From patchwork Wed Jun 8 17:36:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harsh Agarwal X-Patchwork-Id: 580578 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 575CBC43334 for ; Wed, 8 Jun 2022 17:37:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231705AbiFHRhc (ORCPT ); Wed, 8 Jun 2022 13:37:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229796AbiFHRha (ORCPT ); Wed, 8 Jun 2022 13:37:30 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 512F25F42; Wed, 8 Jun 2022 10:37:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654709849; x=1686245849; h=from:to:cc:subject:date:message-id:mime-version; bh=21IIOGXdaLFBsoy9KUo4UnP7mqlWFh0ei5tBh9pou7M=; b=eoVADO/uOw+irwPjZ53x+pxeWi3k89LV9juRPJPtndJZ2uLdkIFKuYPz vTHaOyLBszL7I+btKMhB0TE3UywH5jVjHTnii0OrdEBsNW38tZp+Sevc1 AjrT5q68Fyed73qKjgqiKDFFSz+XxGsKBqEm2+w0rOudV5+uT4r3aj/E1 o=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 08 Jun 2022 10:37:29 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Jun 2022 10:37:28 -0700 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 15.2.986.22; Wed, 8 Jun 2022 10:37:28 -0700 Received: from hu-harshq-hyd.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 15.2.986.22; Wed, 8 Jun 2022 10:37:23 -0700 From: Harsh Agarwal To: Greg Kroah-Hartman , Rob Herring , Philipp Zabel , "Krzysztof Kozlowski" , Felipe Balbi , Bjorn Andersson CC: , , , , , , , Harsh Agarwal Subject: [PATCH v3 0/3] Add support for multiport controller Date: Wed, 8 Jun 2022 23:06:24 +0530 Message-ID: <1654709787-23686-1-git-send-email-quic_harshq@quicinc.com> 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 Currently the DWC3 driver supports only single port controller which requires at most two PHYs ie HS and SS PHYs. There are SoCs that has DWC3 controller with multiple ports that can operate in host mode. Some of the port supports both SS+HS and other port supports only HS mode. This change refactors the PHY logic to support multiport controller. The implementation has been tested with Generic PHYs as well. For any multiport controller we would define a new node "multiport" inside dwc3 and then add subsequent "mport" nodes inside it for individual ports that it supports. Now each individual "mport" node defines their own PHYs. e.g. Consider a Dual port controller where each port supports HS+SS multiport { mp_1: mport1 { usb-phy = , ; /* Can define Generic PHYs also */ }; mp_2: mport2 { usb-phy = , ; }; Changes in v3: Incase any PHY init fails, then clear/exit the PHYs that are already initialized. Changes in v2: Changed dwc3_count_phys to return the number of PHY Phandles in the node. This will be used now in dwc3_extract_num_phys to increment num_usb2_phy and num_usb3_phy. Added new parameter "ss_idx" in dwc3_core_get_phy_ny_node and changed its structure such that the first half is for HS-PHY and second half is for SS-PHY. In dwc3_core_get_phy, for multiport controller, only if SS-PHY phandle is present, pass proper SS_IDX else pass -1. Harsh Agarwal (3): dt-bindings: usb: dwc3: Add support for multiport related properties usb: phy: Add devm_of_usb_get_phy_by_phandle usb: dwc3: Refactor PHY logic to support Multiport Controller .../devicetree/bindings/usb/snps,dwc3.yaml | 53 +++ drivers/usb/dwc3/core.c | 429 +++++++++++++++------ drivers/usb/dwc3/core.h | 12 +- drivers/usb/dwc3/drd.c | 16 +- drivers/usb/dwc3/gadget.c | 4 +- drivers/usb/phy/phy.c | 34 ++ include/linux/usb/phy.h | 8 + 7 files changed, 426 insertions(+), 130 deletions(-)