From patchwork Tue Mar 6 02:44:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 10260561 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EF10960211 for ; Tue, 6 Mar 2018 02:50:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E03B328C72 for ; Tue, 6 Mar 2018 02:50:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D4D9928CF7; Tue, 6 Mar 2018 02:50:21 +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=-5.4 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_WEB autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 71BA728C72 for ; Tue, 6 Mar 2018 02:50:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753183AbeCFCuU (ORCPT ); Mon, 5 Mar 2018 21:50:20 -0500 Received: from lucky1.263xmail.com ([211.157.147.134]:37657 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752910AbeCFCuT (ORCPT ); Mon, 5 Mar 2018 21:50:19 -0500 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.232]) by lucky1.263xmail.com (Postfix) with ESMTP id 158048ED4; Tue, 6 Mar 2018 10:50:16 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from localhost.localdomain (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTPA id 646113DD; Tue, 6 Mar 2018 10:50:10 +0800 (CST) X-RL-SENDER: shawn.lin@rock-chips.com X-FST-TO: bhelgaas@google.com X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: shawn.lin@rock-chips.com X-UNIQUE-TAG: <1bf5139175c85c20cf598e72201ae0a9> X-ATTACHMENT-NUM: 0 X-SENDER: lintao@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 21713LE5EZ7; Tue, 06 Mar 2018 10:50:13 +0800 (CST) From: Shawn Lin To: Bjorn Helgaas , Lorenzo Pieralisi Cc: Rob Herring , devicetree@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-pci@vger.kernel.org, Shawn Lin Subject: [PATCH v3 6/6] dt-bindings: PCI: rockchip: Add DT bindings for Rockchip PCIe endpoint controller Date: Tue, 6 Mar 2018 10:44:16 +0800 Message-Id: <1520304256-235121-1-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1520304173-231081-1-git-send-email-shawn.lin@rock-chips.com> References: <1520304173-231081-1-git-send-email-shawn.lin@rock-chips.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch documents the DT bindings for the Rockchip PCIe controller when configured in endpoint mode. Signed-off-by: Shawn Lin Reviewed-by: Rob Herring --- Changes in v3: None Changes in v2: None .../devicetree/bindings/pci/rockchip-pcie-ep.txt | 62 ++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/rockchip-pcie-ep.txt diff --git a/Documentation/devicetree/bindings/pci/rockchip-pcie-ep.txt b/Documentation/devicetree/bindings/pci/rockchip-pcie-ep.txt new file mode 100644 index 0000000..77846730 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/rockchip-pcie-ep.txt @@ -0,0 +1,62 @@ +* Rockchip AXI PCIe Endpoint Controller DT description + +Required properties: +- compatible: Should contain "rockchip,rk3399-pcie-ep" +- reg: Two register ranges as listed in the reg-names property +- reg-names: Must include the following names + - "apb-base" + - "mem-base" +- clocks: Must contain an entry for each entry in clock-names. + See ../clocks/clock-bindings.txt for details. +- clock-names: Must include the following entries: + - "aclk" + - "aclk-perf" + - "hclk" + - "pm" +- resets: Must contain seven entries for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names: Must include the following names + - "core" + - "mgmt" + - "mgmt-sticky" + - "pipe" + - "pm" + - "aclk" + - "pclk" +- pinctrl-names : The pin control state names +- pinctrl-0: The "default" pinctrl state +- phys: Must contain an phandle to a PHY for each entry in phy-names. +- phy-names: Must include 4 entries for all 4 lanes even if some of + them won't be used for your cases. Entries are of the form "pcie-phy-N": + where N ranges from 0 to 3. + (see example below and you MUST also refer to ../phy/rockchip-pcie-phy.txt + for changing the #phy-cells of phy node to support it) +- rockchip,max-outbound-regions: Maximum number of outbound regions + +Optional Property: +- num-lanes: number of lanes to use +- max-functions: Maximum number of functions that can be configured (default 1). + +pcie0-ep: pcie@f8000000 { + compatible = "rockchip,rk3399-pcie-ep"; + #address-cells = <3>; + #size-cells = <2>; + rockchip,max-outbound-regions = <16>; + clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>, + <&cru PCLK_PCIE>, <&cru SCLK_PCIE_PM>; + clock-names = "aclk", "aclk-perf", + "hclk", "pm"; + max-functions = /bits/ 8 <8>; + num-lanes = <4>; + reg = <0x0 0xfd000000 0x0 0x1000000>, <0x0 0x80000000 0x0 0x20000>; + reg-names = "apb-base", "mem-base"; + resets = <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>, + <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE> , + <&cru SRST_PCIE_PM>, <&cru SRST_P_PCIE>, <&cru SRST_A_PCIE>; + reset-names = "core", "mgmt", "mgmt-sticky", "pipe", + "pm", "pclk", "aclk"; + phys = <&pcie_phy 0>, <&pcie_phy 1>, <&pcie_phy 2>, <&pcie_phy 3>; + phy-names = "pcie-phy-0", "pcie-phy-1", "pcie-phy-2", "pcie-phy-3"; + pinctrl-names = "default"; + pinctrl-0 = <&pcie_clkreq>; +};