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mb/google/fatcat/var/fatcat: Workaround for codec enable with FPS

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There is an issue where the codec enable signal is not working correctly
when FPS (Fingerprint Sensor) is enabled. This commit applies a
temporary workaround by using a dedicated GPIO pin for codec enable.

This allows the codec to function properly even when FPS is enabled,
preventing audio issues. A proper fix in hardware schematics will be
implemented in a future update.

BUG=b:390031369
TEST=Verified audio playback works with FPS being enabled.

Change-Id: I9883036b5e964cb55bd34c36398a501f69a8ecaa
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85992
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Pranava Y N <pranavayn@google.com>
Reviewed-by: Bora Guvendik <bora.guvendik@intel.com>
This commit is contained in:
Subrata Banik 2025-01-15 09:15:53 +05:30
commit f3f72bd198
1 changed files with 6 additions and 1 deletions
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7
src/mainboard/google/fatcat/variants/fatcat/fw_config.c
View file

@ -443,7 +443,12 @@ static const struct pad_config fp_disable_pads[] = {
PAD_NC(GPP_C15, NONE),
/* GPP_D01: MOD_TCSS1_TYP_A_VBUS_EN */
PAD_CFG_GPO(GPP_D01, 1, DEEP),
PAD_NC(GPP_E19, NONE),
/* FIXME: b/390031369
* use dedicated GPIO PIN for codec enable
* when FPS is enabled.
*/
/* GPP_E19: CODEC_EN */
PAD_CFG_GPO(GPP_E19, 1, PLTRST),
PAD_NC(GPP_E20, NONE),
PAD_NC(GPP_F14, NONE),
PAD_NC(GPP_F15, NONE),