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 B3DE642B310 for ; Fri, 10 Jul 2026 11:58:12 +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=1783684695; cv=none; b=oL6OXzgOBZuXElmEBX0XkyeW49bcfSnrEOEVLSiXq47J0sDtWQT5EbOwRJ2MXkvOn51crmwbAWIuJWupOSLhkxryxHg+PSNdYy/vmxK3yhvhu1v6oCmHM16lvbW21Z9/fTFNJaKwEbKpZqOBEu3LRmDn81AukGYlKKO2lk+6TVM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783684695; c=relaxed/simple; bh=VkcTWxOAtWwnKxhTtrukL1zBH5f748SBMo4QHBtBX98=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=S1fGCgvUt+T2YRJAqkcpcMfvGh5eSCsPnsDv9bEOOZleDo9UbpC8h00/Ug5R3qzU3nkqVdYCyF2tQwh9FAe/3gr6gOfNmVSUlL35eDBv3aoLuiKUsyxyo+NFvFLNpgM8o+hQVuK0cs0OeyHNIPC7fJcSaGHWYS8fRrIAplLSzqM= 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=BPo48QFM; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=Fb7YVxra; 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="BPo48QFM"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="Fb7YVxra" Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 66AAmbGr486512 for ; Fri, 10 Jul 2026 11:58:11 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= VkcTWxOAtWwnKxhTtrukL1zBH5f748SBMo4QHBtBX98=; b=BPo48QFMZtCWxEAe 1X6yGesA6w9PKpuTL0A8pXSddiV7D1yXPZ72Tp9DcyyhZ9GNG9Z6TN2/cC+4WWBm Fgri4sJpV5EHQt7mWtUiP09O2PdMOAYgq6fvdmO6XiQHNhKED1kKNveArvhRyp9C lGy3YaUI2cxQIrlcz8rCUHGBuJlKTwOL2oNzDcy3VKq6ko6KFJNyAyLhF3jWhVrm ZjDXEFCJZIeOZShFM8gQJhDFHNTAIah5NvTjw+S20o8cu+n81XYE7/XTpGnYt2H7 iScaKhjh9rm7SL/bTzms1FE76H5XT4hf/kf8QktIXPHO6TiKikJ1XMLa9cnWxnvf n3Z84g== Received: from mail-pg1-f200.google.com (mail-pg1-f200.google.com [209.85.215.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4fajwtavhf-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Fri, 10 Jul 2026 11:58:11 +0000 (GMT) Received: by mail-pg1-f200.google.com with SMTP id 41be03b00d2f7-c88d7a75507so1321389a12.1 for ; Fri, 10 Jul 2026 04:58:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1783684691; x=1784289491; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:content-language :references:cc:to:from:subject:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to:content-type; bh=VkcTWxOAtWwnKxhTtrukL1zBH5f748SBMo4QHBtBX98=; b=Fb7YVxra8FWmwSwwO7Qq4KJ8nfbUBuTkFISa82uNjSpnJjPoAXYvJRlM/6iw3kPCq5 QmsMmx7CnSfXIHER7aBSRel5BgXx6pn4R/ZiW99lyWgx15A/41Ndh/ZwL45+LWKs6mTC hT4oW0eOPhgM+wG6GlzAha5Z3EvLdPvJ/sglZ8OKcI5I5ZDSjw63iwnkM0VgC3M3tkQJ QiLc6fVpQ7jOcrsY8UzmoSBSmQAiGhhJas0wMnrC1aqNFbRJOPA2eP2YwZTiiqjnCaNX T8WPhe3rN//ykvpDX77FrUVGpWbX4fHJjHdcJ6OHOhOzv4+VEQzmq3iAzJcSa8Mb4Oj/ A9Mg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783684691; x=1784289491; h=content-transfer-encoding:content-type:in-reply-to:content-language :references:cc:to:from:subject:user-agent:mime-version:date :message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=VkcTWxOAtWwnKxhTtrukL1zBH5f748SBMo4QHBtBX98=; b=Wh2x+dIveZQ4w36dGSyclOjO8syc4qY42ZOnX3jtNW3z4+NaUVJUEMpO1t2WSRLFgk ZmxhFGw4YhPz1jk+7HhCbQHWvaFOa3aPPAN7KwjsmmAvrhH6xOvWrYkZXGjp9aIPMy/v 894PSH0sOZ2KbYTlS7I9H/BgDS4bPpxj4ZH6AF9tDt2hOSnSueAfuwm7iPIHqXWt1Xfy 1hj9Ek2MYoCECve54BQ/iW5TtuAspDs8nA2L9vz1m9B/hAhUvnHXpDZH8z2l/XaZr1BJ sVkBGqLRFfnQyVg3ZwGq0j50x9efkIzsi2KnaDirFUg2xS5pBOBakLatJPHEakozM+y4 OSMQ== X-Forwarded-Encrypted: i=1; AHgh+RrzYwex/qiOTbiu0++gDlRqScwOvJTP8XhdGeok9U6Y5UGT9tjRxGVdYblQ3TRv9wlzfRlFJ7HyS1+Q/OU=@vger.kernel.org X-Gm-Message-State: AOJu0YzelmqmuBRXbFYzi4imIO8XBnqD/gfUIaldmyl924ZgmqkEBjjq cENNSWZaJRwRQknTSpvJL32FA5LBks1ybCPpNFmW1oNcLb/QnjlvCvymbSSJGADIW6Ke2e++McH 2Ag0SiV2ZeSfXh7I+D5g6oGJjSxQOYsGrN0VY95SkuF8KTYq8zyJNt83YojFXBd4tas4= X-Gm-Gg: AfdE7cmF8xpotglp6wwL/dypCFMaNJhvC9efAMxSizTlfRwH3EN906q0QnJ74j+P3vb Hl2yW5dwsAowo2dIciKnwp7LQUYwYpwjvWEsFugOv3C5AUYw6ZW3IbMJ6zUh8MAVLkC9pQDZoqI 2jdw4Ub08nLFD+I8aMa1Y9s7vrzkjIxwT3flqHHdIh4j9z5U0fsXttJNbREpGmFfLS4njDsX9If LPkVdwFeMI+FXvxyzQaunbzRLXISsPq0UCPOD7ZfLKZEWPMmvH4X8QdKOa3G2pAb0Rx+3Y7Iqqr gWwYBtJ738TknWjRrR32jJgU9fgnamKGTG+H7qtM1VvxJ/j31a7RZNTZM2Z3KjaoDtDkNEthPaR XDOMetcbwlBK4pMeAWyb/K3Od5VmZN3TEg0LKzvrM X-Received: by 2002:a05:6a21:6e8f:b0:3b4:931c:3c7c with SMTP id adf61e73a8af0-3c0bcea2f17mr13367387637.44.1783684690624; Fri, 10 Jul 2026 04:58:10 -0700 (PDT) X-Received: by 2002:a05:6a21:6e8f:b0:3b4:931c:3c7c with SMTP id adf61e73a8af0-3c0bcea2f17mr13367356637.44.1783684690107; Fri, 10 Jul 2026 04:58:10 -0700 (PDT) Received: from [10.206.100.243] ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-31174839f89sm40949164eec.10.2026.07.10.04.58.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Jul 2026 04:58:09 -0700 (PDT) Message-ID: <6f8d8cf5-1e35-4d45-b2c1-6f36ac51ad4a@oss.qualcomm.com> Date: Fri, 10 Jul 2026 17:28:04 +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 v2 2/4] arm64: dts: qcom: shikra-cqm-evk: Enable display and add ili7807s panel From: Arpit Saini To: Konrad Dybcio , Nabige Aala , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260706-shikra-dt-changes-v2-0-56fcd1659ea4@oss.qualcomm.com> <20260706-shikra-dt-changes-v2-2-56fcd1659ea4@oss.qualcomm.com> <8a3cc857-0b1c-4bd5-a5ce-a564823ca614@oss.qualcomm.com> Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=XOYAjwhE c=1 sm=1 tr=0 ts=6a50de53 cx=c_pps a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=FW7Uz84xZHR0K0vXMAYA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=3WC7DwWrALyhR5TkjVHa:22 X-Proofpoint-GUID: s8IOTHCJGvkkGnXyDmVwTsMuHlNSULto X-Proofpoint-Spam-Info: AW1haW4tMjYwNzEwMDExOSBTYWx0ZWRfX81/Ojq8E0NU0 cf5EFNQPAsirKg3UWj+xDIQksBpNtReol5dg02I6+pNvJCBTEH4O957omw/rOPduGGRPpE1D0so 8I3MQjgWCom5gBmHzighFec3GCkaMkw= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzEwMDExOSBTYWx0ZWRfXzBnEIUQd21ee GGIq2DjDY++DUNfu8wL5K8yb9uGfVAXT3hHe5hZVl9JV3fbW7PzJ2QoKCa4zieWUETNOX/2gejw cneUrcc0MfM1Nx4CuzCzZIIvg9vB37SrDG+zpPtAsnFMPCoCGFL3bS06SAKrFq0SM1VUQ/Jolrb yXZ28IRgwykGjiEhmjFxUMpyOf4URCbUnW7PIE+Zs5GTGdF48ViapOpP9dGUPR6KIcGB4NK1tCt MVFZbM1sEqf/zEvzoRv4K0kvjgOPgDNhyzqhCZXEM7EGwnCOhqHxHnQYvuX15FXEsLjrl5g7zxL 6l4k4TxitZoRindRF9D+PR8/XCxav8H4jo3phIoPQxPZCP2cpmtYBtT2D9ilHR5vL2qB32VOl4h 71CjffkCX0EtWwULAq+gcMOmC3qaYW1GSRvt5JBYlLzcuFu0JgLXiK9SuNn0KUKsN9byWa0EZw5 QZBNDXuZQjj5zRHSj/g== X-Proofpoint-ORIG-GUID: s8IOTHCJGvkkGnXyDmVwTsMuHlNSULto 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=2026-07-10_03,2026-07-09_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 adultscore=0 bulkscore=0 spamscore=0 priorityscore=1501 clxscore=1015 phishscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607100119 Hi Konrad, On 7/10/2026 2:31 PM, Arpit Saini wrote: > Hi Konrad, > > On 7/6/2026 3:33 PM, Konrad Dybcio wrote: >> On 7/6/26 8:04 AM, Nabige Aala wrote: >>> From: Arpit Saini >>> >>> Enable the Qualcomm Shikra MDSS display subsystem on the Shikra CQM EVK >>> board and add the DLC0697 MIPI DSI display panel node. Pin pm4125_l5 >>> to 1.232V with regulator-allow-set-load for DSI PHY PLL stability. >>> >>> Signed-off-by: Arpit Saini >>> Signed-off-by: Nabige Aala >>> --- >> [...] >> >>> +    panel_bl_en: panel-bl-en-state { >>> +        pins = "gpio91"; >>> +        function = "gpio"; >>> +        drive-strength = <2>; >>> +        bias-disable; >>> +        output-high; >>> +    }; >>> + >>> +    panel_bl_en_suspend: panel-bl-en-suspend-state { >>> +        pins = "gpio91"; >>> +        function = "gpio"; >>> +        drive-strength = <2>; >>> +        bias-pull-down; >>> +        output-low; >>> +    }; >> output-foo isn't necessary, the panel driver will assert it as >> necessary >> >> Konrad > > Ack, thanks for pointing out. > > Arpit > I just checked, Normally the backlight EN pin is controlled by a backlight driver. However, this panel uses MIPI DCS based backlight control with no separate backlight driver. Since there is no driver to assert gpio91, we control it via the panel's pinctrl default state.. So this is platform specific pin , we need this to enable/disable the backlight. Thanks, Arpit