[PATCH] usb: mtu3: enable auto switch from U3 to U2
From: chunfeng.yun@mediatek.com (Chunfeng Yun)
Date: 2016-12-07 07:24:49
Also in:
linux-mediatek, lkml
Subsystem:
mediatek usb3 drd ip driver, the rest, usb subsystem · Maintainers:
Chunfeng Yun, Linus Torvalds, Greg Kroah-Hartman
inform mac2 to build U2 link automatically after U3 detect fail without software setting soft_connect. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> --- drivers/usb/mtu3/mtu3_core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index af3e531..ca05021 100644
--- a/drivers/usb/mtu3/mtu3_core.c
+++ b/drivers/usb/mtu3/mtu3_core.c@@ -568,6 +568,8 @@ static void mtu3_regs_init(struct mtu3 *mtu) SW_U1_REQUEST_ENABLE | SW_U2_REQUEST_ENABLE); /* device responses to u3_exit from host automatically */ mtu3_clrbits(mbase, U3D_LTSSM_CTRL, SOFT_U3_EXIT_EN); + /* automatically build U2 link when U3 detect fail */ + mtu3_setbits(mbase, U3D_USB2_TEST_MODE, U2U3_AUTO_SWITCH); } mtu3_set_speed(mtu);
--
1.7.9.5