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mb/google/bluey: Conditionally enable FP rails in normal boot

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Only enable GPIO_EN_FP_RAILS when booting in LB_BOOT_MODE_NORMAL.

This avoids powering the FP MCU in non-normal boot modes such as
low battery or charging scenarios where FP functionality is not
required.

BUG=b:494962574
TEST=Verified by normal boot and check FP LED.

Change-Id: I7dca803fb3414f7b6b12eb9a8f284a3f1b7b6d87
Signed-off-by: Yang Wu <wuyang5@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91898
Reviewed-by: wen zhang <zhangwen6@huaqin.corp-partner.google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Yang Wu 2026-03-27 15:55:58 +08:00 • committed by Matt DeVillier
commit 6d3e13a33a
1 changed files with 4 additions and 2 deletions
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6
src/mainboard/google/bluey/romstage.c
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@ -180,8 +180,10 @@ void platform_romstage_main(void)
* when MAINBOARD_HAS_FINGERPRINT_VIA_SPI Kconfig is enabled.
* Requires >=200ms delay after its pin was driven low in bootblock.
*/
if (CONFIG(MAINBOARD_HAS_FINGERPRINT_VIA_SPI))
gpio_output(GPIO_EN_FP_RAILS, 1);
if (CONFIG(MAINBOARD_HAS_FINGERPRINT_VIA_SPI)) {
if (boot_mode == LB_BOOT_MODE_NORMAL)
gpio_output(GPIO_EN_FP_RAILS, 1);
}
}
void platform_romstage_postram(void)