From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C4FA0C369D7 for ; Wed, 23 Apr 2025 13:52:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Ol/28DWxMuKG8vzvqpbstQnt04MDTJNitImOHrr5gFI=; b=VyAJmeFh0LGZrFtzHDSsi1Z1pX IVFnPB32QwM/o8DN4ZXMwF+xnaq4HYS690U0XT5h3XNWK86maut/7kFFi3Ec5eOrAHxJLFIJiadGg Nq4m6bGMs7lojS/Pfu3ojBgGrvGYa4c3zYLSgHz4/AOM6YJpe6gMqpu1RgrjDBqv2zgBvQyxh5StL NEL6cFFHoA6+2zfWCM8yFIlIILHrEMSjwjZZKKfPQLGiaV4muIxp1q8M6DkxZSD2OoV8RrB7hSzC3 IsRs4ky0ekDZeYBRJMNe+QNWDLQuIk+Qtu00XZI8cpJMrnekci6L566cDtoqChR0gIax6SbxsKQBF HvdNt/YA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u7aWD-0000000AfxO-0bbw; Wed, 23 Apr 2025 13:52:05 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u7Z2H-0000000ASFq-42fI for linux-arm-kernel@lists.infradead.org; Wed, 23 Apr 2025 12:17:07 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 3013AA4CEBE; Wed, 23 Apr 2025 12:11:37 +0000 (UTC) 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250423_051706_068773_5CE7C9F4 X-CRM114-Status: GOOD ( 20.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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