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configs: e850-96: Disable CONFIG_DEFAULT_FDT_FILE

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Linux kernel should use some separate device tree obtained from another
source anyway. For example the dtb file can be read from /boot directory
in eMMC rootfs partition, either by GRUB or U-Boot. Using U-Boot's
device tree blob to provide it to the kernel (when
CONFIG_DEFAULT_FDT_FILE is set and nobody else overrides this choice)
might lead to undesired effects when booting the OS. For example, if a
user sets "dr_mode" property to "host" value in U-Boot's dts to enable
USB host capabilities in U-Boot, it might confuse usb-conn-gpio driver
in Linux kernel later like this:

    platform connector: deferred probe pending: usb-conn-gpio:
    failed to get role switch

Disable CONFIG_DEFAULT_FDT_FILE option to avoid any possible confusion.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Sam Protsenko
2025-08-06 17:27:08 -05:00
committed by Minkyu Kang
parent 75f75832d0
commit e52e4320ba
2 changed files with 1 additions and 2 deletions
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2
board/samsung/e850-96/e850-96.env
View File

@@ -5,7 +5,7 @@ fdt_addr_r=0x8c000000
scriptaddr=0x8c100000
pxefile_addr_r=0x8c200000
ramdisk_addr_r=0x8c300000
fdtfile=CONFIG_DEFAULT_FDT_FILE
fdtfile=exynos/exynos850-e850-96.dtb
dfu_alt_info=
rawemmc raw 0 0x747c000 mmcpart 1;

1
configs/e850-96_defconfig
View File

@@ -19,7 +19,6 @@ CONFIG_EFI_RUNTIME_UPDATE_CAPSULE=y
CONFIG_EFI_CAPSULE_ON_DISK=y
CONFIG_EFI_CAPSULE_FIRMWARE_RAW=y
CONFIG_BOOTSTD_FULL=y
CONFIG_DEFAULT_FDT_FILE="exynos850-e850-96.dtb"
# CONFIG_DISPLAY_CPUINFO is not set
# CONFIG_BOARD_INIT is not set
CONFIG_BOARD_LATE_INIT=y