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 5B43D43C7DF for ; Mon, 17 Aug 2026 14:14:25 +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=1786976066; cv=none; b=Ohe4OyOXJyyrEilTud/jGIz0i8ZDRbnjbACZTeu1V5NGZKbeCUKUmzShdgVwz0eGV0LJjMGxMnCPn+5riwia52Fzr3vKxF8n+SYJkTA8Ss3/Ll7u3arul8i/YLi3X57KvBGC9brLj+j3A3t4SXNTEVgPeNYepvEfh+yLrb9Hut0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786976066; c=relaxed/simple; bh=4/cvtqXHsCg2yJhBIIxzln1YJ73gIo2ViDJWMf8xh/4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=qvAKS7YEYuZd71UXRrk/WkUIoRfqOmn06ozXfL4ZQ3Vo3gsBk/J9rki1HqLQrjn9WKKQOEY1Vjn//jZup13rXKonZyJp5OAVbnrcyZICsEEPddvygVeUhA/amvFptX6jEeQ+mbhPHekYNm1BVRmYXdye7CuRdGsFUd105+fK55s= 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=HIDJDKcq; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=cm2D4sQY; 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="HIDJDKcq"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="cm2D4sQY" 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 67HD6C0j1193610 for ; Mon, 17 Aug 2026 14:14:24 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= 6KIqa8NWjnhrY+o22T90DyvLOoGWN8sNSAn3IPl7xuQ=; b=HIDJDKcq54Ui5H4z fdVChMBtd6v73U1FQRXbqKwqT9cKpv8s59dOSnvtbum/BZ+UPsmewdigrK2TigFo 6MnS5eMY4qXLbJATw/EWO1yPS2b6NHL+AVw5NFQalHPM4slYwIGtm/LngpL0iM4D JCgdPqJMBI0BFuvi9+N6CdtJ77UNDEndnNeZ20qbFoEmNQZToPKIvPNznKzhsdtu etGx9C0p7Mz4nFZHPkTp7mEvd5bowqYxMM8MfJufG0Tdr+hBQ35QXUBUHj1tR68K QdFjNM+mi0yHmXMFdY9RFhXIhYOuDpD6FAs6R6hWRhzrO6N3jONNrYAW1+8OQkfe gau7ug== Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4g3wke1n27-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 17 Aug 2026 14:14:24 +0000 (GMT) Received: by mail-qk1-f197.google.com with SMTP id af79cd13be357-930f80ae4f0so20627985a.2 for ; Mon, 17 Aug 2026 07:14:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1786976064; x=1787580864; 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=6KIqa8NWjnhrY+o22T90DyvLOoGWN8sNSAn3IPl7xuQ=; b=cm2D4sQY3tRqP6iAanF4vfoTVXSO3oW4PWLVjFEw9Fga+NXYpVPbueVGDc1Zptbqt/ p/7yR3jmEOd2QTpr6sjEkU13Gsk2J635E0Ynw1vR9EEo4PAyx4NMnBjk/GheY8pPiFsT A7M64Mb5R4kq8WgpUWrHJ+aLsz0l7BEnMYXt3pVldleWQeN9ngW8JRteZlY/HULmvMz3 cJtnWGh9uiPAXlZqBP95V5WQWU8vJn/E/QncuvOSdO/+cveiH2Or+u+WyBppjJ/Y5GNV vVIvqQ+DjrF/xp1aaNT9IyUrbxptAGI+qmu2E117doSG/OJcxMb8QrB5i06pwTUgLBCS Gxbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786976064; x=1787580864; 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=6KIqa8NWjnhrY+o22T90DyvLOoGWN8sNSAn3IPl7xuQ=; b=Wo/Q6dkp8BDTH3v6FvH1Z7Sb685u2qiS0bI8xkfWfm3htr37KtT6HlFjWTZ7kJx/Ag 0Thcz6hvpbpRMLb59y9dsdpA2oXZZIkceZiqRU5LQ9KnA/lj2eSml9C3ua8Fj8C8hLjJ me+pKH9XKeCB9r80ZY/M3iLPs02HzvfZyvvZiZ+ZQtSmsO0vFSdsXlP53axpKn8RxXRT /+cTqIbD4ybWzcowQQJdmJqJd/va8PPILOlSdK8J38R+AtlAEk+zsyBL/WRWfyJzsjrA 12OLUXBUIlHGcPN3bfltvnPIlP3ArYXeY5ZYZhFi3sGgk0c/ZNt1XQFeebLjaKmRHduJ AxYQ== X-Forwarded-Encrypted: i=1; AHgh+RpIKZauKDcu1KHCSxIIiEbDSFy3cTWyBrZ+PnH7Ma689KIQ6pr/uq4MknFlhzSOx+MLs9AQ8wuHdFaKHnU=@vger.kernel.org X-Gm-Message-State: AOJu0YwbYyx3RdhYiTO3VQomQK+OdQA7Ah6Piw+xF8gaM7qQ9aL1LJzH a5k2ZXDifb1ys+dvABYGdYlaltTNTRSpj8dp+e39KwWNiZaW7/wRCPMjY1AlFLViRcgsX44yBPO 7WxY0URCEjdnRd6cUa0t8f8kmPnCBeq87VUjG/fXkFB71ywzAgLzh/KJ+KN8VIHYcUnU= X-Gm-Gg: AR+sD11CMNKufHf1QYHO7otbYhQFtXA2cHlbMr8ktEtK5PgO/Xy+6YZlDZ6LzMWbwrc bbKYFrjbEicWn53rrIcKGY+ZljRCM89qW8ED8N8OHpOpizPfc+VqO2IzruqfQ6LQzx8q6Hb0P9F C2uBj017cp/R9O79IYoK/fftwa72c4dyfFvCVqFQ2Pgn9/S20EcQh5vBwareiWsSMkJQUq9L56P pI7z4l98o7YXvwPkUlE2yXVrqqU7RpsoJE3YwoktGLxnHXZ3ArO4mg8crPs9LLNLuCQymnLJyuy zgGM9NTEnaq94FyvuE+nsAxaMHtifn3nHi9tIoAODuRZMCaBjKdzmSTDoKiJsOxHsu8mRzSo2LE OI+qTfKSKZyX/d1sTd/21ceo4 X-Received: by 2002:a05:620a:6910:b0:936:2f59:dfe4 with SMTP id af79cd13be357-936d1edd4fdmr1907564785a.0.1786976063513; Mon, 17 Aug 2026 07:14:23 -0700 (PDT) X-Received: by 2002:a05:620a:6910:b0:936:2f59:dfe4 with SMTP id af79cd13be357-936d1edd4fdmr1907555485a.0.1786976062918; Mon, 17 Aug 2026 07:14:22 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6a3d852d915sm757705a12.9.2026.08.17.07.14.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 Aug 2026 07:14:21 -0700 (PDT) Message-ID: Date: Mon, 17 Aug 2026 16:14:17 +0200 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: Yongxing Mou , 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: Konrad Dybcio In-Reply-To: <5341e732-0deb-4d00-9a7c-595e317bf1e8@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE3MDEwOSBTYWx0ZWRfX7wCaX/DTpuaw 0wEGHvbrnhFE7PDS5jyPDUSG94rpKz578qmY2655fbZ0sA6+79fXfN14qFcjIvIdTxGxS8RgTbq vKB0jMM1HydB55eKamG6428ysgTqWqrq73X/5TAiydDnnBZXm75PVJ93Mq+AdRYFaCT1JYR3Chi fYJMd2lxUQehvxfRWciFLt62Y1PO06/FN0pycyQc2XDN6kwWpOqy5XqBIcGJUgWMHyR5HcuD3Qo ySp9OouBzZFUuiehV1vkpwIKrMFr2y8PaEyPWEp+ypp+FTAtxot/n/meiSZnIbZJ1bvkyAPalSS o0wgQXLuHf/hHrCaSlAdB1LcA1d/RszZahtFv1QHJtK3DxuCUd2yKe64Edp9S8Bso6DTCJpSA5L 23GQnecWkiFYzhL3uv/u2lAq2uo73d09Z4D+JypSoLVA8kHfZGV7NKmgdow0gPqXWKaMBkuJKRH gK+V1QQb5Fi3J1UQF7A== X-Authority-Analysis: v=2.4 cv=QetWeMbv c=1 sm=1 tr=0 ts=6a831740 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=7SNk80zgYqIXXrXIq28A:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-ORIG-GUID: 8XXIxtiMzqG-UNIU9Lj-0AODG3iLbSQ4 X-Proofpoint-GUID: 8XXIxtiMzqG-UNIU9Lj-0AODG3iLbSQ4 X-Proofpoint-Spam-Info: AW1haW4tMjYwODE3MDEwOSBTYWx0ZWRfX4s9EM4Mh36yp ZtKQktsj/przfHnT4y8f6WaDSgote9ZHbjIlV7BQpqPH6ReLonNK2QaqM/6yjqIowELQv6pj7WS zSp5So8lPo7Zr9W9FcKb3m9FQIyHKPc= 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=2026-08-17_01,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 adultscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608170109 On 8/17/26 4:13 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? (I didn't quite know how to parse the list of states you provided in your reply so I asked again) Konrad