[PATCH v2] configs: colibri-imx7*: set 'fdtfile' generically in PREBOOT

[Ernest Van Hoecke <ernestvanhoecke@gmail.com>]

From: Ernest Van Hoecke <ernest.vanhoecke@toradex.com>

In TEZI (Toradex Easy Installer), we use one U-Boot binary for both our
NAND and eMMC Colibri iMX7 modules. Currently, CONFIG_PREBOOT sets the
environment variable 'fdtfile' depending on which defconfig was used,
adding the '-emmc' variant for the emmc defconfig. Since we always build
the TEZI recovery U-Boot with the standard (non-emmc) defconfig, fdtfile
has to be overwritten later or it will be wrong there.

By using '$variant', the fdtfile var is properly constructed at run time
for both the NAND and eMMC variants, and we do not have to worry about
setting fdtfile again when building the recovery TEZI U-Boot.

This also synchronizes these configs with how we handle the iMX6ULL.

Fixes: 327381e8b57c ("colibri_imx7: use preboot for fdtfile evaluation")
Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com>
---
v2: Do not erroneously replace the '${soc}' variable with imx7
v1: https://lore.kernel.org/u-boot/20251118123056.1124089-1-ernestvanhoecke@gmail.com/
---
 configs/colibri_imx7_defconfig      | 2 +-
 configs/colibri_imx7_emmc_defconfig | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/configs/colibri_imx7_defconfig b/configs/colibri_imx7_defconfig
index 5a415120bead..2a3cb84c3b6f 100644
--- a/configs/colibri_imx7_defconfig
+++ b/configs/colibri_imx7_defconfig
@@ -22,7 +22,7 @@ CONFIG_BOOTDELAY=1
 CONFIG_OF_ENV_SETUP=y
 CONFIG_BOOTCOMMAND="run ubiboot ; echo ; echo ubiboot failed ; run distro_bootcmd;"
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile ${soc}-colibri-${fdt_board}.dtb "
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile ${soc}-colibri${variant}-${fdt_board}.dtb "
 CONFIG_SYS_PBSIZE=544
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_BOARDINFO is not set
diff --git a/configs/colibri_imx7_emmc_defconfig b/configs/colibri_imx7_emmc_defconfig
index bae43fe45aa7..a95a3214d0c8 100644
--- a/configs/colibri_imx7_emmc_defconfig
+++ b/configs/colibri_imx7_emmc_defconfig
@@ -19,7 +19,7 @@ CONFIG_FIT_VERBOSE=y
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_BOOTDELAY=1
 CONFIG_USE_PREBOOT=y
-CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile ${soc}-colibri-emmc-${fdt_board}.dtb"
+CONFIG_PREBOOT="test -n ${fdtfile} || setenv fdtfile ${soc}-colibri${variant}-${fdt_board}.dtb"
 CONFIG_SYS_PBSIZE=544
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_BOARDINFO is not set
-- 
2.43.0