From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f41.google.com (mail-ej1-f41.google.com [209.85.218.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6FE6B1FE451 for ; Wed, 9 Jul 2025 11:59:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752062383; cv=none; b=hyIBmV3PII7R5DmYXN7MumE/blP+RjNBYRmdN/tSz076Et0EOXSCpIcsWPwb7zdnl+v38E5ENEc7FQ8LOxZIqhh6JoWBmLe/EF+HPeNx9UkWoY/VtaGINqc6xzNAZTdFlgX4+qzFSb9frPR/bGB7v0khu6hfbUwm+tN8cnnXomg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752062383; c=relaxed/simple; bh=9pVv9RHixO9d2u5FdY4HrMvtjdLG3sLqMZQKJyVQ/RE=; h=Mime-Version:Content-Type:Date:Message-Id:Cc:Subject:From:To: References:In-Reply-To; b=R9y5NT1JOY3UJGIaoH4RM/fcK7YoW1c9nMQFQdSljG4cNokBanUZKx4NNcDqZqlVxNI6UNhx3+panathBvD9u4zj9AACso2HI+lAiryV75H+H6zSYwVHccMByqrqmN0Ecb1fU20d3vNrpXlh9EBrYsvsBBsE75Hu0CiJp6pVbTQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=fairphone.com; spf=pass smtp.mailfrom=fairphone.com; dkim=pass (2048-bit key) header.d=fairphone.com header.i=@fairphone.com header.b=I/l9ss5C; arc=none smtp.client-ip=209.85.218.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=fairphone.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fairphone.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fairphone.com header.i=@fairphone.com header.b="I/l9ss5C" Received: by mail-ej1-f41.google.com with SMTP id a640c23a62f3a-ae3a604b43bso864349866b.0 for ; Wed, 09 Jul 2025 04:59:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fairphone.com; s=fair; t=1752062380; x=1752667180; darn=vger.kernel.org; h=in-reply-to:references:to:from:subject:cc:message-id:date :content-transfer-encoding:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=VwaoJLiJYF12OSK8rGI95sJddGwuByNYIOGTk/ksVzQ=; b=I/l9ss5C9PAfhDlfShQ35YWk+BRm0E17GRDikPaSam0JgAbLc7P2ns4sZtt/a4OVjg rYbDpPQ0KVyUKUQSAikua41foV/Ua12/X2/pUCQyLppBr867YhrGPO1mnpzhnTsIzStj ekxRxJJK3kCbTDa6KevbEF+bKhYv4R8x29hQuT/YtrSOHMAqlaqMGNs5alz1aVaA0hNZ KCBMRZ60vAFAWebteaqt67asWPfIUBxKYEuYt9IbqYsqxxkifb2d8rF++zBaPUray8Kd 3QMI63XvglFpMilnPnKQaVVZkWl8xSMjvxmQbxieOILT2Hoo2iVGfrksdWPkBxTJDsp0 RXRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752062380; x=1752667180; h=in-reply-to:references:to:from:subject:cc:message-id:date :content-transfer-encoding:mime-version:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=VwaoJLiJYF12OSK8rGI95sJddGwuByNYIOGTk/ksVzQ=; b=bTnNIKJBvSZ+FxABjhCbrb0iMHc8XarfUXhHX1z7CpKQZbvcAQDt7fy8dfFvVg2eD6 Qxms0poQrxA3hwEYQCpa/e5fd5zKX+loM8BF7LND9V1IuU/5vFqUC5PcgZpzjPQtP2+o bMPD7wCS4Q4LmOvDt564OpfdyBeEP/aH4BHy1Jvguc9hVth2rQKdOHmvMNRCyDKPYMUl REB51ENSxvI/IPR95sP2xqsXpBAkM6ZwL68S0o/G+S7wGRu+5x7ooSNwwF50hTDDnakT lNDjpNbSFIHa52Ie30IqZ1uyMsu4O2L9CRHUGr9KR9VCqEhK8bcoGS4Q8lopKF0WFBbD R2tA== X-Forwarded-Encrypted: i=1; AJvYcCVnycH9S9oFt6QzyHLvIneUS+OpmyA9YgZ1/GAi65QLb99cCsFiYf8gXBx/CqlTOW9TS/hA44cdajj9@vger.kernel.org X-Gm-Message-State: AOJu0YwIhw6qRJUdUgWGEmFCA816U2yauEqTpppp+XRAZUQSNBX/KgnI z8S2GYpXN7qGf2hZbKX36WEd7klHSiVZLQS6XB7Bmqtpf4jVRu0LHbDOSl2jOGIo2pc= X-Gm-Gg: ASbGncssgfN7s1SEjhE/ZcdFqTvJujxKx8PfkT6ZA0Z14LkIMHCHMkQZMAS/XAgH66D 5V2UBWZ+drWJPwhhR4JJOffpDOVAxrhF7Y17QJl9beCq3FTOBAMs/JrxkrnSGhw8GWonx0Pracs XyCg862/nDrL2o6AtlBgIezh0Fbz4mticf5vjnBHTp8rb9ElVGjeLJeBrqWjGu5hhzVImnOBoZy 5L0gUbDcb1aKuINpWF6vixoMaBN0CTuttnp8/bsUV64wuMV0LtmzVUTNnpzFr1Yvfp19bLc1H1I RVn2rcut1FgjAzdclVhmC357U6Tp2n5mFn/eKhFfBvbQmnRKdvn1DDuDelGgQnvhi4ptDEfnlue /3Dxg6fLf3lAnYuWxoBUV+A0fplXx1UmemX/b9i+M5A== X-Google-Smtp-Source: AGHT+IF5M43gbb1VPZRgUmXUN6Xh1tAveUbZcs0w5aMrTx9Nx/yzR4T2sKl+aY7FPc+zZ1BgthqpOg== X-Received: by 2002:a17:907:9708:b0:ae3:5f74:11fd with SMTP id a640c23a62f3a-ae6cf5e8e9bmr206052066b.23.1752062379715; Wed, 09 Jul 2025 04:59:39 -0700 (PDT) Received: from localhost (144-178-202-139.static.ef-service.nl. [144.178.202.139]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ae6d7fc3584sm76721666b.62.2025.07.09.04.59.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Jul 2025 04:59:39 -0700 (PDT) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Wed, 09 Jul 2025 13:59:38 +0200 Message-Id: Cc: "Hans de Goede" , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , "David Airlie" , "Simona Vetter" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Javier Martinez Canillas" , "Helge Deller" , , , , Subject: Re: [PATCH v2 3/5] drm/sysfb: simpledrm: Add support for interconnect paths From: "Luca Weiss" To: "Dmitry Baryshkov" X-Mailer: aerc 0.20.1-0-g2ecb8770224a-dirty References: <20250623-simple-drm-fb-icc-v2-0-f69b86cd3d7d@fairphone.com> <20250623-simple-drm-fb-icc-v2-3-f69b86cd3d7d@fairphone.com> In-Reply-To: Hi Dmitry, On Sun Jul 6, 2025 at 1:14 PM CEST, Dmitry Baryshkov wrote: > On Mon, Jun 23, 2025 at 08:44:47AM +0200, Luca Weiss wrote: >> Some devices might require keeping an interconnect path alive so that >> the framebuffer continues working. Add support for that by setting the >> bandwidth requirements appropriately for all provided interconnect >> paths. >>=20 >> Reviewed-by: Thomas Zimmermann >> Signed-off-by: Luca Weiss >> --- >> drivers/gpu/drm/sysfb/simpledrm.c | 83 ++++++++++++++++++++++++++++++++= +++++++ >> 1 file changed, 83 insertions(+) > > If simpledrm is being replaced by a proper DRM driver (thus removing > those extra votes), will it prevent ICC device from reaching the sync > state? How can I try this out? On Milos I don't have MDSS yet but I can add an interconnect path on another device to try it. Are there some prints I can enable, or check sysfs/debugfs to see if it reached sync state? I only recall seeing sync_state pending warnings in some instances, but never that it's synced. Regards Luca