From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3605C40245C for ; Tue, 24 Mar 2026 15:25:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774365949; cv=pass; b=Qh0tw/TpRqQazjehh1Q9K8kEa/6uNjDcX2x1MRViPd80cy05sahJYV0iChKcZG+Sq9SrR2OWq88dz7pvdH+4SKTWJJhM1u1I34WVyEnIah4ro/1NxLWcJFgHINvjIIPgKoQr3R1A8NiYjz4mT2yVhf+4ZRNMQ+RjIbnVqS/qAwU= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774365949; c=relaxed/simple; bh=MWYjgfX6VpVyfxxQYgJCWmWSXFOd4Jy+zVQGptpNyRU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=TmxwKS+/Ta2g7OiDCZIVzGo+7rLiocrQvN8AK78CNINeHR+N0koM3OgNYN00FUmku6PYa5J0HgAg/+IOSOMSaAluWnRd1zmgwEac9Gv4CDH8WZnWfUgVt4qRCWe3cHWxyYs7Ni9MQslEK4aNjSZD+db8twvRmLiipCdG/QdljA8= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b=W7b9Dzg8; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b="W7b9Dzg8" ARC-Seal: i=1; a=rsa-sha256; t=1774365913; cv=none; d=zohomail.com; s=zohoarc; b=FHAKaU6BZH80IYFqEa3eAOZmceU7Hw+oHbexTK3eflxpH++56aFzspdGD7Fc12ynCOXfZQVJd9bcZWjwCFjsDJdXd/qtZatHC1Rud+V5OMP1eY3nO8BK1jkBLSVt4romPtgiJT6VcoNkg3hN76JhnHASYpkhGEYe0kg182x0twQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1774365913; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=MWYjgfX6VpVyfxxQYgJCWmWSXFOd4Jy+zVQGptpNyRU=; b=cuBVRg8nYCe9MzDT4bLrQ7fGmsLUudcZXpvvDk38PwW+lH4miAfyy83W0sHiPNHhxgO6MQ+El0w0S3e1iv3+uAqkxGZkh0lz2yrPy8qgzrzBWE6jsNiWUKTyRTfmRyXx+wcA4jAnFLGmgXbVYXgVQo4iLMD91DRQUOLchrS28rI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=nicolas.frattaroli@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1774365913; s=zohomail; d=collabora.com; i=nicolas.frattaroli@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Content-Type:Message-Id:Reply-To; bh=MWYjgfX6VpVyfxxQYgJCWmWSXFOd4Jy+zVQGptpNyRU=; b=W7b9Dzg87cNtQZjUxQcIWP5d1fUlh74bGCuiDBpP7e1E7x+QckPPaaRL/YfpIHEY fr0OC1PYoNrmYBhJYsupkxZMdNtmuVq4nvkaiubS40pMBY1AIpRiXLCJinL7o4CivQT kYMBx9OBcg7SfRKOcdYRLXUEPo2cn2bjEgZMd/kk= Received: by mx.zohomail.com with SMTPS id 1774365912399120.92841279798449; Tue, 24 Mar 2026 08:25:12 -0700 (PDT) From: Nicolas Frattaroli To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , Christian =?UTF-8?B?S8O2bmln?= , Ville =?UTF-8?B?U3lyasOkbMOk?= , Daniel Stone , Dmitry Baryshkov , Michel =?UTF-8?B?RMOkbnplcg==?= Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, kernel@collabora.com, Derek Foreman , Marius Vlad Subject: Re: [PATCH v5 0/3] Add "link bpc" DRM property Date: Tue, 24 Mar 2026 16:25:05 +0100 Message-ID: <4265353.aeNJFYEL58@workhorse> In-Reply-To: References: <20260319-link-bpc-v5-0-5306cd04a708@collabora.com> <8676926.T7Z3S40VBb@workhorse> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" On Monday, 23 March 2026 18:27:41 Central European Standard Time Michel D= =C3=A4nzer wrote: > On 3/23/26 17:55, Nicolas Frattaroli wrote: > > > > "Someone might not understand its purpose" is, in my eyes, not a valid = reason to > > not have this property, [...] > Per my previous posts, that's not my concern. >=20 >=20 >=20 Then what is your concern? That the link-bpc property does not consider DSC and dithering? Two things which the max-bpc property also does not consider? Please clearly state where your problem with this property is (and not with how your understanding of the Weston MR uses it) so that I can make forward progress here. If all you want is a clearer description of the property in the comment that accompanies it, then I can do that, and I said I agree with this point. But you seem to be arguing from a position of not wanting the property to exist at all, which is not something I can address. Userspace needs a way to close the feedback loop here, or it won't be able to make the right content-specific trade-offs. Kind regards, Nicolas Frattaroli