From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59543C47255 for ; Fri, 8 May 2020 22:52:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35E2621974 for ; Fri, 8 May 2020 22:52:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fQr+nYI0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728295AbgEHWw1 (ORCPT ); Fri, 8 May 2020 18:52:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727110AbgEHWw1 (ORCPT ); Fri, 8 May 2020 18:52:27 -0400 Received: from mail-wm1-x344.google.com (mail-wm1-x344.google.com [IPv6:2a00:1450:4864:20::344]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C4F49C061A0C; Fri, 8 May 2020 15:52:26 -0700 (PDT) Received: by mail-wm1-x344.google.com with SMTP id u16so12386010wmc.5; Fri, 08 May 2020 15:52:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=WpsbmFr34r/z7Vvaga9c8bP7hFD8XFkqa4vrJTCUU20=; b=fQr+nYI08FQGL6H7MhUIYs3wQMkrKzGrnCfxvarT/AQ1+Jqx3KP5k0RV5ahRZD0iyv Z78MUzNujRRXrW8yMSkfilrGEtybvnZnWiy/oOgoZB/fUu61ycAB0w835U80dVED+H6q ZATeJJtqA7PDiEZUXdvWMANoFya+nDiQenPZLQxVpRT1xgwNPdcEIpelD+F1McDQGCHY DTvG+KF/5kuK0G95Gcfpz9RZzA87WIvkm9rAQLfBN34aBnGifHaLYNSAcA8Ct9ijudWU J8sJukrlABsIeI3Zr+axhf5K0vhd6pyOSednFrul+mb9DOkGUlBiDBUKdTKI70GV7ug5 vQPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=WpsbmFr34r/z7Vvaga9c8bP7hFD8XFkqa4vrJTCUU20=; b=oIStivhJn2ajRrhUjrT9XzNrYj4OzFrfYwAtd53GuswafoNGCh3Frtqz8EDrJP5mkK cg34FOajOUG6/iCBNduWrvC1oyPy0RIuDJvkWLrxdxIgeQQH2Nj1ZEIBshPU6y9IWt2v /zz2WInIhQgkntX7WalnVQ2v72bSG/zpSL0UXXzGgZPU9BfphAMtfQzDYVrom6gwhUNw dbBmlX1yLw2YDOsIs52L/eyMDcTm3bci5P2OPjzCu7YEYWJLSEQVJwfIlhCovcJ3Xfcw GJX9itpezInP19XIf2HC1P/x5rb9qoDC8fXPIRibEeWD7ZXHyivV4gkhmEW/SprgGOC0 eNAg== X-Gm-Message-State: AGi0PuZJFEyoa6KXMBdBBJD9JzjIhpp+6GEvfNIeJu0/nstg677UwzpO dG4xygzsWZ2vN/z4zTwjkjg= X-Google-Smtp-Source: APiQypIhiz+fO+JBgPd6XJG0+lXiYaWerz9NVH6QhBdEQPz2qjDHpCnnr1/84JwAGMVPjcNUEwwEzw== X-Received: by 2002:a7b:c250:: with SMTP id b16mr19405733wmj.100.1588978345157; Fri, 08 May 2020 15:52:25 -0700 (PDT) Received: from [10.230.188.43] ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id x7sm14618291wmi.17.2020.05.08.15.52.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 08 May 2020 15:52:24 -0700 (PDT) Subject: Re: [PATCH v8 4/5] usb: ehci: Add new EHCI driver for Broadcom STB SoC's To: Al Cooper , linux-kernel@vger.kernel.org Cc: Alan Stern , Andy Shevchenko , bcm-kernel-feedback-list@broadcom.com, devicetree@vger.kernel.org, Greg Kroah-Hartman , Krzysztof Kozlowski , linux-usb@vger.kernel.org, Mathias Nyman , Rob Herring , Yoshihiro Shimoda , Andy Shevchenko References: <20200508211929.39020-1-alcooperx@gmail.com> <20200508211929.39020-5-alcooperx@gmail.com> From: Florian Fainelli Message-ID: <20f7eed5-4364-3466-05d4-1e350abeac88@gmail.com> Date: Fri, 8 May 2020 15:52:21 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Firefox/68.0 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200508211929.39020-5-alcooperx@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/8/2020 2:19 PM, Al Cooper wrote: > Add a new EHCI driver for Broadcom STB SoC's. A new EHCI driver > was created instead of adding support to the existing ehci platform > driver because of the code required to workaround bugs in the EHCI > controller. The primary workround is for a bug where the Core > violates the SOF interval between the first two SOFs transmitted after > resume. This only happens if the resume occurs near the end of a > microframe. The fix is to intercept the echi-hcd request to complete > RESUME and align it to the start of the next microframe. > > Signed-off-by: Al Cooper > Reviewed-by: Andy Shevchenko Reviewed-by: Florian Fainelli -- Florian