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mb/google/nissa/var/rull: Enable early EC software sync for Rull

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Enable `VBOOT_EARLY_EC_SYNC` for rull device. This enables EC software
sync in romstage. This is useful to achieve full USB-PD negotiation
early in the boot flow. It eliminates a problem seen in rull devices
where PMC is wrongly configured in depthcharge during the EC-sync
scenario which prevents USB devices from getting detected when
connected via a self-powered USB hub.

BUG=b:386920751
TEST=Verify detection and booting to OS from USB drive connected to the
Servo v4 debugger (self-powered hub) during the EC-sync scenario.

Change-Id: Ie36794a8a2c0bcd4ba77f3ad844a30f28f59403f
Signed-off-by: Pranava Y N <pranavayn@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87104
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Jayvik Desai <jayvik@google.com>
This commit is contained in:
Pranava Y N 2025-04-02 16:47:35 +05:30 • committed by Subrata Banik
commit 91dbadf677
1 changed files with 1 additions and 1 deletions
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2
src/mainboard/google/brya/Kconfig
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@ -1100,7 +1100,7 @@ config VARIANT_DIR
default "meliks" if BOARD_GOOGLE_MELIKS
config VBOOT
select VBOOT_EARLY_EC_SYNC if !(BOARD_GOOGLE_BASEBOARD_NISSA || BOARD_GOOGLE_BASEBOARD_TRULO)
select VBOOT_EARLY_EC_SYNC if !(BOARD_GOOGLE_BASEBOARD_NISSA || BOARD_GOOGLE_BASEBOARD_TRULO) || BOARD_GOOGLE_RULL
select VBOOT_LID_SWITCH
config UART_FOR_CONSOLE