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| author | Karthikeyan Ramasubramanian <kramasub@google.com> | 2021-04-14 14:25:49 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-04-18 20:42:13 +0000 |
| commit | 74e2c980305e90ff61b30b7cca37670669c3a57d (patch) | |
| tree | 8e6e5039116bb810b0cec3890f850afee76cf482 /Documentation/releases/coreboot-4.2-relnotes.md | |
| parent | 63fc23685619864d16e7925329ac2e8cffe6767e (diff) | |
| download | coreboot-74e2c980305e90ff61b30b7cca37670669c3a57d.tar.xz | |
mb/google/guybrush/var/guybrush: Add GPIO override table
EN_SPKR is routed to SD pin in the ALC1019 speaker amplifier. The
concerned pin has a voltage rating of 1.8V whereas the EN_SPKR GPIO has
a voltage rating of 3.3 V. The schematics has been updated to bridge the
gap. So enable the speaker amplifier by default and add a gpio override
table to disable the speakers before board version 2.
Also update the codec ACPI HID name for the kernel machine driver to
probe the codec successfully.
BUG=b:182960979
TEST=Build and boot to OS in guybrush. Ensure that the GPIO output state
is high.
Change-Id: I32b29bfae9bc94b5119b33a535d8bc825ef89445
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52355
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Mathew King <mathewk@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'Documentation/releases/coreboot-4.2-relnotes.md')
0 files changed, 0 insertions, 0 deletions