From patchwork Fri Aug 4 02:09:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongxing Zhu X-Patchwork-Id: 13341151 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 A8C74EB64DD for ; Fri, 4 Aug 2023 02:44:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233525AbjHDCoD (ORCPT ); Thu, 3 Aug 2023 22:44:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56712 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231953AbjHDCoC (ORCPT ); Thu, 3 Aug 2023 22:44:02 -0400 Received: from inva020.nxp.com (inva020.nxp.com [92.121.34.13]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C140B173C; Thu, 3 Aug 2023 19:44:00 -0700 (PDT) Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 48D3C1A0915; Fri, 4 Aug 2023 04:43:59 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 0D8231A08C4; Fri, 4 Aug 2023 04:43:59 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 674641802200; Fri, 4 Aug 2023 10:43:57 +0800 (+08) From: Richard Zhu To: frank.li@nxp.com, l.stach@pengutronix.de, shawnguo@kernel.org, lpieralisi@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: hongxing.zhu@nxp.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com Subject: [PATCH v2 0/9] Add legacy i.MX PCIe EP mode supports Date: Fri, 4 Aug 2023 10:09:26 +0800 Message-Id: <1691114975-4750-1-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 X-Virus-Scanned: ClamAV using ClamSMTP Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add legacy 32bit i.MX PCIe EP mode support The PCI controller contained in i.MX6/7 legacy SOCs is one dual mode PCIe controller, and can work either as RC or EP. This series add i.MX6/7 PCIe EP mode supports. And had been verified on i.MX6 sabresd and i.MX7 SDB boards. In the verification, one board PCIe is used as RC, the other one is used as EP. Use the cross TX/RX differential cable connect the two PCIe ports of these two boards. +-----------+ +------------+ | PCIe TX |<-------------->|PCIe RX | | | | | | Board | | Board | | | | | | PCIe RX |<-------------->|PCIe TX | +-----------+ +------------+ Changes from v1 to v2: Refer to Frank's comments: To simple .get_features codes, add "const struct pci_epc_features" *epc_features in drvdata. [PATCH v2 1/9] dt-bindings: PCI: fsl,imx6q: Add i.MX6Q and i.MX6QP [PATCH v2 2/9] dt-bindings: PCI: fsl,imx6q: Add i.MX6SX PCIe EP [PATCH v2 3/9] dt-bindings: PCI: fsl,imx6q: Add i.MX7D PCIe EP [PATCH v2 4/9] arm: dts: nxp: Add i.MX6QDL and i.MX6QP PCIe EP [PATCH v2 5/9] arm: dts: nxp: Add i.MX6SX PCIe EP support [PATCH v2 6/9] arm: dts: nxp: Add i.MX7D PCIe EP support [PATCH v2 7/9] PCI: imx6: Add i.MX6Q and i.MX6QP PCIe EP supports [PATCH v2 8/9] PCI: imx6: Add i.MX6SX PCIe EP support [PATCH v2 9/9] PCI: imx6: Add i.MX7D PCIe EP support Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml | 50 +++++++++++++++++++++++++++++++++++++++++---- arch/arm/boot/dts/nxp/imx/imx6qdl.dtsi | 14 +++++++++++++ arch/arm/boot/dts/nxp/imx/imx6qp.dtsi | 4 ++++ arch/arm/boot/dts/nxp/imx/imx6sx.dtsi | 17 +++++++++++++++ arch/arm/boot/dts/nxp/imx/imx7d.dtsi | 27 ++++++++++++++++++++++++ drivers/pci/controller/dwc/pci-imx6.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 201 insertions(+), 4 deletions(-)