Hello everyone We finally found a solution to the problem we had with the PTN5110 Chip and the Kernel Module tcpci that manages this chip in 5.15.xx Kernel. NXP Patched their Kernel a while ago (https://source.codeaurora.org/external/imx/linux-imx/commit/drivers/usb/typec/tcpm/tcpci.c?h=lf-5.15.y&id=2a263f918b25725e0434afa9ff3b83b1bc18ef74) and we reimplemented the NXP patch for the Kernel 5.15.91. I attached my reworked patch below: diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index 5340a3a3a81b..0d715e091b78 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -628,6 +628,9 @@ static int tcpci_init(struct tcpc_dev *tcpc) if (ret < 0) return ret; + /* Clear fault condition */ + regmap_write(tcpci->regmap, TCPC_FAULT_STATUS, 0x80); + if (tcpci->controls_vbus) reg = TCPC_POWER_STATUS_VBUS_PRES; else @@ -644,7 +647,8 @@ static int tcpci_init(struct tcpc_dev *tcpc) reg = TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_FAILED | TCPC_ALERT_TX_DISCARDED | TCPC_ALERT_RX_STATUS | - TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_CC_STATUS; + TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_CC_STATUS | + TCPC_ALERT_V_ALARM_LO | TCPC_ALERT_FAULT; if (tcpci->controls_vbus) reg |= TCPC_ALERT_POWER_STATUS; /* Enable VSAFE0V status interrupt when detecting VSAFE0V is supported */ @@ -728,6 +732,13 @@ irqreturn_t tcpci_irq(struct tcpci *tcpci) tcpm_vbus_change(tcpci->port); } + /* Clear the fault status anyway */ + if (status & TCPC_ALERT_FAULT) { + regmap_read(tcpci->regmap, TCPC_FAULT_STATUS, &raw); + regmap_write(tcpci->regmap, TCPC_FAULT_STATUS, + raw | TCPC_FAULT_STATUS_MASK); + } + if (status & TCPC_ALERT_RX_HARD_RST) tcpm_pd_hard_reset(tcpci->port);
