From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793384516; b=cd5BmUUstgFUpBW8uvhtm/c5KO28Hlk1KgCJpF+75kC3xcn33oS1y1/tKx6tM2sAg5g/ 79A6UCZGbNb38zrJV0T4jLF+4IgGgkhj1oNFdSy80Led2orQIdHZY58/DZpIOIzapLgFg KP2KK9Tp8GWkuQMZxS4pVAuux963MMqO1kGEvECDaz3vqbxw9aoj7zbKWC/ldti8DU9dZ 4/94epLlHt/VDLJC92xpEQHAZT0Rq/rTHhys+19zY05bpTlsR/JbOXwggsAhNYG5c1DQN uVUSVQ8CrLnhrn5a7Ler60ltmfD5usmITZr/3WSzXy9n5elY2Cf4kKVfKRWk9hBrs6Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793384516; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition: Content-Transfer-Encoding:In-Reply-To; bh=5nv0wC5Go1XJNaxDD1nOfqVCMVLbai1ksiJmJqJBQiY=; b=HAad42M0GpVjZ3oRKNbhAScmNyVKnGmRQfPYInmegTbmvuBy6vZDpJtDwyN4Dc5QCN2W VrlQWkOeqM/g2GnfZgdke6UEdpyy6P+bc9WUDnlydnWrCshfyrTTxKsjOxNeBkmbF17k4 DoHU9UEw1OOufa6ccFbeMiYHYGSvbZsV37owj5XiqYgUVt9tgi9AYdfzCOpzYPKArLAfA XkrWkrc0d0BVTkqD3JMqu8jfSvMJQ3i5Aa3ds8U9pIhyQ5pNZpb6tWqiG38aunuMlfGRN cHzHVgLYKuO4wRk0rPTiZB7cJBW9c1ombdZ3YM3LdoR5o4+H7HOzg/2k1Ut0S7GCGLg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b="F2ISqEj/"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 06E50606A31A; Fri, 30 Oct 2026 18:21:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=F2ISqEj/ Received: by smtp.kernel.org (Postfix) with ESMTPSA id 731F21F000C1; Fri, 30 Oct 2026 18:21:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793384515; bh=5nv0wC5Go1XJNaxDD1nOfqVCMVLbai1ksiJmJqJBQiY=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=F2ISqEj/jPFHsaWT4fWEIwvawOQdaVOY4wkBPBZLVvmitSZblbsI/J643p8P7gpbc Hb7omRlAG9gvX7leULcIVigq+YZfKDVsRrTqb9ZS9R7Xu1pmuhAor805J6AsRJIjpQ BR7x/471R3zaQZvk8VDig1A1VxrPjIQU4ro3lSdFTq2hDgGKjbFfSNurLKvAM1YTu8 16jhr4K+Y9cT2tlBeehNwizvzvRWsEubccTWjQeMIIlpiwd/yp6pxDprc8LqlpY+St WwWx+ONeNJUmFgoYDVxh+YOHlaRemuEQo3poj9WuljxHGS85YN6pEo5HnxwtpyPYs2 rfT/Fx8AEt3VA== Date: Fri, 30 Oct 2026 13:21:51 -0500 From: Rob Herring To: Florian Fainelli Cc: linux-arm-kernel@lists.infradead.org, Vinod Koul , Neil Armstrong , Manivannan Sadhasivam , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , Ray Jui , Scott Branden , Broadcom internal kernel review list , Alan Stern , =?utf-8?B?UmFmYcWCIE1pxYJlY2tp?= , Kishon Vijay Abraham I , Yendapally Reddy Dhananjaya Reddy , "open list:GENERIC PHY FRAMEWORK" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , open list , "open list:USB SUBSYSTEM" Subject: Re: [PATCH 2/9] dt-bindings: phy: bcm-ns-usb3-phy: Describe the NSP variant Message-ID: <20261030182151.GA1206797-robh@kernel.org> References: <20261021172819.668120-1-florian.fainelli@broadcom.com> <20261021172819.668120-3-florian.fainelli@broadcom.com> X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20261021172819.668120-3-florian.fainelli@broadcom.com> On Wed, Oct 21, 2026 at 10:28:11AM -0700, Florian Fainelli wrote: > Northstar Plus uses the Northstar Bx PHY register sequence but also > requires coordinated USB2 and USB3 core resets and a USB2 IDM interface > clock enable. > > Add an NSP compatible with a required USB2 DMP phandle. Describe the > shared PHY relationship with EHCI, OHCI and xHCI so initialization > finishes before any host starts operating. > > Signed-off-by: Florian Fainelli > --- > .../bindings/phy/bcm-ns-usb3-phy.yaml | 23 +++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.yaml b/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.yaml > index 7fd419db45d0..00d69b86cbff 100644 > --- a/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.yaml > +++ b/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.yaml > @@ -14,6 +14,9 @@ description: | > Known B1: BCM4707 rev 6 > Known C0: BCM47094 rev 0 > > + Northstar Plus uses the Bx programming sequence, with coordinated USB2 and > + USB3 resets. Its PHY is shared by the EHCI, OHCI and xHCI controllers. > + > maintainers: > - Rafał Miłecki > > @@ -22,6 +25,7 @@ properties: > enum: > - brcm,ns-ax-usb3-phy > - brcm,ns-bx-usb3-phy > + - brcm,nsp-usb3-phy > > reg: > description: address of MDIO bus device > @@ -32,6 +36,13 @@ properties: > description: > Phandle to the DMP (Device Management Plugin) syscon > > + usb2-dmp-syscon: brcm,usb2-dmp > + $ref: /schemas/types.yaml#/definitions/phandle > + description: > + Phandle to the USB2 DMP on Northstar Plus, for its interface clock and > + reset. All USB host controllers must reference this shared PHY so that > + initialization completes before any of them starts using it. > + > "#phy-cells": > const: 0 > > @@ -41,6 +52,18 @@ required: > - usb3-dmp-syscon > - "#phy-cells" > > +allOf: > + - if: > + properties: > + compatible: > + const: brcm,nsp-usb3-phy > + then: > + required: > + - usb2-dmp-syscon > + else: > + properties: > + usb2-dmp-syscon: false > + > additionalProperties: false > > examples: > -- > 2.53.0 >