From patchwork Tue Sep 4 21:34:12 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prakruthi Deepak Heragu X-Patchwork-Id: 10588025 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 780935A4 for ; Tue, 4 Sep 2018 21:35:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6942A28A96 for ; Tue, 4 Sep 2018 21:35:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5CA312A14E; Tue, 4 Sep 2018 21:35:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 004CD2A0A4 for ; Tue, 4 Sep 2018 21:35:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727421AbeIECCo (ORCPT ); Tue, 4 Sep 2018 22:02:44 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:35244 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727320AbeIECCn (ORCPT ); Tue, 4 Sep 2018 22:02:43 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 011E0607DD; Tue, 4 Sep 2018 21:35:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1536096944; bh=3EHbnm0EUfbzNzWmA7usrHpl+MlWqRRpA1waVcLexQk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OQIcBIdhqG2O/ljBtV95eVtJxAQ6zjyKOD45UYrjhQtxuVdM8UIr2R4d5WGYmpj0r 7FJzwaDX6/Y/L8kQeDaOYGRx3dSMfnwsgyXkdyG8fgiVq+UMdVx6Ks672m0wu4V9mU 2d8onYBkOWqzQck9rNEvtdwNOJ1aYXgaj9flShV4= Received: from pheragu-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pheragu@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 415C96063A; Tue, 4 Sep 2018 21:35:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1536096943; bh=3EHbnm0EUfbzNzWmA7usrHpl+MlWqRRpA1waVcLexQk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e2gQaGhcbjs+jSX6maJUpoC8si+r8Tti7eMKuNnNr6fYvSozUtnq34BBnb6cf+of/ 5IuqG/TDXrsO3DEzSwRPB2Al7Yb95wPghrUIPsq56UU9P4pTREYCrfBWBviA/e5c/s jByRrk8jPcjI+gVQdiOKb4XpgobDb40QACu4+yoI= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 415C96063A Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=pheragu@codeaurora.org From: Prakruthi Deepak Heragu To: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org, ckadabi@codeaurora.org, tsoni@codeaurora.org, rnayak@codeaurora.org, bryanh@codeaurora.org, psodagud@codeaurora.org, Prakruthi Deepak Heragu , Satya Durga Srinivasu Prabhala Subject: [PATCH v2 1/2] dt-bindings: Documentation for qcom,eud Date: Tue, 4 Sep 2018 14:34:12 -0700 Message-Id: <1536096853-30473-2-git-send-email-pheragu@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1536096853-30473-1-git-send-email-pheragu@codeaurora.org> References: <1536096853-30473-1-git-send-email-pheragu@codeaurora.org> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Documentation for Embedded USB Debugger (EUD) device tree bindings. Signed-off-by: Satya Durga Srinivasu Prabhala Signed-off-by: Prakruthi Deepak Heragu --- .../devicetree/bindings/soc/qcom/qcom,msm-eud.txt | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt new file mode 100644 index 0000000..a03021a --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt @@ -0,0 +1,41 @@ +* Qualcomm Technologies Inc Embedded USB Debugger (EUD) + +The EUD (Embedded USB Debugger) is a mini-USB hub implemented +on chip to support the USB-based debug and trace capabilities. + +Required properties: + + - compatible: Should be "qcom,msm-eud" + - interrupts: Interrupt number + - reg: Should be address and size of EUD register space + +Driver notifies clients for VBUS attach/detach and charger enable/disable +events. The link between client and EUD is established via a directed +graph. EUD driver has one endpoint of the graph link mentioning EUD as an +output link and clients registered for these notifications from the EUD +should have the other endpoint of the graph link as an input link. Each of +these endpoints should contain a 'remote-endpoint' phandle property that +points to the corresponding endpoint in the port of the remote device. + +An example for EUD device node: + + eud: qcom,msm-eud@88e0000 { + compatible = "qcom,msm-eud"; + interrupts = ; + reg = <0x88e0000 0x4000>; + port { + eud_output: endpoint { + remote-endpoint = <&usb3_input>; + }; + }; + }; + +An example for EUD client: + + usb3 { + port { + usb3_input: endpoint { + remote-endpoint = <&eud_output>; + }; + }; + };