From patchwork Thu Dec 2 09:51:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652079 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7EAF7C4321E for ; Thu, 2 Dec 2021 09:52:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356677AbhLBJ4J (ORCPT ); Thu, 2 Dec 2021 04:56:09 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:41185 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356667AbhLBJ4B (ORCPT ); Thu, 2 Dec 2021 04:56:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438760; x=1669974760; h=from:to:cc:subject:date:message-id:mime-version; bh=tC5LXKjUKwQxEKmuAm29KfJD1uoIp9cEC1FTYO6jNx0=; b=cNaKUN5m3J5HsuNAUK8rmgObCal5up7QQ503RjG4LJRjnRODARJpPuDE TJgTJ4hLPOLeno0s8E9Dz0F42PcZQ/jyU+fm7Gb56w1mkem8vshAbKOmK 1sRq95xkVnDBKUHP6A1Az9arP+8qDDhufiW5IXNTrKhv22gQ9MuRk09uW g=; Received: from ironmsg07-lv.qualcomm.com ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 02 Dec 2021 01:52:33 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg07-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2021 01:52:33 -0800 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Thu, 2 Dec 2021 01:52:32 -0800 Received: from blr-ubuntu-525.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Thu, 2 Dec 2021 01:52:27 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 0/8] Add Embedded USB Debugger (EUD) driver Date: Thu, 2 Dec 2021 15:21:19 +0530 Message-ID: X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This is a series of patches that implements a driver for the control peripheral, EUD (Embedded USB Debugger). The EUD is a mini-USB hub implemented on chip to support the USB-based debug and trace capabilities. Apart from debug capabilities, EUD has a control peripheral. Control Peripheral is on when EUD is on and gets signals like USB attach, pet EUD etc. EUD driver listens to events like USB attach or detach and then informs the USB about these events via ROLE-SWITCH. At regular intervals, the EUD driver receives an interrupt to pet the driver indicating that the software is functional. Changes in V2 *Fixed the yaml issue and also implemeted comments on yaml in V1. Changes in V1 * EUD has now been mapped as a separate DT node as it is an independent QCOM IP. * EUD is attached to the connector child of dwc3 via port end point since EUD driver needs the connector for role-switching. * EUD driver has been moved now to drivers/soc/qcom/qcom_eud.c. * All the comments from version 0 of the patch has been implemented. Souradeep Chowdhury (8): dt-bindings: Add the yaml bindings for EUD dt-bindings: connector: Add property for EUD type-C connector bindings: usb: dwc3: Update dwc3 properties for EUD connector usb: dwc3: drd: Register the eud connector child node for dwc3 soc: qcom: eud: Add driver support for Embedded USB Debugger(EUD) arm64: dts: qcom: sc7280: Add EUD dt node and dwc3 connector arm64: dts: qcom: sc7280: Set the default dr_mode for usb2 MAINTAINERS: Add maintainer entry for EUD Documentation/ABI/testing/sysfs-driver-eud | 9 + .../bindings/connector/usb-connector.yaml | 4 + .../devicetree/bindings/soc/qcom/qcom,eud.yaml | 50 ++++ .../devicetree/bindings/usb/snps,dwc3.yaml | 6 + MAINTAINERS | 8 + arch/arm64/boot/dts/qcom/sc7280-idp.dts | 4 + arch/arm64/boot/dts/qcom/sc7280.dtsi | 25 ++ drivers/soc/qcom/Kconfig | 10 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/qcom_eud.c | 268 +++++++++++++++++++++ drivers/usb/dwc3/drd.c | 26 ++ 11 files changed, 411 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-driver-eud create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml create mode 100644 drivers/soc/qcom/qcom_eud.c --- 2.7.4