From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6CDBC1E86E; Wed, 23 Apr 2025 12:17:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745410626; cv=none; b=mq2W0iGaLsoz6YxF375mDqIGufQ62hrF+g4447V00OvvPz+n3iQFO/l1MpFl9KoM1EiCjVEV4gh9CeHIZO1Wrd0UZld0apYoAYfTb7ZQMBuDugsl557Ww9AXc8aAVqDaoXUmEjgk4XItSV8Jj+2d9XeWG6Qis7kka1rObVaGDI4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745410626; c=relaxed/simple; bh=s6sHA2mYPiaTg1SBSDd0rm5YqfRkSrgtUKA0vRyKMRE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=tnktyvKvpW42JjQ8l6qeeOEQQX0LM5bTBQFtbtY48WOPGISH3XUPtpxlRItGrzTd6EprHvLstWiZcopGNd7xbN2likxYiOgS5bCe2euqMNJJ2otaG+vL0QOnJtlbKIhlZreOWsatjSEtArGqzYPOGQ7kAuCuE/1v/DK0Sq++MoY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KzB+jlA3; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KzB+jlA3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6C995C4CEEC; Wed, 23 Apr 2025 12:17:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745410624; bh=s6sHA2mYPiaTg1SBSDd0rm5YqfRkSrgtUKA0vRyKMRE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=KzB+jlA3mrMH9LuaG5V+4T5n5YnQaMTgGdJSpCiIKLO8ug7B48W22vYV6EIaG3ek8 JLHTKfDq6A9uN4hAmJ1MPs6VOyODGxKGUt7Jtxjp/gq0vn0ipixo0OQqcoHieGAfDG 8Sa7ixVZLU8ZKoxd6iq0JJTHPg5Ce7Q8CDmq0F98T9xPPlcGfdz0Ysj7Ri0yEniGaY BVD2FNR5AzyOyw8fhiBscwIz1gqYJeG/kocGjz0XoY2KUBuuzlVl0l60sZAFwR/U+V y6YpZlqueU54lyP15YD/aoMI2Km3y4g07jRL7J5513Rti3PKSjEvypD1iONOzQy1g5 zs1pIMmpPe2dA== Date: Wed, 23 Apr 2025 17:47:01 +0530 From: Vinod Koul To: Geert Uytterhoeven Cc: Robin Murphy , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] dmaengine: ARM_DMA350 should depend on ARM/ARM64 Message-ID: References: <50dbaf4ce962fa7ed0208150ca987e3083da39ec.1745345400.git.geert+renesas@glider.be> Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On 23-04-25, 14:13, Geert Uytterhoeven wrote: > Hi Vinod, > > On Wed, 23 Apr 2025 at 13:48, Vinod Koul wrote: > > On 23-04-25, 13:11, Geert Uytterhoeven wrote: > > > On Wed, 23 Apr 2025 at 12:59, Robin Murphy wrote: > > > > On 2025-04-22 7:11 pm, Geert Uytterhoeven wrote: > > > > > The Arm DMA-350 controller is only present on Arm-based SoCs. > > > > > > > > Do you know that for sure? I certainly don't. This is a licensable, > > > > self-contained DMA controller IP with no relationship whatsoever to any > > > > particular CPU ISA - our other system IP products have turned up in the > > > > wild paired with non-Arm CPUs, so I don't see any reason that DMA-350 > > > > wouldn't either. > > > > > > The dependency can always be relaxed later, when the need arises. > > > Note that currently there are no users at all... > > > > True, but do we have any warnings generated as a result, if there are no > > dependency should we still limit a driver to an arch? > > I am not aware of any warnings (I built it on MIPS yesterday ;-). > It is just one more question that pops up during "make oldconfig", > and Linus may notice and complain, too... True, give there are no users, lets pick this and drop if we get a non arm user -- ~Vinod