it was possible to build an arbitrary overlay by copying
it to arm/boot/dts/overlays/mytest-overlay.dts and running:
make ARCH=arm overlays/mytest.dtbo
In 4.20 the .dtb build rules were centralised, requiring the dowstream
.dtbo build rules to be changed. They were, enough to support "make ...
dtbs", but not sufficiently to allow this ad-hoc, one-off building of
individual files.
Add the missing makefile rule to support this way of building.
See: https://github.com/raspberrypi/linux/issues/3250
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
Makefile | 3 +++
1 file changed, 3 insertions(+)
--- a/Makefile
+++ b/Makefile
@@ -1238,6 +1238,9 @@ ifneq ($(dtstree),)
%.dtb: include/config/kernel.release scripts_dtc
$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
+%.dtbo: prepare3 scripts_dtc
+ $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
+
PHONY += dtbs dtbs_install dt_binding_check
dtbs dtbs_check: include/config/kernel.release scripts_dtc
$(Q)$(MAKE) $(build)=$(dtstree)