Commit beff5de9 authored Dec 08, 2020 by Utkarsh Patel Committed by Greg Kroah-Hartman Dec 10, 2020

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&nbsp;&lt;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>

parent d2a968dd

drivers/usb/typec/mux/intel_pmc_mux.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}

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