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Mon, 20 Feb 2023 16:45:32 +0000 From: Christian Bach To: Greg KH CC: "stable@vger.kernel.org" , "regressions@lists.linux.dev" , "linux@roeck-us.net" , "linux-usb@vger.kernel.org" , =?big5_tw?b?Y3lfaHVh?= =?big5_tw?b?bmcotsCx0q3sKQ==?= Subject: AW: tcpci module in Kernel 5.15.74 with PTN5110 not working correctly Thread-Topic: tcpci module in Kernel 5.15.74 with PTN5110 not working correctly Thread-Index: AdjoVYnpyrmyLmxITSiX1bJ23H/1egAFm5rgAAClgwAXNteHcA== Date: Mon, 20 Feb 2023 16:45:32 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: de-DE X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=scs.ch; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: ZR0P278MB0773:EE_|GV0P278MB0830:EE_ x-ms-office365-filtering-correlation-id: a2907e9e-f866-4cb0-7a62-08db1361e1b1 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: IAxWLsPPKy3EVcLzPZ4mVSfVFE9yyO6VHtwMtN/+Nu4doS8cIL/stWtB+N7Pn9YjHYhoe5KCIxeS1QPofIG4HgbXpysuEhFCZxijOR4X0+Y/YoMZTA5uZxVDPAOFNeq93n1rShfL/CjhTN4MlbdwpwFAPPApMNYA7RK7D+XHgvCI4yt3EC6KeIAyja0Ot2kesJo19vusn5oF6JjorqzOaFcXTTZwLGnZwHTJeYOvGgchwAS/yUZET8yp63GPnoArP8gB5JTm4xHkIQWqj70pEoXs9cPEWdzBRk9+cOEpJXsFkStzAy8YhcmJigKysY1bepDRh+RK+BjU4+ll030/aLD5kWAL2aL7ViOBRgIpaT2CUaU8wxrj1/k0URPHh1Wp2obw+4+hJ5t7Swgl8GE/K8dIG36/l2yNZ0RJoJLWSIHgVlufom1e7eEhwSpJSgkjZSxSDPxw7WoUMu9Jw8G7TwielLG/h78zavDgeb0vko7uwgtbCUtVYrNil1MLhhjtKFc0Sse4JGaqH5VElUjTqt8iz5ZkvnkAb3WaGI9owBTkKl6uBF7VKCaEl+UWwu4Na1Oc4/rjIaFMjlWoAhPfHQslOUiG44rU1oLff8bgqIv3ruCXCmpVlr+qGAxt9Blx2Era2D9qM0BN5AOMAKqwglxcPvBsxb9ocdd4Wrkm1OiCAz41eXHdoTq5SuMuvxRt x-forefront-antispam-report: CIP:255.255.255.255; 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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);