diff options
| author | Utkarsh Patel <utkarsh.h.patel@intel.com> | 2020-12-08 20:24:08 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-10 16:03:37 +0100 |
| commit | beff5de94fd45dc68f65b45634013184b6d66519 (patch) | |
| tree | e2d685e66d9cef285ec1737983e009c2f8542eb8 /drivers/usb | |
| parent | d2a968dddf98b837de9f9b3f954537c86c9a9f81 (diff) | |
usb: typec: intel_pmc_mux: Configure cable generation value for USB4
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.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Utkarsh Patel <utkarsh.h.patel@intel.com>
Link: https://lore.kernel.org/r/20201209042408.23079-2-utkarsh.h.patel@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/typec/mux/intel_pmc_mux.c | 5 |
1 files changed, 5 insertions, 0 deletions
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; } |