From nobody Mon Feb 9 10:39:47 2026 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 C685619F464 for ; Thu, 3 Apr 2025 23:02:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743721346; cv=none; b=oC10FlWfKjJUhimGV7MlyKOQaRMOyK4+3Vn9Oij/2NlQjM1q6wQSv/ik7BetZUYzpkqMqnNOmfNCfTxF/AFV2dk7qcKa4kBwXzT3slUDpVGvSe8C/97YIfL3vzGPqe5gH3Su8DpHK+Hb06udt6gPDiuI3mcruhtU393Ja5cpu3w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743721346; c=relaxed/simple; bh=5gz+IKOc8N3R2ZPRZ8QLjEQogRib4lDUx76Z0fGIaoE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=FRh5xyUNvx4NZvJCHld8AT6mHAd3KscqSre7Z9SEcOXn6f4FNes5DK/sT2nRIe5ueI1/sxlAvPxh87LzZOt0jabdCdtrJVYRiHvOK0D9ec7mqb1zbdxd2QRRmojkDlkQgtyfOxrZF7tUhUiG73g/WrIiJkWFqVxxEZ6YEIoeS9k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1u0TZm-00020j-2a; Fri, 04 Apr 2025 01:02:22 +0200 Received: from dude04.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::ac]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1u0TZl-003AlB-08; Fri, 04 Apr 2025 01:02:21 +0200 Received: from localhost ([::1] helo=dude04.red.stw.pengutronix.de) by dude04.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1u0TZk-004d1L-3B; Fri, 04 Apr 2025 01:02:20 +0200 From: Michael Grzeschik Date: Fri, 04 Apr 2025 01:02:20 +0200 Subject: [PATCH] usb: typec: mux: fsa4480: add regulator support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250404-ml-topic-typec-mux-fs4480-v1-1-475377ef22a3@pengutronix.de> X-B4-Tracking: v=1; b=H4sIAHsT72cC/x3MQQqDMBBA0avIrDswpiONXqW4kDhpBxoNiYpFv LvB5Vv8f0CWpJKhqw5IsmnWeSqoHxW47zB9BHUsBkOmISbG8MNljupw+UdxGNYdfWa2hM/WML1 8y94ylD4m8brf73d/nhfEvfVWawAAAA== To: Heikki Krogerus , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, Michael Grzeschik X-Mailer: b4 0.12.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1405; i=m.grzeschik@pengutronix.de; h=from:subject:message-id; bh=5gz+IKOc8N3R2ZPRZ8QLjEQogRib4lDUx76Z0fGIaoE=; b=owEBbQKS/ZANAwAKAb9pWET5cfSrAcsmYgBn7xN8EiywtJhILSIHVsUv53/iqlpIIIdYB2VhW NasEmAvg9+JAjMEAAEKAB0WIQQV2+2Fpbqd6fvv0Gi/aVhE+XH0qwUCZ+8TfAAKCRC/aVhE+XH0 q7ZwD/4u/xwXm3iubekHtT7RjkrbqscBQdjwM7EhYvz2WiFjNHTIcn2LBzCyHEZMagQuCSFPiW7 1EBesBg9+KjkEy6byeiFYjxbREX7nTkADx/gXIDj8ryv30AYOzgDMQ5QKlmnzVXZpGWlb0JUEOd IlI9sB1XZdzaf2L26BFgwsugQfEHKDs5b4Rw/Df8/iTYAfdOF5iJ3O6RU35qWRXKk6kQq1EAakV U5iBqv/cdRpJ3QoJoiR0mR8YR3hLb7B2gVApPj0Hy33s+1oAQCYXW2z9LLrqYvYr9AXAsyZfbQf C0Nr7cCtCF9aW1BIP93UISavhVp2Z76Mxm1WzixU8MjwZ+bgO/x5l84ATHyB07SnUXnhAa1j4yv V9HTFTjqno8KE3OsFKHJnJywu0j04HNSLjj5i84tbfyry7TtQSxavCXYVrooNi/8ZwU3HuLD/jo uYDEq4fIXqb1Suapx6kAXQDXufU7BXwKKLQr3s7Dl2niM9tx1rSNeKOy0PTLeNpXHEhU3gDMC9e A6EWKMn+oVkDDBaZNSLKrIyw7iFS9PQazChJRYnsasvXUwOnLOt8wajI0H2zbsaw1oBk9M19GQS NGwB6JHIex7xOGfQ8GYVNnyTIzsEVDARMfO4Z1xwNpyl2WHzCrAvsVXojBxJ33U7jODzkUieX0t NTdVO0T7ull/yJg== X-Developer-Key: i=m.grzeschik@pengutronix.de; a=openpgp; fpr=957BC452CE953D7EA60CF4FC0BE9E3157A1E2C64 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: m.grzeschik@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org The fsa4480 vcc lane could be driven by some external regulator. This patch is adding support to enable the regulator before probing. Signed-off-by: Michael Grzeschik Reviewed-by: Dmitry Baryshkov Reviewed-by: Heikki Krogerus --- drivers/usb/typec/mux/fsa4480.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/typec/mux/fsa4480.c b/drivers/usb/typec/mux/fsa448= 0.c index f71dba8bf07c9..c54e42c7e6a16 100644 --- a/drivers/usb/typec/mux/fsa4480.c +++ b/drivers/usb/typec/mux/fsa4480.c @@ -12,6 +12,7 @@ #include #include #include +#include =20 #define FSA4480_DEVICE_ID 0x00 #define FSA4480_DEVICE_ID_VENDOR_ID GENMASK(7, 6) @@ -273,6 +274,10 @@ static int fsa4480_probe(struct i2c_client *client) if (IS_ERR(fsa->regmap)) return dev_err_probe(dev, PTR_ERR(fsa->regmap), "failed to initialize re= gmap\n"); =20 + ret =3D devm_regulator_get_enable_optional(dev, "vcc"); + if (ret && ret !=3D -ENODEV) + return dev_err_probe(dev, ret, "Failed to get regulator\n"); + ret =3D regmap_read(fsa->regmap, FSA4480_DEVICE_ID, &val); if (ret) return dev_err_probe(dev, -ENODEV, "FSA4480 not found\n"); --- base-commit: a1b5bd45d4ee58af4f56e49497b8c3db96d8f8a3 change-id: 20250404-ml-topic-typec-mux-fs4480-392407f94f84 Best regards, --=20 Michael Grzeschik