From nobody Thu Mar 5 06:30:31 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E421932572A; Mon, 16 Feb 2026 15:27:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771255643; cv=none; b=hBdWfiGKRpnfdItQZy5BXk+VW0oQxtl4EKHwvh3juAlVyp513a9VSBl5lQOD//5agLL6YJGmfH27M2npRjXTb/YiecXp29e+DiGEzBv9uVyY7RHOo9TMUHdeaGg8L9C/kalkOm6d1G0BTCS4Re0XW4qC9j43DMuI92Gc2MxQcx4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771255643; c=relaxed/simple; bh=X/o7kKrycyJfueFLIcDFGwo8oG/j/XDcQ+Ni+9bU7j0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=FV3Di4/J5vDnFLEwD8I5/oBJKsNQKh+Nndh521LABDCAse8mcvleUn3c+Lfb7g27hlIfldEsDjp+9z+lF76qkzQdfy0uPwVDHxXrSKt5a39uMoJv01+hl24vlSMoiQ+jiVLM9wztC5qzamJVfFSfjpHdkTOBozKzNmQXomJF7bA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SnetH2sU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SnetH2sU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B71DC116C6; Mon, 16 Feb 2026 15:27:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771255642; bh=X/o7kKrycyJfueFLIcDFGwo8oG/j/XDcQ+Ni+9bU7j0=; h=From:To:Cc:Subject:Date:From; b=SnetH2sUG0YxWO7tIfyYOK82VUo2EX0zdjXSSTQwAaX0E08C2sIH7RXfkkN9RIiZU rnX972LJIZ1/7iixrUEiL9mve+TtmxHoMDps6OfNwchcThfT5Wg0jydb/lAuDD527s C75k0qbBB6sVH4eH1e6e9OPnygAGybOLumrzk8PzGJs+zepcsqXrauAxKvSGpf4qoA R7S6CV46E5opJv9L+WA2xNTuIwifHHxl1BIV1P1822wnqrBtunnUIv4RE0sb9VzTbm FdP2oFEJ0XCy+hL61mXuwKZjvIilCtnufx5CDeNszAgFEQztD04ulJSMvbs7cGNp29 uyEB/eUygtuGw== From: Yixun Lan To: Vinod Koul , Neil Armstrong , Ze Huang Cc: Yixun Lan , Vladimir Oltean , Junzhong Pan , spacemit@lists.linux.dev, linux-phy@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v3] phy: k1-usb: add disconnect function support Date: Mon, 16 Feb 2026 23:26:53 +0800 Message-ID: <20260216152653.25244-1-dlan@kernel.org> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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: fe4bc1a08638 ("phy: spacemit: support K1 USB2.0 PHY controller") Signed-off-by: Yixun Lan Reviewed-by: Vladimir Oltean --- To: Vinod Koul To: Neil Armstrong To: Ze Huang Cc: Vladimir Oltean Cc: Junzhong Pan Cc: spacemit@lists.linux.dev Cc: linux-phy@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org Change in v3: - split from v2 as bug fix - fix alignment to open parenthesis - http://lore.kernel.org/r/20260216090112.n5jjpui3luqsybb5@skbuf - Link to v2: https://lore.kernel.org/r/20260214-11-k3-usb2-phy-v2-0-6ed31= e031ab4@kernel.org --- drivers/phy/spacemit/phy-k1-usb2.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/phy/spacemit/phy-k1-usb2.c b/drivers/phy/spacemit/phy-= k1-usb2.c index 342061380012..9215d0b223b2 100644 --- a/drivers/phy/spacemit/phy-k1-usb2.c +++ b/drivers/phy/spacemit/phy-k1-usb2.c @@ -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 = */ =20 +#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; } =20 +static int spacemit_usb2phy_disconnect(struct phy *phy, int port) +{ + struct spacemit_usb2phy *sphy =3D 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 =3D { .init =3D spacemit_usb2phy_init, .exit =3D spacemit_usb2phy_exit, + .disconnect =3D spacemit_usb2phy_disconnect, .owner =3D THIS_MODULE, }; =20 --=20 2.52.0