From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E3BDE3890E3 for ; Tue, 18 Aug 2026 09:05:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787043931; cv=none; b=CMwNJm4qdaGN2vgwoPDyjETTBXujSJB2vgE/Z4UFhKzHNSDLK0ep5CYxVYg1X3zw704n+ElTPQxakskVC8omnewi3srFLRccpQ2FULMj60z8t1Yf6uUrhIIkh9RRqCdQPcoyCm4BkanLil1TbOD22PrOeqH5Oym0OlxSdqduUcw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787043931; c=relaxed/simple; bh=dEnljxo0cPfEBmMxWEU2YfmO6Q8TD6rHTlbi0qUFIBw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=RoNIqrYt3j1gy+lQ99MySBc6BYptWFz98aNNsZ3sBAhwe6l0W2hd6eiyhg17xeAK6iUwKVC/cj2CFuhRw863FSRPiRlH7P+z2tdP8n71UzYjDEMYprb6u2b9LjVux9io8ccGr+Ij3gOKccErINrFMxdBaLhuKIA/T/u4KLj47h4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VvEGMl0i; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="VvEGMl0i" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 658151F000E9; Tue, 18 Aug 2026 09:05:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787043929; bh=dEnljxo0cPfEBmMxWEU2YfmO6Q8TD6rHTlbi0qUFIBw=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=VvEGMl0iEuoU7p4cr7L3b2P1L5Oga5Jz0bPSjRk+B129D3GlF/EJOSQy8hsF8ceOG 3Zhcsd9yvDMlNQbhDM04tqbkyr7rtBcVy0bAz1vFmsKdLQUuWR083cbUh9MKq5zRIS 2dIu9TxTVVTeB6owTDMLeZ/PdeV+Spnx/QwixaQywUd3JNLfm+3iM/QzdHK+tQ9ZHX bNjdXOmKL0yxMqgnOz9nJQFipsHowUBOLZeOxYzqoTH/dDQb0b/FpRqnEWDreP3vgi 5GpjM+jASM2mIvF3KDDdPswQPhb/r1sAXiAx5LmLCvfujTyT9ub7JlKSHdg4NG/rby ukYvrQRtC2gWA== Date: Tue, 18 Aug 2026 11:05:24 +0200 From: Krzysztof Kozlowski To: =?utf-8?B?TWHDrXJh?= Canal Cc: Maxime Ripard , Dave Stevenson , Raspberry Pi Kernel Maintenance , Stefan Wahren , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Ray Jui , Scott Branden , Broadcom internal kernel review list , kernel-dev@igalia.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 2/4] dt-bindings: display: bcm2835-v3d: Add an optional reset line Message-ID: <20260818-idealistic-chivalrous-sawfish-08ddae@quoll> References: <20260816-vc4-reset-control-v1-0-896444373716@igalia.com> <20260816-vc4-reset-control-v1-2-896444373716@igalia.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20260816-vc4-reset-control-v1-2-896444373716@igalia.com> On Sun, Aug 16, 2026 at 11:05:41AM -0300, Ma=C3=ADra Canal wrote: > The BCM2835 PM block has exposed a reset line for the V3D block since > commit 670c672608a1 ("soc: bcm: bcm2835-pm: Add support for power domains This is a reset provider driver, so not really relevant here. Driver commit would be relevant if it was about consumer who implemented undocumented ABI. I suggest to drop reference to driver and instead describe the hardware. > under a new binding."), which allows the GPU to be reset without > power-cycling its domain. Document it so that the vc4 driver can use it to > recover from a GPU hang. Does every device have it? Cygnus as well? Best regards, Krzysztof