[coreboot-gerrit] Patch merged into coreboot/master: rtc: Check update-in-progress bit

gerrit at coreboot.org gerrit at coreboot.org
Thu Nov 17 23:08:47 CET 2016


the following patch was just integrated into master:
commit 5a043fe08d84490356888d236ee7d190aa195217
Author: Marshall Dawson <marshalldawson3rd at gmail.com>
Date:   Sat Nov 5 18:31:33 2016 -0600

    rtc: Check update-in-progress bit
    
    While the real-time clock updates its count, values may not be correctly
    read or written.  On reads, ensure the UIP bit is clear which guarantees
    a minimum of 244 microseconds exists before the update begins.  Writes
    already avoid the problem by disabling the RTC count via the SET bit.
    
    Change-Id: I39e34493113015d32582f1c280fafa9e97f43a40
    Signed-off-by: Marshall Dawson <marshalldawson3rd at gmail.com>
    Reviewed-on: https://review.coreboot.org/17369
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin <adurbin at chromium.org>
    Reviewed-by: Paul Menzel <paulepanter at users.sourceforge.net>


See https://review.coreboot.org/17369 for details.

-gerrit



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