From patchwork Mon Jul 29 01:56:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 13744188 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 6AA80C3DA64 for ; Mon, 29 Jul 2024 02:18:08 +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:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=On8/2WEi5f8dIxA3wWYt3FoVwvB9oogKxY8bLgXbKJI=; b=5BqPQyN7PpT2gvCylRef+5ALq+ tBSt19HYtAkAC8+2yjWO1dWpiDYR164U6BWi6iMvxL/CSBURDjyRy9hYOQmepaKxQm8K1WDBT3y08 TbeDd6QlK5yALFftGyP98Fj6eo2QLP1DNLBqiOnh//VCLcjzw9ho+rWOV7jmzm1cyiGfgSnskdC8y fYlNAL/mU4tteyIZsnOWRg+5T23GW6EYW8VH0MRkMACjM/Xc2/nKxq8RSzjARMEeVmQKlRtpkqyal MLEczZMpUsFh80IV807EFMLM3zmCLegdmtVABnPb4TW4G00X77/OsAHz7QxWUzjLCjt+tolCUuE2q p4yU+PLQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sYFxZ-00000009iKk-0t0t; Mon, 29 Jul 2024 02:18:01 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sYFvd-00000009hjJ-3q7r for linux-arm-kernel@lists.infradead.org; Mon, 29 Jul 2024 02:16:03 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 50986201274; Mon, 29 Jul 2024 04:16:00 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 212232019A4; Mon, 29 Jul 2024 04:16:00 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 81D30183AD44; Mon, 29 Jul 2024 10:15:58 +0800 (+08) From: Richard Zhu To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, l.stach@pengutronix.de Cc: hongxing.zhu@nxp.com, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, imx@lists.linux.dev Subject: [PATCH v4 4/4] dts: arm64: imx8mm: Add dbi2 and atu reg for i.MX8MM PCIe EP Date: Mon, 29 Jul 2024 09:56:45 +0800 Message-Id: <1722218205-10683-5-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1722218205-10683-1-git-send-email-hongxing.zhu@nxp.com> References: <1722218205-10683-1-git-send-email-hongxing.zhu@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240728_191602_118928_45101DF0 X-CRM114-Status: GOOD ( 10.86 ) 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 Add dbi2 and iatu reg for i.MX8MM PCIe EP. For i.MX8M PCIe EP, the dbi2 and atu addresses are pre-defined in the driver. This method is not good. In commit b7d67c6130ee ("PCI: imx6: Add iMX95 Endpoint (EP) support"), Frank suggests to fetch the dbi2 and atu from DT directly. This commit is preparation to do that for i.MX8MM PCIe EP. These changes wouldn't break driver function. When "dbi2" and "atu" properties are present, i.MX PCIe driver would fetch the according base addresses from DT directly. If only two reg properties are provided, i.MX PCIe driver would fall back to the old method. Signed-off-by: Richard Zhu Reviewed-by: Frank Li --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 9535dedcef59..4de3bf22902b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -1375,9 +1375,11 @@ pcie0: pcie@33800000 { pcie0_ep: pcie-ep@33800000 { compatible = "fsl,imx8mm-pcie-ep"; - reg = <0x33800000 0x400000>, - <0x18000000 0x8000000>; - reg-names = "dbi", "addr_space"; + reg = <0x33800000 0x100000>, + <0x18000000 0x8000000>, + <0x33900000 0x100000>, + <0x33b00000 0x100000>; + reg-names = "dbi", "addr_space", "dbi2", "atu"; num-lanes = <1>; interrupts = ; interrupt-names = "dma";