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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09BD1C4BA13 for ; Wed, 26 Feb 2020 16:46:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA48624656 for ; Wed, 26 Feb 2020 16:46:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727637AbgBZQqH (ORCPT ); Wed, 26 Feb 2020 11:46:07 -0500 Received: from mx2.suse.de ([195.135.220.15]:58336 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726642AbgBZQqH (ORCPT ); Wed, 26 Feb 2020 11:46:07 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 5C95AADE0; Wed, 26 Feb 2020 16:46:05 +0000 (UTC) From: Nicolas Saenz Julienne To: Rob Herring , Nicolas Saenz Julienne , Florian Fainelli Cc: phil@raspberrypi.org, devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] ARM: dts: bcm2711: Add pcie0 alias Date: Wed, 26 Feb 2020 17:46:00 +0100 Message-Id: <20200226164601.20150-1-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some bcm2711 revisions have different DMA constraints on the their PCIE bus. The lower common denominator, being able to access the lower 3GB of memory, is the default setting for now. Newer SoC revisions are able to access the whole memory space. Raspberry Pi 4's firmware is aware of this limitation and will correct the PCIE's dma-ranges property if a pcie0 alias is available. So add it. Fixes: d5c8dc0d4c88 ("ARM: dts: bcm2711: Enable PCIe controller") Signed-off-by: Nicolas Saenz Julienne --- arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts index cb3385262705..479f6828d73f 100644 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts @@ -21,6 +21,7 @@ memory@0 { aliases { ethernet0 = &genet; + pcie0 = &pcie0; }; leds { -- 2.25.1