diff options
| author | Lee, Shawn C <shawn.c.lee@intel.com> | 2019-02-17 18:50:54 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-09-12 21:59:13 +0000 |
| commit | 89267691e5cce30ef80fd1d1b1c360d912db30cf (patch) | |
| tree | 3e7a2c5cd0c9ea0c3f4c1869c455d8c1ce321a54 /include | |
| parent | 8f47673f345df83c67e930113043c45d1c698b44 (diff) | |
| download | chrome-ec-89267691e5cce30ef80fd1d1b1c360d912db30cf.tar.gz | |
anx7447: Add proper mux setting for DP alt mode and DTS mode (CCD)
This patch must be with removing the external 100k pull up/down
resistors on the Aux P/Aux N lines which avoids the 3.3V DC bias
voltage adds 0.8V pulse of aux channel to turn on TCPC internal
P-MOSFET that causes the signal effect on CCD communication.
BUG=b:124410548
BRANCH=None
TEST=Connect external monitor,usb device or CCD cable to type-c port0
Each type-c device should work normally.
Signed-off-by: Xin Ji <xji@analogixsemi.com>
Signed-off-by: Jack Lai <jack.lai@intel.com>
Signed-off-by: Scott Collyer <scollyer@google.com>
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-by: Zhuohao Lee <zhuohao@chromium.org>
Commit-Queue: Zhuohao Lee <zhuohao@chromium.org>
Tested-by: Zhuohao Lee <zhuohao@chromium.org>
Change-Id: Ic920c83232163292c3d6dbfce1b23a8e3a1c6b6e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1680664
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Commit-Queue: Scott Collyer <scollyer@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/config.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/config.h b/include/config.h index 81de017ae3..93d2b8401d 100644 --- a/include/config.h +++ b/include/config.h @@ -3781,6 +3781,15 @@ #undef CONFIG_USB_PD_TCPM_ANX7447_OCM_ERASE_COMMAND /* + * Use this config option to enable and internal pullup resistor on the AUX_N + * and internal pulldown resistor on the AUX_P line. Only use this config + * option if there are no external pu/pd resistors on these signals. This + * configuration should be used to avoid noise issues on the DDI1_AUX_N & + * DDI1_AUX_P signals (b/122873171) + */ +#undef CONFIG_USB_PD_TCPM_ANX7447_AUX_PU_PD + +/* * Use this option if the TCPC port controller supports the optional register * 18h CONFIG_STANDARD_OUTPUT to steer the high-speed muxes. */ |