From nobody Tue Feb 10 10:58:55 2026 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 A2BED36A03A for ; Fri, 30 Jan 2026 10:44:50 +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=1769769893; cv=none; b=QgboiQZtDPH1JDcS2KAxlkkEY24d8mNb+ZEzZflkPryRcZqEoVEWKlKWyB8VwXcL/pWpxk/kyvMntQ5DsegXRGjo+SU1HeKRV4DejsHQ0xbGetvsLdCQxh2iSrU8BJu9PErZSfPS9nHFLT7xKqhU2VL3n6vfRP+wTGLDIqxJcR8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769769893; c=relaxed/simple; bh=gXjLhnZi59oOsbpgrLnWCxeacGmYdwxDOwfKkKznY38=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=dG+sq5DsG+M8KUCjJDc3qaaN9f2NDIq4H4W3sblbVHNhMESdhjKxn/CpyrIh/B8qWLqJaDp6OkzgljfzjHLrpaSyH6WV0CnfJTgNAuH5VHpZabgPyyFV7S9nDG4LYH3gteRM6/N+IZOHE/AQ9cu22D0ZiHi4avlncP+mYQVtsu8= 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=evFskupP; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=LnyKxjWj; 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="evFskupP"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="LnyKxjWj" Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 60U3VhW31022278 for ; Fri, 30 Jan 2026 10:44:49 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= PUD22ade3PdMTmII8Q4XbTg9RtosH4P7yKCZg5lJof8=; b=evFskupP39VRPEPS Mzu4RA90HWXBPF0o6MOSymnz0Uo9GSUeaI2GuZKZ4OFR8xoFXKojdC2SPWCav+4m 1M9fJVT6Eh09gAyk4dEWKqz0GMXJEgGtu9CS6DFbD7a1XXbcVg65pIWSo/wrOjrF I7/sTZJS3pi/XrSB+0obl1rN4Pm9p3ngjrjSS+GxDg+vQGw96WsR6+8WBWClDGKQ RYWd8ZRrVEp851oBoaSceibtydd4Z+IwdscL+c/bLIvU4K1jSjzDOUgwykIOLM8A kPktfJiSlBxmGFn+JbpEZ/ovWCiMZJW2hLh9Vvm9BHoHjahMoBup2yNCJ7j16LY5 FpvQqg== Received: from mail-pg1-f197.google.com (mail-pg1-f197.google.com [209.85.215.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4c0e3ka8v3-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Fri, 30 Jan 2026 10:44:48 +0000 (GMT) Received: by mail-pg1-f197.google.com with SMTP id 41be03b00d2f7-b630b4d8d52so1400656a12.3 for ; Fri, 30 Jan 2026 02:44:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1769769888; x=1770374688; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=PUD22ade3PdMTmII8Q4XbTg9RtosH4P7yKCZg5lJof8=; b=LnyKxjWjh9iC5OC2949W1p4DF4sIHH7H7thiAJac14uMwwEcI1qZSeN4ktUt6YN0D8 2clcNJkAXOiZ+iJsOU262clkZnOiiyeG3C2ize+pE0Oujnd7RFUA6roWLeWkT3JYC7EM AZojkCktiiMBgLjqnK4nOI/pPjr2NrHNhzTzWa9+MZMa4xUOJJXyGylSQ5NbSc2yGJm9 pOYkSzUFlN2F4tkXAN/4bBU9p/ISZAKqZFSNmGjTtI1+56NgUWv8/6AicVeGh1InU+uC dPcfe+ac1RTAfm3nqlZ49wQYJzbJ7OfdR8obxjN9UyMxc+xESkV/o+k1WtkeLUi1MoCv GOVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769769888; x=1770374688; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=PUD22ade3PdMTmII8Q4XbTg9RtosH4P7yKCZg5lJof8=; b=tli6AsQWqZGfkGNRQfMvH8BTCoSB77htcrMNFNBTCzKBhBtixjSwShmFnLeXl0dt0Q vcpPwgk0tN/hHQSNx/YxDByLaRISAdoNVc+De4jlXWMiAA2JnLAnOGGDhIg5QCgocgBT 91iQfbTEQeggmNmlA4Mr0YiYTbI1vS474SkW5pgQY31imqqSN4EwY+gGqbAeJlTMj7BA jgcsABxvTvxoxk1aFUwTL9H2Eu/tQRTWuz5eS8kkb2I1io4UlP9ZyKN4ZyKMSUPz6PAJ /P7Ih5m+AgBVVd+l1UD+vZJekZWC9ETPgW01jD/QFlGfCabHc6EPXYUCjJIKbhXmkE2f 9Q5A== X-Forwarded-Encrypted: i=1; AJvYcCUHmNkveX2gaKhpmmSdcLB1XR2SQ27vLBiGbBTKHLfEZzmAxIQ8tfHjzy+GQnYxWtks03jBmzN6HxderRg=@vger.kernel.org X-Gm-Message-State: AOJu0Yw1KHuZW6/z93s4vHiyPzmacUkk3u53/rUw1Lyk62f1lCz74H4I ScWg9XFcbCiacM6c0OQvc+T6GlkSzPZHwZZrEFlOSv/VW2mcf0131rHl+MjHFmG6iWa4GQngvS4 +2xbK5RwjS52h+xRNmOhEKpuskO0QLEadtYBqMPOS109p4aA0eg/Yb/p2lfJ9XFGHY7SYC+DihY o= X-Gm-Gg: AZuq6aJ2515PVfmvwbo2zhKY5NbwRWemaLcB6ufDWXuTw4Zr2w5WFxyUWmRo8OFIex6 seP2Opt8G0bCQy90DmD9UM11Y6jXPDRQlqSMJEWaQTxc0WFhriWOjLoLMWeQppF+Fdzk4SYwkKL 1m3kChLM/OR6EeacgJF1e9jnkJlhKbOCwg+N8er2Hk7SCgxJIBfLAck/tVi74V2PaMeIKKccMts nAZEKzu4dmH8a6tA16bt8DQafHojiRBFpIsrqqT4jwlcuCzPqLa5MTezg4HiB+lsNUQ4HNGUupD +eHHI1OgYyRTfuJzKDY08zCFO+RKXuhlQVjvGWwenOGjKZJgrnvDpCv8Gl1SeJFSkZNI8fV9q/h DCSmxtDSPfvRUyeknQCi9QUCF0+da8YyPs5eQYq6Jk05VTY1CWx7znLNg7xnQdUP9VhCWWPnwf2 1Jamvs+ApIvNy0hotjJ/EIcQ3Tg2EcnzMuK7VBsaIwPqMO X-Received: by 2002:a05:6a21:7906:b0:392:e5eb:f04 with SMTP id adf61e73a8af0-392e5eb12f3mr1673097637.72.1769769887757; Fri, 30 Jan 2026 02:44:47 -0800 (PST) X-Received: by 2002:a05:6a21:7906:b0:392:e5eb:f04 with SMTP id adf61e73a8af0-392e5eb12f3mr1673074637.72.1769769887303; Fri, 30 Jan 2026 02:44:47 -0800 (PST) Received: from hu-kathirav-blr.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com. [103.229.18.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a88b5d92a9sm71231465ad.69.2026.01.30.02.44.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Jan 2026 02:44:46 -0800 (PST) From: Kathiravan Thirumoorthy Date: Fri, 30 Jan 2026 16:14:31 +0530 Subject: [PATCH v6 2/5] arm64: dts: qcom: ipq5424: Add the IMEM node Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260130-wdt_reset_reason-v6-2-417ab789cd97@oss.qualcomm.com> References: <20260130-wdt_reset_reason-v6-0-417ab789cd97@oss.qualcomm.com> In-Reply-To: <20260130-wdt_reset_reason-v6-0-417ab789cd97@oss.qualcomm.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Wim Van Sebroeck , Guenter Roeck , Rajendra Nayak Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, Kathiravan Thirumoorthy X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1769769874; l=1507; i=kathiravan.thirumoorthy@oss.qualcomm.com; s=20230906; h=from:subject:message-id; bh=gXjLhnZi59oOsbpgrLnWCxeacGmYdwxDOwfKkKznY38=; b=iyCnNzRbBhnBPvMnE4k7TYWY2XLp7FU3ecZLTl2matj+diTY05JLq+kQ9oHgrsuZJ7P1YpPsi /7qqukJLPccCZvmDd9+IJ9XY38LrA4VeXr0xQ7i38XGWjcEbN1O8Kz5 X-Developer-Key: i=kathiravan.thirumoorthy@oss.qualcomm.com; a=ed25519; pk=xWsR7pL6ch+vdZ9MoFGEaP61JUaRf0XaZYWztbQsIiM= X-Authority-Analysis: v=2.4 cv=VI3QXtPX c=1 sm=1 tr=0 ts=697c8ba0 cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=QDJorwyCwNfNgOuVDpwA:9 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-GUID: DLx1zkIm18jwPNvc7n_Vr6OoW3eiIRSU X-Proofpoint-ORIG-GUID: DLx1zkIm18jwPNvc7n_Vr6OoW3eiIRSU X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTMwMDA4NyBTYWx0ZWRfX3G/Re/DQMotO T6gl+Jpip+NUhuuj0dxyhb2NIz10rgljKYp8BUwFKcRgiAieHJVguUd+ce8l0v0hCMc+tXaf1MY Xjutgg75Laq7jVjQ2GQ5nId5/ZBdZes12SUtRYHCybWBX0MXNXFZevfhdky/rZfrD2lEJWNjrVK /MiDQRZIL7Ad+gnJri9anp37Yu8fpxWOeObK6CO8yF5DdoFCEYUyPgkcKAPBBK0bTSX9CNiV/vT hAMerPBZTSntyNKe2v8ThxQhfU4e4sU8VuBLtpBUuAyF5HPyFlHOEuxx3cLGeiaaCP0JhX0L5rJ TCdCx0Rq0yO36QJmq3k9v6qmDLTVxfG2ANGaM7VeY8X2qK+w9yK34Y6NI2AQKcG8sbCQAjgdMs9 K22LaP59z3FRkwPQHyFlBlbEB2QqM2G30DV7q+Pc968mpvh+PGq/gxxaV0QRSVMgOX3rf856CxL dPiTxACREZfdfF1CWpA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-01-30_01,2026-01-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 phishscore=0 bulkscore=0 priorityscore=1501 adultscore=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601300087 Add the IMEM node to the device tree to extract debugging information like system restart reason, which is populated via IMEM. Define the IMEM region to enable this functionality. As described, overall IMEM region is 112KB but only initial 4KB is accessible by all masters in the SoC. Signed-off-by: Kathiravan Thirumoorthy Reviewed-by: Dmitry Baryshkov --- Changes in v6: - move to mmio-sram and drop the Konrad's R-b tag Changes in v5: - No changes Changes in v4: - No changes Changes in v3: - Picked up the R-b tag Changes in v2: - Describe the entire IMEM region in the node - Explicitly call out that initial 4K only accessible by all masters in the commit message --- arch/arm64/boot/dts/qcom/ipq5424.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/ipq5424.dtsi b/arch/arm64/boot/dts/qc= om/ipq5424.dtsi index eb393f3fd728f0b2fc8cd93c849f8c170d76e312..90790f99f0597b63801d4e07b9b= 72cd372ad46d4 100644 --- a/arch/arm64/boot/dts/qcom/ipq5424.dtsi +++ b/arch/arm64/boot/dts/qcom/ipq5424.dtsi @@ -697,6 +697,15 @@ ssphy_0: phy@7d000 { status =3D "disabled"; }; =20 + sram@8600000 { + compatible =3D "qcom,ipq5424-imem", "mmio-sram"; + reg =3D <0 0x08600000 0 0x1c000>; + ranges =3D <0 0 0x08600000 0x1c000>; + + #address-cells =3D <1>; + #size-cells =3D <1>; + }; + usb3: usb3@8a00000 { compatible =3D "qcom,ipq5424-dwc3", "qcom,dwc3"; reg =3D <0 0x08af8800 0 0x400>; --=20 2.34.1