Messages in this thread Patch in this message | | | From | Utkarsh Patel <> | Subject | [PATCH v3 1/4] usb: typec: Use Thunderbolt 3 cable discover mode VDO in Enter_USB message | Date | Wed, 18 Nov 2020 22:32:08 -0800 |
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When Thunderbolt 3 cable is being used to create USB4 connection, use Thunderbolt 3 discover mode VDO to fill details such as active cable plug link training and cable rounded support. With USB4 cables, these VDO members need not be filled.
Suggested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Utkarsh Patel <utkarsh.h.patel@intel.com>
-- Changes in v3: - Changed the commit mesage to reflect why TBT3 VDO is being used. - Added more details in the header file about the usage of TBT3 VDO.
Changes in v2: - No change. -- --- include/linux/usb/typec.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index 6be558045942..25731ed863fa 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -75,6 +75,10 @@ enum typec_orientation { /* * struct enter_usb_data - Enter_USB Message details * @eudo: Enter_USB Data Object + * @tbt_cable_vdo: TBT3 Cable Discover Mode Response + * @tbt_cable_vdo needs to be filled with details of active cable plug link + * training and cable rounded support when thunderbolt 3 cable is being used to + * create USB4 connection. Do not fill this in case of USB4 cable. * @active_link_training: Active Cable Plug Link Training * * @active_link_training is a flag that should be set with uni-directional SBRX @@ -83,6 +87,7 @@ enum typec_orientation { */ struct enter_usb_data { u32 eudo; + u32 tbt_cable_vdo; unsigned char active_link_training:1; }; -- 2.17.1
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