From patchwork Mon Dec 27 12:06:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 12699709 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 AE4C1C433EF for ; Mon, 27 Dec 2021 12:07:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236585AbhL0MHT (ORCPT ); Mon, 27 Dec 2021 07:07:19 -0500 Received: from mout.kundenserver.de ([212.227.17.24]:46457 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236580AbhL0MHS (ORCPT ); Mon, 27 Dec 2021 07:07:18 -0500 Received: from localhost.localdomain ([37.4.249.169]) by mrelayeu.kundenserver.de (mreue108 [212.227.15.183]) with ESMTPSA (Nemesis) id 1Mirb8-1mXzoK2zJM-00erHu; Mon, 27 Dec 2021 13:07:04 +0100 From: Stefan Wahren To: Vinod Koul , Rob Herring , Florian Fainelli , Nicolas Saenz Julienne Cc: Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, dmaengine@vger.kernel.org, Phil Elwell , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Lukas Wunner , linux-rpi-kernel@lists.infradead.org, Stefan Wahren Subject: [PATCH RFC 11/11] ARM: dts: bcm2711: add bcm2711-dma node Date: Mon, 27 Dec 2021 13:06:52 +0100 Message-Id: <1640606812-11110-2-git-send-email-stefan.wahren@i2se.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1640606812-11110-1-git-send-email-stefan.wahren@i2se.com> References: <1640606812-11110-1-git-send-email-stefan.wahren@i2se.com> X-Provags-ID: V03:K1:U3nO36HzZGXq40n9R882naHiNjUl4oAFLiWYXZZHkaUh42dvvLS burphzCrKM4DScfSiS/mZaIkh+uybGI1l2APtf1yp9EoWu0+1FY/9Ry/OPB2kmcRbGK4WEa ndQURDst4PiujCCqJSeJGfu5+BNnHwBVdfuFSMIwLx/YjacYrvvpctnSy4Xpcma2qJ9qrAX C6uiZeOtSxYEys3O9MIdA== X-UI-Out-Filterresults: notjunk:1;V03:K0:PcMir07Pc54=:bxIJKo2MiIwel1ZhW6jVx5 e8W38T1FRN+TR0DUfVTqJNCcq4sZ18dUnvBpn0tQz41g4qmNg52LH3/xa4JhgnlF582q6dbYw KYX1R8UcQxW85FjugCnqn3AEX9uEk/QDGQx07FDg1UHXITPDlC6AYbVK96A2VNYCw1wqSRoqs p3z+1pEi6fYIv0wGedFrsmQXCweu5BoiupAV0UTd3cnCt6yAfQCIGXvXq4SrTywFiosFVi4Hx f0LWr2aA4dYS2VZ7xYgkRiZQDlDKQOKLzsS2J9cVWj6ba7rYwnxnsXkyfsz0t+e6AmdXTS96D TZlesK47HWeSJ8EWounZTgHaYyd2U6dMWQz6S5kaPVtUTxFRE+6ObJuTLoQ7R+y2xuj+yBYNv Ld9Wvo8xegHoa+ws12LL2lKucFn7f0QpQfzO7a+Alr10N/4yYcQtlAiVRk5Tz0CmEu71RMUfb j6QQm+Yrtzy57pRI/RPdXb8bZhWuXk/ruZBuocVcnMj4n/hFTQAXXDfmPsBjV4/YgdCXuAHIP jsJyXtm0xZHchTSUVxnDujGVRKwUwsCc74ptcEnw07ZRPRezn3vips9TtGupRnkXY4m0Oe3hV ImhGcrhEScceH1pa0Q+2ANQ5I4ER+dIQ/SrX2a9SkdCj/aC+if6O5XUG77ClLZoRMvXNlduWi WF48MEk8YTZZrqFO/iw3/899Es5JBVzNT340L0fkmr3t/BYAjE/muLJFXdkujchIFqDEpzdaz Zlx4qJWgfcsUgkqE Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org BCM2711 has 4 DMA channels with a 40-bit address range, allowing them to access the full 4GB of memory on a Pi 4. Not sure which adjustments to the parent node (scb) are required. Signed-off-by: Stefan Wahren --- arch/arm/boot/dts/bcm2711.dtsi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi index 590068b..12f373b 100644 --- a/arch/arm/boot/dts/bcm2711.dtsi +++ b/arch/arm/boot/dts/bcm2711.dtsi @@ -536,6 +536,22 @@ #size-cells = <0x1>; }; }; + + dma40: dma-controller@7e007b00 { + compatible = "brcm,bcm2711-dma"; + reg = <0x0 0x7e007b00 0x400>; + interrupts = , /* dma4 11 */ + , /* dma4 12 */ + , /* dma4 13 */ + ; /* dma4 14 */ + interrupt-names = "dma11", + "dma12", + "dma13", + "dma14"; + #dma-cells = <1>; + /* The VPU firmware uses DMA channel 11 for VCHIQ */ + brcm,dma-channel-mask = <0x7000>; + }; }; };