From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 D130C2777F2 for ; Sat, 9 Aug 2025 09:09:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754730571; cv=none; b=CR7gXBK+9blpgAMzyNTFoIOotVI6jsngxB/UlqNqx/duQEk6EPq0VR1YkjKus8ht4u8IbQEqoZ5lxvp8Ga4vwOoVVzjcevzPhBmsAnmKRw6T+WJcCqUl4NGY9Q6ZLhPZo3pD7xahLA2sr9AYaDJ6h5arqUv+/4Sb7fH98rTqME8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754730571; c=relaxed/simple; bh=gj5WdryTYu7PT4dTZngjyxnWpSzUxEs+xqEH1hXzTQc=; h=From:Date:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=TSWSc6soxtnqYRDSKYxusa2i+As2brEdpt/EVAmhd2/gfee0YeNz1G958pa9JWPdsq8Q7TVxDP4gSOVzEtGDND9Gzrhs4gN/AsNUg+oA6A7uIYWB7nhQa1p6W+ST9gLepMDjzLEaJupHjI40/9khCInfqqnO6LkHmvbUt2ovTKc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=PkK+dHIe; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="PkK+dHIe" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 5793VFTo002766 for ; Sat, 9 Aug 2025 09:09:29 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= i1p4sIou1OtXlVv6o2JJTzg44/zZ5upOzf0/7xYa3us=; b=PkK+dHIeYigCel8M i/26lYcOcLcNcmR7YKbLytinfo1eiki44XBl57oQIYOCcN665fhtPBfXhXqW5GaI KyeHFUXCp+/c7EmIEd3vx8i5oNVk13qroSB4tT1OulGxe2MHTTpLwS48RTmptrsB oj/pm6wn2oh88s3ej7kvbh0X3bM/tBFMJ5LVdsKYI4ikY/EudQqAjXh3h1ZEmpNj JiKMbzz2Bo9v7Nq/SJxPyQraRuZdeQTxXO7bIIoVKBAv9YOOrzmdzB+YGLNihZNh 6yrcK9XQIXJdqgLFgLDuryEBwWF71gdZQ9t+dcGxVvo4vTe60O8CnnKXREEPZ6Zc T1JJHw== Received: from mail-qt1-f197.google.com (mail-qt1-f197.google.com [209.85.160.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 48dw9sgg78-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Sat, 09 Aug 2025 09:09:28 +0000 (GMT) Received: by mail-qt1-f197.google.com with SMTP id d75a77b69052e-4b08b271095so77359351cf.0 for ; Sat, 09 Aug 2025 02:09:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754730567; x=1755335367; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:date:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=i1p4sIou1OtXlVv6o2JJTzg44/zZ5upOzf0/7xYa3us=; b=bMWIqokWtIixWr8PoHRC2QyvYvc6ojiCReikP3P9KxXIexm0FVGU8SCfB0dC5qbPG2 +Yc32ROTOzlxsSbvNeQhl+UrXxSJab5rVxFI+55/z5uibPesnFym73p+cSkX8f1+oIn+ ii/EG0SN5g35yq/51xYuDu8JVFd9xaB0fDMSIHav2QE4ZkQdBoY/asBslcbl8/Nodmii ZARpwAWeFSbrjrs2C4o+kTU0dZ1Uy/S2SoCMiSzWNwecgSuNd5q+eQ+RZcVNVq3XKX3Y Aaoq903FvW9ifQsUGSWnfj2YPBtuZDxitCBZoN9tvGMme17Ua8/ChXTBeX8VOVjghW8t 5U5A== X-Forwarded-Encrypted: i=1; AJvYcCW6Twy7n+bGfiA8p/DcAI0VhRFtGtENhfuwRPMRTjssDNCMizRBI4LjwJdTVYAvBiSJG10GR2DjVksA@vger.kernel.org X-Gm-Message-State: AOJu0YxHg9ClwjKj+h5eHVUjWuENTEtXHvi3I0njJUAQpqFLK243cDel jSyhp+EGYt2dkB+lEjFvKhBTB/lN7k8aJJWYmOMhIHTUGZpxI9LjfxZkQHRCMLi8sthmV8vN1FI +jaGRBszTG6IVMBcC/8UF1txHnoMFAzgd1FF/hAtSFFVDZCH6E76N5oyZBKI9JlOy X-Gm-Gg: ASbGnct6lcbSDaSnLsoDemuRR5ebbKTjbztQ82ScHeY5kHdaEcfecBG1mXcBVjqbi3O so/iFzHcRisxT2bnG+f6jnDlfyhUIkJV5N6OzHzjAVOVnpdZ/lMNaDzrhxMth+ChLzB5eGcFa3d c6k3XPLZEahkkO367Gl5+HLCOenxPZefFD31tPYQo85w9OPq4x6vchJuJ44cNa7N07wFj1vcLzq qEMf/AclwatIzKMevi6zis9DcF9FEinmVFJB8d/eu1/d0NXoVhcLqnjGpWfr0RpVpn7ACxBdFtJ CZdn+I6w820uWuyIPhZtb2MnkysmV5UWAePfPJuuBP0W4QI2CsWVgA94kZVgc49ZLRvyCw== X-Received: by 2002:ac8:59cc:0:b0:4ab:65c3:37d0 with SMTP id d75a77b69052e-4b0aedd7d06mr83220611cf.31.1754730567399; Sat, 09 Aug 2025 02:09:27 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEtfrK4MBV+QXIawmd4r+w5lF0c2fMvBfjSp7sAbrpzm1gjiPZN0ejajPq8vKUzIPcSwLTQWQ== X-Received: by 2002:ac8:59cc:0:b0:4ab:65c3:37d0 with SMTP id d75a77b69052e-4b0aedd7d06mr83220271cf.31.1754730566864; Sat, 09 Aug 2025 02:09:26 -0700 (PDT) Received: from trex (205.red-83-60-94.dynamicip.rima-tde.net. [83.60.94.205]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b79c3b9386sm33241324f8f.18.2025.08.09.02.09.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 Aug 2025 02:09:26 -0700 (PDT) From: Jorge Ramirez X-Google-Original-From: Jorge Ramirez Date: Sat, 9 Aug 2025 11:09:24 +0200 To: Dmitry Baryshkov Cc: Vikash Garodia , Jorge Ramirez , Konrad Dybcio , bryan.odonoghue@linaro.org, quic_dikshita@quicinc.com, konradybcio@kernel.org, krzk+dt@kernel.org, mchehab@kernel.org, conor+dt@kernel.org, andersson@kernel.org, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v8 5/7] media: venus: core: Add qcm2290 DT compatible and resource data Message-ID: References: <0248afed-b82d-4555-8277-e84aacf153fd@oss.qualcomm.com> <447caa6d-13d2-2e75-5f33-6df9b2fd6d69@quicinc.com> <2yj3er5j72yoa2ltboopx5gvquur7jl3viqnq5qsci2fxjf4ix@7t63vgizfknb> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <2yj3er5j72yoa2ltboopx5gvquur7jl3viqnq5qsci2fxjf4ix@7t63vgizfknb> X-Authority-Analysis: v=2.4 cv=J+Wq7BnS c=1 sm=1 tr=0 ts=68971048 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=Rr2dNH5/fcnoRoBmcVUeRg==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=24S9wm6B5SMZhME8xikA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-ORIG-GUID: gbpTwvi-QTplYy0Vf3zuFm0uDhzDHk6d X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODA5MDAxNSBTYWx0ZWRfXyLlZqbWcxW+o GB5qhpaqR8DPCiPT8/7sHDziYFn8V2NUT8cctQiUM+XkAOLV9fFHsWDXDSpX/fCeMWiygH1DjAO 4JlhjtQlFqaf6L74sJlogfQRI+/KfAsKqQMLoECAcmp9+6r07DfkTUjka63jIJT9kcDVsKL5IOj YjFqef7S+jnkjwFqxzITevY1Qzx65l5pBMjjNAzlW3I7jIGo0ulfvJMth5oUsxSQ6UrME0DEUtS CTSGHwxa1kURto0erwcS4jWj6YQlemyuXq7H1MfH3gzBbE8IqwOnbWTqo9RbRLhXawtuWDJphPS 9W+V6b4VrynSLngdJJNqCN4n8pczhI/etsH6lbP9kmck4p1yV0RJaOelNQUDA3a0BFnetMhJCeO LvABJ/Jq X-Proofpoint-GUID: gbpTwvi-QTplYy0Vf3zuFm0uDhzDHk6d X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-09_03,2025-08-06_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 malwarescore=0 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 spamscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508090015 On 09/08/25 11:18:21, Dmitry Baryshkov wrote: > On Thu, Aug 07, 2025 at 10:05:10PM +0530, Vikash Garodia wrote: > > > > > > On 8/7/2025 7:22 PM, Jorge Ramirez wrote: > > > On 07/08/25 16:36:41, Vikash Garodia wrote: > > >> > > >>> It was agreed that this complexity was not necessary and that we should > > >>> just drop <6.0.55 firmware support (which would in any case only include > > >>> video decode). > > >>> > > >>> And so on v8, I removed the above. > > >>> > > >>> Now I have v9 ready to post it, but Dmitry is asking why cant we have > > >>> the v7 functionality so I am waiting for direction. > > >> > > >> the issue is in firmware for both encoder and decoder. Didn't like the idea of > > >> driver carrying the hack for a firmware issue. Just because, for encoder, we are > > >> unable to hack it in driver, we are ok to have it enabled in a newer version of > > >> the firmware, we can follow the same for decoders as well. > > > > > > if that is the only reason please do explain what do you mean by hack. > > > > I meant that the EOS handling was not needed in driver after fixing it in > > firmware, isn't it ? Was trying to avoid carrying this in driver. > > > > I tend to agree with the comment made by Dmitry in another thread to have decode > > enabled with existing firmware, no option but to support the *already* published > > bins. > > > > Having said that, these limitation of having a separate EOS dummy buffer is well > > sorted out in gen2 HFI which have an explicit DRAIN cmd for it. Hope this > > motivates you to migrate to iris soon for AR50LITE variants :) > > Migrating to Iris won't bring gen2 HFI. Think about users which have > OEM-fused hardware. For them it's not possible to switch firmware from > gen1 to gen2. Thus, if the SoC has been released using gen1 HFI, we > should think twice before upgrading it to gen2. > As I understand it now after the thread, any driver developer working on new features should not be constrained by users with OEM-fused hardware. Since only the OEM can provide signed firmware updates, it is their responsibility—not ours—to figure out how to deliver those updates if they want their users to benefit from new features (or new fixes). The EU Cyber Resilience Act supports this view by placing the update obligation on manufacturers (at least that is what I understand it, let me know if you understand it differently) Breaking backward compatibility is something we must avoid of course. However, guaranteeing compatibility between old firmwares (whether signed or not) and _new_ features is a separate matter...