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 118A2385D7C for ; Wed, 19 Aug 2026 03:23:14 +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=1787109796; cv=none; b=qiFYHUs2zJ2y1FngxS4+eWeOl4qv0Re9E/2aWvfevx22Y4v8pWzph8PIuLc3eNtGnrEkQ9q3gB8cqZvYp8s7xWO959Ucvjgp1SBe/CMKMMPglWQS/xmzLUcGvGyNBJnhH3NYdbBQsSazQ1jc9+aW/NGdJF+aHom8glieUFA9cFU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787109796; c=relaxed/simple; bh=SN+u7OIhD8Lp/eXjOqk8WKjEXVeZap6QxajEEaEm7oQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=q8MGFffNTBO3Uvih6ah96FL96J2ZbrwxJKq2LcAKKzo/t6MDEebSNNOEZlRv0BwGqf3ttfgCM0QTSAvuIaAxnk5/30xbzi/uoA9ARSHrbxn4ESIPqBiqRRqsLGlxWvPXNi7+sO8TZq5Eu6FyfPv6B1zlTm907lZ1ymUCd7eltnE= 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=gIj+EX7D; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=cMduPMPf; 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="gIj+EX7D"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="cMduPMPf" 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 67J2lLxv2669647 for ; Wed, 19 Aug 2026 03:23:14 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= WtUkidXAHsAtf2q683tbZrQMA8Y4N68xpw5aqwFTrYc=; b=gIj+EX7DG2A9G+Cm bYLzeJziUIJxdojXGIz5LBWIByO+8fnEhfMBkF/dxk3oil/upPUO8JRCoIkWflLe lZZK1lUhQ36toIeCDGNjc8Rj9wx9Qs7+1mA1qs4PEa1aIwot2kekC1ohyBFp0O15 yAEayAqvYvjMZrAHzjkan9bOQX+rIL9yblsP0ZUO0h+hjig+T9VdtTNK0/b0Yy/t mVtGESKYtHQ5Fey3Na24iwX0ywkFo6rVrUOVTic53Tg+S6gQ8r4TrwusnepceVjV 2XRdrYjD5Ao82Nv0pVk2DJNg60HDDVW6EO0GudjpXx1iFNu+4gco/vIxpnO0C3Zz 3bclWA== Received: from mail-pf1-f198.google.com (mail-pf1-f198.google.com [209.85.210.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4g4yfkh3rm-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Wed, 19 Aug 2026 03:23:14 +0000 (GMT) Received: by mail-pf1-f198.google.com with SMTP id d2e1a72fcca58-848474825ffso600577b3a.0 for ; Tue, 18 Aug 2026 20:23:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1787109793; x=1787714593; darn=vger.kernel.org; h=content-transfer-encoding:content-type: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 :content-type; bh=WtUkidXAHsAtf2q683tbZrQMA8Y4N68xpw5aqwFTrYc=; b=cMduPMPfpMb6f4nPVD53fO8G3fBixyJWkQcbTHaLLTM3Lc8Rn++qzDTxjPw4a2vtxj xWm8dKVzd0N4w1VfOTbpjPkEjiCT5Pn2Fqj/M+rsUsTuZJKw8R42cnq6y2jYb61idthA +jlO2FfepOeTZOxWifcvpGNmGceAthX7GscCTTli+CRpfrw6vTFvHOAHkCvFS7kG/9yP PQ80qfc63ArtW8vVpJTwpFdkggXi7EjFmaD6ZUbNdseyJ3TlLT3DjLQyC3pr33JxiqqE lMuJaDcS5QGRxkHZLla3ulrerdDYVni1K6dF3V+7YETOnmxbemELyk7CtKc9yo8zeoeO /R3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787109793; x=1787714593; h=content-transfer-encoding:content-type: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:content-type; bh=WtUkidXAHsAtf2q683tbZrQMA8Y4N68xpw5aqwFTrYc=; b=kbQ0IZCjP30sCUGZAwWcNOhNchM3BMmegXkg8A8H+XDY3P+CPNskoULGIcujzoGday eVR64DdYRq0oD1+51BnmuoxUn0hjPn0Io1B484O0ZjvY+1SkmmJKXNA2UV5AcmtQZjBa ylV1n6uP86Q8K+4eGnCI+9T3kGsmCjYO5GjWBIU72LrkOmXPoIFQz07Ly6Td0elDkCoZ bgeJl+jLFUu6sVvwRSeyawsMo8IUyP6Oe8fDD0p2lqwhqbLLoL6LRdrIcEYAL7kxwAZL aERzIymHRcm22WfWx1GUcE8P+DIF45GBlWOBsrWICzgvm0Pfeoz7xQRYVq6fM8ddClPl pFEg== X-Forwarded-Encrypted: i=1; AHgh+Rrem8DK1deaf1CyiyyjpEpSqvkYH2PpBWtK1my2J23Jg4GGhV52tRsRd6HyN8XD83NALNZ3nB1nDZ//jyg=@vger.kernel.org X-Gm-Message-State: AOJu0Yz1MAeKPWGZobV7ViSflPOnU98Q7AOXS1Gwp5RDSCKhu01QY2cD 9OSNwojbD3GWzBwpFVhFKhxm3EyIDW+mMmf8wMTnV9O/hL6cGnxOVdCZ7AlxiDwqLkfVMh+3ir1 Atw3uwTQ5JxDSwLLYK9Kvz/51cyLA5EMCZTZEtbICbb2akn8BSWKrHygeNoEY5jXM/3Q= X-Gm-Gg: AR+sD13J7HZPdfh36kbUAmNu4kMBw91U5MLOZKfnCucxHXeisTaH70Dmfy/sfJQquhC ws6Dh5cn21sbHF/b+Dn29CCiyWHka0AA0gU8kMu4auRWineiat1Zpv+96FCdyvCFhZ3BaoX13hw Jxa2Peek4dOlymbOYxh1KlZMjVNWs9G55rcBE/cRm5fxATs4K/xtJbzVfCbP3jIqs84+wolZZiI PS0NJyc/gns1jTQ+p3Uv47BgFe4iJldGXAwJY04Wy6Rd7JhQ/KajH8wCkI8fzI5YL0MTeFMYxu3 6/Ma9ARhYHhex2dEKymgKQdfAhzgnzBN/7qt/SjORiCXztg0zR2uhgVwjUPDFMBgUfCwGUqEYef g8SqE7s8nQvE4qqGzY+r2v+hPPlc= X-Received: by 2002:a05:6a00:1890:b0:845:3033:6cbb with SMTP id d2e1a72fcca58-851d18a2cb4mr1785941b3a.11.1787109793546; Tue, 18 Aug 2026 20:23:13 -0700 (PDT) X-Received: by 2002:a05:6a00:1890:b0:845:3033:6cbb with SMTP id d2e1a72fcca58-851d18a2cb4mr1785911b3a.11.1787109793141; Tue, 18 Aug 2026 20:23:13 -0700 (PDT) Received: from [10.64.69.173] ([114.94.8.21]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-851d3392a96sm124241b3a.20.2026.08.18.20.23.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 18 Aug 2026 20:23:12 -0700 (PDT) Message-ID: Date: Wed, 19 Aug 2026 11:23:02 +0800 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 1/3] dt-bindings: display: msm: Allow two MDSS power domains To: Konrad Dybcio , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krishna Manikandan , Abel Vesa , Yuanjie Yang , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260720-msm_gdsc2-v1-0-4687866d6cb0@oss.qualcomm.com> <20260720-msm_gdsc2-v1-1-4687866d6cb0@oss.qualcomm.com> <5341e732-0deb-4d00-9a7c-595e317bf1e8@oss.qualcomm.com> Content-Language: en-US From: Yongxing Mou In-Reply-To: <5341e732-0deb-4d00-9a7c-595e317bf1e8@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=NoPhtcdJ c=1 sm=1 tr=0 ts=6a8521a2 cx=c_pps a=m5Vt/hrsBiPMCU0y4gIsQw==:117 a=Uz3yg00KUFJ2y2WijEJ4bw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=7SNk80zgYqIXXrXIq28A:9 a=QEXdDO2ut3YA:10 a=IoOABgeZipijB_acs4fv:22 X-Proofpoint-ORIG-GUID: ABLsN6JdQ0-MYnSWd2DNIGknmqQOraKb X-Proofpoint-Spam-Info: AW1haW4tMjYwODE5MDAyMiBTYWx0ZWRfX6/n1lnTCDM4b KTul9dFT4JNVpJb06GMYZkAyLfTf+tB8+/aupZKzoLkXW/ORQrIbQcEmTNsG9MOUtOF/o/0dLzs aOlQkJvWFucsrCHA4aQDkFY5QFNwU2Q= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE5MDAyMiBTYWx0ZWRfX2pdgV7pf9Ly5 0yJJrhmlZ6BpIU51gIP2cUyZ/HXkz+WsgAyLv9nG+ytVmKQVFNGMttZCUDR+V0WaP6w32q3blpj gqeblI2ZIHiEjQET+/rKR0LtYwTenlr2+Rr9ZysEqdHGiw0xGJpkYNzE0xPz45KKKU13btWc8g2 fwHQDAxaOl3MuAXKCJRSGBtaEEkxCgpoITv6dAEOPqrlidDijtLLuLa/V2l1GZxfIAzNlj2X9Qu QvsnIsulOubwH87W0RcFCAMIv9fniJE/STkMBDdqWWHAYmvurcQxgi7XXnTr9gbCpltBW/IA57K 1vJ40lV+qA1DIlLc5W32U8oujSnJt31FHoDbd49XHByXqodwu/9zJqcEN1JZEkpJhIxybXt1kH+ rdM1lowwP3SlcPqq+pr4X/JnSeZebsKWnBa8Z2D2X99yELMlzAJgUMjJnGow1gA3CvpOyErFQIO zDsM483dV646yysEQkg== X-Proofpoint-GUID: ABLsN6JdQ0-MYnSWd2DNIGknmqQOraKb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-19_01,2026-08-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1015 adultscore=0 priorityscore=1501 phishscore=0 spamscore=0 malwarescore=0 lowpriorityscore=0 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608190022 On 8/17/2026 10:13 PM, Konrad Dybcio wrote: > On 8/13/26 9:44 AM, Yongxing Mou wrote: >> >> >> On 7/20/2026 4:49 PM, Konrad Dybcio wrote: >>> On 7/20/26 10:43 AM, Yongxing Mou wrote: >>>> Kaanapali (SM8750) and Glymur use two display power domains. >>>> CORE_GDSC powers the main display hardware while INT2_GDSC >>>> powers a subset of SSPP blocks. >>> >>> Can they operate independently? Does INT2_GDSC need to be >>> powered on after CORE_GDSC? >>> >> On Kaanapali, my understanding is that CORE_GDSC and INT2_GDSC should generally track the same state, except that INT2_GDSC may be powered down when SSPP1 (VIG2/VIG3/DMA5) is unused. > > Is the MDSS any useful if *only* INT2_GDSC is enabled? Can the INT2_GDSC > be enabled itself if CORE_GDSC is off? > > Konrad I No, INT2_GDSC can not be enabled when CORE_GDSC is off.