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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27176C433F5 for ; Tue, 5 Oct 2021 18:45:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 02B3C611C3 for ; Tue, 5 Oct 2021 18:45:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231858AbhJESrm (ORCPT ); Tue, 5 Oct 2021 14:47:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49608 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229626AbhJESrm (ORCPT ); Tue, 5 Oct 2021 14:47:42 -0400 Received: from mail-ot1-x331.google.com (mail-ot1-x331.google.com [IPv6:2607:f8b0:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A46AAC06174E for ; Tue, 5 Oct 2021 11:45:51 -0700 (PDT) Received: by mail-ot1-x331.google.com with SMTP id 77-20020a9d0ed3000000b00546e10e6699so160824otj.2 for ; Tue, 05 Oct 2021 11:45:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=mime-version:in-reply-to:references:from:user-agent:date:message-id :subject:to:cc; bh=OHTvFeyJP3J+uo/9wz+ahOIzpwEg9uJmeumv+TyQfVM=; b=KlgpGE95LIxZlb/pXE9cZu9nugQIb8LshfOewuCbEuACzl+rQB1xWDjBU3mPOLrDcW j5C+gbD94hGL4uSgBoXfUM5rt42vBONs9pSviN0hEYnzNWeOvmPxCoa6eWbHPVH7pzq8 9uUd3ccnAK2NsO+petzbwloyc4I76262QBVaU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:in-reply-to:references:from :user-agent:date:message-id:subject:to:cc; bh=OHTvFeyJP3J+uo/9wz+ahOIzpwEg9uJmeumv+TyQfVM=; b=ixDi4Fqp7eQxXiKAPedzXZke/cRyBhMhP306uBs1fait5kBK1TOnUNm4TOnsyYhIoT LD8yIb4E8vCWwLmlqXLXdwjvuyNNddyCpKtTicf3BEp2SJsLySYrvLfEz/gZ25fDc/7G cIpEOywSmBQcDvF+ZCAfI6gZJdXHNZk2eTJhkwvSfk1GMW3HAsXoZyrdkME9EzrryfiZ yAJFe7s9eXXbeSnKD+IcRYWH1xDabKEWx1FEA2w4+nVlfpBwnwx7HurS6j3fgKo1sqk3 Q362OB3feMOhwQI/pB88TqfB7bs6gS5oYnDoHL+ZvtoHQUNDlJ2y/W4xYTnUpki1dA6Z 5oVw== X-Gm-Message-State: AOAM531fY5hBxS1eWlFVh6qKDGzA9c9EU79hdXEpyl0hfn5tqkpmJvUK b465M0RWhRR4V2GoqWO/HF6mwceOSrEQsPZOePLbUQ== X-Google-Smtp-Source: ABdhPJzA4iPXbH8yz7UdLkbyMSd1FJG8yE9lKOiGiI04UiNVk5/3sbM0WRNEBTKxB3XmF+4HfBHW7j8fmcgm3mYJLEA= X-Received: by 2002:a9d:6a0f:: with SMTP id g15mr16240694otn.126.1633459551057; Tue, 05 Oct 2021 11:45:51 -0700 (PDT) Received: from 753933720722 named unknown by gmailapi.google.com with HTTPREST; Tue, 5 Oct 2021 11:45:50 -0700 MIME-Version: 1.0 In-Reply-To: <20211005023750.2037631-1-bjorn.andersson@linaro.org> References: <20211005023750.2037631-1-bjorn.andersson@linaro.org> From: Stephen Boyd User-Agent: alot/0.9.1 Date: Tue, 5 Oct 2021 11:45:50 -0700 Message-ID: Subject: Re: [PATCH] drm/msm/dp: Shorten SETUP timeout To: Abhinav Kumar , Bjorn Andersson , Daniel Vetter , David Airlie , Dmitry Baryshkov , Kuogee Hsieh , Rob Clark , Sean Paul Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Sankeerth Billakanti Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Quoting Bjorn Andersson (2021-10-04 19:37:50) > Found in the middle of a patch from Sankeerth was the reduction of the > INIT_SETUP timeout from 10s to 100ms. Upon INIT_SETUP timeout the host > is initalized and HPD interrupt start to be serviced, so in the case of > eDP this reduction improves the user experience dramatically - i.e. > removes 9.9s of bland screen time at boot. > > Suggested-by: Sankeerth Billakanti > Signed-off-by: Bjorn Andersson > --- Any Fixes tag? BTW, the delay design is pretty convoluted. I had to go re-read the code a couple times to understand that it's waiting 100ms times the 'delay' number. Whaaaaat? Reviewed-by: Stephen Boyd