From patchwork Fri Feb 28 02:07:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Ren X-Patchwork-Id: 11411369 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 22A9114E3 for ; Fri, 28 Feb 2020 02:08:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED38F24695 for ; Fri, 28 Feb 2020 02:08:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="YI6/hC9Q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730756AbgB1CIW (ORCPT ); Thu, 27 Feb 2020 21:08:22 -0500 Received: from mail-pf1-f196.google.com ([209.85.210.196]:34067 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730736AbgB1CIT (ORCPT ); Thu, 27 Feb 2020 21:08:19 -0500 Received: by mail-pf1-f196.google.com with SMTP id i6so867634pfc.1; Thu, 27 Feb 2020 18:08:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=HzRU1ozCvifY6J0qAE+2jJ3JxrolEuTI7i1JJUCoGUo=; b=YI6/hC9QKIEOCJfin3HMlh8X26S+gmWpoljYrsp/+kCsAb5ir2WHqgMSFrGpTREtwb 8DqrGWac5OL8FpQLWvMOhEzKTDnYaAD92uNBRbSaLf5rhLL/rfew1PFnrNxzc7oYl4qR BEwGzY6tz8CcJCnYvCBQQTwujMCXh4xLtoeJ18JcfN+f4JKWXcvGNcdkSd/32wWyEszt unhgU7Pn6LggVceSkv4s4DKwutWAfGvuU3TUh+Y63Zv21n00DDsLThbpxVGGbnTFEE1z OeFLO/ld8L0cirWMj8c34EljgUdOPpJICm6mqeCfk8p3usXK6ybcagzev63ULVukzszI sY1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=HzRU1ozCvifY6J0qAE+2jJ3JxrolEuTI7i1JJUCoGUo=; b=UfvdI/EB8s9nysr6qS4smW/jYj7LvbeX1LfBskloQ7H7WwL6mXHuRvCEL9Ztjl6Iyh W3AvoYGBC2UmtMxkuopsW6rCLfujURDzQ4Cn/FwOVlpb1uGT42d3Lsc25NPosLMnfV4w Fo2tKteP/ow+zxeiDucSwqqsrWPf9Onpe3XbuOFBcRzPJq9ofxp/oaHHJy8fha74B4V2 MAjeZgsM0iMHnedc+TFWTlbs3ZoDWPDcfAOwtvz5EtBcUhDP0gxVJmUgQncsoiFE04BQ UB7t8N6/v4RCX0FpZHFLZgJwAxEytwa+0uAj6ijY59SyI2AaOpkMLp4MhDRQ1jbstJyd ouOQ== X-Gm-Message-State: APjAAAVVcZMCpP+aUqI4Ew6Ai/RwMKe4Cpzxr58gZAZHsqeltahYU7Jg Pa+wObg8JKXHAZpLO4KUZxY= X-Google-Smtp-Source: APXvYqzEapSR5PYlZurH/fZd0sgRbV4yjSDTqL9wZDaOn6xcciN6vCo7au9H0aRrNsNl+cJuMWCrxw== X-Received: by 2002:a62:1958:: with SMTP id 85mr1930027pfz.221.1582855698458; Thu, 27 Feb 2020 18:08:18 -0800 (PST) Received: from taoren-ubuntu-R90MNF91.thefacebook.com ([2620:10d:c090:500::4:d8f5]) by smtp.gmail.com with ESMTPSA id k24sm4931972pgm.61.2020.02.27.18.08.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Feb 2020 18:08:18 -0800 (PST) From: rentao.bupt@gmail.com To: Felipe Balbi , Greg Kroah-Hartman , Joel Stanley , Andrew Jeffery , Benjamin Herrenschmidt , Chunfeng Yun , Colin Ian King , Stephen Boyd , Rob Herring , Mark Rutland , linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org, taoren@fb.com Cc: Tao Ren Subject: [PATCH v6 7/7] dt-bindings: usb: add documentation for aspeed usb-vhub Date: Thu, 27 Feb 2020 18:07:57 -0800 Message-Id: <20200228020757.10513-8-rentao.bupt@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200228020757.10513-1-rentao.bupt@gmail.com> References: <20200228020757.10513-1-rentao.bupt@gmail.com> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Tao Ren Add device tree binding documentation for the Aspeed USB 2.0 Virtual HUb Controller. Signed-off-by: Tao Ren Reviewed-by: Joel Stanley --- Changes in v6: - added 2 required properties into example and passed "make dt_binding_check". Changes in v5: - updated maintainer to Ben. - refined patch description per Joel's suggestion. No change in v2/v3/v4: - the patch is added to the patch series since v4. .../bindings/usb/aspeed,usb-vhub.yaml | 73 +++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/aspeed,usb-vhub.yaml diff --git a/Documentation/devicetree/bindings/usb/aspeed,usb-vhub.yaml b/Documentation/devicetree/bindings/usb/aspeed,usb-vhub.yaml new file mode 100644 index 000000000000..b9f33310e9a2 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/aspeed,usb-vhub.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (c) 2020 Facebook Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/aspeed,usb-vhub.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ASPEED USB 2.0 Virtual Hub Controller + +maintainers: + - Benjamin Herrenschmidt + +description: |+ + The ASPEED USB 2.0 Virtual Hub Controller implements 1 set of USB Hub + register and several sets of Device and Endpoint registers to support + the Virtual Hub's downstream USB devices. + + Supported number of devices and endpoints vary depending on hardware + revisions. AST2400 and AST2500 Virtual Hub supports 5 downstream devices + and 15 generic endpoints, while AST2600 Virtual Hub supports 7 downstream + devices and 21 generic endpoints. + +properties: + compatible: + enum: + - aspeed,ast2400-usb-vhub + - aspeed,ast2500-usb-vhub + - aspeed,ast2600-usb-vhub + + reg: + maxItems: 1 + description: Common configuration registers + + clocks: + maxItems: 1 + description: The Virtual Hub Controller clock gate + + interrupts: + maxItems: 1 + + aspeed,vhub-downstream-ports: + description: Number of downstream ports supported by the Virtual Hub + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + + aspeed,vhub-generic-endpoints: + description: Number of generic endpoints supported by the Virtual Hub + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + +required: + - compatible + - reg + - clocks + - interrupts + - aspeed,vhub-downstream-ports + - aspeed,vhub-generic-endpoints + +additionalProperties: false + +examples: + - | + #include + vhub: usb-vhub@1e6a0000 { + compatible = "aspeed,ast2500-usb-vhub"; + reg = <0x1e6a0000 0x300>; + interrupts = <5>; + clocks = <&syscon ASPEED_CLK_GATE_USBPORT1CLK>; + aspeed,vhub-downstream-ports = <5>; + aspeed,vhub-generic-endpoints = <15>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_usb2ad_default>; + };