[PATCH v9 20/38] phy: rockchip: usbdp: Re-init the PHY on orientation change
From: Sebastian Reichel <hidden>
Date: 2026-07-01 23:35:56
Also in:
linux-devicetree, linux-phy, linux-rockchip, linux-usb, lkml
Subsystem:
arm/rockchip soc support, generic phy framework, the rest · Maintainers:
Heiko Stuebner, Vinod Koul, Linus Torvalds
Changing the cable orientation reconfigures the lane muxing, which requires re-initializing the PHY. Without this DP functionality breaks, if the cable is re-plugged with swapped orientation. Signed-off-by: Sebastian Reichel <redacted> --- drivers/phy/rockchip/phy-rockchip-usbdp.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/phy/rockchip/phy-rockchip-usbdp.c b/drivers/phy/rockchip/phy-rockchip-usbdp.c
index 8f06bb9b1fcb..eab9e82dbfe4 100644
--- a/drivers/phy/rockchip/phy-rockchip-usbdp.c
+++ b/drivers/phy/rockchip/phy-rockchip-usbdp.c@@ -626,6 +626,7 @@ static int rk_udphy_orien_sw_set(struct typec_switch_dev *sw, enum typec_orientation orien) { struct rk_udphy *udphy = typec_switch_get_drvdata(sw); + bool flipped = orien == TYPEC_ORIENTATION_REVERSE; mutex_lock(&udphy->mutex);
@@ -637,7 +638,10 @@ static int rk_udphy_orien_sw_set(struct typec_switch_dev *sw, goto unlock_ret; } - udphy->flip = orien == TYPEC_ORIENTATION_REVERSE; + if (udphy->flip != flipped) + udphy->phy_needs_reinit = true; + + udphy->flip = flipped; rk_udphy_set_typec_default_mapping(udphy); rk_udphy_usb_bvalid_enable(udphy, true);
--
2.53.0