From a43f9c974a96e7b24dffa56ab1dc30e68e511690 Mon Sep 17 00:00:00 2001 From: Frank Wang Date: Sun, 24 Apr 2022 14:10:39 +0800 Subject: [PATCH] usb: typec: tcpm: fix cc role at port reset In the current implementation, the tcpm set CC1/CC2 role to open when it do port reset would cause the VBUS removed by the Type-C partner. The Figure 4-20 in the TCPCI 2.0 specification show that the CC1/CC2 role should set to 01b (Rp) or 10b (Rd) at Power On or Reset stage in DRP initialization and connection detection. So set CC1/CC2 to Rd to fix it. Signed-off-by: Frank Wang Change-Id: Iea0fbd30c111d59b8d56f8002827eb6ceea28196 --- drivers/usb/typec/tcpm/tcpm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index af0660d2781f..deac55e6ed9f 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -4383,7 +4383,7 @@ static void run_state_machine(struct tcpm_port *port) break; case PORT_RESET: tcpm_reset_port(port); - tcpm_set_cc(port, TYPEC_CC_OPEN); + tcpm_set_cc(port, TYPEC_CC_RD); tcpm_set_state(port, PORT_RESET_WAIT_OFF, PD_T_ERROR_RECOVERY); break;