From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 F11D92DC32C; Fri, 31 Jul 2026 13:39:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785505201; cv=none; b=ON05Zc44+fXt+BoL//vjR+BcQdv+pNSZlsJy+ZTTqPHgKpzGh/QYi52t/GxJEoJMY6LEKlyWqUD9cE07Gfu2YsPcPN4Teb3AU66MlCStQvoACz4GF+cwVURBQZgXdSMz0Nn1ij/oUC84Eydsf0I/I1lwtwa0hqM+2J1LtUQ9We0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785505201; c=relaxed/simple; bh=kF5eobvMMIr1uQGSeGooDYUoyGsCtaEwZYm5hxXfR7s=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=QPompDr4zdcrwFKdY72cStD25Mny245mUreaxw0k1X5xBKGV2leJBo47TbWk/LPcqZv/8Apuy+YCOs+8QsZa9rsRjlKpunqLbmWK1YH+e3dxTW7sc1SYcZJfSTyqLZNMfaBGZsoJWRNSaNZgKzsrkfu9btyRM+aRZfopLj4WMBk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=M2VkTPIg; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="M2VkTPIg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E23521F000E9; Fri, 31 Jul 2026 13:39:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785505199; bh=71GsCQtibyr0EC95XRW46BEuwQ9xc1aBpYh6h+8L0K4=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=M2VkTPIgDxUI/vUy9WfjSmZXfoCjVwscvX7fXo3ceVAe3ffW/C41n+gKmM1kTpVEL KfCRvhTEz7fJ/Y7Mnk1v6IRAupqpWJntqyxCKMdXaMfncCDCi7sIH2TRwFHgJTZHTh EinV2XWLYUQLCfZ1SPLeeYEbJw9P/UHYiLKqcmp8MA4f8ugy8FFlWA6X/rD8fyEKX2 wxG93Gq1Xr1S1TLIV0H9s/AlOsHLSAEh/j+8OuY38jxZ76rZrRaGqxeBh+H+szAyEi y0EsdnRcr5dFkeTpQxyqGVsfJFs+r5pUe9SrsxFr7qXEe7FDv4/ke21YT0TUw5YkzT 63BvEfqmK6pCA== Message-ID: <543f447c-bd6a-41ae-a413-fa2eb74be9a0@kernel.org> Date: Fri, 31 Jul 2026 14:39:54 +0100 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 1/3] dt-bindings: media: qcom,qcm2290-venus: document shikra Iris compatible To: Vikash Garodia , Dikshita Agarwal , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jorge Ramirez-Ortiz , Stanimir Varbanov , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Vishnu Reddy References: <20260721-shikra_vpu-v4-0-6dc5a8999b73@oss.qualcomm.com> <20260721-shikra_vpu-v4-1-6dc5a8999b73@oss.qualcomm.com> From: Bryan O'Donoghue Content-Language: en-GB Autocrypt: addr=bod@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 21/07/2026 18:32, Vikash Garodia wrote: > diff --git a/Documentation/devicetree/bindings/media/qcom,venus-common.yaml b/Documentation/devicetree/bindings/media/qcom,venus-common.yaml > index 59a3fde846d2196ab1e4588eb396012ba6860712..0be2f9119e78233928d23af86836ac294aa769ee 100644 > --- a/Documentation/devicetree/bindings/media/qcom,venus-common.yaml > +++ b/Documentation/devicetree/bindings/media/qcom,venus-common.yaml > @@ -37,7 +37,10 @@ properties: > maxItems: 20 > > memory-region: > - maxItems: 1 > + minItems: 1 > + items: > + - description: Firmware-loaded codec carveout > + - description: IOMMU IOVA reservation region So we discussed separately the pixel and non-pixel sub-nodes as well as this basically alternate means of memory delination. What I'd like is a clear statement - Committing to this scheme for existing platforms - Adding the pixel and sub-pixel to the shared - Backporting at least one method to -stable For that reason this extension should at a minimum be its own commit with a well articulated commit log. Since this is minItems: 1 it is conceviable to land both this and the sub-node into the same file. But my continued feedback and objection is not being clear about what's being done and having two separate methods without a clear roadmap. You have your sub-node RFC and this change - I won't say sneaking in here but, its a surreptitious change as given as-is. - Which method - Both ? Then what goes to -stable We also discussed offline the fact that right-now the lack of a means of addressing this in upstream means we are in effect leaving a known critical bug open to the vagaries of IOVA allocation @ runtime across every single venus and iris there is. So to me minItems: 1 for -stable _in_this_kernel_cycle_ is warranted. --- bod