From patchwork Thu Mar 19 07:54:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 11446645 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8229B139A for ; Thu, 19 Mar 2020 07:54:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C27A20724 for ; Thu, 19 Mar 2020 07:54:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726845AbgCSHyR (ORCPT ); Thu, 19 Mar 2020 03:54:17 -0400 Received: from mx.socionext.com ([202.248.49.38]:23155 "EHLO mx.socionext.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726796AbgCSHyQ (ORCPT ); Thu, 19 Mar 2020 03:54:16 -0400 Received: from unknown (HELO iyokan-ex.css.socionext.com) ([172.31.9.54]) by mx.socionext.com with ESMTP; 19 Mar 2020 16:54:14 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by iyokan-ex.css.socionext.com (Postfix) with ESMTP id 69BDB60057; Thu, 19 Mar 2020 16:54:14 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Thu, 19 Mar 2020 16:54:14 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id A1EEC1A0E67; Thu, 19 Mar 2020 16:54:13 +0900 (JST) From: Kunihiko Hayashi To: Bjorn Helgaas , Lorenzo Pieralisi , Andrew Murray , Masahiro Yamada , Rob Herring , Mark Rutland 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 endpoint controller description Date: Thu, 19 Mar 2020 16:54:08 +0900 Message-Id: <1584604449-13461-2-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1584604449-13461-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1584604449-13461-1-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 Add DT bindings for PCIe controller implemented in UniPhier SoCs when configured in endpoint mode. This controller is based on the DesignWare PCIe core. Signed-off-by: Kunihiko Hayashi Reviewed-by: Rob Herring --- .../devicetree/bindings/pci/uniphier-pcie-ep.txt | 47 ++++++++++++++++++++++ MAINTAINERS | 2 +- 2 files changed, 48 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/pci/uniphier-pcie-ep.txt diff --git a/Documentation/devicetree/bindings/pci/uniphier-pcie-ep.txt b/Documentation/devicetree/bindings/pci/uniphier-pcie-ep.txt new file mode 100644 index 0000000..56cb891 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/uniphier-pcie-ep.txt @@ -0,0 +1,47 @@ +Socionext UniPhier PCIe endpoint controller bindings + +This describes the devicetree bindings for PCIe endpoint controller +implemented on Socionext UniPhier SoCs. + +UniPhier PCIe endpoint 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-pro5-pcie-ep" for Pro5 SoC +- 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 + "dbi2" - controller configuration registers for shadow + "link" - SoC-specific glue layer registers + "addr_space" - PCIe configuration space +- clocks: A phandle to the clock gate for PCIe glue layer including + the endpoint controller. +- resets: A phandle to the reset line for PCIe glue layer including + the endpoint controller. + +Optional properties: +- phys: A phandle to generic PCIe PHY. According to the phy-names, appropriate + phys are required. +- phy-names: Must be "pcie-phy". + +Example: + + pcie_ep: pcie-ep@66000000 { + compatible = "socionext,uniphier-pro5-pcie-ep", + "snps,dw-pcie-ep"; + status = "disabled"; + reg-names = "dbi", "dbi2", "link", "addr_space"; + reg = <0x66000000 0x1000>, <0x66001000 0x1000>, + <0x66010000 0x10000>, <0x67000000 0x400000>; + clocks = <&sys_clk 24>; + resets = <&sys_rst 24>; + num-ib-windows = <16>; + num-ob-windows = <16>; + num-lanes = <4>; + phy-names = "pcie-phy"; + phys = <&pcie_phy>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index be44251..9ae5237 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13115,7 +13115,7 @@ PCIE DRIVER FOR SOCIONEXT UNIPHIER M: Kunihiko Hayashi L: linux-pci@vger.kernel.org S: Maintained -F: Documentation/devicetree/bindings/pci/uniphier-pcie.txt +F: Documentation/devicetree/bindings/pci/uniphier-pcie*.txt F: drivers/pci/controller/dwc/pcie-uniphier.c PCIE DRIVER FOR ST SPEAR13XX