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| author | Jett Rink <jettrink@chromium.org> | 2019-07-08 14:11:32 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-07-09 17:20:41 +0000 |
| commit | 857e3c94d346bb78ff1cfadecef9749f921b6b35 (patch) | |
| tree | 64935ffe19ba4dbdd995a595be873f36df1dd6fe | |
| parent | 18244d452469b5e890523f24767fba63db5cbf8d (diff) | |
| download | chrome-ec-stabilize-12239.92.B.tar.gz | |
arcada: lower i2c bus speed to 400kHzstabilize-12239.92.Bstabilize-12239.89.Bstabilize-12239.67.Bstabilize-12239.46.Brelease-R76-12239.B
The sensors on the i2c line do not operate reliably
at 1Mhz i2c bus speed. Lower to 400kHz
BRANCH=75,76
BUG=b:136676970
TEST=verify that i2c bus speed when from ~1Mhz to ~400kHz after
this change with an oscilloscope.
Change-Id: Ie970f76fe7408de17f92bfc9f22a951b635fd278
Signed-off-by: Jett Rink <jettrink@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1691309
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
(cherry picked from commit 48765c68fc17b84902afc0a3bd5926e5721e669f)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1693124
| -rw-r--r-- | board/arcada_ish/board.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/board/arcada_ish/board.c b/board/arcada_ish/board.c index 8d1566723e..c80e070647 100644 --- a/board/arcada_ish/board.c +++ b/board/arcada_ish/board.c @@ -26,7 +26,7 @@ const struct i2c_port_t i2c_ports[] = { { .name = "sensor", .port = I2C_PORT_SENSOR, - .kbps = 1000 + .kbps = 400, }, }; const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports); |