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| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2015-10-15 14:55:26 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2015-10-15 21:40:34 -0700 |
| commit | 3fa05020369579459898dd1d822f9a8a07ac3751 (patch) | |
| tree | 8a93e6cfc3945085b48e53f5bec7dd293a53bec3 | |
| parent | ccadc846510cef54ba17561cbddb5c7379a9941f (diff) | |
| download | chrome-ec-3fa05020369579459898dd1d822f9a8a07ac3751.tar.gz | |
glados / kunimitsu / chell: Slow EC-->PD I2C bus to 500 KHz
The stm32 (i2c slave) datasheet provides a 500 KHz timing configuration
for Fm+ when using an 8 MHz i2c clock.
BUG=chrome-os-partner:46188
BRANCH=None
TEST=Verify no i2c errors are seen on EC-->PD I2C bus.
Change-Id: I15d51a77d4739a769fdfa15bc3c1dae82f046d42
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/306183
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
| -rw-r--r-- | board/chell/board.c | 2 | ||||
| -rw-r--r-- | board/glados/board.c | 2 | ||||
| -rw-r--r-- | board/kunimitsu/board.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/board/chell/board.c b/board/chell/board.c index f2d739ad23..d6a78a1018 100644 --- a/board/chell/board.c +++ b/board/chell/board.c @@ -105,7 +105,7 @@ BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT); const struct i2c_port_t i2c_ports[] = { {"pmic", MEC1322_I2C0_0, 400, GPIO_I2C0_0_SCL, GPIO_I2C0_0_SDA}, {"muxes", MEC1322_I2C0_1, 400, GPIO_I2C0_1_SCL, GPIO_I2C0_1_SDA}, - {"pd_mcu", MEC1322_I2C1, 1000, GPIO_I2C1_SCL, GPIO_I2C1_SDA}, + {"pd_mcu", MEC1322_I2C1, 500, GPIO_I2C1_SCL, GPIO_I2C1_SDA}, {"batt", MEC1322_I2C3, 100, GPIO_I2C3_SCL, GPIO_I2C3_SDA}, }; const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports); diff --git a/board/glados/board.c b/board/glados/board.c index f11f5ba860..f26b1ff156 100644 --- a/board/glados/board.c +++ b/board/glados/board.c @@ -124,7 +124,7 @@ BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT); const struct i2c_port_t i2c_ports[] = { {"pmic", MEC1322_I2C0_0, 400, GPIO_I2C0_0_SCL, GPIO_I2C0_0_SDA}, {"muxes", MEC1322_I2C0_1, 400, GPIO_I2C0_1_SCL, GPIO_I2C0_1_SDA}, - {"pd_mcu", MEC1322_I2C1, 1000, GPIO_I2C1_SCL, GPIO_I2C1_SDA}, + {"pd_mcu", MEC1322_I2C1, 500, GPIO_I2C1_SCL, GPIO_I2C1_SDA}, {"sensors", MEC1322_I2C2, 400, GPIO_I2C2_SCL, GPIO_I2C2_SDA }, {"batt", MEC1322_I2C3, 100, GPIO_I2C3_SCL, GPIO_I2C3_SDA }, }; diff --git a/board/kunimitsu/board.c b/board/kunimitsu/board.c index 9c3223c89d..e3e9b071c6 100644 --- a/board/kunimitsu/board.c +++ b/board/kunimitsu/board.c @@ -116,7 +116,7 @@ BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT); const struct i2c_port_t i2c_ports[] = { {"batt", MEC1322_I2C0_0, 100, GPIO_I2C0_0_SCL, GPIO_I2C0_0_SDA}, {"muxes", MEC1322_I2C0_1, 100, GPIO_I2C0_1_SCL, GPIO_I2C0_1_SDA}, - {"pd_mcu", MEC1322_I2C1, 1000, GPIO_I2C1_SCL, GPIO_I2C1_SDA}, + {"pd_mcu", MEC1322_I2C1, 500, GPIO_I2C1_SCL, GPIO_I2C1_SDA}, {"sensors", MEC1322_I2C2, 400, GPIO_I2C2_SCL, GPIO_I2C2_SDA }, {"pmic", MEC1322_I2C3, 400, GPIO_I2C3_SCL, GPIO_I2C3_SDA }, }; |