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authorHung-Te Lin <hungte@chromium.org>2019-04-18 17:31:55 +0800
committerJulius Werner <jwerner@chromium.org>2019-04-22 19:56:23 +0000
commit69eae2762fc34f8303e8a41065df437295262586 (patch)
treeba96779af9b458c4e60bb12ed1e2fb24a304fc25 /Documentation/lessons/lesson1.md
parente3f5f2155a75687ab50d53c49977748f4cecdb2b (diff)
board/kukui: Support ADC value for NC
When the components like LCM ID are not installed (i.e., NC), ADC will return some value with much larger variation from standard value (out of the tolerance we set). To support that, we should check tolerance only on non-NC voltages. Also improve the error messages so we can see the ADC raw values instead of simple assertion error (which makes debugging more difficult since we have to build another firmware image just to print the values). BUG=None TEST=Booted on Kukui and got correct SKU ID for NC LCMID. BRANCH=None Change-Id: I8d00956e0e3b48ddbcaa505dd3ade24720c3b4ad Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32353 Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: You-Cheng Syu <youcheng@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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