From patchwork Thu Feb 13 18:15:34 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suman Anna X-Patchwork-Id: 3646781 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 03E38BF13A for ; Thu, 13 Feb 2014 18:17:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2D6FE2011D for ; Thu, 13 Feb 2014 18:17:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3949D20122 for ; Thu, 13 Feb 2014 18:17:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752595AbaBMSR3 (ORCPT ); Thu, 13 Feb 2014 13:17:29 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:50105 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752562AbaBMSR3 (ORCPT ); Thu, 13 Feb 2014 13:17:29 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id s1DIGSJx015687; Thu, 13 Feb 2014 12:16:28 -0600 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id s1DIGSxW016757; Thu, 13 Feb 2014 12:16:28 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.3.174.1; Thu, 13 Feb 2014 12:16:28 -0600 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id s1DIGRPa031433; Thu, 13 Feb 2014 12:16:28 -0600 Received: from localhost (irmo.am.dhcp.ti.com [128.247.71.175]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id s1DIGRt01985; Thu, 13 Feb 2014 12:16:27 -0600 (CST) From: Suman Anna To: Joerg Roedel , Tony Lindgren CC: Florian Vaussard , Laurent Pinchart , , , , , Suman Anna Subject: [PATCHv2 03/16] Documentation: dt: add OMAP iommu bindings Date: Thu, 13 Feb 2014 12:15:34 -0600 Message-ID: <1392315347-32967-4-git-send-email-s-anna@ti.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1392315347-32967-1-git-send-email-s-anna@ti.com> References: <1392315347-32967-1-git-send-email-s-anna@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Florian Vaussard This patch adds the iommu bindings for all OMAP2+ SoCs. Apart from the standard bindings used by OMAP peripherals, this patch uses a 'dma-window' (already used by Tegra SMMU) and adds two OMAP custom bindings - 'ti,#tlb-entries' and 'ti,iommu-bus-err-back'. Signed-off-by: Florian Vaussard [s-anna@ti.com: split bindings document, add dra7 and bus error back] Signed-off-by: Suman Anna --- .../devicetree/bindings/iommu/ti,omap-iommu.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt diff --git a/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt new file mode 100644 index 0000000..116492d --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt @@ -0,0 +1,28 @@ +OMAP2+ IOMMU + +Required properties: +- compatible : Should be one of, + "ti,omap2-iommu" for OMAP2/OMAP3 IOMMU instances + "ti,omap4-iommu" for OMAP4/OMAP5 IOMMU instances + "ti,dra7-iommu" for DRA7xx IOMMU instances +- ti,hwmods : Name of the hwmod associated with the IOMMU instance +- reg : Address space for the configuration registers +- interrupts : Interrupt specifier for the IOMMU instance +- dma-window : IOVA start address and length + +Optional properties: +- ti,#tlb-entries : Number of entries in the translation look-aside buffer. + Should be either 8 or 32 (default: 32) +- ti,iommu-bus-err-back : Indicates the IOMMU instance supports throwing + back a bus error response on MMU faults. + +Example: + /* OMAP3 ISP MMU */ + mmu_isp: mmu@480bd400 { + compatible = "ti,omap2-iommu"; + reg = <0x480bd400 0x80>; + interrupts = <24>; + ti,hwmods = "mmu_isp"; + ti,#tlb-entries = <8>; + dma-window = <0 0xfffff000>; + };