From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 79012373BFE for ; Tue, 25 Aug 2026 09:41:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787650868; cv=none; b=Pm0LsZMEt5RwRiCJtqc8vWzzA22SvVfrYZ1Axc8zwwydjDWdtoGPH6f9sfOMco4s3SGXlD+B6lAkrjDc1YthawRdm7BSY7OFO2t3IXcfZb3hYYA3/S4G3PVrnc+bRdqVIpdIzRMurAGD4mFtOJ212oPtWt2Lov9vKr2B2fnejOc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787650868; c=relaxed/simple; bh=tzFtmovB9wZ0wo1v/yiTjf/mh3kSjnpT14RoxiOUwug=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=uu+h14IsNnasv8lWjYS89g2bduG9cQVKV5k8TWetbRhfPLetbQBNjOfhJCivMSUWdj4nP5eWAbKEk0pxk/TUmvHUHr4Ve/OoROdK+h8K3aez0BO5h53H0RpMV3mYcqCN05sdGTXKSPXUcFKpfvQmdmOAYAdV7xHea68A9Cs7O58= 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=eQ/TNvzY; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=CCHnQ5w4; arc=none smtp.client-ip=205.220.180.131 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="eQ/TNvzY"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="CCHnQ5w4" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 67P88WNA1163538 for ; Tue, 25 Aug 2026 09:41:06 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= FM18vI/7nJzcaX86l6gcNIug8109iQgG8p2xm3oFCzI=; b=eQ/TNvzYSgB3EPYS 2kpVd6ZgmSp2nMu4NLIpB3a6zTbHMoiYhj+FfWUutllUHi/NDYn+zDnxfkpdCUuU duUr9qPI0C83P+smTqH5B9AH5TROcQUTFDs/CQ1JhlebpVaCttoK3oXMr5hQNtP7 ayY1ZzzKo9RZl+eXfi/KQCK0WbqiTR25V1LWSeCInshTKDc2YZJGa3WVJ0akvz4a YWB6E3OreVO0yZQ3yST2eroBY5Vhta1JiXoaSfBB6HOmFMkRLQ9SDAIXmeZPq3jN /DaxIBHtSGNRq7VM7y6vGUJWVU35NvCwmmdq3ut8J1bC6hlniLIwUYu/e9K9sMBK qc1zgQ== Received: from mail-vs1-f69.google.com (mail-vs1-f69.google.com [209.85.217.69]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4g8y5jj285-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Tue, 25 Aug 2026 09:41:06 +0000 (GMT) Received: by mail-vs1-f69.google.com with SMTP id ada2fe7eead31-744c091ec4fso89400137.0 for ; Tue, 25 Aug 2026 02:41:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1787650865; x=1788255665; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=FM18vI/7nJzcaX86l6gcNIug8109iQgG8p2xm3oFCzI=; b=CCHnQ5w4MbDuMIwBpYyjbvy1U0lrnIUbL7SIds3lp5mmPu5fuMU4pUd1nkfBTvUR4O 4XOIZ1zCmXSkap9ET1kMyn/kL4gIM/yhPPL3BFSr64SUJxBIo3jvmTQzACl/LgmFwy5B LpuXMv/t+8kAW1E2/FQjJGRq6HwJ5jNWS88Th5BEUHU2YmpnM9haisVuaPEKfgA6FgFL MzhK4uFJCi1EHyK4IL2DiOIEOHf92XkkL/YLwAA64C/BxfAfyQyJ+iuUju4+2WzaoN40 hXZ5M8Ni5+obxVIGn0FeoiIvyKW0oCO/eTcMXopLCwiucZzzmJGNHItoJYsLy4Y9tfyQ ppow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787650865; x=1788255665; h=content-transfer-encoding:content-type:in-reply-to:from :content-language: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:content-type; bh=FM18vI/7nJzcaX86l6gcNIug8109iQgG8p2xm3oFCzI=; b=O9MWqLouS7nG7KhlR6YVEZfzlpzJ07fw6dtcuPAyRpoYLyNFUgG0sE4PtZ9SrK3m69 kSaXAe4S8Tin8K+vy1QI9K29o9wRPCyA6gEyf5DWncEndFsqJ/dEuCtdF2bpRSIjuJ1J 5rowqDIgdWvMvtVE7f8+iTUrgsGX9XCrjt1MCqWAqhG1bFmm/r7J+NVjPqL7Za4oB5Sa vQVJ8rsSxlLSg806KRrpV1HF9WwpNh49qwLPZFb8/vdNg5Ke9/IGEZcvR7PhfvnAF9io lA0lRRspSCBGMXcGAvb3a4dnBiJjhb3say7aCj0SkpLWrjFa7C4dPOf3+rLJs8HqX05g +Tow== X-Forwarded-Encrypted: i=1; AHgh+Rp16/xrO725ICj8PcbeG19QcnEeQfRjR8P6oRmoiesMAqktchKNOvR+qtDKqBDYmEnvRNRw1+y9sTA=@vger.kernel.org X-Gm-Message-State: AFuF++naItMV071i7Re/c5z+jPhk4aD4+1YrerxU9aV8YXPCLZTXZtHG F0HR07VDr6AuTbVNMBemfxndYlvJHhPuyO25aWuE5OFx0XE04wmK5+T0WFHPWsSgI79sPfbz7ld 6M2GgIL6+Zu3QRYPbzaOjZ9TjyUgdAAAzS7VxqTRFvvWaVllTPg2b+2DIFEC8G/Q= X-Gm-Gg: AR+sD105Us9QOC8IKtacmHxndWlaVfi6VXAxmeO1hCEc/mYMoCJtgi/beLqr/dX05kF jXbz0W81DKU6Kgr7dyrxa8vu7np1BgiUMNxHTOreh+bB5f/RbJ29XdosCD4EZ8/mWbngRmdFdoS 5wBIr98s8GB0E1izhdh2u28sqq7CZjoBdpNNyv87v7383iS0qrCJHFpJfjImo7GgUkNGRUQdCy5 3zW+0c+umamsSaVCFqK0lbXtpuzi/GYwrFBD9cDPwuhaKt2mjeWPcCyg1CJpMpI4a8I1Pmo2zbF mS6J3nfBSG3Ybrg12h94OZuZuc3/IG1fAUgoW2ZM9592b8lH/+DUxymeHwn+IBn8sARbxScCoqE 01Tc8y49N2JSNk7kgZVQXaFp4 X-Received: by 2002:a05:6102:34f4:b0:77b:fd61:ab6a with SMTP id ada2fe7eead31-77bfd61c1e4mr2511513137.1.1787650865544; Tue, 25 Aug 2026 02:41:05 -0700 (PDT) X-Received: by 2002:a05:6102:34f4:b0:77b:fd61:ab6a with SMTP id ada2fe7eead31-77bfd61c1e4mr2511505137.1.1787650865058; Tue, 25 Aug 2026 02:41:05 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6a59e1d741asm12971578a12.27.2026.08.25.02.41.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 25 Aug 2026 02:41:04 -0700 (PDT) Message-ID: <9c8e4e57-135b-4f24-97b5-dde9c0418efd@oss.qualcomm.com> Date: Tue, 25 Aug 2026 11:41:02 +0200 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 2/2] i2c: qcom-target: Add driver for Qualcomm I2C target controller To: Viken Dadhaniya , Mukesh Kumar Savaliya , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260813-i2c-qcom-slave-v3-0-1d3742e2ad47@oss.qualcomm.com> <20260813-i2c-qcom-slave-v3-2-1d3742e2ad47@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260813-i2c-qcom-slave-v3-2-1d3742e2ad47@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=O5QJeh9W c=1 sm=1 tr=0 ts=6a8d6332 cx=c_pps a=5HAIKLe1ejAbszaTRHs9Ug==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=qjjNvQ9hGNcemuQZb4oA:9 a=QEXdDO2ut3YA:10 a=gYDTvv6II1OnSo0itH1n:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI1MDA4MSBTYWx0ZWRfX3hE/FLRyYcEf ANf4naiRnwMNEYKrb7i9HLDQ0oPbw9n5dIZRL6vIXXRZWgLkYHRxAU/iuZatyqaNks73WtZdeVL AhwM82brnmFblXBUd8gClfucG8Mq+R6lQqF0vQzQ+eDHhke0+Rjh9o4ipekZhvs7VhJebaAYs9P HHssHGMBHdX1Gy8qh8SBVPn7qHLYngQMoaUJIZHuLfWIHUjUA3zfmqvTwUMuy8D3mw8S+J7joI6 ge4F4zPQJntG5/e3RDfoi5xVdNu+5X9jtHVDruIBQPQoYQFfXhxqbSyaVqMulFSOYAISjx+zUFq FK14fsLbH0ihLhqQBl7WJxx/swMpy6/yLo4uAMbMzR2hcxwpR5Oqc68SiWqc+LSgU87kMlVdC9w U2lZWOzPEWfB40HkKpHuaZ+4TNIdCWFjExkAGAeCCPPJ7XIX0AQYIy/6GtDPvo8ZdeWd1bwZdjd mRvPayy33GsAQj3Nzdg== X-Proofpoint-Spam-Info: AW1haW4tMjYwODI1MDA4MSBTYWx0ZWRfX8jtcdw+uCi5q Ky/ORRBc5riaCujeSxu1e5HihgWpkFwSIQw23YLjHTpFGK0omtdQspbJvhUauvimfW1PCky9P8j VgeR1uHKGM4gupkuBpQxkR2+JBStqIw= X-Proofpoint-GUID: xaziPo3smctno1Jh19wJPJ9D1ctLSKzg X-Proofpoint-ORIG-GUID: xaziPo3smctno1Jh19wJPJ9D1ctLSKzg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-25_02,2026-08-24_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 spamscore=0 adultscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608250081 On 8/13/26 5:52 PM, Viken Dadhaniya wrote: > QDU1000 and related Qualcomm SoCs include a dedicated I2C target > controller that operates exclusively in target mode. The existing > Qualcomm I2C controller drivers (GENI, QUP) are master-only and cannot > serve systems where the SoC must respond as an I2C target on the bus. [...] > + ret = clk_prepare_enable(target->xo_clk); > + if (ret) > + return dev_err_probe(dev, ret, "failed to enable XO clock\n"); > + > + ret = clk_prepare_enable(target->ahb_clk); > + if (ret) { > + clk_disable_unprepare(target->xo_clk); > + return dev_err_probe(dev, ret, "failed to enable AHB clock\n"); > + } Does this need an OPP table? Presumably we need a power vote for each bus frequency Konrad