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| author | Sam Hurst <shurst@google.com> | 2020-03-24 16:46:14 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-04-02 09:40:09 +0000 |
| commit | 28f07760f384789a6a28801c0c42d9d61af2f99b (patch) | |
| tree | 6a3b98e52fa4fa3d49909be781df1c7f77c92a45 /include/system.h | |
| parent | f648164f18293a2b3e2c5e0b766a8edef787ee9d (diff) | |
| download | chrome-ec-28f07760f384789a6a28801c0c42d9d61af2f99b.tar.gz | |
TCPMv2: Restore PD state after Sysjump
When a PD explicit contract is negotiated in RO,
the contract is maintained while performing a
sysjump to RW. This is done by serializing
the PD Power, Data, and VCONN Roles, along with
the explicit contract flag. After jumping to RW,
deserialization is performed by restoring the
power roles and setting the explicit contract
flag.
BUG=b:152350558,b:152027807,b:152967274
BRANCH=none
TEST=make -j buildall
Manual tests:
Used total phase to verify that charging voltage
was maintained across sysjump from RO to RW and
that DP was reestablished when a dock was used.
Tested that Kohaku booted properly without a
battery and a charger connected to port 0. This
test was repeated with a charger connected to port 1.
Signed-off-by: Sam Hurst <shurst@google.com>
Change-Id: I349c41f2279e9af9830564d44ac73ad8435f1f80
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2119131
Tested-by: Sam Hurst <shurst@google.com>
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
Commit-Queue: Denis Brockus <dbrockus@chromium.org>
Diffstat (limited to 'include/system.h')
| -rw-r--r-- | include/system.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/system.h b/include/system.h index ced5446eee..03a2c15238 100644 --- a/include/system.h +++ b/include/system.h @@ -355,6 +355,9 @@ enum system_bbram_idx { SYSTEM_BBRAM_IDX_TRY_SLOT, }; +/* Maximum number of bbram indexes allotted for PD port state data */ +#define MAX_SYSTEM_BBRAM_IDX_PD_PORTS 3 + /** * Get/Set byte in battery-backed storage. * |