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 70984314B95 for ; Mon, 4 May 2026 08:04:44 +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=1777881885; cv=none; b=ZrHmK+26HuIxpwWateL5jX9rBQFadUKK/fN5eFl4Ww9Z3c/dobWz0ccQ2Ujh/ZhXqOfuWz61M1l6OMA+FOAvKkpnrL5VCsAUMMMmxD4KGCvEMnfnkgdplajJ23W15A9Frq7eRSdZ9Yzp6iTiPyPDSagElkzOigT0FuM+QwaAybg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777881885; c=relaxed/simple; bh=0VBCOzp9/xdIM0amtibq05EWqR4To8uxZSZ/8rjaIEE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=oLjdfH4l7TrMhhWwBFETGRW8+pDVC2LGzwz7F53Bv0LmoJy6Xb1BY9+ERZ894ml06TFVcF2E6cC7y8fd9AGoQYKtlrUelAqQoEkviQPDXX5buytRiiigT/fTPqlcKe/Q4bOL7uli73AVBhtyfJs4idSWYcndX+U+IcZh8IjkNVw= 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=MQbqz4u5; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=eN3as5Td; 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="MQbqz4u5"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="eN3as5Td" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6446D6sa483416 for ; Mon, 4 May 2026 08:04:43 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= XIH5wly7/WGzQged6m/KZH1f0fhTWLSyg8Vj0M9ZT4Q=; b=MQbqz4u5JxY+aVXl Pt/vh9VLpd+zvAjHMPN1P+S2xYjgriKScigRCNyf0+sQugwS9VyTLpBMVISi8iAu mSGqlAzTPixlWrJRdapssCtG0jgS8s9dYsps03TOv+j1FKaJTH+DIngIsTfRI1oo AyN/MQaurl2qqPAMs7g80Ivm4wy0OnaSFliHCqq4t2CMcC/jIxMYmtlM3NcVZ7Cf G3bR7PzNpLdGJWl7fZycgQ4BcRDCGoRKxyNT4SHOwhanTJL9B3f9yQlshgOdU04z h5eVWvcrcQ4uKslF2AGwbprfxr/RpzAXElyFsqgyo8rHToX9+DNP9IpajcrsICr8 QeBf5g== 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 4dw87sd0cx-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 04 May 2026 08:04:43 +0000 (GMT) Received: by mail-qt1-f197.google.com with SMTP id d75a77b69052e-50e5c781193so8080281cf.0 for ; Mon, 04 May 2026 01:04:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1777881883; x=1778486683; darn=vger.kernel.org; h=content-transfer-encoding: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; bh=XIH5wly7/WGzQged6m/KZH1f0fhTWLSyg8Vj0M9ZT4Q=; b=eN3as5TdrvlmQOWgYbt5klvjqwzMJqT+SI9WgGm6dKoWLoGwcwjCkyoGPFjRaf/prl hstYak3wzXGzklAmVcvVhyoFq3ujntyb8ftMjpd8E0RQoaQzk2qYIeJvouXHsjPrfhPg 5zgHmXeLJzlpzd+iP4ezfEVfUgssLvVnNBq8okVNpEW2alBimEms/TVT05VJ+AHFwLwG 3fbY+hEuyTQhA3ghBdDTlONtGvtdk9PNf3ElivW3c+W+eWi4JMRhcewPUvSY2RJ7U3HI cp94mVNfPTnPlrXWyqtraVZwTpDR15Wa3zQizv23af3I5XhevIDGdYaLfRSYM73bH/Pj wkiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777881883; x=1778486683; h=content-transfer-encoding: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; bh=XIH5wly7/WGzQged6m/KZH1f0fhTWLSyg8Vj0M9ZT4Q=; b=S5PFXKbcmSz0gaNL/2VepnRSebjZf/TioCbj15HRiqcGbFekM2UbDYt1KuK44nzFHU Q55oQAnAjUs7dAoVhdH/Vo9i3gU0vrdSWq/wcKqskp3ou/VmlTZ8HlSuQ9cklEp2WWVI Luv1+sycJA5lc02ioTJUS7IEeU+USkzM6caJZH6HssbN4/j/LlIa766gdYP2VBVpHYyB LHlFyO2dKgLu+wlrTqLLhAvkPTynfB7sgx4h+uQyRuoX3gPdx5sMsDq+knwIAFBLcLe7 WCmunGNq9oRptiwZjvUlNcUITtZy7U5wkuRvgy1b1Nfc3SDN/0XPtzj9+Bfi5J2HKIAr baTg== X-Gm-Message-State: AOJu0Ywz8Ryhze3TZ4lD9oe/xodhWM8s9nMqhRrGbtkpx+9Peq2pYJ5A t1/fcAH2DUIvUsdak3RfcTZJbAjrkO62mfb0YUJG1zv6zCLtoJZ73ljw/Vn7lS+EjFTr/Q1HZev C5H8IBi33Oxcq3R/SKaiUm6+QqEQBZi9IXFZi/hrDo4demwHeL1BRIQYG6hILrQcyDVZy X-Gm-Gg: AeBDiese++uA+8xu8EunlqJhJeK3b2nTIJCrdf3ORpF9FQoouaOt44EtrbdpPVdr6wZ q0kTUfFDJnWOjRr/TznGBpxpkdrobV7j6K+oJCIfquxLMCQaBL/QCIyB9vVL1JwxJyUiHFEgdpp KVjKjNTIKsNKRi1QuGxIpdix2Sl+4hB+4TL71IRoABMZ5mUCmgLvQVxXt1k3BuM0/jGdRNA/9MP VeN44Cqs9CLFkLD938F6zEDXG0nvdu83I6rOaHrOLCNEhnxf3mK52TSsUZHOEAf4Mkj+LbDd1jI Fsq072RIuz7L/vdP57Y7UKGe0vtHE6Prl2ftsxV2F/N2Wyrv6y6jI2H2bHIgnVCozDYu3Dn3H6e 6gYTN4M++WRUgYK15eKtUoPP7xGYAg2SBAvAm5N/yBBXMtd9mfQ6nyyWRlFPGws0wFT9BM4JCG3 RAWSRLE8bASiRLOA== X-Received: by 2002:a05:620a:4724:b0:8ee:a1d:bac6 with SMTP id af79cd13be357-8fd1776c534mr903146985a.4.1777881882812; Mon, 04 May 2026 01:04:42 -0700 (PDT) X-Received: by 2002:a05:620a:4724:b0:8ee:a1d:bac6 with SMTP id af79cd13be357-8fd1776c534mr903144285a.4.1777881882226; Mon, 04 May 2026 01:04:42 -0700 (PDT) Received: from [192.168.119.254] (078088045245.garwolin.vectranet.pl. [78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-67b88a4d99esm3109690a12.31.2026.05.04.01.04.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 04 May 2026 01:04:41 -0700 (PDT) Message-ID: Date: Mon, 4 May 2026 10:04:38 +0200 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: qcom: sc8280xp-blackrock: switch to uefi rtc offset To: jens.glathe@oldschoolsolutions.biz, Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold References: <20260501-blackrock-rtc-v1-1-bddf3e37fa94@oldschoolsolutions.biz> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260501-blackrock-rtc-v1-1-bddf3e37fa94@oldschoolsolutions.biz> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: -CzSmqnTkgBvxQ3Ha68ffAfd0ROGA888 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTA0MDA4NiBTYWx0ZWRfX+c4WCDtiZtXa S2DsAFD/bwHYHn9SkXIMz+0b6PnGpUIjF0W8mdgpCL9p/D05QRb7x/lH4CQeNaDgpS2p2ifKKEx 1fwP3yawNqZXvukFztGcqKP6xTKyv2JOOZLzKhP46Rf4y0WagSZIkHzO4kv8tjdoTZTRVy0Znmr wryN8iKJK6YjPAtiTSMLOYZ6CtU5Df36M9Uf0hB7zct7Le7m4yiT/Qk07CEcCL/krcwZ6ugEr62 0/qBwoszuJBzJ6VmtAH9gqcFRJ0gfyAaHKAbJhSk1OnSrNt7ZEo4rzUba/qYhXQvWoQUswRRygi OmYDFlAZMTdxaKddff9pUebVsRLfIQvQCjmTJcKH5eiNp1BFux3IujpDkOw2iJdYJcLoqkHJmbU UwHzGnoYAEdU9Oc0ZqGzFihEW+bqsQ== X-Authority-Analysis: v=2.4 cv=O4IJeh9W c=1 sm=1 tr=0 ts=69f8531b cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=VwQbUJbxAAAA:8 a=gxl3bz0cAAAA:8 a=EUspDBNiAAAA:8 a=VL2iTB8cqDA4uMkxVQgA:9 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 a=kiRiLd-pWN9FGgpmzFdl:22 X-Proofpoint-GUID: -CzSmqnTkgBvxQ3Ha68ffAfd0ROGA888 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-04_03,2026-04-30_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 suspectscore=0 malwarescore=0 spamscore=0 phishscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2605040086 On 5/1/26 11:11 AM, Jens Glathe via B4 Relay wrote: > From: Jens Glathe > > On many Qualcomm platforms the PMIC RTC control and time registers are > read-only so that the RTC time can not be updated. Instead an offset > needs be stored in some machine-specific non-volatile memory, which a > driver can take into account. > > On platforms where the offset is stored in a Qualcomm specific UEFI > variable the variables are also accessed in a non-standard way, which > means that the OS cannot assume that the variable service is available > by the time the RTC driver probes. > > Use the new 'qcom,uefi-rtc-info' property to indicate that the offset is > stored in a UEFI variable so that the OS can determine whether to wait > for it to become available. > > [1]: https://lore.kernel.org/r/20250423075143.11157-4-johan+linaro@kernel.org > > Fixes: 16a7fed11714 ("arm64: dts: qcom: sc8280xp-blackrock: dt definition for WDK2023") > > Signed-off-by: Jens Glathe > --- Reviewed-by: Konrad Dybcio Konrad