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 DB5B834E760 for ; Mon, 12 Jan 2026 10:54:43 +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=1768215289; cv=none; b=JW4J92J/evfOyLuxASqsM5vu17LTeVQItev7nv5UMCH3RiroHYDiAb+zupOy0KFg3KLjcg84ERuHLFmXh6L+AldE16oC9JIoEvFJQYCbuPHwgJA+abop6lCjT1rUo5vKAr1kQEMssPQpQdGYenO1UIwSyWponyJpEfnu7QktwzM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768215289; c=relaxed/simple; bh=COopUAGXSaAoAyrLxSL8ntUC1NukjUyR2WkmMrC8pYo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Z/yo5JB4cNSNenxTn0WxrU2YnyiRq8Aj3O28bO4PqTVgwN9PW+aRrO7t8GDqdlwo0gnVWl+085gPgMbS/4CmOWlZkAS944GuHfBr1mF6AZpaf5Od2LeEyf1NS9mVof0OIp996CWwW8i7QcqJRPADD92R4PQw9MxxbO5J5Fysbow= 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=LbY5DNcG; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=ikfoYiMz; 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="LbY5DNcG"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="ikfoYiMz" 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 60C8FpTW263654 for ; Mon, 12 Jan 2026 10:54:41 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= b0uprtgifMy5b5m2H1PUKfX93suAbMgiy/DGdB68Qp4=; b=LbY5DNcG119BEMlF N0zl0yr//NX/Th1GZ9FgzqtBsn4Z3/qvDKdNH3xSrYo3rGoqmrodpe3vNArOVhzx uUR1533tKHHXjSRhQQ/UHH7V4neorzpIwqen0lYzxlS5zFoDap9rBIZRPiUr04GD LD/B7VFgNYJ18MF8YWWAXP4VdHl4U/L3ufKqGcBG4tXL2CObGYf6q8w8BPkh5HnW aLwEyIrtoQ38SXpmhjSvrO7N4X263vrkwggjcMhot/v1rrQHJSa3TEyZnpCIvPnQ fQiL9q9NAw0jwMIt88d/4dFfZ/4iRz/vkNDuEEprgI0h5PoofIzgZPN0iEvvoM3Z jDUH0Q== Received: from mail-qv1-f70.google.com (mail-qv1-f70.google.com [209.85.219.70]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4bm8kytpdh-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 12 Jan 2026 10:54:41 +0000 (GMT) Received: by mail-qv1-f70.google.com with SMTP id 6a1803df08f44-890587202c0so12791636d6.3 for ; Mon, 12 Jan 2026 02:54:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1768215281; x=1768820081; 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=b0uprtgifMy5b5m2H1PUKfX93suAbMgiy/DGdB68Qp4=; b=ikfoYiMzOrWdZE/K+Tpa5NUmVebIo16PTKz4TrHfcYKB1I0rGXrjk0Jsmf4w2OuBP5 iQGtQ6UTY5ifccvFQaw7UFLi4pl8tkb1XZItsIhIsIyYID4lHCoxiWWqZ1+Gk0kRnJ/3 XgMhL4P+41D28OYiFt9ZBsk8yM+7IfOGSCtMCf4Fb3EJ5XmYpS+yXajz6Mv1E0u+BR5H qN08s/ev4GpxVZEZA6T5WieY9vjligJI2HgwZgjTjtsEF/RvVYVEk1nwl329qdxZkV6t eI9rq0jSvP2xQxUpOw5IE199QPRj8jyvIxRw9DC/4TPmcVRBVMh1dVepPGcMe5EJIVS8 YG0g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768215281; x=1768820081; 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=b0uprtgifMy5b5m2H1PUKfX93suAbMgiy/DGdB68Qp4=; b=CIeSPbVhW8JejZ+waTLlyyruMYjBdMSQoeuzRMXV2Lf4pu+gQ3LTmDM60fUh7qGWJm yipaV2SNEN61+kvBKnl1PduK6rgmlxp0Oe20JgeKN19ilFjaa4poJXkgqChcDatG60vf eFeH32g8iWnJqzIAgj6Hr4JJoIeb2ahyAoV/kxaN9YyGjlxvtIA9Fx1q6BGOy6Sxb7m7 30KGHFetPUUgemlJoSaQAun8P157ZeLr9hqTsTZp/llUuWdvLDYQxphG8+XQ68HN3PDw N+cO6xAPXXap7IsLK0g3knsuzQaZPTWoA1oB8bowKUvZVwqxvscDAJAhlVr17p4ASnKS o9cQ== X-Forwarded-Encrypted: i=1; AJvYcCUCTBwHLBayFZFhEFV82EJm3dqnq3geAwdDQ71VkYB5RXgtRtPsZkMGlSJVHpi7FHrRmOGCSRQPB78Y5cc=@vger.kernel.org X-Gm-Message-State: AOJu0YwmdwAlc25OEIEYLSKr2A9WXckXWBuOlHMLUawQYnkwcDgPRKyF VsGVKzIWC9bF2Owkas34XrxG9+U79v6mDF4WClp2UjJa7xip34zllqMnjMffD2/1Zus6SbkwsKC 9A/sbp7qJjE7X74sw+Tys/xcnhMpwShCivU3CDHnBkKmMsiWa3zL7SkS4rTRuOR0Tk3Y= X-Gm-Gg: AY/fxX7SGJlkoMPtGmhrLH01fizkUmrBUeIoTpLozQKFFftB7eAcpDzxhhUilO00VVu 83ZQEmBFhlXNjt3oADO8K9fFt8kyP7U7p3ZlHLN/wYnw7PeHxF/8D7Utu8mrQ5hjSWmsyBFq7Qx OJ4qfcKDXVsgB2GxOTqkTFDewN8x5mn4tkeqJ8GPzpPJU3BLbfhDkPWXnz58cREkiTB+++y2XEc rSa42Qxl2gwEPQbUnZkyxTGVJd0yZK/WDOcuBoX0D9J0YcCD+I1MH9iTTN9imUuwN9f7BpiO5hw Qw+G4FzKQwuOYlp1qWwgr0hq9HwUaDqPJse5OOq7uIzOjyWSZ+47MOd5guzcSrvaIgPutwxpvnU PXpG15h37RgFSlUOnv0CInOfKWaFUnAZqSB0YAvRKrO/X4nf/G6qa/DJGRBWmFjAJQYc= X-Received: by 2002:a05:622a:8a:b0:4f1:840a:c90f with SMTP id d75a77b69052e-4ffb47e3b0dmr199932031cf.2.1768215280580; Mon, 12 Jan 2026 02:54:40 -0800 (PST) X-Google-Smtp-Source: AGHT+IG2FwZIO3oVO26TRUjgJxn7OhSt90ZEbczdbB9so0GVa+Ly2JZVTPkr2ynLZyLjkKS0Mnx6bg== X-Received: by 2002:a05:622a:8a:b0:4f1:840a:c90f with SMTP id d75a77b69052e-4ffb47e3b0dmr199931891cf.2.1768215280152; Mon, 12 Jan 2026 02:54:40 -0800 (PST) Received: from [192.168.119.254] (078088045245.garwolin.vectranet.pl. [78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6507bf6648fsm17277585a12.28.2026.01.12.02.54.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 12 Jan 2026 02:54:39 -0800 (PST) Message-ID: <36d3ead4-69c3-4bb5-b29f-25e9b7182618@oss.qualcomm.com> Date: Mon, 12 Jan 2026 11:54:37 +0100 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 v2 4/4] arm64: dts: qcom: Add base PURWA-IOT-EVK board To: Dmitry Baryshkov , Yijie Yang Cc: andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, krzysztof.kozlowski@oss.qualcomm.com References: <20260109-purwa-v2-0-f39ee10684cb@oss.qualcomm.com> <20260109080000.606603-4-yijie.yang@oss.qualcomm.com> <6e8e6583-033f-439e-bd92-b24fe432fb96@oss.qualcomm.com> <3959a318-aca3-43e2-a431-4a9ae40f911f@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: hshU1Os21WXIdJYywFpgGnSHxSCFmfyf X-Authority-Analysis: v=2.4 cv=ZuDg6t7G c=1 sm=1 tr=0 ts=6964d2f1 cx=c_pps a=oc9J++0uMp73DTRD5QyR2A==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=OTrRQFjmG71tW0adYG4A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=iYH6xdkBrDN1Jqds4HTS:22 X-Proofpoint-ORIG-GUID: hshU1Os21WXIdJYywFpgGnSHxSCFmfyf X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTEyMDA4NiBTYWx0ZWRfX5EPtrJk2ohTd JdovDaX+79iqtATUHdZZl/e3TgHSLTXHHyE7pdwPiKtZc9bzmDOYacgGy/BtUlFmWUHyELF8Cqf NlmnWwMZXbYRQn4ZiviJjylFwF4updsXm3qsHe0oh06kP5qDhTCt50Lp/T0U5MCRG9eQFu9Q6oI WTta1q0aYLJHqVLUq771YYVvs8h0f8CHawbJVdOfs3DCwz2dLSNwKW9MGBCvNnzLjRZT9oyi0jO 7LJ5MChmyEgdH9da5fhJXpcTBvgrnDIrtr5gTEtSmlRTC3+cOLUNntKIc6W4YFZquEH3urxY6GN wlclhT+Me7V5TMaUYbhVU1kVI1GeYMxTYf4jvQnH7NRxIm8jzxTGQZ7f+Y+GlPS+OrFk2Q6wXNT j5OS0rwIHzIa/Zvr5OdK07HJ/psONFGKOVqyOqZLqSO4cHigKgbvTQQ5RlwIz6DqokjMchElUUs 9LuJlKlMWtrJEqqfdDQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-12_03,2026-01-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 bulkscore=0 spamscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601120086 On 1/12/26 7:01 AM, Dmitry Baryshkov wrote: > On Mon, 12 Jan 2026 at 07:51, Yijie Yang wrote: >> >> >> >> On 1/12/2026 1:00 PM, Dmitry Baryshkov wrote: >>> On Mon, Jan 12, 2026 at 11:12:09AM +0800, Yijie Yang wrote: >>>> >>>> >>>> On 1/9/2026 7:29 PM, Konrad Dybcio wrote: >>>>> On 1/9/26 8:59 AM, YijieYang wrote: >>>>>> From: Yijie Yang >>>>>> >>>>>> The PURWA-IOT-EVK is an evaluation platform for IoT products, composed of >>>>>> the Purwa IoT SoM and a carrier board. Together, they form a complete >>>>>> embedded system capable of booting to UART. >>>>> >>>>> [...] >>>>> >>>>>> - backlight: backlight { >>>>>> - compatible = "pwm-backlight"; >>>>>> - pwms = <&pmk8550_pwm 0 5000000>; >>>>>> - enable-gpios = <&pmc8380_3_gpios 4 GPIO_ACTIVE_HIGH>; >>>>>> - power-supply = <&vreg_edp_bl>; >>>>>> - >>>>>> - pinctrl-0 = <&edp_bl_en>, <&edp_bl_pwm>; >>>>>> - pinctrl-names = "default"; >>>>>> - }; >>>>> >>>>> Is the backlight infra different on the Purwa IoT EVK? >>>> >>>> As you can see, this Purwa file was copied from the latest >>>> hamoa-iot-evk.dts. However, not all nodes have been verified on Purwa. >>>> Therefore, I need to retain only the functions that work correctly and keep >>>> them aligned with the nodes from my initial version. The deleted nodes will >>>> be updated later by the respective authors from different technical areas. >>> >>> Please, only delete nodes which are not present on the Purwa IoT EVK. >> >> This isn’t a deletion—it’s just not ready yet. Why do we need to include >> all the nodes like a mature Hamoa platform in the initial push? > > Purwa seems to be mature enough. What exactly can't be enabled at this moment? Right, I'm in the same camp. Since you already have the board at your disposal (because I trust you tested this patchset on hardware), why not spend the extra 5-10 minutes verifying that e.g. the display lights up and you can control its brightness? Konrad