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 25B8A372674 for ; Wed, 4 Mar 2026 11:17:05 +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=1772623026; cv=none; b=E5Qx2FF3NkBEFXtfo1GOjAmnZMXd3WTQbg24iCRRXFbcx8S5XI1xuuhD0P/tVqwESvacziTFeGj19ZY0ykg6tLxtpMUTqeAvBIMvsOKgjbXXDtUj9oJPKDV//AxnUD7jTIeAeKlo2OqY7Oscyj+WpjpE+tdCLU/YQa9HD4dfL7Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772623026; c=relaxed/simple; bh=zzFtqBWtH6Dyz1PW4u7LQ+cdDpOkgipEInVKvdMpbps=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=s9wL6ayGZGQ9K6KNn4sXDe1Iu4z3uq8W29OdVod8BoM/OAyF+/37OOtuYPKRMdDeIlavtjdrtU+HKkIi/JllPVjeJA1SY9oDS3iUG7kGWc7z6Qx/iAsa0J89b1Jrw3wzAkwnOA1i0t/hMAmIcPfVvKu9WZ3u7y8Y3wVJw7ddx9g= 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=pg6RJo+7; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=IZT1GUoa; 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="pg6RJo+7"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="IZT1GUoa" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6245SO9e152520 for ; Wed, 4 Mar 2026 11:17:04 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= LJAzlEZvvss30vWHUxUWvbLG0CgV2anuQPFTAryGkzU=; b=pg6RJo+7kdIbLWnc w3k2aEf0ZvRr3f0JpVHsRr2A6Qi70uBfld7Ep9rYaVGYOz3jV3jHhHuAvjKlryAd tuuQD7b7oB15qLAYT1Kaeqkyi5wMxiLL/Y7Rr8JiRtV48+YHmUpF7xdyg6QAErTH EtpHz0ot6K9ouIlzJ9UUC2bgT9O//hCk7ycyfaR+T88z8DFBs/y3BMpheT3ue5hM 0DXeF0NUDA9ucSsMfYSzvtruUet/voVSGIICYMhlDFSxGHJT50EVccF/PRpDYjiY HQMARM9gN3wJUbrQfIXhdT/jmvULbUVeUz49lvq6I+5g4Ceej6mxXi7f0QiQxtmi EDSKeg== 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 4cp3tvkd5s-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Wed, 04 Mar 2026 11:17:04 +0000 (GMT) Received: by mail-pg1-f197.google.com with SMTP id 41be03b00d2f7-c70ea677571so4083220a12.0 for ; Wed, 04 Mar 2026 03:17:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1772623024; x=1773227824; 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=LJAzlEZvvss30vWHUxUWvbLG0CgV2anuQPFTAryGkzU=; b=IZT1GUoaM1yRSyoeL+IdvSyX1BudX/4jwvxXsd8D2eY8RQVLmC7bsdMgpOR5q3G+d/ vRUlq6Eo06qGCM1fZfkRG56PSleHlhC7grf8+e/8xlONY+c3OHmJs2bigVBCMPS0KEl2 0Fddw1PvFQk9fEtVwQ8+ChsOqggWcPu2QEk8d0zmiUScPNSd8Jxq0f3RA9qmzx/YXhrq S9NLb6iTl0J7hnFSr+LkWQy9a9NCgjgk07bjEgD+xuJOoNur4yZBKAEMl6F7apKSm9nO 2GQQn+fSWYssfJEaJ+cr9TGQAzWZrnerRMIg3Hw2Hnky5dX96UTKHsqirWJVWjVAlxoC gzJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772623024; x=1773227824; 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=LJAzlEZvvss30vWHUxUWvbLG0CgV2anuQPFTAryGkzU=; b=IqQx5V1wQb7qULHi5nRre+VVS15bHr4C4CLtMrldj3MG/Q9Cgsc0koODNMoPME2Elb 5eAixG6yxnxJMNI6bvPGP4ZSDFMnmJ3/gjx9KmmJ6pTUf2AP9LhMQlqjbrCSjgqaBvZO mPZtbag2wng2YXwEdytBPH+I+QLEIsO/h6nB3pfzxbK0Bx2TjNOp8btIMW/HrXMJtk9E C93oIokhWhZ2goolAhmX+uZlL+6jq0B0yiqUt5y+hjeQ3Z/jZVF0UpyByfZ1lM5VbirV CHc8YbWAHKIsu9HBNDB7WqW01ipkaOxKt0rt4h40lD4HXXG7O5LBS5vNh0iaKhkR8Q9b DYEg== X-Forwarded-Encrypted: i=1; AJvYcCWlfGiF/W1Coo0sF9cH7/IYe5RV6CKD6ueeyNP2Vp3+W347k0d7fqbrWIh/JjlHe4CdjrySeqI0PRXqYxCt@vger.kernel.org X-Gm-Message-State: AOJu0YxdBjMlDAo6lJel4lsYgAsLYT8DL4RhD/hSomTEW3a8n5X3u77u 4qX0I8UUwiy7cjIy4jXdBXfLRgjJjhx4UKf8MAI+Za1e9WyI617uTumnB9lAYKHJHgos+2Xybrd aBpxTDFpQm72fSfARqStD/ZC59y29o/R2YGeox5LDZ9eiBP6taisJB832aE1rXMK2KhO4lJwU/K Gc X-Gm-Gg: ATEYQzxrIjCNRNCFNB4b3+A7ExnHz8xh9Z+YVXlvf5L0jrHIGnTlPpZKaG73XAIiQhD P3sMbJtT8spz3LLtSpjoiym8iu/S9Ih1lvKztB5B17FE0z6w609HBin034WvpLeCQhKdoTws+rt nfS4o3vap8mQypnkRtpkqWGFIYCi3+3A2M3EM02VOwP5q3LrQQuLRrP8ya+8gNh+r6BM1e6C0+d rUm6IaDXAhtUuty7Sm/gdL3RSsijr/s0x8vopHM32LEqVpSd47mtsKyqJcwHdbhzFo/7XuYt+1/ +q5hKmRprhqWVeNMLJUUTSfgTIPCtnGD+kurvYw3lYPwyuXEI7+rcz38S135FgjvXJftGkOPL9p ArmYAZodE6W0gxFHVp34cZ+YJO+SIlNUl1tAQqvm29z2lmEwVqckysXy9PTsNbEe1IQ== X-Received: by 2002:a17:902:ce8e:b0:2ae:4a4e:1e25 with SMTP id d9443c01a7336-2ae6aa649dcmr17231115ad.25.1772623023346; Wed, 04 Mar 2026 03:17:03 -0800 (PST) X-Received: by 2002:a17:902:ce8e:b0:2ae:4a4e:1e25 with SMTP id d9443c01a7336-2ae6aa649dcmr17230875ad.25.1772623022848; Wed, 04 Mar 2026 03:17:02 -0800 (PST) Received: from [10.151.37.217] ([202.46.23.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ae534088c4sm106087535ad.26.2026.03.04.03.16.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Mar 2026 03:17:02 -0800 (PST) Message-ID: <0be1b15f-df0a-4ff0-ac97-8aaa46dd9b7c@oss.qualcomm.com> Date: Wed, 4 Mar 2026 16:46:57 +0530 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 v3 1/6] dt-bindings: sram: Describe the IMEM present in Qualcomm IPQ SoCs To: Konrad Dybcio , Krzysztof Kozlowski Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20260228-imem-v3-0-20fbcc1a9404@oss.qualcomm.com> <20260228-imem-v3-1-20fbcc1a9404@oss.qualcomm.com> <20260301-secret-exotic-nightingale-80f55c@quoll> <4cf9c98e-767c-44d3-9e71-bcc790e83997@oss.qualcomm.com> <6606bdbc-95b0-4adc-92e5-cad70d250cee@kernel.org> <33737c4f-b668-418c-ab03-f27ed3b6fcff@oss.qualcomm.com> <78d08114-d573-42be-9cff-39c228c68848@oss.qualcomm.com> Content-Language: en-US From: Kathiravan Thirumoorthy In-Reply-To: <78d08114-d573-42be-9cff-39c228c68848@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA0MDA4OCBTYWx0ZWRfX+gIjmknPk+AX 3H5TIGLUP7RbDcmjxdwi6LYA6BiFKnypf50rveGCgrP2EX/t/cbx9u1Lr3r17pFuh1a56PckZZA ph6wIPx/t1YhdXy22thwgK3Ttf2/yiw2BWB+6AuHlzmroRBb7W94DS3n0i22qKwIjsazmYY5ZUM oizW0yXXfUWkLdgfanmoQGz+WDqtlpn0tVBDc7HG2KJJURKi1A5gtA9JghuYURYg025b2PazZ0K HZvhE3IRInS/ltdmRr8VxEPr4j+3I5sXvp/sQ/CM4YxQco+uU6UPxix1/+OdI0uYUc3g0TV/su8 ONW6TXBR4K3tcnp/3AFlaeuQWhW6nIzSWxDx4fl17xZqM5YQMLbxuXuCyq8/6LxEzJL7h0CsLZj n7KJvjy4eLV8LMaLJHX9Tj6PuFpk/gSSRoe8odBDW6FsOR2BhJWP68sNEAcNChTU8+uNk+L8pm8 kQ2/spB/nqgvViVavqg== X-Authority-Analysis: v=2.4 cv=VYv6/Vp9 c=1 sm=1 tr=0 ts=69a814b0 cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=j4ogTh8yFefVWWEFDRgCtg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=EiiTORyVyZtV5cGE680A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-GUID: qo_7NpVWU7akkfQUtccqmFMw4zRBTzYy X-Proofpoint-ORIG-GUID: qo_7NpVWU7akkfQUtccqmFMw4zRBTzYy 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=2026-03-04_05,2026-03-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 bulkscore=0 adultscore=0 spamscore=0 phishscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603040088 On 3/3/2026 4:18 PM, Konrad Dybcio wrote: > On 3/2/26 5:33 PM, Krzysztof Kozlowski wrote: >> On 02/03/2026 15:56, Konrad Dybcio wrote: >>> On 3/2/26 3:54 PM, Krzysztof Kozlowski wrote: >>>> On 02/03/2026 15:10, Konrad Dybcio wrote: >>>>>> Also not accurate - "sram" is not the reboot reason, which has node name >>>>>> called "reboot-mode". >>>>> What I was referring to is: >>>>> >>>>> patternProperties: >>>>> "^([a-z0-9]*-)?sram(-section)?@[a-f0-9]+$": >>>>> >>>>> where the 'sram' (not 'smem' as I typo'd above) is obligatory >>>> I know and sram is not part of "reboot-mode" name. It is "reboot-mode" >>>> in existing binding and DTS, not "reboot-mode-sram". >>> In any case, I believe it'd be good to drop that requirement >> Ah, and one more thing, the syscon-reboot-mode is Linux driver with its >> own Linux requirements - syscon - so probably not working with sram >> bindings. That's another reason full binding should be posted and tested >> - I speculate it simply does not work. > It won't even probe, we talked about that a long time ago on a similar > occasion > > https://lore.kernel.org/linux-arm-msm/f6b16d1d-3730-46d1-81aa-bfaf09c20754@oss.qualcomm.com/ Sorry, TBH, I'm confused here... I agree that, DT node should be as simple as below for now until the child node is added. sram@8600000 {    compatible = "qcom,ipq5332-imem", "mmio-sram";    reg = <0x08600000 0x14000>;    no-memory-wc; }; When I add the child node, it will eventually become like sram@8600000 {         compatible = "qcom,ipq5332-imem", "mmio-sram";         reg = <0 0x08600000 0 0x1c000>;         ranges = <0 0 0x08600000 0x1c000>;         no-memory-wc;         #address-cells = <1>;         #size-cells = <1>;         restart_reason: restartreason-sram@7b0 {                 reg = <0x7b0 0x4>;         }; }; which seems to be matching with the binding requirements. and the consumer can reference to this node like sram = <&restart_reason>; I'm not following what's being suggested here. Can you please help me to understand further on this. > > Konrad