Commit 5172eb9a authored Sep 04, 2022 by Szuying Chen Committed by Mika Westerberg Sep 07, 2022

thunderbolt: Allow NVM upgrade of USB4 host routers



Intel pre-USB4 host routers required the firmware connection manager to
be active in order to perform NVM firmware upgrade and for this reason
it was disabled when software connection manager is active. However,
this is not necessary for USB4 host routers as this functionality is
part of router operations that the router implements if it wants to
support this.

Signed-off-by: Szuying Chen <Chloe_Chen@asmedia.com.tw>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

parent d0f1e0c2

drivers/thunderbolt/tb.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -1442,8 +1442,11 @@ static int tb_start(struct tb *tb)
		* ICM firmware upgrade needs running firmware and in native
		* mode that is not available so disable firmware upgrade of the
		* root switch.
		*
		* However, USB4 routers support NVM firmware upgrade if they
		* implement the necessary router operations.
		*/
		tb->root_switch->no_nvm_upgrade = true;
		tb->root_switch->no_nvm_upgrade = !tb_switch_is_usb4(tb->root_switch);
		/* All USB4 routers support runtime PM */
		tb->root_switch->rpm = tb_switch_is_usb4(tb->root_switch);