From patchwork Fri Oct 26 09:52:40 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Ma X-Patchwork-Id: 10657167 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 28B7313A4 for ; Fri, 26 Oct 2018 09:59:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 14AEE2C4B0 for ; Fri, 26 Oct 2018 09:59:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0894D2C4BF; Fri, 26 Oct 2018 09:59:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7F1162C4B0 for ; Fri, 26 Oct 2018 09:59:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=Swddaz54JqJlv8QFGFOnf70QZlPZgVEbdzW5RJoXW3E=; b=qiL7xcxoprqDvbjXBVwPBrwGSe hXReygY88q4UDlIroj08khpehxyxg7kVH3/lVkda9JbECWiZkeaH9NyiH8l0zgFEF+9QM1pRV+a/M u7ZeMmwX61wFwBDrFibelx3GvZ7/HumDv1EOWleYc2X1sTuqsFMrm69rnFvKXgBJ/aNckMBDb4Z9w 4Cof81/fukRKlv/olnMd/Jra1f+lC7pp57p+lACZoT/A2BgkhMAxgLj/AhSQktn7p+w8ZPfH3r9cM u7BBfgMiv7iDtpYJ+lwz7e0OT61zV5Us3bQZ7nC5yY59+FAV5BK8Mbe2FnyoM4z6uSqu6mom2BKyz K0M5R4xA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gFytk-0004LR-Et; Fri, 26 Oct 2018 09:59:20 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gFyrW-0003UK-QN for linux-arm-kernel@lists.infradead.org; Fri, 26 Oct 2018 09:57:05 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 5E67C1A00D2; Fri, 26 Oct 2018 11:56:56 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id ADF181A0097; Fri, 26 Oct 2018 11:56:49 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 5A56640323; Fri, 26 Oct 2018 17:56:41 +0800 (SGT) From: Peng Ma To: vkoul@kernel.org Subject: [PATCH 7/7] dt-bindings: fsl-qdma: Add NXP Layerscpae qDMA controller bindings Date: Fri, 26 Oct 2018 17:52:40 +0800 Message-Id: <20181026095240.33668-7-peng.ma@nxp.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20181026095240.33668-1-peng.ma@nxp.com> References: <20181026095240.33668-1-peng.ma@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181026_025703_152496_04EF417D X-CRM114-Status: UNSURE ( 9.80 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, Wen He , linuxppc-dev@lists.ozlabs.org, Peng Ma , linux-kernel@vger.kernel.org, leoyang.li@nxp.com, zw@zh-kernel.org, robh+dt@kernel.org, dmaengine@vger.kernel.org, dan.j.williams@intel.com, shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Document the devicetree bindings for NXP Layerscape qDMA controller which could be found on NXP QorIQ Layerscape SoCs. Signed-off-by: Wen He Signed-off-by: Peng Ma Reviewed-by: Rob Herring --- change in v10: - no Documentation/devicetree/bindings/dma/fsl-qdma.txt | 57 ++++++++++++++++++++ 1 files changed, 57 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/dma/fsl-qdma.txt diff --git a/Documentation/devicetree/bindings/dma/fsl-qdma.txt b/Documentation/devicetree/bindings/dma/fsl-qdma.txt new file mode 100644 index 0000000..6a0ff90 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/fsl-qdma.txt @@ -0,0 +1,57 @@ +NXP Layerscape SoC qDMA Controller +================================== + +This device follows the generic DMA bindings defined in dma/dma.txt. + +Required properties: + +- compatible: Must be one of + "fsl,ls1021a-qdma": for LS1021A Board + "fsl,ls1043a-qdma": for ls1043A Board + "fsl,ls1046a-qdma": for ls1046A Board +- reg: Should contain the register's base address and length. +- interrupts: Should contain a reference to the interrupt used by this + device. +- interrupt-names: Should contain interrupt names: + "qdma-queue0": the block0 interrupt + "qdma-queue1": the block1 interrupt + "qdma-queue2": the block2 interrupt + "qdma-queue3": the block3 interrupt + "qdma-error": the error interrupt +- fsl,dma-queues: Should contain number of queues supported. +- dma-channels: Number of DMA channels supported +- block-number: the virtual block number +- block-offset: the offset of different virtual block +- status-sizes: status queue size of per virtual block +- queue-sizes: command queue size of per virtual block, the size number + based on queues + +Optional properties: + +- dma-channels: Number of DMA channels supported by the controller. +- big-endian: If present registers and hardware scatter/gather descriptors + of the qDMA are implemented in big endian mode, otherwise in little + mode. + +Examples: + + qdma: dma-controller@8390000 { + compatible = "fsl,ls1021a-qdma"; + reg = <0x0 0x8388000 0x0 0x1000>, /* Controller regs */ + <0x0 0x8389000 0x0 0x1000>, /* Status regs */ + <0x0 0x838a000 0x0 0x2000>; /* Block regs */ + interrupts = , + , + ; + interrupt-names = "qdma-error", + "qdma-queue0", "qdma-queue1"; + dma-channels = <8>; + block-number = <2>; + block-offset = <0x1000>; + fsl,dma-queues = <2>; + status-sizes = <64>; + queue-sizes = <64 64>; + big-endian; + }; + +DMA clients must use the format described in dma/dma.txt file.