From patchwork Thu Oct 22 05:15:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thinh Nguyen X-Patchwork-Id: 11850273 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 0606214B7 for ; Thu, 22 Oct 2020 05:15:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D05872145D for ; Thu, 22 Oct 2020 05:15:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=synopsys.com header.i=@synopsys.com header.b="abmLuYPd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2507852AbgJVFPq (ORCPT ); Thu, 22 Oct 2020 01:15:46 -0400 Received: from smtprelay-out1.synopsys.com ([149.117.87.133]:42630 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2444222AbgJVFPq (ORCPT ); Thu, 22 Oct 2020 01:15:46 -0400 Received: from mailhost.synopsys.com (sv1-mailhost2.synopsys.com [10.205.2.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id 78B3AC026E; Thu, 22 Oct 2020 05:15:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1603343745; bh=nTPdEZ2enkeB1WuU/L+M60LEJY7TTeAXK4W7ufmjOgI=; h=Date:From:Subject:To:Cc:From; b=abmLuYPdh2xTN0ceQG+1+/FrpFxN6HCcHaHX3q7+RdQ+n9s5Pjr9XlVWA84UbqvFY KAI2iKB/I/ekU3K0hOv5alPoSXEKYbn3dXJtqqY0+b9YY7/sTukYF0N/cUUz30xCcl 5XtO1OXYc93m1nq52Siz/YTmIQ6cJl3q8TUSX4HyudNHVgqR81IJkVGSNvqkHnUgAs BLvcgXSuBNAUWqb8bgbQOJsvRAILMshVG9+3BjwUZ47cvr+hGyQYLnTEEawfXvMy2j Hzi0bHCfHEmybbU9alPtH4hKAyOf0/rFJ9DEH+j5cREcsFfY0x2m9aRNX9bioueljy nvrkJgpKtxtuw== Received: from te-lab16 (nanobot.internal.synopsys.com [10.10.186.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mailhost.synopsys.com (Postfix) with ESMTPSA id 07B55A0072; Thu, 22 Oct 2020 05:15:43 +0000 (UTC) Received: by te-lab16 (sSMTP sendmail emulation); Wed, 21 Oct 2020 22:15:43 -0700 Date: Wed, 21 Oct 2020 22:15:43 -0700 Message-Id: <770d7a50caad241f07d656e29e89e282f727f5da.1603343705.git.Thinh.Nguyen@synopsys.com> X-SNPS-Relay: synopsys.com From: Thinh Nguyen Subject: [RFC PATCH 1/3] dt-bindings: usb: Add undetected disconnection quirk To: Greg Kroah-Hartman , linux-usb@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring Cc: John Youn Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Synopsys DWC_usb3x host controllers will not detect enhanced super-speed (eSS) device disconnection if it has active isochronous IN endpoint(s) behind one or more eSS hubs. Introduce a quirk to workaround this for xhci and dwc3 device tree. Signed-off-by: Thinh Nguyen --- Documentation/devicetree/bindings/usb/dwc3.txt | 3 +++ Documentation/devicetree/bindings/usb/usb-xhci.txt | 2 ++ 2 files changed, 5 insertions(+) base-commit: 270315b8235e3d10c2e360cff56c2f9e0915a252 diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt index 1aae2b6160c1..b23b52f5842a 100644 --- a/Documentation/devicetree/bindings/usb/dwc3.txt +++ b/Documentation/devicetree/bindings/usb/dwc3.txt @@ -105,6 +105,9 @@ Optional properties: this and tx-thr-num-pkt-prd to a valid, non-zero value 1-16 (DWC_usb31 programming guide section 1.2.3) to enable periodic ESS TX threshold. + - snps,blocked-disconnection: enable workaround to undetected disconnection + while isoc endpoint(s) are active for DWC_usb3x + controllers operating as host - tx-fifo-resize: determines if the FIFO *has* to be reallocated. - snps,incr-burst-type-adjustment: Value for INCR burst type of GSBUSCFG0 diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt b/Documentation/devicetree/bindings/usb/usb-xhci.txt index 0c5cff84a969..60812ae74d46 100644 --- a/Documentation/devicetree/bindings/usb/usb-xhci.txt +++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt @@ -28,6 +28,8 @@ Optional properties: - quirk-broken-port-ped: set if the controller has broken port disable mechanism - imod-interval-ns: default interrupt moderation interval is 5000ns - phys : see usb-hcd.yaml in the current directory + - blocked-disconnection: workaround undetected disconnection while isoc + endpoint(s) are active additionally the properties from usb-hcd.yaml (in the current directory) are supported.