From patchwork Fri Feb 28 20:42:35 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suman Anna X-Patchwork-Id: 325344 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id BE6332C0078 for ; Sat, 1 Mar 2014 07:44:28 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752166AbaB1Uo2 (ORCPT ); Fri, 28 Feb 2014 15:44:28 -0500 Received: from devils.ext.ti.com ([198.47.26.153]:57078 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751712AbaB1Uo1 (ORCPT ); Fri, 28 Feb 2014 15:44:27 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id s1SKhuot014753; Fri, 28 Feb 2014 14:43:56 -0600 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id s1SKhu5C029045; Fri, 28 Feb 2014 14:43:56 -0600 Received: from dflp33.itg.ti.com (10.64.6.16) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.174.1; Fri, 28 Feb 2014 14:43:55 -0600 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id s1SKhtr6015582; Fri, 28 Feb 2014 14:43:55 -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 s1SKhtt09246; Fri, 28 Feb 2014 14:43:55 -0600 (CST) From: Suman Anna To: Joerg Roedel , Tony Lindgren CC: Florian Vaussard , Laurent Pinchart , , , , , Suman Anna Subject: [PATCHv3 04/13] Documentation: dt: add OMAP iommu bindings Date: Fri, 28 Feb 2014 14:42:35 -0600 Message-ID: <1393620164-14633-5-git-send-email-s-anna@ti.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1393620164-14633-1-git-send-email-s-anna@ti.com> References: <1393620164-14633-1-git-send-email-s-anna@ti.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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 | 26 ++++++++++++++++++++++ 1 file changed, 26 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..42531dc --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt @@ -0,0 +1,26 @@ +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 + +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>; + };