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mb/google/hatch: Unlock GPIO pads 

GPP_A12 is being used as FPMCU_RST in hatch. This GPIO is being padlocked in
FSP and cannot used in kernel. Hence unlock the GPIO pads to export this pin
in kernel to be used as FPMCU_RST.

BUG=b:128686027
BRANCH=None
TEST=Read Pad Configuration Lock (PADCFGLOCK_GPP_A_0) register.
localhost /sys/class/gpio # iotools mmio_read32 0xfd6e0080
0x00000000
localhost /sys/class/gpio # echo 212 > export

Change-Id: Ie0439956e6c8e386435e535665ccaf2ab82adeb0
Signed-off-by: Krishna Prasad Bhat <krishna.p.bhat.d@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32126
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Krishna Prasad Bhat 2019-03-30 10:42:23 +05:30 committed by Patrick Georgi
parent dffa8d05e3
commit 847289d49e
1 changed files with 2 additions and 0 deletions
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2
src/mainboard/google/hatch/variants/baseboard/devicetree.cb
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@ -73,6 +73,8 @@ chip soc/intel/cannonlake
register "DdiPortBHpd" = "1"
register "DdiPortCHpd" = "1"
register "tcc_offset" = "10" # TCC of 90C
# Unlock GPIO pads
register "PchUnlockGpioPads" = "1"
register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC2)" # Type-C Port 0
register "usb2_ports[1]" = "USB2_PORT_TYPE_C(OC2)" # Type-C Port 1