By default (i.e. without manually enabling runtime PM) DWC3 requests the
USB3 PHY once and keeps it enabled all the time. When DisplayPort is
being requested later on, a mode change is needed. This re-initializes
the PHY. During re-initialization the status variable has incorrectly
been cleared, which means the tracking information for USB3 is lost.

This is not an immediate problem, since the DP side keeps the PHY
enabled. But once DP is toggled off, the whole PHY will be disabled.
This is a problem, because the USB side still needs it powered.

Fix things by not clearing the status flags.

Fixes: 2f70bbddeb45 ("phy: rockchip: add usbdp combo phy driver")
Signed-off-by: Sebastian Reichel <redacted>
---
 drivers/phy/rockchip/phy-rockchip-usbdp.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-usbdp.c b/drivers/phy/rockchip/phy-rockchip-usbdp.c
index a5ffdf7a6e76..12dfdd470a78 100644
--- a/drivers/phy/rockchip/phy-rockchip-usbdp.c
+++ b/drivers/phy/rockchip/phy-rockchip-usbdp.c

@@ -1008,7 +1008,6 @@ static int rk_udphy_power_on(struct rk_udphy *udphy, u8 mode)
 			rk_udphy_u3_port_disable(udphy, false);
 		udphy->mode_change = false;
 	} else if (udphy->mode_change) {
-		udphy->status = UDPHY_MODE_NONE;
 		if (udphy->mode == UDPHY_MODE_DP)
 			rk_udphy_u3_port_disable(udphy, true);
 

-- 
2.53.0