machine/imx93-evk: Allow mainline BSP to be selected

The i.MX 93 machine include sets IMX_DEFAULT_BSP = "nxp" in a way that
overrides the "mainline" default in imx-base.inc, and also overrides any
user preference selected by e.g. enabling the bsp/fslc fragment. This is
despite some level of mainline support being available.

Instead of the hard override, make "nxp" a soft default, which allows
mainline to be selected if desired.

Signed-off-by: Daniel Drake <ddrake@baylibre.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/conf/machine/include/imx93-evk.inc b/conf/machine/include/imx93-evk.inc
index 9e9108d99..18f7fc293 100644
--- a/conf/machine/include/imx93-evk.inc
+++ b/conf/machine/include/imx93-evk.inc
@@ -1,5 +1,9 @@
 MACHINEOVERRIDES =. "mx93:"
 
+# To avoid unexpected changes for existing users, maintain the historical
+# default of the vendor BSP, despite mainline support being available.
+IMX_DEFAULT_BSP ?= "nxp"
+
 require conf/machine/include/imx-base.inc
 require conf/machine/include/arm/armv8-2a/tune-cortexa55.inc
 
@@ -49,5 +53,3 @@ IMX_BOOT_SEEK = "32"
 
 # We have to disable SERIAL_CONSOLE due to auto-serial-console
 SERIAL_CONSOLES = "115200;ttyLP0"
-
-IMX_DEFAULT_BSP = "nxp"