diff options
| author | Alec Berg <alecaberg@chromium.org> | 2014-08-28 17:33:06 -0700 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-08-29 21:55:40 +0000 |
| commit | 390498a9ff7f85095a14c9ede8f3dedfaf677e64 (patch) | |
| tree | b204ac8012296b82cfd07918f8474304e25450cc | |
| parent | 61f2327f072b4600b1b5880da8a858ce528d59d0 (diff) | |
| download | chrome-ec-390498a9ff7f85095a14c9ede8f3dedfaf677e64.tar.gz | |
samus: automatically attempt to unwedge i2c bus 0
Define SCL and SDA for I2C port 0 so that it is automatically unwedged
when it detects the bus has been wedged. Note, we can currently only
use this on one I2C port.
BUG=chrome-os-partner:31581
BRANCH=samus
TEST=load onto samus p2b that is having i2c port 0 problems and
wait for the bus to wedge, then verify it automatically unwedges:
[868.755442 I2C0 Addr:16 bad status 0x41, SCL=1, SDA=0]
[868.756013 I2C unwedge called with SDA held low]
Change-Id: I0ffb6a725af97155f734e2570574144ba4044f22
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/215396
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
| -rw-r--r-- | board/samus/board.c | 2 | ||||
| -rw-r--r-- | board/samus/gpio.inc | 3 |
2 files changed, 4 insertions, 1 deletions
diff --git a/board/samus/board.c b/board/samus/board.c index b536143279..7a8ca30229 100644 --- a/board/samus/board.c +++ b/board/samus/board.c @@ -123,7 +123,7 @@ BUILD_ASSERT(ARRAY_SIZE(fans) == CONFIG_FANS); /* I2C ports */ const struct i2c_port_t i2c_ports[] = { - {"batt_chg", 0, 100}, + {"batt_chg", 0, 100, GPIO_I2C0_SCL, GPIO_I2C0_SDA}, {"lightbar", 1, 400}, {"thermal", 5, 100}, }; diff --git a/board/samus/gpio.inc b/board/samus/gpio.inc index c5f1e6070e..d090943f30 100644 --- a/board/samus/gpio.inc +++ b/board/samus/gpio.inc @@ -96,6 +96,9 @@ GPIO(USB2_CTL3, D, 4, GPIO_OUT_LOW, NULL) /* USB charger port 2 CTL3 GPIO(USB2_ENABLE, D, 5, GPIO_OUT_HIGH, NULL) /* USB charger port 2 enable */ GPIO(USB2_ILIM_SEL_L, D, 6, GPIO_OUT_HIGH, NULL) /* USB charger port 2 ILIM_SEL output */ +GPIO(I2C0_SCL, B, 2, GPIO_ODR_HIGH, NULL) /* I2C port 1 SCL */ +GPIO(I2C0_SDA, B, 3, GPIO_ODR_HIGH, NULL) /* I2C port 1 SDA */ + ALTERNATE(A, 0x03, 1, MODULE_UART, 0) /* UART0 */ ALTERNATE(A, 0x40, 3, MODULE_I2C, 0) /* I2C1 SCL */ ALTERNATE(A, 0x80, 3, MODULE_I2C, GPIO_OPEN_DRAIN) /* I2C1 SDA */ |