From: Peng Fan <[email protected]> Check the pd-disable property in the connector node during tcpm_post_probe(). When set, skip tcpm_port_init() and tcpm_poll_event() so the TCPCI driver is probed (I2C accessible, ops available) but the PD state machine does not run.
This is needed for dual-role data ports where running the state machine during probe would disrupt an already-established USB connection. Signed-off-by: Peng Fan <[email protected]> --- drivers/usb/tcpm/tcpm.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/usb/tcpm/tcpm.c b/drivers/usb/tcpm/tcpm.c index 1ce46118fea..32c67b8886e 100644 --- a/drivers/usb/tcpm/tcpm.c +++ b/drivers/usb/tcpm/tcpm.c @@ -2306,8 +2306,15 @@ static void tcpm_poll_event(struct udevice *dev) int tcpm_post_probe(struct udevice *dev) { - int ret = tcpm_port_init(dev); + const struct dm_tcpm_ops *drvops = dev_get_driver_ops(dev); + ofnode connector; + int ret; + + ret = drvops->get_connector_node(dev, &connector); + if (!ret && ofnode_read_bool(connector, "pd-disable")) + return 0; + ret = tcpm_port_init(dev); if (ret < 0) { dev_err(dev, "failed to tcpm port init\n"); return ret; -- 2.51.0
