Commit f0cf0a88 authored by Yixun Lan's avatar Yixun Lan Committed by Vinod Koul
Browse files

phy: k1-usb: add disconnect function support 



A disconnect status BIT of USB2 PHY need to be cleared, otherwise
it will fail to work properly during next connection when devices
connect to roothub directly.

Fixes: fe4bc1a0 ("phy: spacemit: support K1 USB2.0 PHY controller")
Signed-off-by: default avatarYixun Lan <dlan@kernel.org>
Reviewed-by: default avatarVladimir Oltean <olteanv@gmail.com>
Link: https://patch.msgid.link/20260216152653.25244-1-dlan@kernel.org


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent a258d843

drivers/phy/spacemit/phy-k1-usb2.c

+14 −0
Original line number Diff line number Diff line
@@ -48,6 +48,9 @@ 
#define  PHY_CLK_HSTXP_EN		BIT(3)		/* clock hstxp enable */

#define  PHY_HSTXP_MODE			BIT(4)		/* 0: force en_txp to be 1; 1: no force */



#define PHY_K1_HS_HOST_DISC		0x40

#define  PHY_K1_HS_HOST_DISC_CLR		BIT(0)



#define PHY_PLL_DIV_CFG			0x98

#define  PHY_FDIV_FRACT_8_15		GENMASK(7, 0)

#define  PHY_FDIV_FRACT_16_19		GENMASK(11, 8)
@@ -142,9 +145,20 @@ static int spacemit_usb2phy_exit(struct phy *phy) 
	return 0;

}



static int spacemit_usb2phy_disconnect(struct phy *phy, int port)

{

	struct spacemit_usb2phy *sphy = phy_get_drvdata(phy);



	regmap_update_bits(sphy->regmap_base, PHY_K1_HS_HOST_DISC,

			   PHY_K1_HS_HOST_DISC_CLR, PHY_K1_HS_HOST_DISC_CLR);



	return 0;

}



static const struct phy_ops spacemit_usb2phy_ops = {

	.init = spacemit_usb2phy_init,

	.exit = spacemit_usb2phy_exit,

	.disconnect = spacemit_usb2phy_disconnect,

	.owner = THIS_MODULE,

};