From patchwork Mon Jul 29 01:56:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 1965809 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=147.75.80.249; helo=am.mirrors.kernel.org; envelope-from=linux-pci+bounces-10924-incoming=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from am.mirrors.kernel.org (am.mirrors.kernel.org [147.75.80.249]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WXMRZ0rPFz1ybX for ; Mon, 29 Jul 2024 12:16:26 +1000 (AEST) Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id BE2D91F2205E for ; Mon, 29 Jul 2024 02:16:23 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 0BFC57CF25; Mon, 29 Jul 2024 02:16:01 +0000 (UTC) X-Original-To: linux-pci@vger.kernel.org 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 6CA842B2CC; Mon, 29 Jul 2024 02:15:58 +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=1722219360; cv=none; b=MXmY2X2udvXFfHSk4wXJNDwkQPnjjCXa2TZNmrYMKZpB3pV14euDsN//wocPdDKc1OJxjQO2MSiL4lpVFQbEytTlDy1qveQDkhCFtKqUgQQThNqQa43aXvMEYKw4Cj9phH3Jc5u0DwFzCAbTrN3aLkxhFxGgWurzH7ckyuDU1Gk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722219360; c=relaxed/simple; bh=PBVxTpmzAj3S5x0cRCD2X+EpBUj60QIbx/qURLaqUjQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=TyONLbf3pks+/e3JWRdOUMVwfz+L3SWTIOrLwQMNuGrliPgECjr8etTq0Rmu+vwpwOZF8qgJDukb77tySEd6HwBSFSZJWKGoQvuQiDz3FLeIahAn3cKmICL4nWogF6twuB+sN7Tyjj26JXevAu6uMHk9W+oJHaMDFhWFwH9lQKM= 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 E5E032000FC; Mon, 29 Jul 2024 04:15:56 +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 AC0FA2000C6; Mon, 29 Jul 2024 04:15:56 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 0AFDD183AD45; Mon, 29 Jul 2024 10:15:54 +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 1/4] dt-bindings: imx6q-pcie: Add reg-name "dbi2" and "atu" for i.MX8M PCIe Endpoint Date: Mon, 29 Jul 2024 09:56:42 +0800 Message-Id: <1722218205-10683-2-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: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Add reg-name: "dbi2", "atu" for i.MX8M PCIe Endpoint. 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.MX8M 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 Reviewed-by: Rob Herring (Arm) --- .../devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml index a06f75df8458..84ca12e8b25b 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml @@ -65,12 +65,14 @@ allOf: then: properties: reg: - minItems: 2 - maxItems: 2 + minItems: 4 + maxItems: 4 reg-names: items: - const: dbi - const: addr_space + - const: dbi2 + - const: atu - if: properties: @@ -129,8 +131,11 @@ examples: pcie_ep: pcie-ep@33800000 { compatible = "fsl,imx8mp-pcie-ep"; - reg = <0x33800000 0x000400000>, <0x18000000 0x08000000>; - reg-names = "dbi", "addr_space"; + reg = <0x33800000 0x100000>, + <0x18000000 0x8000000>, + <0x33900000 0x100000>, + <0x33b00000 0x100000>; + reg-names = "dbi", "addr_space", "dbi2", "atu"; clocks = <&clk IMX8MP_CLK_HSIO_ROOT>, <&clk IMX8MP_CLK_HSIO_AXI>, <&clk IMX8MP_CLK_PCIE_ROOT>;