diff options
| author | Namyoon Woo <namyoon@google.com> | 2020-04-14 23:31:51 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-05-29 22:10:41 +0000 |
| commit | 5a60b3b215125e8d2c145e17867fcfaaae682dcd (patch) | |
| tree | fc720d5911d6c67ba177cf842cdcb3dbc2c5e4d9 /board | |
| parent | 57e170c71339961ea0d411e3ffa7c6d8e50c8ea3 (diff) | |
| download | chrome-ec-5a60b3b215125e8d2c145e17867fcfaaae682dcd.tar.gz | |
apply INT_AP_L extension on I2CS interface
This patch applies INT_AP_L extension on I2CS. It uses
GPIO_MONITOR_I2CS_SDA to detect a transaction start during INT_AP_L
assertion and to deassert INT_AP_L.
BUG=b:148691139
TEST=None
Signed-off-by: Namyoon Woo <namyoon@google.com>
Change-Id: Iedd59b488dfdfaaf71dd71eda6437f1a9402d3c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2150517
Tested-by: Namyoon Woo <namyoon@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Commit-Queue: Namyoon Woo <namyoon@chromium.org>
Diffstat (limited to 'board')
| -rw-r--r-- | board/cr50/gpio.inc | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/board/cr50/gpio.inc b/board/cr50/gpio.inc index 47c35fb2d2..e527f7815b 100644 --- a/board/cr50/gpio.inc +++ b/board/cr50/gpio.inc @@ -110,6 +110,15 @@ GPIO_INT(DETECT_TPM_RST_L_ASSERTED, PIN(1, 4), GPIO_INT_FALLING, tpm_rst_asserted) /* + * A GPIO to sample the current state of the I2CS SDA line, allowing to detect + * the 'wedged I2C bus' condition. + * + * Also, it works to detect an I2C transaction during extended INT_AP_L + * assertion. + */ +GPIO_INT(MONITOR_I2CS_SDA, PIN(1, 6), GPIO_INT_LOW, i2cs_sda_isr) + +/* * These GPIOs are to enable or disable EC-CR50 communication. * NOTE: If these are changed, you must update the information in board.c * and ec_comm.c @@ -188,12 +197,6 @@ GPIO(STRAP_B1, PIN(1, 15), GPIO_INPUT) GPIO(UNWEDGE_I2CS_SCL, PIN(1, 5), GPIO_OUT_HIGH) /* - * A GPIO to sample the current state of the I2CS SDA line, allowing to detect - * the 'wedged I2C bus' condition. - */ -GPIO(MONITOR_I2CS_SDA, PIN(1, 6), GPIO_INPUT) - -/* * If you change the names of EN_PP3300_INA_L, I2C_SCL_INA, or I2C_SDA_INA, * you also need to update the usage in closed_source_set1.c */ |