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| author | Chen Lin Z <lin.z.chen@intel.com> | 2024-10-15 13:51:12 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-11-13 09:05:56 +0000 |
| commit | df6b43f61b074a9c8c09471b586561ca35370408 (patch) | |
| tree | 942109f8cfcc47c9f2fe6258e4c330bc1dd4f864 /Conf | |
| parent | f1674e665c3de23135009f5dd645b8af1f7d0379 (diff) | |
| download | edk2-df6b43f61b074a9c8c09471b586561ca35370408.tar.gz edk2-df6b43f61b074a9c8c09471b586561ca35370408.tar.bz2 edk2-df6b43f61b074a9c8c09471b586561ca35370408.zip | |
PcAtChipsetPkg: Use DV bit to stop the RTC first when changing the time
Legacy BIOS design sets only the Update Cycle Inhibit (SET) bit when
changing the RTC time. Update Cycle Inhibit Bit may not be supported
by the backend device (Common I2C RTC device). It could add Division
Chain Select (DV) bit to stop the RTC first (Write to 0x07), Changing
the RTC time and then Set the DV bit back.
Signed-off-by: Di Zhang <di.zhang@intel.com>
Diffstat (limited to 'Conf')
0 files changed, 0 insertions, 0 deletions