From patchwork Wed Sep 5 02:32:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 145972 Delivered-To: patch@linaro.org Received: by 2002:a2e:1648:0:0:0:0:0 with SMTP id 8-v6csp4387164ljw; Tue, 4 Sep 2018 19:32:28 -0700 (PDT) X-Google-Smtp-Source: ANB0VdboQ0WG1nIZaGbAaAFdK7iZPTUCdQS6677TIzh2Vq2JQwrDgWCzwLYM+0bQ7XPAxLzpa2x8 X-Received: by 2002:a63:8a41:: with SMTP id y62-v6mr32691564pgd.278.1536114748762; Tue, 04 Sep 2018 19:32:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1536114748; cv=none; d=google.com; s=arc-20160816; b=R9RI0pBBSMLadgIpEPB+KOHRkzQid1XB/W2XclGAjMc+Nk1FOU0GpvblBeHhTSNfBh S16d3fHqKiIoF/PBABAXAggR7I9Jej5DxTeUBEPJokS3FKHOwfphsCft+vquaQJzDis2 zNvM32HNyiCmI6CiV/9ETg34CzT3gsfdHU6aI7IAaYONQgd4bIGL1z78txPUdVot9eJ4 dS4Wmc+7Lm7NLVRxD0HFJqQnu/pJvjTmuwAuJUXSWe6dJ4KcStU3v6J7fDhyP/MC5jcd 8URIphUhT2Midih15rBOAlKurpUmfWCtLkQPgxiQYBCC9P6pCGoRIRIJbCY5NTchT/05 tDsA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=ic48PefViYZSeeZpTMRO7Zxusp1Y4566xBJHSttXSD0=; b=m4k9qZn7HGlOK88O/Z5Ce//tNX7xo5oFRMzjCczsQlS3K0Gk0P6D67Sc81sxzAGfRq 40ZrrK6LSdYh+gjnzaf2gRgwA/jk7fZQ2MuwcZGbT5PnMtqvYqqxZLV7wzhBizN1hNJr gjr9THqE+XcaCebx/zVAFz61Vj8W490hWB+DGBNlQZrMR+sIPPQZ4AkD+lhmOao7PAwu l2v/5elK5JXkol3s1+Ty520UObjDGbOe34roN/MYApby1cEV2eFQvTp+Iqe2LJetRI1Y KESvj9eQ2vJsE942hzgZOjySTRr8oFoPFM5S0Dd037XLZdLetIBfosB38DwDjvr1djZZ vmZw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id z187-v6si601470pgd.2.2018.09.04.19.32.28; Tue, 04 Sep 2018 19:32:28 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727100AbeIEHAP (ORCPT + 32 others); Wed, 5 Sep 2018 03:00:15 -0400 Received: from mx.socionext.com ([202.248.49.38]:48617 "EHLO mx.socionext.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725939AbeIEHAP (ORCPT ); Wed, 5 Sep 2018 03:00:15 -0400 Received: from unknown (HELO kinkan-ex.css.socionext.com) ([172.31.9.52]) by mx.socionext.com with ESMTP; 05 Sep 2018 11:32:20 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by kinkan-ex.css.socionext.com (Postfix) with ESMTP id 8822D1800E0; Wed, 5 Sep 2018 11:32:20 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Wed, 5 Sep 2018 11:32:20 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id 0AFED1A04D8; Wed, 5 Sep 2018 11:32:20 +0900 (JST) From: Kunihiko Hayashi To: Lorenzo Pieralisi , Bjorn Helgaas , Rob Herring , Mark Rutland , Masahiro Yamada Cc: linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Masami Hiramatsu , Jassi Brar , Kunihiko Hayashi Subject: [PATCH 1/2] dt-bindings: pci: add UniPhier PCIe host controller description Date: Wed, 5 Sep 2018 11:32:10 +0900 Message-Id: <1536114731-28630-2-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1536114731-28630-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1536114731-28630-1-git-send-email-hayashi.kunihiko@socionext.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add DT bindings for PCIe controller implemented in UniPhier SoCs when configured in Root Complex (host) mode. This controller is based on the Designware PCIe Core. Signed-off-by: Kunihiko Hayashi --- .../devicetree/bindings/pci/uniphier-pcie.txt | 78 ++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/uniphier-pcie.txt -- 2.7.4 diff --git a/Documentation/devicetree/bindings/pci/uniphier-pcie.txt b/Documentation/devicetree/bindings/pci/uniphier-pcie.txt new file mode 100644 index 0000000..ea63f78 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/uniphier-pcie.txt @@ -0,0 +1,78 @@ +Socionext UniPhier PCI-express host controller bindings + +This describes the devicetree bindings for PCI-express host controller +implemented on Socionext UniPhier SoCs. + +UniPhier PCI-express 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-pcie.txt. + +Required properties: +- compatible: Should be "socionext,uniphier-pcie". +- reg: Specifies offset and length of the register set for the device. + According to the reg-names, appropriate register sets are required. +- reg-names: Must include the following entries: + "dbi" - controller configuration registers + "link" - SoC-specific glue layer registers + "config" - PCIe configuration space +- clocks: A phandle to the clock gate for PCIe glue layer including + the host controller. +- resets: A phandle to the reset line for PCIe glue layer including + the host controller. +- interrupts: A list of interrupt specifiers. According to the + interrupt-names, appropriate interrupts are required. +- interrupt-names: Must include the following entries: + "dma" - DMA interrupt + "msi" - MSI interrupt + "intx" - Legacy INTA/B/C/D interrupt + +Optional properties: +- phys: A phandle to generic PCIe PHY. According to the phy-names, appropriate + phys are required. +- phy-names: Must be "pcie-phy". + +Required sub-node: +- interrupt-controller: Specifies interrupt controller for legacy PCI + interrupts. The node name isn't important. + +Required properties for interrupt-controller: +- interrupt-controller: identifies the node as an interrupt controller. +- #interrupt-cells: specifies the number of cells needed to encode an + interrupt source. The value must be 1. + +Example: + + pcie: pcie@66000000 { + compatible = "socionext,uniphier-pcie", "snps,dw-pcie"; + status = "disabled"; + reg-names = "dbi", "link", "config"; + reg = <0x66000000 0x1000>, <0x66010000 0x10000>, + <0x2fff0000 0x10000>; + #address-cells = <3>; + #size-cells = <2>; + clocks = <&sys_clk 24>; + resets = <&sys_rst 24>; + num-lanes = <1>; + num-viewport = <1>; + bus-range = <0x0 0xff>; + device_type = "pci"; + ranges = + /* downstream I/O */ + <0x81000000 0 0x00000000 0x2ffe0000 0 0x00010000 + /* non-prefetchable memory */ + 0x82000000 0 0x00000000 0x20000000 0 0x0ffe0000>; + #interrupt-cells = <1>; + interrupt-names = "dma", "msi", "intx"; + interrupts = <0 224 4>, <0 225 4>, <0 226 4>; + interrupt-map-mask = <0 0 0 7>; + interrupt-map = <0 0 0 1 &pcie_intc 0>, /* INTA */ + <0 0 0 2 &pcie_intc 1>, /* INTB */ + <0 0 0 3 &pcie_intc 2>, /* INTC */ + <0 0 0 4 &pcie_intc 3>; /* INTD */ + + pcie_intc: interrupt-controller { + interrupt-controller; + #interrupt-cells = <1>; + }; + };