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[23.128.96.18]) by mx.google.com with ESMTP id nc23si32427013ejc.83.2021.07.22.12.19.57; Thu, 22 Jul 2021 12:20:21 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@chromium.org header.s=google header.b=D+iysSmf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=chromium.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230261AbhGVSfS (ORCPT + 99 others); Thu, 22 Jul 2021 14:35:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230216AbhGVSfQ (ORCPT ); Thu, 22 Jul 2021 14:35:16 -0400 Received: from mail-ot1-x330.google.com (mail-ot1-x330.google.com [IPv6:2607:f8b0:4864:20::330]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E89C6C061575 for ; Thu, 22 Jul 2021 12:15:50 -0700 (PDT) Received: by mail-ot1-x330.google.com with SMTP id s2-20020a0568301e02b02904ce2c1a843eso6276688otr.13 for ; Thu, 22 Jul 2021 12:15:50 -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=EusEYbQ13bFWsLQf0HYpb/wdiNyPX9L+F2ViR+RO33Y=; b=D+iysSmfAuVRkVd1YCYohemSgnbS7Iy5ZzkvKR3YyklHA+zasDTCgz+zlrYctzR1wL XdFzJdjD60jMBjjnHX03lBmHM5x+f8uWfK8s2/CYBx5lCppC463LwBRMfxza0K3f/wWy UfdzO0P+5ciJiKjBzO/O61wwUDVvT2F8Pd+xc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from :user-agent:date:message-id:subject:to:cc; bh=EusEYbQ13bFWsLQf0HYpb/wdiNyPX9L+F2ViR+RO33Y=; b=QZvEwqUNGcVY7nr4Ed+e6esaeSetOrqNX0AeZoINELziqSoGYTsg02OHulxL8VJTMV 5DPne/yl77WBqjSDMMYHPm7hByEr9cq5tx/AsSUL8E1BL45/Qk2VpF9fq1n9tQ18Mgfp 8Rwo2JoDpZLGuPYrsnHIJTOb5fofV3wNnJqNDmWnQfKkkCZTjzIV/ILUSuY365SSrPn8 315uWdRhEA3lhigWmzNAp0S51/oRHVwRB1Q6BQLI5SwxnZi6DyH+kbg9kmI/HtCUt4C0 DqbP3Cq0ukUuS24MC+A4iEkj2bmBLNNOutzI2m1hfKCTsjPv9cRcwdY9iBjIANjENcjq xnIg== X-Gm-Message-State: AOAM531hV1e5JsGVjMZ4pz+O178zYUjQrdP4G4Yz8Xf+fMLjERRxZaey wPm+0H8FtLgW/Adz6bqHRloxEAFLEHgTOpuJGJMmNQ== X-Received: by 2002:a9d:650e:: with SMTP id i14mr859418otl.233.1626981350381; Thu, 22 Jul 2021 12:15:50 -0700 (PDT) Received: from 753933720722 named unknown by gmailapi.google.com with HTTPREST; Thu, 22 Jul 2021 19:15:50 +0000 MIME-Version: 1.0 In-Reply-To: <1626191647-13901-7-git-send-email-khsieh@codeaurora.org> References: <1626191647-13901-1-git-send-email-khsieh@codeaurora.org> <1626191647-13901-7-git-send-email-khsieh@codeaurora.org> From: Stephen Boyd User-Agent: alot/0.9.1 Date: Thu, 22 Jul 2021 19:15:49 +0000 Message-ID: Subject: Re: [PATCH v2 6/7] drm/msm/dp: do not end dp link training until video is ready To: Kuogee Hsieh , dri-devel@lists.freedesktop.org, robdclark@gmail.com, sean@poorly.run Cc: abhinavk@codeaurora.org, aravindh@codeaurora.org, airlied@linux.ie, daniel@ffwll.ch, bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Quoting Kuogee Hsieh (2021-07-13 08:54:06) > Initialize both pre-emphasis and voltage swing level to 0 before > start link training and do not end link training until video is > ready to reduce the period between end of link training and video > start to meet Link Layer CTS requirement. This fixes Link Layer > CTS cases 4.3.2.1, 4.3.2.2, 4.3.2.3 and 4.3.2.4. > > Signed-off-by: Kuogee Hsieh > --- Any fixes tag? Reviewed-by: Stephen Boyd