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 0DF8D393DDA for ; Wed, 25 Feb 2026 11:28:37 +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=1772018919; cv=none; b=pC/9pF3AYj6ULBOOjT0ea3mFa9n1g9yT1tE4qXYoxTPY7w5ECP5E/i4naYrA5psJvR2KNPc8CuzUEcqPW5otaba5FdvB84jLF+7GAocfR3CAJzPtI1W7aKJRwK8AOtXx2Ij6f0MRyqUqBE+RyYMWvW5MAFzKx3cDBZoaWxIkNM8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772018919; c=relaxed/simple; bh=19w615IskjE5TCjnvGG3ZbxMlnmV9tvKUkDfVUlxM4I=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=hKlqvmfLTmCCT/PWi6HbkRNgfC1hTAw5uAtkhuqdlAXHwKIilda1P1DAcMnsJUWtTtvUCRq27TRb+kcld7e7zsytrn+aFzkflo2oBwyz9BHVBwh577P8BZ+sPJ3NLHuZ6g9A4VycYBxtKYW9Dld7d7ww5U7oMTwu+CU6E4/Dc/4= 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=Kx0SZLFy; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=PAPF25ln; 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="Kx0SZLFy"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="PAPF25ln" Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 61PB35j6788731 for ; Wed, 25 Feb 2026 11:28:37 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= CByXCvN4Rqtl+FBdMITE6H+cYmdBCI6IUx2Z2zsQeog=; b=Kx0SZLFy9UL3geLb 7znk2uXL0IpV6Qsb2XFefgUjKTFWVhCpKkEiCCU5rR6569Ma8gPVWiGrHANK6wnA hoFD7VYqi9r4S58NLRTqPXwHvMp5nKi9zyrOk+pndBqgBZCmZn6hEz0GZJ+xADnF 9x+CVmo7lP+8qzuUIuR88KiRj8q3iTVdYnAO6Xaqf4ZJNoOLnm2TGcoosf1dDcbA DKiXiDr32M1reG8uJ4RXyTiR5hrQiby/DxrtRI9c5VikjJYSDKhHi3g/36RlDSBM V9/SKzq901g+RsLi/E/HEmlhsFWulSLIJVylBII8dzAh3/t7RUG+n58ew66Fd5oc SAK1LA== Received: from mail-pg1-f199.google.com (mail-pg1-f199.google.com [209.85.215.199]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4chyv9g1sj-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Wed, 25 Feb 2026 11:28:37 +0000 (GMT) Received: by mail-pg1-f199.google.com with SMTP id 41be03b00d2f7-c70b75aea3aso2722551a12.0 for ; Wed, 25 Feb 2026 03:28:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1772018916; x=1772623716; 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=CByXCvN4Rqtl+FBdMITE6H+cYmdBCI6IUx2Z2zsQeog=; b=PAPF25lnD3DbpiF8tTIV8Gjqz5cDzI9W60+pnIkgyWYZxS9wRv9edKluOCGWmjXKsr jRqk+zboUvgnjUuuS+YOWcCyjgTtoJcY4FuGiXIEooJbEaTG7LDIZ1+enwFjq2rScsAW ss+guy9xNB/Imfd2fcFeYuZDe48EeyDjJm+ZWC8paTFu0oB06QbyLLE5jgZxy6Urdg52 GT3YHzPlwbw+2ZfDNDtXiUO0lcfirVGcT+YUrCwLx1sWy6/zTHSd2GyvGe2sN5NOjCCC 3/cyLtv5DbnmEQeZ1q8Fgtc6ZcHQh/oP5/HVBPAhhzWniCzsw+ibWisxQOJ2k3kLjC5j PCXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772018916; x=1772623716; 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=CByXCvN4Rqtl+FBdMITE6H+cYmdBCI6IUx2Z2zsQeog=; b=PWOnR3PnsrTPjHqpFhPSk2YgeeW6I9N6HkQmbwta4ZFv6EpN/lLIHccLWZMaiUKmp1 swZ41m7GXMni1tvuHvQI6UPGVC3OiExqtsa6UtudblkWDJPiiGu7fvuxyZ+6cihXYubu rCkQHGAJlTcXbjCmbob68TCy2C1lee3sp+rgAtFgnNzkx0JZBtdkTWqTr0xeuJVQXbTj 53zFd7e6OuzpbZIq0tjErV+8Q145Z8DGSD+1ztpIHhmkxoDBZi1ZTjtlHSmk75l9kbxZ 1/c8tNlSRl2fLVi2EFdOYRgEr5soGsnn+Ybduv3fKD+RJZlXKqLxefkPOSU3CuPV1ksS OpnQ== X-Forwarded-Encrypted: i=1; AJvYcCVLvW7kFmzMMK3M5n+0Vw6c6nW5Frux3xxJtjRyVhXuEFE5ZB95uwd0ZKN/I78jO5hfSqImXmvIMpa2ChM=@vger.kernel.org X-Gm-Message-State: AOJu0YzAYxAO46rn6BUj4Rq/xApflLcADpJTKPOYNYpaJTCKL2P3K4rj 1KgeDivRaFzKNtsUh8Bt33PF/yn6DmG/Rg2jTHUdQbn/LiE6sS74AY1mz1+GWYCROioVaORgSAX pCZqW15HyxMyb2IBs/NnOFwU74SrOWMiU8dCP60GbAWXPuXcB+5fs3vyWBBJBrSFmoPM= X-Gm-Gg: ATEYQzz3/Eol4k7zzzPY6vwczvuUdBavc/8q9iL6u8jTos7kyROhBipHJlH073UHJu5 vfvEHB97mqjTZdjeWDAGvFZPUsVjmihpTPm1YDGGULXg+yD/FLAl/oXvCed4Ap5FHBmnEDm66pX VOOJEw2ej8DHrjiZNCcV+i8G/bfu2/Hl9SIkR+6X0ffXPiqhHrofk63nXzhe1CMYYXra7p0AhBX cN3wSk8M96tX1hDLqg++pbVfJSo0ghJeyQdtsmNI+4emYs78ZH1pKWz9MgeC9aiHg9KfiN8Lry9 QG4NqqcA4cfG+Fs+rqBcU/iFA/We9iVnDxPwMo3k7SmgKw+C3eywrHznBUkxciObkuFPgbOsJ7M VIpWHVEmcsZ4QEJulwVDDtzH6tHnLIhc0WWHzgd5JhShqhbU6VRgtgsm1oMtAA6s7 X-Received: by 2002:a05:6a00:2d9b:b0:824:92b7:63ac with SMTP id d2e1a72fcca58-826da8d75e8mr12374526b3a.13.1772018915994; Wed, 25 Feb 2026 03:28:35 -0800 (PST) X-Received: by 2002:a05:6a00:2d9b:b0:824:92b7:63ac with SMTP id d2e1a72fcca58-826da8d75e8mr12374508b3a.13.1772018915504; Wed, 25 Feb 2026 03:28:35 -0800 (PST) Received: from [192.168.1.7] ([122.164.81.73]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-826dd68998bsm15318534b3a.16.2026.02.25.03.28.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 Feb 2026 03:28:34 -0800 (PST) Message-ID: Date: Wed, 25 Feb 2026 16:58:28 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 1/5] dt-bindings: sram: describe the IPQ5424 IMEM as mmio-sram To: Krzysztof Kozlowski Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Wim Van Sebroeck , Guenter Roeck , Rajendra Nayak , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org References: <20260225-wdt_reset_reason-v7-0-65d5b7e3e1eb@oss.qualcomm.com> <20260225-wdt_reset_reason-v7-1-65d5b7e3e1eb@oss.qualcomm.com> <20260225-purple-rat-of-blizzard-dafcd6@quoll> Content-Language: en-US From: Kathiravan Thirumoorthy In-Reply-To: <20260225-purple-rat-of-blizzard-dafcd6@quoll> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: kmWd0uJZ89uLqzPzkVESM3NZICJqYZJ3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjI1MDExMSBTYWx0ZWRfXwF8jAawj0pAh Dc3jDgkUw8Obb3hq8Y3upik3VbQjTY734C1AbhOEWwyyeDjF6yEKirivoe+y0kLqHEIYfSlh3Sg 4EWoHuOWt6AKN/VaA7cLDQWVBBTasthLS79b0qJO3lxQ/R5iPYYggalfiRaX4YTnoV0qd+ZQzVI ideavgvCpOQeGZwViTQ7lMM+da+wYLScq6oCCP0RE4Rv96OXuJGcIBTHvwbWAE38Bz2e7xbokt9 aK98zdJr6c5GsLrtRwYrhYZTKztIAG83sgHxcsc2ZpY1fhzThJBoVIHfxs0wCK4cJ3lJtuIOgeF Njjykb3dNOwbgtDKUe8VejmsQmuRDF1ZA9ch7f4klLF51BtoefNwUHI+fkjm3n4kOHkzEl9dO/N g6aR1jN2iyyKbyChJdiK9NZqMca2xPmdV/X+LqMLfTWfT3c17XjOZ+VgEGWV5nw+pnA4M0j/IlF FJz08ToVGlVZ5q9RYxA== X-Authority-Analysis: v=2.4 cv=GZwaXAXL c=1 sm=1 tr=0 ts=699edce5 cx=c_pps a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=mNPf3JdYh40LbGEelsvk6A==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=uv-h1xUkWEa4x-JB8yoA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=_Vgx9l1VpLgwpw_dHYaR:22 X-Proofpoint-GUID: kmWd0uJZ89uLqzPzkVESM3NZICJqYZJ3 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=2026-02-24_03,2026-02-23_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 bulkscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 suspectscore=0 adultscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2602250111 On 2/25/2026 3:43 PM, Krzysztof Kozlowski wrote: > On Wed, Feb 25, 2026 at 12:13:10PM +0530, Kathiravan Thirumoorthy wrote: >> Based on the discussion in the linux-arm-msm list[1], it is not >> appropriate to define the IMEM (On-Chip SRAM) as syscon or MFD. > The reason should be here. I asked that referencing 3rd party resources > is not the same as providing the reason. Sorry, I misunderstood your statement. Let me rewrite as below. Please let me know if this is okay. "IMEM shouldn’t be treated as a syscon or simple-mfd because it’s really just on‑chip SRAM, not a block of control registers or a device with multiple hardware functions. In reality it’s just memory that different pieces of software read or write. Describing it as generic mmio‑SRAM keeps the model simple and closer to what the hardware actually is." > Best regards, > Krzysztof >