Fixes a pmc_mux port mapping error introduced in coreboot
commit 4fa8354
Mithrax and felwinter do not have sequential mux_conn[X] to connY
mappings which led to the kernel subsystem linking between Type C
connectors and USB muxes to be incorrect. The previous patch
attempted to fix this by changing the custom_pld layout. However
this broke USB usage except for charging.
This patch reverts the custom_pld layout and instead changes the pmc
hidden and tcss_xhci port mappings to match the hardware layout.
BUG=b:352512335 b:329657774 b:121287022 b:321051330 b:204230406
TEST=emerge-${BOARD} coreboot
TEST=Manually check that usb-role-switches are mapped to the correct
port.
Attach USB 3 A to C cable from development machine to left port of
DUT.
Attach nothing to right-hand port.
ectool commands below are only for felwinter as a workaround for
devices without a firmware patch to connect superspeed lines.
ectool usbpd 0 none
ectool usbpd 0 usb
ectool usbpd 1 none
ectool usbpd 1 usb
echo host > /sys/class/typec/port0/usb-role-switch/role (should
succeed)
ls -l /sys/class/typec/port0/usb-role-switch (note CONX-role-switch)
echo host > /sys/class/usb_role/CONX-role-switch/role (should succeed)
echo host > /sys/class/typec/port1/usb-role-switch/role (should fail
as no cable attached)
ls -l /sys/class/typec/port1/usb-role-switch (note CONY-role-switch)
echo host > /sys/class/usb_role/CONY-role-switch/role (should fail
as no cable attached)
BRANCH=firmware-brya-14505.B
Change-Id: Iebd259842d3affa259069cd776b46759c1c60712
Signed-off-by: Emilie Roberts <hadrosaur@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83472
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
e638a113fa