From patchwork Mon Jul 29 01:56:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongxing Zhu X-Patchwork-Id: 13744173 Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 320A978C68 for ; Mon, 29 Jul 2024 02:15:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=92.121.34.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722219361; cv=none; b=qarzxVxxjGwjj6n6fUCg6iwaUTmF/wtTcv6o0a9GuanjjXxT+4WfeJwLP/B5dUh3KwiVGMrrdBOym1Xy5UlO7NDGStpBVsKkwevA/14qw6vlcuUoIUMcdlHYs+S3a/xl1eX99tFuSgIhf4BbV5w52b01CUaUxX/U1N1m071YAY8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722219361; c=relaxed/simple; bh=ZFVhHkPTDo6FoZoGON2cwcym53yrgu8xxzROJaE3ohw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=tB8mpyzIFXw2KiKftekdD8+hjpUYS+VmeasAy93uoFgX0yH6LZSqcKQrjXKP4cfw7hF3dTTRfAaPhKZCZg3SJLufgh2yKnyHj4eO4nTrcngocql7+PNNNYE+7hOdrP6qnywq/g7kIjLte7uOZ9jXsf6f6GyYuW9QWL2gH8xZeqM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; arc=none smtp.client-ip=92.121.34.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id B1A3C200CB4; Mon, 29 Jul 2024 04:15:57 +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 7A1902000C6; Mon, 29 Jul 2024 04:15:57 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 3990E183AD44; Mon, 29 Jul 2024 10:15:56 +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 2/4] dts: arm64: imx8mq: Add dbi2 and atu reg for i.MX8MQ PCIe EP Date: Mon, 29 Jul 2024 09:56:43 +0800 Message-Id: <1722218205-10683-3-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 Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Add dbi2 and iatu reg for i.MX8MQ 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.MX8MQ 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/imx8mq.dtsi | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi index e03186bbc415..d51de8d899b2 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi @@ -1819,9 +1819,11 @@ pcie1: pcie@33c00000 { pcie1_ep: pcie-ep@33c00000 { compatible = "fsl,imx8mq-pcie-ep"; - reg = <0x33c00000 0x000400000>, - <0x20000000 0x08000000>; - reg-names = "dbi", "addr_space"; + reg = <0x33c00000 0x100000>, + <0x20000000 0x8000000>, + <0x33d00000 0x100000>, + <0x33f00000 0x100000>; + reg-names = "dbi", "addr_space", "dbi2", "atu"; num-lanes = <1>; interrupts = ; interrupt-names = "dma";