From patchwork Fri Aug 24 07:36:03 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanjie Lin X-Patchwork-Id: 10575371 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 430711579 for ; Fri, 24 Aug 2018 14:39:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 301FC2C928 for ; Fri, 24 Aug 2018 14:39:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 239A72C963; Fri, 24 Aug 2018 14:39:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C99952C928 for ; Fri, 24 Aug 2018 14:39:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=kIMIQ5YtGxCUZxFM6HneD3EuQRF553OFgFKhvIajm0Q=; b=kVof9GfvU+s/Pg 01w9Em1eKu78EcWXehcA1/1IFcFJKtBmoHvj0SrJHLXM6rBtwh616eICs5fCPOjc1DKl/rvRDtROs m+FzORtWfFP8bSb1fJPcg9m+HjvkxO9NDHpvdB0Q3Wq2VAbmg4M2atm0t/32t80jJHwzFjgd0n8bx /W1glACVzmPA3R1Vzv78tlUlXpIgOLVB9aJrjMZgoHkVXZv+JSf5wbjvCpNR2XUaQw6wWMVrGA6aY 5OhtZ15KBDrQd/FB+QpGi25mxlxJwVKfzU+IzrPK9HdL1kyvogVyiIzHgXMNOcJfSczTuvI0vyvMF 5aBF5KeHTjckfo4q/apA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1ftDFJ-0001f1-NJ; Fri, 24 Aug 2018 14:39:29 +0000 Received: from mail-sh2.amlogic.com ([58.32.228.45]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1ft7Ao-0002qG-Ty; Fri, 24 Aug 2018 08:13:04 +0000 Received: from droid10.amlogic.com (10.18.11.213) by mail-sh2.amlogic.com (10.18.11.6) with Microsoft SMTP Server id 15.0.1320.4; Fri, 24 Aug 2018 15:35:39 +0800 From: Hanjie Lin To: Bjorn Helgaas Subject: [PATCH v2 1/2] dt-bindings: PCI: meson: add DT bindings for Amlogic Meson PCIe controller Date: Fri, 24 Aug 2018 15:36:03 +0800 Message-ID: <1535096165-45827-2-git-send-email-hanjie.lin@amlogic.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1535096165-45827-1-git-send-email-hanjie.lin@amlogic.com> References: <1535096165-45827-1-git-send-email-hanjie.lin@amlogic.com> MIME-Version: 1.0 X-Originating-IP: [10.18.11.213] X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Herring , Hanjie Lin , Jianxin Pan , devicetree@vger.kernel.org, Kevin Hilman , Yixun Lan , linux-kernel@vger.kernel.org, Yue Wang , Liang Yang , Jian Hu , linux-pci@vger.kernel.org, Qiufang Dai , linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Yue Wang The Amlogic Meson PCIe host controller is based on the Synopsys DesignWare PCI core. This patch adds documentation for the DT bindings in Meson PCIe controller. Signed-off-by: Yue Wang Signed-off-by: Hanjie Lin --- .../devicetree/bindings/pci/amlogic,meson-pcie.txt | 63 ++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt diff --git a/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt b/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt new file mode 100644 index 0000000..8a831d1 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt @@ -0,0 +1,63 @@ +Amlogic Meson AXG DWC PCIE SoC controller + +Amlogic Meson PCIe host controller is based on the Synopsys DesignWare PCI core. +It shares common functions with the PCIe DesignWare core driver and +inherits common properties defined in +Documentation/devicetree/bindings/pci/designware-pci.txt. + +Additional properties are described here: + +Required properties: +- compatible: + should contain "amlogic,axg-pcie" to identify the core. +- reg: + Should contain the configuration address space. +- reg-names: Must be + - "elbi" External local bus interface registers + - "cfg" Meson specific registers + - "config" PCIe configuration space +- reset-gpios: The GPIO to generate PCIe PERST# assert and deassert signal. +- clocks: Must contain an entry for each entry in clock-names. +- clock-names: Must include the following entries: + - "pclk" PCIe GEN 100M PLL clock + - "port" PCIe_x(A or B) RC clock gate + - "general" PCIe Phy clock + - "mipi" PCIe_x(A or B) 100M ref clock gate +- resets: phandle to the reset lines. +- reset-names: must contain "phy" and "peripheral" + - "port" Port A or B reset + - "apb" APB reset + +Example configuration: + + pcie: pcie@f9800000 { + compatible = "amlogic,axg-pcie", "snps,dw-pcie"; + reg = <0x0 0xf9800000 0x0 0x400000 + 0x0 0xff646000 0x0 0x2000 + 0x0 0xf9f00000 0x0 0x100000>; + reg-names = "elbi", "cfg", "config"; + reset-gpios = <&gpio GPIOX_19 GPIO_ACTIVE_HIGH>; + interrupts = ; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0 0 0 0 &gic GIC_SPI 179 IRQ_TYPE_EDGE_RISING>; + bus-range = <0x0 0xff>; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + phys = <&pcie_phy>; + ranges = <0x82000000 0 0 0x0 0xf9c00000 0 0x00300000>; + + clocks = <&clkc CLKID_USB + &clkc CLKID_MIPI_ENABLE + &clkc CLKID_PCIE_A + &clkc CLKID_PCIE_CML_EN0>; + clock-names = "general", + "mipi", + "pclk", + "port"; + resets = <&reset RESET_PCIE_A>, + <&reset RESET_PCIE_APB>; + reset-names = "port", + "apb"; + };