Change in coreboot[master]: mb/google/volteer: Pull up GPP_D16 instead of driving it

[Caveh Jalali (Code Review)]

Hello build bot (Jenkins), Tim Wawrzynczak, Duncan Laurie, Nick Vaccaro,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/44116

to look at the new patch set (#2).

Change subject: mb/google/volteer: Pull up GPP_D16 instead of driving it
......................................................................

mb/google/volteer: Pull up GPP_D16 instead of driving it

The latest realtek RTS5261 SD daughterboard exposes the PRSNT# pin to
GPP_D16 but there is a RTS5261 requirement to pull up this pin and not
drive it at power on. We can meet this requirement without breaking
other boards by changing GPP_D16 to be a no-connect with an internal
pull up. Other boards use this signal as an enable input, so changing
this to pull up is OK.

BUG=b:162722965
TEST=Verified RTS5261 and GL9755 daughterboards enumerate on PCI and
    can read SD cards.

Change-Id: I096d76ec12b7c3afaf02e621fd301b6704913d5d
Signed-off-by: Caveh Jalali 
---
M src/mainboard/google/volteer/variants/volteer/gpio.c
M src/mainboard/google/volteer/variants/volteer2/gpio.c
2 files changed, 2 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/16/44116/2