From nobody Mon Sep 28 12:34:02 2026 Received: from mail-wm1-f42.google.com (mail-wm1-f42.google.com [209.85.128.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D9974D8D9E for ; Fri, 21 Aug 2026 16:16:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787329017; cv=none; b=TL2CAajAajwfimyTXIq82jK5pnIVf/L7f88ss4ApWsrz+MqtegXybT5Rkm/CrB8VegSuQUBVxlsABqGq5EQ3Es5VJilkUt9+bvpxiqNDIFW2BXaI6DCv/CTmjMjh6oW47z+kVNG4SPg/6r9KNq0v0gTdSn/nJOgi8Vhj9otIYq0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787329017; c=relaxed/simple; bh=1P6RDhvtSiDFXb71Q8qA5o6thf2dYrqwTXxVWaBRO0Y=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=F1xZqRyhHXbDTQmlff93LBS6cEiAdqeJLfiavoM9XoVjcpuf+YR6qDYlhvq9iNTZE3/kc4TIdT5yxZRhFHrDyPysp4beWJ4x2TVBSXI9S9am/2mfmSFNH/F2ALL8JEjjdniuuFQjvfFCAQ5FS3dsJoSoqNC0/VUN50A266eqVEA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=flipper.net; spf=pass smtp.mailfrom=flipper.net; dkim=pass (2048-bit key) header.d=flipper.net header.i=@flipper.net header.b=ImLx9AMY; arc=none smtp.client-ip=209.85.128.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=flipper.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flipper.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=flipper.net header.i=@flipper.net header.b="ImLx9AMY" Received: by mail-wm1-f42.google.com with SMTP id 5b1f17b1804b1-4953e04ef16so11592455e9.2 for ; Fri, 21 Aug 2026 09:16:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flipper.net; s=google; t=1787329014; x=1787933814; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :content-type:mime-version:subject:date:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=X+zNPBGZnzCFSe3FXKrZanJvr+O9PoiberfFLnMHO0A=; b=ImLx9AMYTs4T/IiV2rmYDLrIi0zkk86sVK4jMXFHulI9StSab6FDF7JRwmUPDdLMnb /UKM/CDsP7F2nfg4CZRaYeXY89rIBHMyhcxksjoL0+ppXR127fXQeYOxb7dh23+ym3yK p0gZwWF38HKAD8MtMDQ6+Ccw2beO4qQkRbOkrBPcUIMG0lJ3H1P3ReSnVh6dE84OJX2R VB6QFk/2pNUBC5JOCeDfV8o3w5jqZmhWM+K/mz+D4a8mApb2VfgCuMCglVYNa0ee8v+Z 06gxloE9JLv8kGst/cDm9LKucF/l0ojXJxiwaOWAfzpfd7Qoor6EGDflOnWRl3VMlMxD z36w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787329014; x=1787933814; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :content-type:mime-version:subject:date:from:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=X+zNPBGZnzCFSe3FXKrZanJvr+O9PoiberfFLnMHO0A=; b=nh4QtvOQvDfZMcnnxdXrEzoSGZgyLg7t9IsnbtoelwwZDp8K8+P7Jy3ssEXpkWifGl Bi+4EzxE6Bmsrpl2c1SPPqo8nlGN8Wpi4Dw2EMSJtCOqu0H4PvVXs4GOnsyCmgcFsPkr ByaT8lEjS1S4mAKU0K9pyXJVKCwjC4NbQ3etjeOzNT7Te9uvn738PxZRubJFV87aKSDX 11ux93Fjekfrp9BFJM8Yu+I6fkukLkm1dKU+vRfF3V9FM+B2Fq6QQMe3PS7pyc60bRpq LEk2VCE2vuqfh4ln3F3AjhFOP1DpWDVglbBkqAXpfrqsiS4cumtsPn43CtN9+RGwZ9LG bOug== X-Forwarded-Encrypted: i=1; AHgh+RqSTxstvFaR3UH3f6PyRdi4NQhcOEDn2r71TbIxYXv9WB5b8fTHpQmTA6d0sv54vjHe8iKpkNeekhIjPUI=@vger.kernel.org X-Gm-Message-State: AOJu0YzhN1SSvMjbdQxpVgc0DmLDJKUAZuMtdSmi7oApHkP1OJ6qLNCW x/uLuEw57YjUFUfXehwVjUlCZIqnUfqPMPzzztckXbICvdw6dq3geMYvmFFz0/8UMMk= X-Gm-Gg: AR+sD11Yt+2FiMxX/4fAm1xC1dZ1Q7Hb/KHCELKwK+1CzFW0hjJmJmGeqs0oKny1/wf yqFRigBPlCLEMRutgYG119zEKPc+uAmaJ73IpNE9QtM8dEv1BwYdneqVIrL4U8RPzjJU0K0k4e4 yjxG3WE3p/kFAZcQV9gGelpdc9SbK5jwJTZUQaOI1uiG4XMqMO7cBFW3nuVqTRnusEkyopd5r+D +xm62sj0OrFNSDArAw3XnJsH62lZTsqI0CRMsEMLmjrC56Ts3BqoucV0bs5ccOAHMLbjPhXI/0Z cs+1vqXAD2SzqOz9xJm/433pfT0kegS47DW8ys3LvzVHc528nbVZUpLZp+cYZH7t7j0JcFIrKBp vXbIzCE5Se9gqdaaFwc5NeSgWYXHsArZG8T36X2mDDlE8b+eVnReDWros2UgNzgYIl4wbR0Cmxw hhhaaSbablE53Fc6eI/LuU9a2I8/OVzq8d6DRwv4GGQN2s3xilX1MbtPxBgDe450DZHlu3zhfpb m6HCFvNsJ6VFx0klDZY/9cskN7NV/P/83mGHBqfrw== X-Received: by 2002:a05:600c:6217:b0:499:8ae1:b900 with SMTP id 5b1f17b1804b1-499b8460e7fmr126925575e9.12.1787329013587; Fri, 21 Aug 2026 09:16:53 -0700 (PDT) Received: from alchark-surface.localdomain (bba-86-98-192-94.alshamil.net.ae. [86.98.192.94]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-499bd581a49sm10245235e9.1.2026.08.21.09.16.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Aug 2026 09:16:53 -0700 (PDT) From: Alexey Charkov Date: Fri, 21 Aug 2026 20:16:34 +0400 Subject: [PATCH 1/2] dt-bindings: usb: ti,hd3ss3220: Add support for supply regulators 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: <20260821-hd3ss3220-regulators-v1-1-405e5c4fb306@flipper.net> References: <20260821-hd3ss3220-regulators-v1-0-405e5c4fb306@flipper.net> In-Reply-To: <20260821-hd3ss3220-regulators-v1-0-405e5c4fb306@flipper.net> To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Biju Das , Heikki Krogerus Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Alexey Charkov X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1627; i=alchark@flipper.net; h=from:subject:message-id; bh=1P6RDhvtSiDFXb71Q8qA5o6thf2dYrqwTXxVWaBRO0Y=; b=owGbwMvMwCW2adGNfoHIK0sZT6slMWR1VL5eOUtJWqxvPeuseqXGhYbFEz69njVza92FmVOVV gdFv05Q7pjIwiDGxWAppsgy99sS26lGfLN2eXh8hZnDygQyRFqkgQEIWBj4chPzSo10jPRMtQ31 DI10jHWMGLg4BWCqteYwMmzqDRS4oOJ2o1HNLJT3a6PX6ogylfhriYJ6vgvPsnc+OM7wk7FWOnz KTJ5+c/sZ/eaXODRWTZeS61+r3ue6bIHragVNXgA= X-Developer-Key: i=alchark@flipper.net; a=openpgp; fpr=9DF6A43D95320E9ABA4848F5B2A2D88F1059D4A5 HD3SS3220 requires two supply regulators to operate. It also strictly requires that 5V is present before 3.3V, otherwise it gets backpowered in a non-functional state through the 3.3V rail and kills the I2C bus. Add both supply regulators to enable their explicit description in board device trees. Signed-off-by: Alexey Charkov Acked-by: Conor Dooley --- Documentation/devicetree/bindings/usb/ti,hd3ss3220.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/ti,hd3ss3220.yaml b/Docu= mentation/devicetree/bindings/usb/ti,hd3ss3220.yaml index 06099e93c6c3..654a982666dd 100644 --- a/Documentation/devicetree/bindings/usb/ti,hd3ss3220.yaml +++ b/Documentation/devicetree/bindings/usb/ti,hd3ss3220.yaml @@ -25,6 +25,15 @@ properties: interrupts: maxItems: 1 =20 + vcc33-supply: + description: 3.3V supply (VCC33 pin), powering the SuperSpeed 2:1 MUX. + + vdd5-supply: + description: + 5V supply (VDD5 pin), powering the CC controller and sourcing VCONN. + VDD5 has to be stable for at least tVDD5V_PG (2ms) before VCC33 star= ts + ramping up, unless ENn_CC is held high while both rails ramp up. + id-gpios: description: An input gpio for USB ID pin. Upon detecting a UFP device, HD3SS3220 @@ -68,6 +77,8 @@ examples: reg =3D <0x47>; interrupt-parent =3D <&gpio6>; interrupts =3D <3>; + vcc33-supply =3D <&vcc3v3_control>; + vdd5-supply =3D <&vcc5v0_device_s0>; =20 ports { #address-cells =3D <1>; --=20 2.54.0 From nobody Mon Sep 28 12:34:02 2026 Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7E57E4D8D88 for ; Fri, 21 Aug 2026 16:16:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.53 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787329023; cv=none; b=bplM2YKdJc/tLIsfSVBbTKVsROWqxMnw6EBzD4PEFjLmjmtKPx2CuaqMej2lnXeuUM3H/mxAhtgfGxDVwBMlecA9U2K+WmPwrqakp6eNidYbKb2q2TdU5TeYf+EE5Z8FKSw/AAs8A6U9x3PduJUlTuISAjFn+jnVdAG7yxKlqRA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787329023; c=relaxed/simple; bh=9e0v/qAvMLuCDj8b/dk5D37lly7cVklfqGCzOodeUxg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=IqUHY/3q+LjLNHZ8I8jInqhTpzwPBLsIXpuf8STBI8s7a91Xna/3I2K1QlXkK9egKk6+mXxtwOURCbs56MO8h+Y4If65/2K3L7RkoPOPiJNHzoLEASxAOKwBeWz0q2s7yT39txkHlcKUNADbsHbpwmHwwJ15zMddvKaoX9TeGJk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=flipper.net; spf=pass smtp.mailfrom=flipper.net; dkim=pass (2048-bit key) header.d=flipper.net header.i=@flipper.net header.b=eqCnFwT7; arc=none smtp.client-ip=209.85.128.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=flipper.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flipper.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=flipper.net header.i=@flipper.net header.b="eqCnFwT7" Received: by mail-wm1-f53.google.com with SMTP id 5b1f17b1804b1-4998590d392so9840275e9.0 for ; Fri, 21 Aug 2026 09:16:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flipper.net; s=google; t=1787329016; x=1787933816; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :content-type:mime-version:subject:date:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=4vNa8/pFwons02qqZoxti7YnDUxSaegLDxkgxCs0WgE=; b=eqCnFwT7DZzJo/i56OqYEUN7wrmziUUeMavOCZR4oEnfyxtCmDvlKXoTGSGeFjY98T zmwLLk+HIExXLwAEqVhukDZcqbeUafQr+zC3cShyQJiS+3P4mJ+ijprMdsf7AdIhorO1 JIPjKNf7tIth9TJ2XDshplS/WkW+ZCDfWn4eEkfhxQVmAQpLh4n6+PnNBPV/1u5X4nQa D69Yoe6Qbit9DNnTvgmD6FhmQr/s4P2pJRJBg/J7k6Nke2RmRoMIS+FGNR45JxhO617t 4qR2qK2IuzPmIVAo6Wcmue2ep5h/tLE+yWkFcC17Dt8efq8z4EvmeDyUdEcGaiawjgO3 vsig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787329016; x=1787933816; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :content-type:mime-version:subject:date:from:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=4vNa8/pFwons02qqZoxti7YnDUxSaegLDxkgxCs0WgE=; b=I/zwXhIEKmCA9Vl9oSYp/gG1U05bOTQx2WXZqtdmH2AjQqZhFbY6JjdLtkBP8pHM0k a+pognMFbvlLHhb1ubPrzfJrRVOVE4QG9Ck2tCEDDO5epGTIfgq5bWX2/S4FzrfCuEZ2 4hF0vJHYPeFYvr2klA5PwywwMlh2Knuu9hFpIAQA29I8lWAATI2O7Zk0PZfonJ0I+3Nx b5toYfS2mn0Fnv+MMG5oFjpAFsU7pIUVIw/4bzLnBgsO0gSArFK275s4bizZ68x4d3d2 P3TI+9/xmjebzgvyqIiqqyXWKwsY9FacDhAOYapsa5NRGfH93/DMfiLJ9BFjGTSfZSJN 25ig== X-Forwarded-Encrypted: i=1; AHgh+RrlSYiiAKEGKHiSYvH2IxW35RBA4KyUGe0m8fXvNzGSFe/mcHgMoWoD+YmNxUgaFO9tXbi1M8Q6oziV4Bw=@vger.kernel.org X-Gm-Message-State: AOJu0Yx8MYHqd23sI9ARZZRtgZajz98gYCpIMeHNrh7m7tixx9w+cYjH nXcjESsqamq6/6+5+ld03fPfMiKusGP6FEQRVBmelJhSWwKkRMF/RwabhtcWzdAGp4A= X-Gm-Gg: AR+sD11DFn9TBXCeaKr7PXnqZdzust/7V/kKkhxJ408M/BwYy9OsYvo9njHEjs6LPKw Z8sjw+kNIdkq9DDbetlJSzwAbCORIU8H9xLGtwALsPyAze7UdqG5i+0KUAgeymTAcR/55Fqjbkc C3xFfe2hE9xCyLxYf4xq8FpxwVRGtPtSHFmoDFpNLc5MQcxZ4RhLj1LNohYQq6T8oB9LtiEA0hh NPMKn7d64Wvs5kPKUzADCUUeuPUPSLSkLOiSn3bGXokCAts1tL3kzNtEP0SJ7oGV3u0LOn8OoIa vvpL7jYS4Qr4fsIf3FYSJ7i1AJzwPHVvKPMamNdLOK4yk0aaq4DgWJxCdnF3WzlTmQ/Eum/fjug mzLnIJDqlPQ6SzRhFk1UOPT298oXpJk0rAqa7UpKq/Zw6Kuip6D7jGTGfCyvzz8hohm4dWmidmV k4IjjFQpRhobHI9r+ThbwDYC2URLt9NWbwU3FJulpw3LRHHLhxwAZ970Pqky3olXuA2lABFeUnC AaEYI2IdnMNDaB6kRdbRSzkatkMKpw4KVqhX4Ep9piuWcH7urd55A== X-Received: by 2002:a05:600c:e549:20b0:499:b65e:49c9 with SMTP id 5b1f17b1804b1-499b8343decmr91734895e9.10.1787329015693; Fri, 21 Aug 2026 09:16:55 -0700 (PDT) Received: from alchark-surface.localdomain (bba-86-98-192-94.alshamil.net.ae. [86.98.192.94]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-499bd581a49sm10245235e9.1.2026.08.21.09.16.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Aug 2026 09:16:55 -0700 (PDT) From: Alexey Charkov Date: Fri, 21 Aug 2026 20:16:35 +0400 Subject: [PATCH 2/2] usb: typec: hd3ss3220: Add support for supply regulators 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: <20260821-hd3ss3220-regulators-v1-2-405e5c4fb306@flipper.net> References: <20260821-hd3ss3220-regulators-v1-0-405e5c4fb306@flipper.net> In-Reply-To: <20260821-hd3ss3220-regulators-v1-0-405e5c4fb306@flipper.net> To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Biju Das , Heikki Krogerus Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Alexey Charkov X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2415; i=alchark@flipper.net; h=from:subject:message-id; bh=9e0v/qAvMLuCDj8b/dk5D37lly7cVklfqGCzOodeUxg=; b=owGbwMvMwCW2adGNfoHIK0sZT6slMWR1VL4uX+nFxbnzVYiVpUhSu4m40qnT/SeuzxVeXfd2f WN5nGRZx0QWBjEuBksxRZa535bYTjXim7XLw+MrzBxWJpAh0iINDEDAwsCXm5hXaqRjpGeqbahn aKRjrGPEwMUpAFO9cSrDX9mLB/VbF6TY9l2YpjBzTcEG9wLDTatVP3VM+XbZ7ItXzmyGP1yuczg CG54mX5Ba/6f3nn5gktRbiyX/2j+xqj/SZDnuwg4A X-Developer-Key: i=alchark@flipper.net; a=openpgp; fpr=9DF6A43D95320E9ABA4848F5B2A2D88F1059D4A5 HD3SS3220 requires VDD5 input to be present 2ms before VCC33 is applied, or else it gets backpowered via the 3.3V rail in a non-functional state and wedges the I2C bus, bringing down all devices on it. Enable both regulators in the datasheet prescribed sequence if provided. Signed-off-by: Alexey Charkov Reviewed-by: Heikki Krogerus --- drivers/usb/typec/hd3ss3220.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/usb/typec/hd3ss3220.c b/drivers/usb/typec/hd3ss3220.c index d0de5a2488f9..b53455abc048 100644 --- a/drivers/usb/typec/hd3ss3220.c +++ b/drivers/usb/typec/hd3ss3220.c @@ -49,6 +49,9 @@ #define HD3SS3220_REG_GEN_CTRL_MODE_SELECT_UFP BIT(4) #define HD3SS3220_REG_GEN_CTRL_MODE_SELECT_DRP (BIT(5) | BIT(4)) =20 +/* Minimum time VDD5 has to be stable before VCC33 starts ramping up */ +#define HD3SS3220_TVDD5V_PG_US 2000 + struct hd3ss3220 { struct device *dev; struct regmap *regmap; @@ -358,6 +361,31 @@ static irqreturn_t hd3ss3220_id_isr(int irq, void *dev= _id) return IRQ_HANDLED; } =20 +/* + * Bring both supplies up in the order the datasheet asks for. Powering VC= C33 + * first can back-power the device in a non-functioning state, which groun= ds + * the I2C bus and takes both this device and any others on the same bus d= own + */ +static int hd3ss3220_power_up(struct device *dev) +{ + int ret; + + ret =3D devm_regulator_get_enable(dev, "vdd5"); + if (ret) + return dev_err_probe(dev, ret, "failed to enable VDD5\n"); + + /* Nothing to stagger against unless the board describes both rails */ + if (device_property_present(dev, "vdd5-supply") && + device_property_present(dev, "vcc33-supply")) + fsleep(HD3SS3220_TVDD5V_PG_US); + + ret =3D devm_regulator_get_enable(dev, "vcc33"); + if (ret) + return dev_err_probe(dev, ret, "failed to enable VCC33\n"); + + return 0; +} + static int hd3ss3220_probe(struct i2c_client *client) { struct typec_capability typec_cap =3D { }; @@ -379,6 +407,10 @@ static int hd3ss3220_probe(struct i2c_client *client) if (IS_ERR(hd3ss3220->regmap)) return PTR_ERR(hd3ss3220->regmap); =20 + ret =3D hd3ss3220_power_up(hd3ss3220->dev); + if (ret) + return ret; + /* For backward compatibility check the connector child node first */ connector =3D device_get_named_child_node(hd3ss3220->dev, "connector"); if (connector) { --=20 2.54.0