Only Cr50 versions starting at 0.5.5 support long IRQ pulses, so this
feature is enabled based on the value of the board_cfg register (see
CB:61722).
However, Ti50 versions below 0.0.15 don't support the board_cfg
register, and trying to access it will cause I2C errors (see CB:63011).
Also, all Ti50 versions only support long IRQ pulses. Therefore, add a
workaround to force enable long IRQ pulses for boards using Ti50
versions under 0.0.15, instead of enabling it based on board_cfg. This
workaround will be removed once all Ti50 stocks are updated to 0.0.15 or
higher.
BUG=b:225941781
TEST=Boot nivviks and nereid to OS with Ti50 0.0.14 and check there are
none of these I2C errors:
[ERROR] I2C stop bit not received
[ERROR] cr50_i2c_read: Address write failed
[ERROR] cr50_i2c_tis_status: Failed to read status
Change-Id: Iaba71461d8ec79e8d6efddbd505339cdf1176485
Signed-off-by: Reka Norman <rekanorman@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63160
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
f08e3bb516