USB4 specification chapter 3 indicates that cable data rates have to be rounded for USB4 device to operate as USB4. With that configure cable generation value to use rounded data rates for USB4.
Signed-off-by: Utkarsh Patel <[email protected]> --- Changes in v4: - Removed usage of tbt_mode_vdo since data rates should always be rounded in the case of USB4. - Updated commit message to reflect the change. Changes in v3: - Moved TBT_CABLE_ROUNDED_SUPPORT assignment to the same line. Changes in v2: - No change. --- drivers/usb/typec/mux/intel_pmc_mux.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/typec/mux/intel_pmc_mux.c b/drivers/usb/typec/mux/intel_pmc_mux.c index e58ae8a7fefb..cf37a59ce130 100644 --- a/drivers/usb/typec/mux/intel_pmc_mux.c +++ b/drivers/usb/typec/mux/intel_pmc_mux.c @@ -327,6 +327,11 @@ pmc_usb_mux_usb4(struct pmc_usb_port *port, struct typec_mux_state *state) fallthrough; default: req.mode_data |= PMC_USB_ALTMODE_ACTIVE_CABLE; + + /* Configure data rate to rounded in the case of Active TBT3 + * and USB4 cables. + */ + req.mode_data |= PMC_USB_ALTMODE_TBT_GEN(1); break; } -- 2.17.1
