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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4496BC433FE for ; Tue, 15 Mar 2022 22:28:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352250AbiCOW3f (ORCPT ); Tue, 15 Mar 2022 18:29:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352244AbiCOW3f (ORCPT ); Tue, 15 Mar 2022 18:29:35 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3DBCB1C92B; Tue, 15 Mar 2022 15:28:22 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CCB82612B7; Tue, 15 Mar 2022 22:28:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2FDBFC340E8; Tue, 15 Mar 2022 22:28:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1647383301; bh=IoWtr+uaNbF74yc3AVtjTkb2gJE77265clN6rkXSnkI=; h=In-Reply-To:References:Subject:From:Cc:To:Date:From; b=SuTfVErnY0tDWtg0x6YU6PmGOGI89MiQ4PQvzepNwhGuWF6Id+PwhL/1uCi5lpR8P dARQL+X/iThztMWo4jVwi+0x8IOy+wcPNo8v9tss2bzYoL1OJFHf5KXT/xRn45m81N NtHM07yAYwoRLYEpTr3ZsFNpNROZ1twUtiXbJbp50xvL71Jly26ALOPKBiQeYO+n8j t0onLke4nEEjxdqjT5eu6YapzZf2MUa2RZ1QZG/7mQezBkmvTPmC3GJJQIdqQA1di6 WR/LIAhgHyVac8DMZHfRihD34UcJAH/oaNRh3aPZMtHG5+8YhZI+pwZRNGcAF1Lhtv NnSFFMBuAyHjA== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable In-Reply-To: <20220315191255.221473-6-miquel.raynal@bootlin.com> References: <20220315191255.221473-1-miquel.raynal@bootlin.com> <20220315191255.221473-6-miquel.raynal@bootlin.com> Subject: Re: [PATCH v5 5/8] dmaengine: dw: dmamux: Introduce RZN1 DMA router support From: Stephen Boyd Cc: Milan Stevanovic , Jimmy Lalande , Pascal Eberhard , Thomas Petazzoni , Herve Codina , Clement Leger , Andy Shevchenko , Viresh Kumar , Miquel Raynal To: Gareth Williams , Geert Uytterhoeven , Magnus Damm , Michael Turquette , Miquel Raynal , Phil Edworthy , Vinod Koul , dmaengine@vger.kernel.org, linux-clk@vger.kernel.org, linux-renesas-soc@vger.kernel.org Date: Tue, 15 Mar 2022 15:28:19 -0700 User-Agent: alot/0.10 Message-Id: <20220315222821.2FDBFC340E8@smtp.kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Quoting Miquel Raynal (2022-03-15 12:12:52) > The Renesas RZN1 DMA IP is based on a DW core, with eg. an additional > dmamux register located in the system control area which can take up to > 32 requests (16 per DMA controller). Each DMA channel can be wired to > two different peripherals. >=20 > We need two additional information from the 'dmas' property: the channel > (bit in the dmamux register) that must be accessed and the value of the > mux for this channel. >=20 > Aside from the driver introduction, as these devices are described as > subnodes of the system controller, we also need the system controller > (clock) driver to populate its children manually. Starting from now on, > one child can be the dmamux. >=20 > Signed-off-by: Miquel Raynal > --- Acked-by: Stephen Boyd