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 63A3641CB20 for ; Mon, 20 Jul 2026 14:00:55 +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=1784556056; cv=none; b=r3P6TkhdYQUACs/AHZruEcAke15Ao6xgAFgr/j96b98s79PFo1+dlU+8yMSgzLaKQmgCIXBk0rIvRe55F1WVRSdwpskcD/a7E/VpnnB+dg5eeVphQw392zOIbaN0OqV+FOFeTKGdwiWa1mOTVLpiiHPqQFQR++f2dGZNG2NaeFs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784556056; c=relaxed/simple; bh=ars068aHZ1zh6r3O6lVpEYUVNtKxsXYVCmqzKpHYpXU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=LfFYeeRIdDhKYKsNpRxNr3clfbzvdfkGl5pD6ebcCaobGPreWAw0fKwhqWaVX6AzHtsWUjwznMeuegmGwT1xBC6J5IugFDGGtcm11KOTxFLihIam/HBTwkoX3rJiybc8iHtuyA9cndOzLB76UdX73BnvpNikvbi3xyvd7LZ8ZA4= 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=IN5JDXm0; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=WTtUOjSQ; 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="IN5JDXm0"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="WTtUOjSQ" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 66KDrP4e2880148 for ; Mon, 20 Jul 2026 14:00:54 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=qcppdkim1; bh=fEZu2O1SGmwVg7wnNzlMQJn6 s9vJAsCWIlk1lovELsc=; b=IN5JDXm0gn7aUWNX+Ve+odkyQbafQdowEygyYYOn pxzrMbHownBEMfkaIDEO39iHHRtMmbHj1dnxja59lCNK7PsL5UzHgURD68ePvsP8 uev/ZklUqUwPTqY715T9kjB9HRdA9hmk32Z3FCAfjDSzBd7KlCTq/21WwXoc1puV UWigTwtBZ/bQ9rLXVQuH6LCuANLtG9dEHFHct1ayl/MPAO0O9xAlYDo/f7MQYJ15 +fQAqaE9YkuNeTaoQUSiEf9UEmDl2hwoWYy3uVyIl7woQvmBht7aGs0nAu6WsOId 9hhMJ0XSVxJMoDoNC+hDhpk567sQwmXGjf3d+u2Bb0vr8Q== Received: from mail-oa1-f72.google.com (mail-oa1-f72.google.com [209.85.160.72]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4fhf0ksrp1-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 20 Jul 2026 14:00:49 +0000 (GMT) Received: by mail-oa1-f72.google.com with SMTP id 586e51a60fabf-4488f192768so11412142fac.0 for ; Mon, 20 Jul 2026 07:00:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1784556049; x=1785160849; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=fEZu2O1SGmwVg7wnNzlMQJn6s9vJAsCWIlk1lovELsc=; b=WTtUOjSQ6xxjKlQuFKqIMzoRT7DOybEV7siMTZ+M1DyV07mNE0yTL+4LwvUOZuGj3b 7SIFjr6Kr5WP4Z7h8hJL/0uls5+VeYMAt5X48nB7cgyoSeJRlhrrHxC8b/xZmm4pYKYh Jta5KmyA5BmOgCQ1hH/B4/27UM9YZqun/I/QXWAyoe21r3LI2SymeWeT+ua6x7Zif28y ZxS23n7ZiAuRlZBNSk3beYaN6U7pLXQaXEPwB6X/ctpZdsylZPNsPjI3SGvZ/yLEOH0y UAtlB1k7yQmKUbWg/n7rZiP7wtO4bfMoaUfza1aLadL8zpwxBh7CLIxtZKZvxyUmtG2I 5NuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784556049; x=1785160849; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=fEZu2O1SGmwVg7wnNzlMQJn6s9vJAsCWIlk1lovELsc=; b=GmIclkO5SkOzYxDP5K0zyPADbVICpRx1dLKyU1PCoRIcLBrNkyyzBvMg6GSH/dZhPs xWBpE0xY6lfA1tJYwOmUOwg2vJX0cSg/lVpzrzTakh069n5RGiThOmiPHF7PujrUY60J S5ro+KBd1KCHFs2ZpQ8TO3ifyljBnK2aBuBcjR5qmrX8ewTLRHPrMEiI2oN+0eHYWd1o wef1tdQlk5NONLLadeV4A7npJr7tKjiPZw/FEnXGF3nOe6vKT36zV09ztf/2U4MCdJoY Z6l6pXk16aX0wDeWMs/70NHSAzfiDKZnKfckSA4Bc74xC2WMU0CQSkebfmzE5AHZs8rI YL9w== X-Forwarded-Encrypted: i=1; AHgh+RrfjHekP0D1c64b7UVIZHw2VHsqXa62P/mcngr52+TGYxDSfET3nSv1qMgncNJchZFl9tIZxRDyTJNx@vger.kernel.org X-Gm-Message-State: AOJu0Yw0/R/s5V2dHmUV6XrtpVvSqQqz4JL1EHX1/YLAzW6X+fW7RKma aNy1pZu8WxXmk6sNBRA/9m88AaFfRoHEoYP7XBEa5aV71nu21zNM1KCuzuJCY1goec96SmxFrqO l7ta6ssFnvjcnoJsQRPr5EwvhRGOfcL7ivfPJNH/0iKgU28ROX/n9RjyK41ETuEKp X-Gm-Gg: AR+sD10O3U44+g9RYMrhsZwVvMhrEYtbqoFJs0pWicnpn0nkMwV5HCblnQFH3bM1U9B /yiV/FfCQspZbTyCP8xxTAprgSTm/uP2CH7gaTlinzDSADrZNBexJTQEzJx6qOHBHAZwn4AY4YQ 00hBaKRvNyIbuT1FhI97JojLqZIZRBIWuCIRNuNdAwcCevw+IbVz0h+WHfzCTSbOjeFIYSXXggt XgTggBGTbvRfSWjOpdSYQ1IJcegV/R8/9697cGWyU63Japyi7sMCZlDcqxYJRUYvaCbq2g1JZ8T ZQEhh5JnXIOiiReVHDfUBfxXQPX2R44iomkoH1YvylgYUlVYLA4phE9kUJ7EdQedcfw5vHOMTdH xdQNecPITG1Os6+JjOjoJM3pttBLWKACZK/c0+kGw/fQ= X-Received: by 2002:a05:687c:235b:10b0:456:b3d9:336d with SMTP id 586e51a60fabf-456b3d9398dmr3529615fac.20.1784556048204; Mon, 20 Jul 2026 07:00:48 -0700 (PDT) X-Received: by 2002:a05:687c:235b:10b0:456:b3d9:336d with SMTP id 586e51a60fabf-456b3d9398dmr3529568fac.20.1784556047507; Mon, 20 Jul 2026 07:00:47 -0700 (PDT) Received: from QCOM-aGQu4IUr3Y (i-global052.qualcomm.com. [199.106.103.52]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-4568e6a92f5sm8537588fac.15.2026.07.20.07.00.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Jul 2026 07:00:46 -0700 (PDT) Date: Mon, 20 Jul 2026 22:00:39 +0800 From: Shawn Guo To: Konrad Dybcio Cc: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bartosz Golaszewski , Deepti Jaggi , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 5/6] arm64: dts: qcom: Add device tree for Nord Ride board Message-ID: References: <20260716142605.2398433-1-shengchao.guo@oss.qualcomm.com> <20260716142605.2398433-6-shengchao.guo@oss.qualcomm.com> <90769e77-c311-4a4f-be37-09065e217f55@oss.qualcomm.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Proofpoint-ORIG-GUID: kAiviZ3l8aFxsMGwrKsw80Ul_RGNWhKn X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIwMDE1NSBTYWx0ZWRfX77ZY6rjp4nyg bnKgLfdJJ/fnYMxiGIayXlg9kiLTOitguShoVZAD3BDNTXwUFIWk5raltrpR5A2WDU8OQlvRi3d eloInhcy2uCDngz71Ekb8JrS2NRuuTQ= X-Authority-Analysis: v=2.4 cv=G58s1dk5 c=1 sm=1 tr=0 ts=6a5e2a11 cx=c_pps a=Z3eh007fzM5o9awBa1HkYQ==:117 a=b9+bayejhc3NMeqCNyeLQQ==:17 a=kj9zAlcOel0A:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=EUspDBNiAAAA:8 a=gi19r5wPGwIhDG2GCIMA:9 a=CjuIK1q_8ugA:10 a=eBU8X_Hb5SQ8N-bgNfv4:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIwMDE1NSBTYWx0ZWRfX4mjM5Dcx25K8 tm6zuQqsA9RMv3/6f7VM4OIdeZEBZaWto0/ZXlRQFTpw7eAquT0/Nq/gGa/vXboPX0p1l9YRI02 KKG5vM88GJneqPWhONTENHxqpUES1srunAbJ0giHBZZhHy6dINll+FGK4qkpv6LK4mw14D05uT1 PGywGtswwnclIEYRv+1hJrpvhyDruW6JFMOQ0zCOrgMphYviKT1KRol5PvYsW/SEn1R6kPlPiOe ELrNoDAvuZkRHQyDHf2/c3LYCkIY8OEdyVkaULtTAlVmhbpMux8ZDh90m30F7vhLjxGVORjL49Q xuX9L42T6TfJk9vgtOwXb2G80JouvyJPVsNZMDrtJObw71RGkros943NYP4gTHJdpE5vHxbENtc O9PXPH29OiLBz281QetMpQPo0okgWg== X-Proofpoint-GUID: kAiviZ3l8aFxsMGwrKsw80Ul_RGNWhKn X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-20_03,2026-07-20_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 malwarescore=0 adultscore=0 phishscore=0 bulkscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607200155 On Mon, Jul 20, 2026 at 10:40:09AM +0200, Konrad Dybcio wrote: > On 7/20/26 6:20 AM, Shawn Guo wrote: > > On Thu, Jul 16, 2026 at 07:14:56PM +0200, Konrad Dybcio wrote: > >> On 7/16/26 4:26 PM, Shawn Guo wrote: > >>> From: Deepti Jaggi > >>> > >>> Add initial device tree for the Qualcomm SA8797P Ride reference board, > >>> which is built on Nord GearVM variant. > > [...] > > >>> +&scmi15 { > >>> + status = "okay"; > >>> +}; > >>> + > >>> +&scmi23 { > >>> + status = "okay"; > >>> +}; > >> > >> Why only these ones? Can all of the SCMI servers be enabled? > > > > These are the ones that have actual/enabled client/consumer devices, > > e.g. scmi3 for ufs, scmi11 for uart, scmi23 for thermal sensors. > > We normally refrain from enabling resources in the DT only because the > OS (really just Linux) doesn't have the necessary support to cope with > the ""complete"" system description. In this case, there's a firmware > layer drives everything and handles on/off requests gracefully > (hopefully). > > > We can enable all the SCMI servers, but I'm afraid that cause kernel > > to map shared memory and issue SMC calls to discover protocols (like > > power domains, DVFS, resets) that have no consumers, which might waste > > a small amount of memory and boot time. > > Please give it a shot and see if there's any immediate > problems. Sorry! I have to take "We can enable all the SCMI servers" back. I just tested. It seems that NHLOS ABL doesn't like the idea, and it fails/refuses to boot Linux Kernel when we enable all SCMI instances in DT. I can try to figure out the cause by working with Auto/firmware team internally, but that likely takes some time. Can we address this later as a separate topic, so that the whole series doesn't get blocked for v7.3 merge window? Shawn