From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f42.google.com (mail-ed1-f42.google.com [209.85.208.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2FED541D4C1 for ; Mon, 6 Jul 2026 12:27:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783340833; cv=none; b=Qgb5yLg3LTCt7TOU6xHcq8cFzS5+orHiISqeMiGNXb9CzeUZ5TjLDxE9R0P/nMyQnWi+FiCu1ZeULLVwZ7jG3mZudzyR7wFhdIK1P9KTtZeJeivtBP+4SBKXYv3XYnocplnf3ifnp9tbDEax+xYolqLO7RIPFRyVvNw7v679ba0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783340833; c=relaxed/simple; bh=i3On1m+1xOP7BaqxdPfl0e+BIrUqtmSgKy1W2+LpuX8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=sYmPqhQBraEMo+5t8KXwuuQ8Lp6zEdr3w4Vyy97xexvkqBmNS82FU4Z2mrjrU9G8pK1DBD8ztTpC9K5BbQLRHgVDyi0nYvYB2ol5QCXey4HCb1J0RJbPWn3iINIlrW8I8zHshgODwBIq2g/k6PhzdMm+fDjsErf/baJb/tqH8Lk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=JmQ/2JrD; arc=none smtp.client-ip=209.85.208.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="JmQ/2JrD" Received: by mail-ed1-f42.google.com with SMTP id 4fb4d7f45d1cf-69532288224so5338511a12.0 for ; Mon, 06 Jul 2026 05:27:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1783340827; x=1783945627; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:content-language:from :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=oqZgOHmUP2WhlukFUJpUWMWTr9sro7DNP6QMMUzHrZc=; b=JmQ/2JrD+d2kvtqkaU22bC2mWFrRlJ4H2FnVSktcJN0erOtu29cej990y36xBDfl6g /5dlt3o4eb7siCqhl5dNTGgoUcrgr4O2VB43aUlpVik2gYDjiaotg7bh/M2n65kKV2Bz ugswnz83dkP2pLwsQsUK75XSMU8njWzBpUwYjTaGzDJ3vGtc7taG0QNSy9OI1QvxhPRT NYnNI5nu4eXrFC5s0qwVoy2eNsXrJWjeQ2FQE1vqg5nZIVJJ2x6KyaM8HoZSBiJAwrv1 8t3bPIsKcPyMAcKEe9I1R4SDYOleMzEYa6J/P+3ouANVbyKF1rm6x85ihf0gl63zpi18 mgkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783340827; x=1783945627; h=content-transfer-encoding:in-reply-to:content-language:from :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=oqZgOHmUP2WhlukFUJpUWMWTr9sro7DNP6QMMUzHrZc=; b=qqcDSfuw5jd0Vf6nhq+KQTMqCsZjvCCnb1H+Vg5huvY39XKbxFZtvPuACKW820sgdA Q5qkhfuTT7G7R35HNt+rgIlFijWhjGPQT9pj+TeGckWr4gp5Gyjq/RBj5PJtkngopT6t r0yzShPUYBFDFpLzufiwJXfbO0LG1XX+q0JsoSiKWpPEwRlgen8X55aSUgFygU8qbxc3 jnDiQpw1Mxtl4YqekVd7ZjsSJy3P3srPCO7Z80nRG2srMZt5xinYRAssgpAvR2f5itMN BPPizuOHO4qiC5/ym3yRY5c4EVamg4lhlE9OzInclaFOlbs2XFRqWmgpIpOGX2AdkBSs MVRw== X-Forwarded-Encrypted: i=1; AHgh+Rqpw5var5BLfpzkWt9PuDNKF6p/NCH27K2schPcvAMkkxODWWJSFsSxnl8g3A/ecgnnhBlh4nI3lG7zPBU=@vger.kernel.org X-Gm-Message-State: AOJu0YwkJKnnyDjv6+NmPZQnrhpFTPWLD3KXPSdJLJm/eskN128zopoe sEvPEcci2MIu0qaxExnuKeOwaRhoQWEknE6eHS7MIcfFBnAj8orehheO0nl5n9hzYvY= X-Gm-Gg: AfdE7cluQj33GUx0z9RrAxeixSe+Zeu5Q330NRN1saFDxw5rcxNSbJQvTtqsZudpRjS rii9rbXt8Z35pbTY0KuzVFHdC64swQ1q5lzbCPflrDiLnN22T1JNa9AvbU3SvP8T2f2bvqObMRJ qdJJ49LueXijq2ZRhWzpakFXUjTKlEDEvYievxChTA43rjBog3tae6y85FySnVVCOkfQiwHi7oP 7xstw5JsUM36T+LmQTaSIH/3ovrGf962dXMY+aQ+Uon44zkxUhZ2HadoMvnumDh0tUuw0IaeyI6 8w6H0AemEWjefRVeskB7NdEBi5dsVaTU6KDc4pK37zMgURfM/0qLQEYsAKTOKTTLAdpnXa8LOet UMtwQ69UmA9Y5ebfOJJfULa6G/C1lLa/5tTYGg9Tp2xKukRE4E9sRrvVr4GnVH9EBSvfb60Q85Y Su9sgU7kBcB5woeq/2M6yk0f/K2A== X-Received: by 2002:a05:6402:2115:b0:697:8d48:7fa7 with SMTP id 4fb4d7f45d1cf-69a85ba021bmr238124a12.22.1783340827234; Mon, 06 Jul 2026 05:27:07 -0700 (PDT) Received: from [192.168.0.101] ([109.77.44.220]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-69a19ce4a60sm3946787a12.8.2026.07.06.05.27.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 Jul 2026 05:27:06 -0700 (PDT) Message-ID: <8871f6d6-6102-49bd-9758-faebbd9fa19c@linaro.org> Date: Mon, 6 Jul 2026 13:27:05 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 1/5] media: qcom: camss: Populate CAMSS child devices via DT To: Krzysztof Kozlowski , Atanas Filipov , linux-media@vger.kernel.org Cc: vladimir.zapolskiy@linaro.org, loic.poulain@oss.qualcomm.com, mchehab@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andersson@kernel.org, konradybcio@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20260706071113.383215-1-atanas.filipov@oss.qualcomm.com> <20260706071113.383215-2-atanas.filipov@oss.qualcomm.com> <389ff33a-b319-4f2e-9410-8ae962f2e844@kernel.org> From: Bryan O'Donoghue Content-Language: en-US In-Reply-To: <389ff33a-b319-4f2e-9410-8ae962f2e844@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 06/07/2026 13:09, Krzysztof Kozlowski wrote: > On 06/07/2026 09:11, Atanas Filipov wrote: >> From: Bryan O'Donoghue >> >> Use devm_of_platform_populate() so that child nodes declared under the >> CAMSS device tree node (e.g. OPE) are automatically instantiated as >> platform devices. This is required now that CAMSS is modelled as a >> simple-bus and ISP blocks such as OPE are described as child nodes. > > I do not understand this rationale. How is this required now? Are > existing DTS broken and do not work? Then this needs to be explained. Required is wrong, true. Existing DT is not broken no. Should read something like: "Use devm_of_platform_populate() so that child nodes declared under the CAMSS device tree node (e.g. OPE) are automatically instantiated as platform devices." Why this patch ? We also discussed simple-mfd but then settled on this way instead. https://lore.kernel.org/all/0f898ad3-156d-496c-b2c1-88646edc7ab6@kernel.org/ > Best regards, > Krzysztof Not withstanding this series, I'll fixup my version of this patch ;) --- bod