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| author | Eric Yilun Lin <yllin@chromium.org> | 2020-05-26 14:20:28 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-05-27 01:49:35 +0000 |
| commit | d7fbb75271a8ec4ca6d84e08bbac37e2ed6cc4e9 (patch) | |
| tree | 39627e48cd909a85a793e1391f2f21fa97102c6d /board/servo_v4 | |
| parent | 97ba1d791eb7855ad6652d36a79325268fb28951 (diff) | |
| download | chrome-ec-d7fbb75271a8ec4ca6d84e08bbac37e2ed6cc4e9.tar.gz | |
servo_v4: use PD_PREFER_HIGH_VOLTAGE for PDO selection logic
Define PDO selection logic for SourceCap PDO collection.
On a 45W PD charger, it might provide PDOs with 15V/3A and 20V/2.25A.
In this case, pd_find_pdo_index() would always prefer 15V/3A rather than
20V/2.25A and such that the 20V PDO will be disappeared when servo-v4
advertise the SrcCap. We define PD_PREFER_HIGH_VOLTAGE so that all the
PDOs could be advertised by servo-v4.
BUG=b:147021699
TEST=plug treeya 45W charger, and see servo-v4 advertise 20V/2.25A PDO
BRANCH=servo-v4
Change-Id: I3bd071161679bae98be17fd6b53a24e258d9c15c
Signed-off-by: Eric Yilun Lin <yllin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2215391
Reviewed-by: Wai-Hong Tam <waihong@google.com>
Commit-Queue: Wai-Hong Tam <waihong@google.com>
Diffstat (limited to 'board/servo_v4')
| -rw-r--r-- | board/servo_v4/board.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/board/servo_v4/board.h b/board/servo_v4/board.h index b89df7f9f4..8654ad901e 100644 --- a/board/servo_v4/board.h +++ b/board/servo_v4/board.h @@ -150,6 +150,15 @@ #define PD_MAX_POWER_MW 60000 #define PD_MAX_CURRENT_MA 3000 #define PD_MAX_VOLTAGE_MV 20000 +/* + * Define PDO selection logic for SourceCap. + * On a 45W PD charger, it might provide PDOs with 15V/3A and 20V/2.25A. + * In this case, pd_find_pdo_index() would always prefer 15V/3A rather than + * 20V/2.25A and such that the 20V PDO will be disappeared when servo-v4 + * advertise the SrcCap. We define PD_PREFER_HIGH_VOLTAGE so that all the + * PDOs could be advertised by servo-v4. + */ +#define PD_PREFER_HIGH_VOLTAGE /* * Allow dangerous commands all the time, since we don't have a write protect |