From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=213.167.242.64 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793662962; b=Uxl+QNOAifC4N6ftwaYBRCtdnKXvSIDfFWoVyOfl3VXJ4TuSPsDGNhlQxCqllzqWboz4 xJ7xFoZIuv57t5HRx8CzH/oX2ni/+sProkZOGPvHao9uvR41jxW1flN64D6Pt/vO+YYgC Xs7p+d9kSzSVfqPRVFWAAUBd0n6eI3nzkI1byMPKx4haFAQd09HY8kvUigZxGtIgunjNm W518k9tO8UH2qPJ7JoesNNPRbCIFezFKO2e3lu/O6d+8L0Tf3QhmKceK+SNTLwm5VTClc WbPXeqfEAxOwFrj7qez3FcyrgsEsqpq6fcZG9ECZodVb0HjvAq48AACYyCbobquQOQg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793662962; h=DMARC-Filter:Received:DKIM-Signature:Date:From:To:Cc:Subject: Message-ID:References:MIME-Version:Content-Type:Content-Disposition: In-Reply-To; bh=ozF3h4aUekaFNOe7DRyg0a3bh7Yt4mQLO1saPU6M4xE=; b=PAinOwSs0khKB6QXwIdkAzgWC6q2SUxePEt9cCttMV5ratyYIuVpJdfEwZBwqgMyfOAB vc6r+YCZ9OkCQ1kzXPJzpzhld4k7ywOf91jOH3nBrkFxAipIldyUG3o/k1aYe4cMQyxta 3Xd5qnYIorr0kTE2QiYm8VZGAmAUR1X0zzSDqcpIlTryEVmgWKGiJS7UED7kVOA2egPEl CzjlrM6N/2Yr5a+V5gKil8fM5ebASoq3g8j4sT7GiVkQsca9uPKOEGxVXw3J40yPSZ+TX BvFwLzdU3mUXHDHmak4ViRs2FomJ57eDgTpVaXQlNZiSwpCvYbgo/p1QJXEH/sXwRWg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass header.d=ideasonboard.com header.i=@ideasonboard.com header.a=rsa-sha256 header.s=mail header.b=gWUj0o1K; arc=none smtp.remote-ip=213.167.242.64 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B42C7606A329; Mon, 2 Nov 2026 23:42:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org B42C7606A329 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.a=rsa-sha256 header.s=mail header.b=gWUj0o1K Received: from killaraus.ideasonboard.com (2001-14ba-70f3-e800--a06.rev.dnainternet.fi [IPv6:2001:14ba:70f3:e800::a06]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 3690BB1A; Tue, 3 Nov 2026 00:40:23 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1793662823; bh=wAQ2GsgCD/YQbE45EYrTMRsnhVSS61FPzdNJs1TgxY4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gWUj0o1Kms6l1VLKnhTo6f94CoPkynqMsMINex1oVsbdXynf0+v1F0br2jDDty1aE xqjTIiVcZmsIirZnG7OlMKxcxxNTLaTgUIpgrhpH2lUXFDHoV/CXIEYtL+g2dAnKU8 GWEebUM2t1mKqXLfiWaY1IMeF5eY7em2SfYV2bKE= Date: Tue, 3 Nov 2026 01:42:38 +0200 From: Laurent Pinchart To: Igor Velkov Cc: Dafna Hirschfeld , Mauro Carvalho Chehab , Nicolas Dufresne , Hans Verkuil , Heiko Stuebner , linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] media: rkisp1: Depend on PM Message-ID: <20261102234238.GD3559911@killaraus.ideasonboard.com> References: <20261102-rkisp1-depends-on-pm-v1-1-35a26cb2bbce@iav.lv> <20261102223316.GB3548113@killaraus.ideasonboard.com> <20261103005500.rkisp1-pm-reply-1@iav.lv> <20261102231206.GA3559911@killaraus.ideasonboard.com> <20261103-rkisp1-pm-reply-2@iav.lv> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20261103-rkisp1-pm-reply-2@iav.lv> On Tue, Nov 03, 2026 at 01:25:45AM +0200, Igor Velkov wrote: > On Tue, Nov 03, 2026, Laurent Pinchart wrote: > > What does the driver bind to when running on a system that has PM=n ? On > > which platform can that happen ? > > None that I can name: the nodes exist only on Rockchip and i.MX8 boards, > and those select PM. The patch came out of the rkvdec thread, where Nicolas > pointed out that with PM=n the first MMIO access can hang and asked to > check similar drivers [1]; rkisp1 and rga had the same pattern. If that > case is not worth guarding, I'll drop it. Given that it can't happen on any platform, I don't think the patch is needed. > [1] https://lore.kernel.org/r/8aafdbbf04a0d939c6b4d7d5577d97bb58d1c439.camel@collabora.com -- Regards, Laurent Pinchart