Hi Angus
> -----Original Message-----
> From: Angus Ainslie <[email protected]>
> Sent: 2018年11月1日 21:53
> To: Jun Li <[email protected]>
> Subject: USB Type C ptn5110
>
> Hi Li,
>
> We have a custom PCB that has a PTN5110 on it. The board can power from the
> USB C no problem but we are starting to look into the data modes and roles
> switching.
>
> When I plug it into a host PC the host doesn't not recognize any device
> attached. I
> don't have anything setup on the target as far as the gadgetfs so I assume
> that is
> the issue there.
>
> Also we would like the port to work in host mode. When we plug and unplug
> devices ( Type C hub and Type C HDMI connector ) I was expecting activity and
> a
> role switch on the port but we only get VBUS on/off events. There's a log
> below
> and I'll attach the page from our schematic, I can send additional pages if
> needed.
>
What usb driver are you using? Is there a sync mechanism between typec driver
and your usb driver?
What kernel version you are using, why SNK_ATTACH_WAIT can come to
PORT_RESET state?
This is tcpm code I see:
case SNK_ATTACH_WAIT:
if ((port->cc1 == TYPEC_CC_OPEN &&
port->cc2 != TYPEC_CC_OPEN) ||
(port->cc1 != TYPEC_CC_OPEN &&
port->cc2 == TYPEC_CC_OPEN))
tcpm_set_state(port, SNK_DEBOUNCED,
PD_T_CC_DEBOUNCE);
else if (tcpm_port_is_disconnected(port))
tcpm_set_state(port, SNK_UNATTACHED,
PD_T_PD_DEBOUNCE);
break;
You can cc to linux-usb mail list for more help.
Li Jun
> Any help would be appreciated.
>
> Thanks
>
> Angus
>
> [ 9.995334] Setting voltage/current limit 0 mV 0 mA [ 9.995339]
> polarity 0
> [ 9.999888] Requesting mux mode 0, usb-role 0, orientation 0 [ 10.001072]
> state change INVALID_STATE -> SNK_UNATTACHED [ 10.001688] CC1: 0 -> 3,
> CC2: 0 -> 0 [state SNK_UNATTACHED, polarity 0, connected] [ 10.001693] state
> change SNK_UNATTACHED -> SNK_ATTACH_WAIT [ 10.001699] state change
> SNK_ATTACH_WAIT -> PORT_RESET [ 10.001709] 0-0052:
> registered
>
>
> [ 10.015559] Setting voltage/current limit 0 mV 0 mA [ 10.015564]
> polarity 0
> [ 10.018415] Requesting mux mode 0, usb-role 0, orientation 0 [ 10.018915]
> cc:=0 [ 10.020105] pending state change PORT_RESET ->
> PORT_RESET_WAIT_OFF @
> 100 ms
> [ 10.021369] CC1: 3 -> 0, CC2: 0 -> 0 [state PORT_RESET, polarity 0,
> disconnected] [ 10.021374] state change PORT_RESET -> SNK_UNATTACHED
> [ 10.021384] Start DRP toggling [ 10.026761] CC1: 0 -> 0, CC2: 0 -> 0
> [state
> DRP_TOGGLING, polarity 0, disconnected]
>
> [ 102.839786] VBUS off
> [ 102.843610] VBUS off
> [ 107.269437] VBUS on
> [ 107.270646] VBUS on
> [ 107.273120] VBUS on
> [ 265.490589] VBUS off
