From patchwork Thu Sep 6 09:40:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 10590381 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-2.web.codeaurora.org (Postfix) with ESMTP id 828935A4 for ; Thu, 6 Sep 2018 09:40:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 86D5D2A3AB for ; Thu, 6 Sep 2018 09:40:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 78F502A40A; Thu, 6 Sep 2018 09:40:58 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI 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 0E9D32A3AB for ; Thu, 6 Sep 2018 09:40:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727815AbeIFOPV (ORCPT ); Thu, 6 Sep 2018 10:15:21 -0400 Received: from mx.socionext.com ([202.248.49.38]:11897 "EHLO mx.socionext.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725978AbeIFOPU (ORCPT ); Thu, 6 Sep 2018 10:15:20 -0400 Received: from unknown (HELO iyokan-ex.css.socionext.com) ([172.31.9.54]) by mx.socionext.com with ESMTP; 06 Sep 2018 18:40:41 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by iyokan-ex.css.socionext.com (Postfix) with ESMTP id D90EC600AA; Thu, 6 Sep 2018 18:40:41 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Thu, 6 Sep 2018 18:40:41 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id 2EA5C1A03A2; Thu, 6 Sep 2018 18:40:41 +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 v2 1/2] dt-bindings: PCI: add UniPhier PCIe host controller description Date: Thu, 6 Sep 2018 18:40:31 +0900 Message-Id: <1536226832-5089-2-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1536226832-5089-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1536226832-5089-1-git-send-email-hayashi.kunihiko@socionext.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 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 Reviewed-by: Rob Herring --- .../devicetree/bindings/pci/uniphier-pcie.txt | 78 ++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/uniphier-pcie.txt diff --git a/Documentation/devicetree/bindings/pci/uniphier-pcie.txt b/Documentation/devicetree/bindings/pci/uniphier-pcie.txt new file mode 100644 index 0000000..a34e167 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/uniphier-pcie.txt @@ -0,0 +1,78 @@ +Socionext UniPhier PCIe host controller bindings + +This describes the devicetree bindings for PCIe host controller implemented +on Socionext UniPhier SoCs. + +UniPhier 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-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>; + }; + };