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=-2.1 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 0E968C6778A for ; Mon, 9 Jul 2018 07:39:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BF23A208AF for ; Mon, 9 Jul 2018 07:39:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ffwll.ch header.i=@ffwll.ch header.b="Yb6hs5T1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BF23A208AF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ffwll.ch Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932738AbeGIHj3 (ORCPT ); Mon, 9 Jul 2018 03:39:29 -0400 Received: from mail-ed1-f66.google.com ([209.85.208.66]:44706 "EHLO mail-ed1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932427AbeGIHj2 (ORCPT ); Mon, 9 Jul 2018 03:39:28 -0400 Received: by mail-ed1-f66.google.com with SMTP id d17-v6so1071688eds.11 for ; Mon, 09 Jul 2018 00:39:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=sender:date:from:to:cc:subject:message-id:mail-followup-to :references:mime-version:content-disposition:in-reply-to:user-agent; bh=FXKRWFspG0VbG5SDSAlkeui09UV6gyzuR7XW3qh8rY8=; b=Yb6hs5T15h80Ac8hntcChYG3qmvZi/ErsD00FxwFfJhazDvCoLy7sy4KHZaJaBloiB DwpZqE6hARb52vN2xPe9lLlvyPsDGKL7QgvEwAwjN6ScwUHRfoMmXNrtBS5alx8ay0bg eYD5Bn4jkDA/Nnyp/nDMX+jey6DjcL8IeqIk8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :mail-followup-to:references:mime-version:content-disposition :in-reply-to:user-agent; bh=FXKRWFspG0VbG5SDSAlkeui09UV6gyzuR7XW3qh8rY8=; b=Z4VJqSPxOMBf4h8z/k9UtgDE66+rulH2jbHN/4jSKIp1GnKSC+UN9tYgNpfcrbe+16 6g4Jxeqale+ltcq7zF4eWnCRVbDbcOHBiA8HzCxRpdixj/16nV9fUbBICM1LrXWoIFNX CAwiu9zt4Hr2zkmqNYr6AKTyMU2fjBWv8pgG34XmG/qH1y9bYzi4Mcg998hpTvVv5PRo 6dkxXTG4buWEfvL74WbvruLCL+yJYA3FTJzu1VJPbpSXWGfn9m12FfJBibhTTJpqZqLB weVN6H/i6WyMMDjgMbE8zGMClJAQ1Tkz1d3qy6k5PbtQsn3TBkTZ1ZujW9KZwynAMhdr orLQ== X-Gm-Message-State: APt69E1DkAIxl/mV4HPBLdrQQKHb9wu294rBXwjL8pe/qPGRFhLPi41C lAoVKZfstKbAKVRjZlAtng+76A== X-Google-Smtp-Source: AAOMgpd7x30aSDA6O4DfR57IOgM9fbGwtd1PZvXLHhduPkGHS8eWjze23gz4TojmB3oNHZtjdTGFQg== X-Received: by 2002:a50:aba3:: with SMTP id u32-v6mr21205752edc.69.1531121966971; Mon, 09 Jul 2018 00:39:26 -0700 (PDT) Received: from phenom.ffwll.local ([2a02:168:5628:0:496f:7dc5:66d7:a057]) by smtp.gmail.com with ESMTPSA id d18-v6sm5938165eds.40.2018.07.09.00.39.25 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 09 Jul 2018 00:39:26 -0700 (PDT) Date: Mon, 9 Jul 2018 09:39:24 +0200 From: Daniel Vetter To: Adam Jackson Cc: Gerd Hoffmann , dri-devel@lists.freedesktop.org, David Airlie , Dave Airlie , open list , "open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE" Subject: Re: [PATCH] drm/cirrus: flip default to 32bpp Message-ID: <20180709073924.GB3008@phenom.ffwll.local> Mail-Followup-To: Adam Jackson , Gerd Hoffmann , dri-devel@lists.freedesktop.org, David Airlie , Dave Airlie , open list , "open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE" References: <20180706091249.25086-1-kraxel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Operating-System: Linux phenom 4.14.0-3-amd64 User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 06, 2018 at 02:35:07PM -0400, Adam Jackson wrote: > On Fri, 2018-07-06 at 11:12 +0200, Gerd Hoffmann wrote: > > cirrus can handle 1024x768 (and slightly higher) with 24bpp depth. > > cirrus can handle up to 800x600 with 32bpp. > > 16bpp is maybe a better choice? Nobody's using cirrus because they care > about color fidelity and it'll use less CPU to update. There's > precedent here, mgag200 defaults to 16bpp on sufficiently memory- > impaired devices. Yeah nouveau does the same fallback to 16bpp if there's not enough vram. So do a bunch of other drivers. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch