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: 3647111 Return-Path: X-Original-To: patchwork-linux-arm@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 D04A6BF13A for ; Thu, 13 Feb 2014 18:37:32 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E7F8420154 for ; Thu, 13 Feb 2014 18:37:31 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BC40D20149 for ; Thu, 13 Feb 2014 18:37:30 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WE1A3-0001jI-3r; Thu, 13 Feb 2014 18:37:23 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WE0s0-00081p-UF; Thu, 13 Feb 2014 18:18:44 +0000 Received: from bear.ext.ti.com ([192.94.94.41]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WE0qg-0007kc-NT for linux-arm-kernel@lists.infradead.org; Thu, 13 Feb 2014 18:17:27 +0000 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140213_131722_916712_E222FD8D X-CRM114-Status: GOOD ( 10.10 ) X-Spam-Score: -7.6 (-------) Cc: devicetree@vger.kernel.org, Suman Anna , iommu@lists.linux-foundation.org, Laurent Pinchart , Florian Vaussard , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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>; + };