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 4E7593750CC; Mon, 14 Sep 2026 04:39:22 +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=1789360764; cv=none; b=uIO/Za/oy8TvGtOAMLBeBovO7daTiyGjjJUW1gNzFR7WfgIMg1kgN/w1ytxUJQ5BHwOul6qtRBPAcnlZ75oHteNrf8Dc/sU8ERp62B5+Cvu9/llxuP8vX7ScGZ1T/FFzFqsztb4lhLRuHgsIEvbvNxtxtm0Qot9ZiRxn/amEvTk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789360764; c=relaxed/simple; bh=CcfGecDBtOLIQE2iImJJOfkKpM/+XnQ0SnOWaiW8HII=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=PAKg393XK97lm8J0hwIXhuLjILeSC76z5XTdJ9XAx8BNRe+IDhi77zFt0B6O9ioNkkpPxz890bXCrG7OvWEoAcHck9b29fGbsNPBXs/FNmVRoa0jwFuNtgiy7LGbKYL8gGTqZbwzUGrQzgjsZSYWFP3zYuXvsp5vz/kjnCBNfLU= 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=mgodD7HT; 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="mgodD7HT" 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 68E2eTxW3348570; Mon, 14 Sep 2026 04:38:53 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= L5BjR9yuX0w9A8iBbpgDFPH2EoKDQ8C+CtRTeqM63T8=; b=mgodD7HTMaqiFSGe NlgWWrCq0Jts1bXkaSLAicwMIDP5XCLJegmyD3gJEk4U43U1fQ5pK/fMJtrEFNZ2 u5+5HSt8Fpi2IZBIScOdpQ7MMXeAhwzjQ8YbUyONZQmmftpgUFNDZ8GrCeSbQX80 wLJQfycn6n1vRDjb1kOTMzkxfZY3P6OTuxv3BuZ2B0kk/q936MfQQwI97P5hZAgS dtUW7Iez2fdfYq5y/QVdGDCBM2QGyTiSWj8wq2tmEAP1MveuOeJlE6QgOWJbW1Rj 2ck2+Kn0xQko33VtEazOOam/Ob/W5M8F2llzYyaSpifQa7shP6omZRs/L+p34Qsb F1wHew== Received: from apblrppmta02.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4gmy9dd0qy-1 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Mon, 14 Sep 2026 04:38:52 +0000 (GMT) Received: from pps.filterd (apblrppmta02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.18.1.11/8.18.1.11) with ESMTP id 68E4cnvn811237; Mon, 14 Sep 2026 04:38:50 GMT Received: from hu-ffaruque-hyd.qualcomm.com (hu-ffaruque-hyd.qualcomm.com [10.147.245.31]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 68E4cm1m811221; Mon, 14 Sep 2026 04:38:50 +0000 (GMT) From: Faruque Ansari Date: Mon, 14 Sep 2026 10:08:47 +0530 Subject: [PATCH v3 3/3] arm64: dts: qcom: lemans: Add PSCRR NVMEM recorder node Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260914-pscrr-provider-v3-3-c45cb16542e8@oss.qualcomm.com> References: <20260914-pscrr-provider-v3-0-c45cb16542e8@oss.qualcomm.com> In-Reply-To: <20260914-pscrr-provider-v3-0-c45cb16542e8@oss.qualcomm.com> To: Oleksij Rempel , Pengutronix Kernel Team , Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Wim Van Sebroeck , Guenter Roeck , Benson Leung , Tzung-Bi Shih , Srinivas Kandagatla , Daniel Lezcano Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-watchdog@vger.kernel.org, kernel@pengutronix.de, Liam Girdwood , Mark Brown , "Rafael J. Wysocki" , Zhang Rui , Lukasz Luba , =?utf-8?q?S=C3=B8ren_Andersen?= , Guenter Roeck , Matti Vaittinen , Ahmad Fatoum , Andrew Morton , avaneesh.dwivedi@oss.qualcomm.com, Umang Chheda , Faruque Ansari X-Mailer: b4 0.14.3 X-Proofpoint-Reinject: loops=2 maxloops=12 X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTE0MDA2MSBTYWx0ZWRfXxamR2s54QrSk lrhUMVt6i5swlXs8Eugp2YV4BfAcwRcUiecNGE7l/2ranUNFUw4Ck+qfDJtdOzUQ0IQ1PAfebyY sHQY5hJBDOh/UZ889A83TlUsyNvwdqE7jnicN0RpxO52sMp7OpMLbjpAEycH40N0zDBrnueDLHL nBCbCVIjT515aASv4eG2NPOWEY0Wodjss0ihz2hd45ebUOcTAOkUHgEY6hDbQhmJ1wbvugPul9C gojYdRm/KvoZbEWTjLtqrU0BQiuiT7DBP6p3RkAlCwBJ54fTm4o6HFYO+72HqjmtJf7uX+s8uGA AF3bImR5QYPzApIIBMlemqYxs99tVbjOwvZAhk+UC4BmzHIEnaHKPN5XNnK6cvNnF3Lm8Lf9Z9Y hFoW3d0KxKg/SutJZKP7SZDfsrp3ca/iOk7orKYZZ1CJfYlEbdkd4xIB/M0FJ1Sd57Ks91S1F0h bb0uSP+lTHHhLMPTviw== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTE0MDA2MSBTYWx0ZWRfXwDXB4lZJcA8y PdCYNEEWkn0QCI9cRlLSiOeQjSIFgYPqXaZYLu1pQSYgt8ODJ9qjWsVO5c17n8SXK3JPovswc9H 9E39I4byS58O16d3GtO/b6NwttTpMd8= X-Proofpoint-GUID: Q9XvnXEMV2OO3vUJYlZxGVu3m5fb4CKC X-Authority-Analysis: v=2.4 cv=OeUNnRTY c=1 sm=1 tr=0 ts=6aa77a5c cx=c_pps a=Ou0eQOY4+eZoSc0qltEV5Q==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=gg1OsQjKW_mRkEzLfZkA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-ORIG-GUID: Q9XvnXEMV2OO3vUJYlZxGVu3m5fb4CKC 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=2026-09-14_01,2026-09-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 priorityscore=1501 suspectscore=0 impostorscore=0 adultscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609140061 The PSCRR NVMEM recorder needs a persistent storage cell to save the power state change reason before shutdown or reset. Without a described NVMEM cell, the recorder has no platform storage where it can preserve that reason for the next boot. Add a pscrr-nvmem layout under the PMIC SDAM and describe a one-byte cell at offset 0x49. The recorder uses the lower four bits of this cell to persist the power state change reason across resets. --- arch/arm64/boot/dts/qcom/lemans-pmics.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/lemans-pmics.dtsi b/arch/arm64/boot/dts/qcom/lemans-pmics.dtsi index 500f715931aa..180d180be3c6 100644 --- a/arch/arm64/boot/dts/qcom/lemans-pmics.dtsi +++ b/arch/arm64/boot/dts/qcom/lemans-pmics.dtsi @@ -186,6 +186,17 @@ reboot_reason: reboot-reason@48 { reg = <0x48 0x1>; bits = <1 7>; }; + + nvmem-layout { + compatible = "pscrr-nvmem"; + #address-cells = <1>; + #size-cells = <1>; + + reboot_reason_persist: reboot-reason-persist@49 { + reg = <0x49 0x1>; + bits = <0 4>; + }; + }; }; }; -- 2.34.1