From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3AE8227C175; Fri, 6 Jun 2025 07:54:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749196454; cv=none; b=BbYcJ6Ql+KuWr2bL97CUsbNlXCofdJ0mHx6aO3E6XxnP96Moc3+WtU56ZHuwYGj0BPrWd+WWmsmfCdOfYaLZLTgfmXBmjmtzTNHT21aVcIHNGmPdQxpXMdcdmwDBFsEsDol0hTAx1RYCatACsItVEZVLGtpxGNo6Ol1aOVkCkVg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749196454; c=relaxed/simple; bh=Ot1GoKEsPURTx8KEyXfRJcTrIqTF7zhmz5fx8X3fo5M=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=BsYKfXcbGBjvRXTnkqGZ2yo15PBUiViHJnpbpyxQh6MeNW4HR0Tpt/frpP+BI0b+1SPE0GtOvMmt8HEUoodTpVU/FvddeX0KYoWQGx/3IG9E0Dg+rloZqg2s5kdFqMeXd9dg5I3a262H2atvfucArZEQEM7IQcVxMy0LaU3vJ9Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lFtfP0nN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lFtfP0nN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00195C4CEEF; Fri, 6 Jun 2025 07:54:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1749196453; bh=Ot1GoKEsPURTx8KEyXfRJcTrIqTF7zhmz5fx8X3fo5M=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=lFtfP0nNLRq6TtGUqOJczOnOq26RhLTRlkCcqsoWji/piTFUSdQCzS544jVKUowCX CDqhb4p4ezCBOJhkzyuSmOydD3/p9t+FM1Xm17BOgbqIX8Za/0Ty/nCjZ0/qqYDR3f /s95lfpNe3cPY28rIQPKc1wFD/LJYBNIXCTq4QqjkXBxviqiiJRFhCB90NQTbUpYi3 +zk7NkUPBNUf8NaUEWNMm65GRXYi+WAmQITFtdfIvz681WihpmV2Q6Tkq+FWYD1p3H ZaQrXgM2CpJE9++9mQxFRpVvvUaAXPjnNO3qYZYoU3mmrW2Wm4m4gLqCbJf1kH0NA1 Hpwo2YOvn5bZw== Message-ID: <85533e92-43bb-40dd-a8d5-13d19e859616@kernel.org> Date: Fri, 6 Jun 2025 09:54:08 +0200 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 v8 0/3] media: venus: enable venus on qcs615 To: Renjiang Han , Bryan O'Donoghue , Dmitry Baryshkov Cc: Vikash Garodia , Dikshita Agarwal , Mauro Carvalho Chehab , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Nicolas Dufresne References: <20250530-add-venus-for-qcs615-v8-0-c0092ac616d0@quicinc.com> <285cae4a-219c-4514-818f-34c8225529de@quicinc.com> <44b3779b-702c-4e8b-8ccd-c9c3314a511f@linaro.org> <3956eeef-2a60-4bfb-908e-5e3e32970b86@quicinc.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 06/06/2025 09:51, Renjiang Han wrote: >>> >>> Reading this thread, I don't think that is the case. >>> >>> I don't see how patches 2/3 or 3/3 depend on 1/3. >>> >>> The frequency table is a fallback in the driver and the DT changes >>> are completely straight forward. >>> >>> TBH, I think we are hitting an email comms/social barrier here, not a >>> technical one. >>> >>> @Renjiang can you please confirm that freq_table is a fallback, >>> qcs615 will work without OPP table and the DTS stuff doesn't depend >>> on the driver. >> yes, freq_table is a fallback. driver will use freq_table without OPP >> table. the DTS doesn't depend on the driver. > To correct my previous response: > For this project, the driver patch needs to be merged first. Since it > falls back to SC7180, but their frequencies are different which is > reflected in the OPP table defined in the DTS. > > The DTS patch is intended to enable video function on the QCS615 platform. > > The driver patch is to switch from using the driver freq_table to the > OPP table from the DTS. Without it, the driver will continue to use the > internal freq_table as before. > > Therefore, if the DTS patch is applied without the driver patch, the video > function will be enabled on the QCS615 platform, but the driver will use > the SC7180 frequency table, which can lead to an overclocking issue. This means devices are not really compatible and DTS is not correct. Best regards, Krzysztof