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| author | Reka Norman <rekanorman@google.com> | 2022-04-06 20:34:07 +1000 |
|---|---|---|
| committer | Patrick Georgi <patrick@coreboot.org> | 2022-04-07 08:14:37 +0000 |
| commit | a6de947a6baada8a0633d86e0bf3abda3e80405c (patch) | |
| tree | 87fd9c92f74ba2be64df5d7dd411a11714326ed5 /src/device/root_device.c | |
| parent | e790f929bd6986958f89d0c20d55ff1bd13d2ec5 (diff) | |
mb/google/brya/var/nereid: Configure descriptor for either Type-C or HDMI
Some bytes in the descriptor need to be set differently for Type-C and
HDMI. To allow using a single firmware variant for both cases, update
the descriptor at runtime based on fw_config. This is a temporary
workaround while we find a better solution.
The byte values were determined by changing the following CSE strap and
comparing the generated descriptors:
Type-C: TypeCPort2Config = "No Thunderbolt"
HDMI: TypeCPort2Config = "DP Fixed Connection"
The default value before updating the descriptor is Type-C, but this was
chosen arbitrarily.
BUG=b:226848617
TEST=Type-C and HDMI both work on nereid with fw_config set correctly.
Change-Id: I2cc230e3bd35816c81989ae7e01df5d2c152062e
Signed-off-by: Reka Norman <rekanorman@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63366
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Sam McNally <sammc@google.com>
Diffstat (limited to 'src/device/root_device.c')
0 files changed, 0 insertions, 0 deletions