diff options
| author | Diana Z <dzigterman@chromium.org> | 2019-01-23 11:03:48 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2019-02-14 05:27:31 -0800 |
| commit | 7c20200967b367a8996866f51868feec483f1429 (patch) | |
| tree | d0ddb90a4cec1755e8e66e987449e32329bed8a5 | |
| parent | 16d77d2f44cf2c145625371c35f876931a00a552 (diff) | |
| download | chrome-ec-7c20200967b367a8996866f51868feec483f1429.tar.gz | |
Casta: Tune USB mux registers
Casta is currently having issues with its Rx measurement on port 0.
With this change, the mux registers on the PS8751 for port 0 should be
tuned every time the TCPC comes out of low power mode.
BUG=b:122987819
BRANCH=octopus
TEST=builds, loaded onto casta and confirmed register 0xE7 read 0x40
from the ec console
Change-Id: Ieb884eeaddc418f97ace69b9db0041d50fe2b5d9
Signed-off-by: Diana Z <dzigterman@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1430953
Commit-Ready: YongBeum Ha <ybha@samsung.com>
Tested-by: YongBeum Ha <ybha@samsung.com>
Reviewed-by: Jett Rink <jettrink@chromium.org>
| -rw-r--r-- | baseboard/octopus/variant_usbc_standalone_tcpcs.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/baseboard/octopus/variant_usbc_standalone_tcpcs.c b/baseboard/octopus/variant_usbc_standalone_tcpcs.c index d2da4595bb..fbae3e70d0 100644 --- a/baseboard/octopus/variant_usbc_standalone_tcpcs.c +++ b/baseboard/octopus/variant_usbc_standalone_tcpcs.c @@ -53,11 +53,21 @@ const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_COUNT] = { /******************************************************************************/ /* USB-C MUX Configuration */ +#if defined(VARIANT_OCTOPUS_TCPC_0_PS8751) +static int ps8751_tune_mux(int port) +{ + /* Tune USB mux registers for casta's port 0 Rx measurement */ + mux_write(port, PS8XXX_REG_MUX_USB_C2SS_EQ, 0x40); + return EC_SUCCESS; +} +#endif + struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_COUNT] = { [USB_PD_PORT_TCPC_0] = { #if defined(VARIANT_OCTOPUS_TCPC_0_PS8751) .driver = &tcpci_tcpm_usb_mux_driver, .hpd_update = &ps8xxx_tcpc_update_hpd_status, + .board_init = &ps8751_tune_mux, #else .driver = &anx7447_usb_mux_driver, .hpd_update = &anx7447_tcpc_update_hpd_status, |