When VBUS is not discovered within PD_T_PS_SOURCE_ON although Rp
is detected on CC, TCPM switches the port to SNK_UNATTACHED
state. SNK_UNATTACHED, however does not force TYPEC_CC_OPEN which
makes the partner(source) to think that it is connected.
To overcome this issue, force the port into PORT_RESET state
to make sure the CC lines are open.
Signed-off-by: Badhri Jagan Sridharan <bad...@google.com>
---
drivers/staging/typec/tcpm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/typec/tcpm.c b/drivers/staging/typec/tcpm.c
index 9e0111dea7c4..47b8fec5ea36 100644
--- a/drivers/staging/typec/tcpm.c
+++ b/drivers/staging/typec/tcpm.c
@@ -2380,7 +2380,7 @@ static void run_state_machine(struct tcpm_port *port)
0);
else
/* Wait for VBUS, but not forever */
- tcpm_set_state(port, SNK_UNATTACHED, PD_T_PS_SOURCE_ON);
+ tcpm_set_state(port, PORT_RESET, PD_T_PS_SOURCE_ON);
break;
case SRC_TRY:
--
2.14.1.342.g6490525c54-goog
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