From patchwork Mon May 18 09:55:18 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Duc Dang X-Patchwork-Id: 473311 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3B78614012C for ; Mon, 18 May 2015 19:55:56 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753509AbbERJzs (ORCPT ); Mon, 18 May 2015 05:55:48 -0400 Received: from exprod5og114.obsmtp.com ([64.18.0.28]:39976 "EHLO mail-pa0-f53.google.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753360AbbERJzi (ORCPT ); Mon, 18 May 2015 05:55:38 -0400 Received: from mail-pa0-f53.google.com ([209.85.220.53]) (using TLSv1) by exprod5ob114.postini.com ([64.18.4.12]) with SMTP ID DSNKVVm3GY2Izwt6Ja+uSSadjBqLBa+J3KNk@postini.com; Mon, 18 May 2015 02:55:38 PDT Received: by pacwv17 with SMTP id wv17so145246892pac.2 for ; Mon, 18 May 2015 02:55:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=xOh9mLw5UwimjznTvc3UkjVArh0DqGasKoYmrFxAYxU=; b=VHWUJfxMa6u288PDNY32H97P+FruVR8u7vxv7i333UujBdFd/fKDrkCQXheTSimzap 6fnHU8p3o+krKCp2qEwsZqVihukPF7/37ZNq0X5BjhFOYii6nPkC4qDNPFLDj4C1C85U oXXzxcC7kI7AooIjSOBKDx7DifWuIeN+FdE76NadgPEvN3pjCD5KnBsiB6p5dgMS+7vN tCOc/mDTa5jy81TF1dvRhM5NcW0G2S70Ah1c4u/XrJKF3yuAqA7PZoH1UcJWTfspzua+ OP/bR+MCB444rjTy+7pnRVCaFpy+LvN6r8qa3+fXV/F4y7T9ZxDNNN5SSYQskJXgJTq5 QJOQ== X-Gm-Message-State: ALoCoQnZ9MKCc+K06HEj8/H1HGtRVV60qryGlBUKDfnfV8Q/V4E9q4yQHh0jgYuGbXjRhGn2fFcdGPNNghyB/gylj7yiij9+RTLXxyhUJN9sHiS58RDE5+6dPiRflk58A1iAVbAn6IiHiH4PrFgX3+BTDiLawGd2sQ== X-Received: by 10.68.102.1 with SMTP id fk1mr43266454pbb.56.1431942937342; Mon, 18 May 2015 02:55:37 -0700 (PDT) X-Received: by 10.68.102.1 with SMTP id fk1mr43266439pbb.56.1431942937244; Mon, 18 May 2015 02:55:37 -0700 (PDT) Received: from dhdang-Precision-WorkStation-T3400.amcc.com (67-207-112-226.static.wiline.com. [67.207.112.226]) by mx.google.com with ESMTPSA id f1sm9520939pdp.24.2015.05.18.02.55.35 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 18 May 2015 02:55:36 -0700 (PDT) From: Duc Dang To: Bjorn Helgaas , Arnd Bergmann , Grant Likely , Liviu Dudau , Marc Zyngier Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Tanmay Inamdar , Loc Ho , Feng Kan , Duc Dang Subject: [PATCH v7 1/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Date: Mon, 18 May 2015 02:55:18 -0700 Message-Id: <4422f356934b17a2086889b642bde4d441814569.1431940313.git.dhdang@apm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: <20150422135002.1b407b98@why.wild-wind.fr.eu.org> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Gene v1 PCIe MSI controller block provides PCIE MSI functionality for 5 X-Gene v1 PCIE ports The driver for this binding is under 'drivers/pci/host/pci-xgene-msi.c' Signed-off-by: Duc Dang Signed-off-by: Tanmay Inamdar --- .../devicetree/bindings/pci/xgene-pci-msi.txt | 68 ++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/xgene-pci-msi.txt diff --git a/Documentation/devicetree/bindings/pci/xgene-pci-msi.txt b/Documentation/devicetree/bindings/pci/xgene-pci-msi.txt new file mode 100644 index 0000000..36d881c --- /dev/null +++ b/Documentation/devicetree/bindings/pci/xgene-pci-msi.txt @@ -0,0 +1,68 @@ +* AppliedMicro X-Gene v1 PCIe MSI controller + +Required properties: + +- compatible: should be "apm,xgene1-msi" to identify + X-Gene v1 PCIe MSI controller block. +- msi-controller: indicates that this is X-Gene v1 PCIe MSI controller node +- reg: physical base address (0x79000000) and length (0x900000) for controller + registers. These registers include the MSI termination address and data + registers as well as the MSI interrupt status registers. +- reg-names: not required +- interrupts: A list of 16 interrupt outputs of the controller, starting from + interrupt number 0x10 to 0x1f. +- interrupt-names: not required + +Each PCIe node needs to have property msi-parent that points to msi controller node + +Examples: + +SoC DTSI: + + + MSI node: + msi@79000000 { + compatible = "apm,xgene1-msi"; + msi-controller; + reg = <0x00 0x79000000 0x0 0x900000>; + interrupts = <0x0 0x10 0x4> + <0x0 0x11 0x4> + <0x0 0x12 0x4> + <0x0 0x13 0x4> + <0x0 0x14 0x4> + <0x0 0x15 0x4> + <0x0 0x16 0x4> + <0x0 0x17 0x4> + <0x0 0x18 0x4> + <0x0 0x19 0x4> + <0x0 0x1a 0x4> + <0x0 0x1b 0x4> + <0x0 0x1c 0x4> + <0x0 0x1d 0x4> + <0x0 0x1e 0x4> + <0x0 0x1f 0x4>; + }; + + + PCIe controller node with msi-parent property pointing to MSI node: + pcie0: pcie@1f2b0000 { + status = "disabled"; + device_type = "pci"; + compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + reg = < 0x00 0x1f2b0000 0x0 0x00010000 /* Controller registers */ + 0xe0 0xd0000000 0x0 0x00040000>; /* PCI config space */ + reg-names = "csr", "cfg"; + ranges = <0x01000000 0x00 0x00000000 0xe0 0x10000000 0x00 0x00010000 /* io */ + 0x02000000 0x00 0x80000000 0xe1 0x80000000 0x00 0x80000000>; /* mem */ + dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000 + 0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>; + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xc2 0x1 + 0x0 0x0 0x0 0x2 &gic 0x0 0xc3 0x1 + 0x0 0x0 0x0 0x3 &gic 0x0 0xc4 0x1 + 0x0 0x0 0x0 0x4 &gic 0x0 0xc5 0x1>; + dma-coherent; + clocks = <&pcie0clk 0>; + msi-parent= <&msi>; + };