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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFDA3C433EF for ; Tue, 1 Feb 2022 03:51:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233208AbiBADvr (ORCPT ); Mon, 31 Jan 2022 22:51:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231984AbiBADvm (ORCPT ); Mon, 31 Jan 2022 22:51:42 -0500 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 22E95C061714 for ; Mon, 31 Jan 2022 19:51:42 -0800 (PST) Received: by mail-ot1-x330.google.com with SMTP id s6-20020a0568301e0600b0059ea5472c98so14963667otr.11 for ; Mon, 31 Jan 2022 19:51:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=RwCJ9hsr7K8u4lScvyqLshgsHaCbHyGZzuvtWtgyQhk=; b=W/QeLuCExljnv+CgrUxbXAs3XEeKWZ8rl6XrNIq1eFyWpdrTb+tFCq3TopqOgLpk4m B0egCwsR8NYgiW3xtg8pT+VdahFhPJYh7zIOaB2oqy+B9/ac8BeN7pLfY5sKT2nc93aU 6jX0n3f4Z7rpaOFLQdVWswntJe2MvkaNK+vFyKYzhLFcwcbqoS056ui8qZrDju+3GZbe R1p/YAzPyXaBwcHwZApsp5Or+JeU7CNJ8WGt5XdSSMt/Ljp6MYAMtVkLJqeJZ2GXQJsC EL36wmFdryie/kaqRwmRZ1rzOAdo5jKBEJ9BS0w64YQFpRaEaB+bNQgbdPHK1DJPtF2W FFyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=RwCJ9hsr7K8u4lScvyqLshgsHaCbHyGZzuvtWtgyQhk=; b=cGE2XPGSMhxXTlNDs/JLfXZ+KvLKG7ddc/dmhOy9qUN2NOSF4uvEVvE94CWqrHQRWs QOBh/L0kbqE/nzQtoa8L46GZ/8QRpkHV3NlHHjnJLdyJIEQAPYhF/DzVbBNwMZako6k9 N9XX6Kw5XN27qn6GMprGJWNUjAXIbgikX+mhAfzRXj4pWGUkZLuiIc/J/18dn8J/EwKI ET+7+hwRW0EqgzUsMjcRz+vAy/LV6p+3zr0F92TfGVadu6u40ZUfcDt5upDlbkv01Ww2 wwMhxnATgHKNr9IIASVbkDQ3ZSr9GOalYE7XJVz23s2/rz+0OoxhD4ZwtLYfesBjUd3x M9JA== X-Gm-Message-State: AOAM530iY3FOJ60wlCe4v/abIDl+ICMpzVLDjfdf9EyPolL02l6l7q+Z t5JNEGTlxcZRIxkF+K70mVk6xQ== X-Google-Smtp-Source: ABdhPJzlVbKkZvspjBMNPX/2jwwSYJ4UGETyWaSGL5Z6yUDRuLU1XIP91aNhSXJlSr73jp6k3OJsKw== X-Received: by 2002:a9d:d72:: with SMTP id 105mr13424096oti.340.1643687501469; Mon, 31 Jan 2022 19:51:41 -0800 (PST) Received: from ripper ([2600:1700:a0:3dc8:205:1bff:fec0:b9b3]) by smtp.gmail.com with ESMTPSA id y3sm16901825oix.41.2022.01.31.19.51.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 Jan 2022 19:51:40 -0800 (PST) Date: Mon, 31 Jan 2022 19:52:00 -0800 From: Bjorn Andersson To: Kuogee Hsieh Cc: robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org, vkoul@kernel.org, daniel@ffwll.ch, airlied@linux.ie, agross@kernel.org, dmitry.baryshkov@linaro.org, quic_abhinavk@quicinc.com, aravindh@codeaurora.org, freedreno@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drm/msm/dp: add wide bus support Message-ID: References: <1643390945-10813-1-git-send-email-quic_khsieh@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1643390945-10813-1-git-send-email-quic_khsieh@quicinc.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri 28 Jan 09:29 PST 2022, Kuogee Hsieh wrote: > Normally, mdp will push one pixel of data per pixel clock to > interface to display. Wide bus feature will increase bus > width from 32 bits to 64 bits so that it can push two > pixel of data per pixel clock to interface to display. > This feature is pre requirement to support 4k resolution. > Can you please elaborate further how this is a requirement for 4k resolution, given that I write you this question on a 4k monitor. Regards, Bjorn