From patchwork Fri Feb 21 07:52:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 11395743 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DAD36924 for ; Fri, 21 Feb 2020 07:52:57 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A8C8024656 for ; Fri, 21 Feb 2020 07:52:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="DkEft5nz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A8C8024656 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=socionext.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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=b88yzuxbHThYmI6yXzrL7BPz/iTmkElV+waWnhAkEwo=; b=DkEft5nzM6oMcpyMr5e3iWLH6U lW/dfG9skl0UzsLDwQg+AT15lPkjTnIf5BkJVWlR9gHWZu1b7lW7bzJncUofl4UmHYn6ubCV+ECMl 40sQCJJBUgTTQommWOn3CspH7ck9BFjycbv+nmSx2E1oRH+Bup3WTmMgfXEvJjvz52cCd53VfSd+2 A8XMi3IoX5JA3Z+jCC4Yi67SZEV73oE56daaeEZOhSqofWRVMO9uLLaTD25U8h8jTrpYO5PMnN6r0 USLCUrjo5sZX14KjPEIEYXwFOPJlSmOiRZcSK9Cy+Kk0dNYvD2lMqbB9aeRmF9RmO/k0b3clMXuuD oCdzze2g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j537I-0005bJ-Oc; Fri, 21 Feb 2020 07:52:56 +0000 Received: from mx.socionext.com ([202.248.49.38]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j5370-0005NG-PN for linux-arm-kernel@lists.infradead.org; Fri, 21 Feb 2020 07:52:40 +0000 Received: from unknown (HELO kinkan-ex.css.socionext.com) ([172.31.9.52]) by mx.socionext.com with ESMTP; 21 Feb 2020 16:52:37 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by kinkan-ex.css.socionext.com (Postfix) with ESMTP id 04C8D18008C; Fri, 21 Feb 2020 16:52:38 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Fri, 21 Feb 2020 16:52:37 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id 45B2F1A01BB; Fri, 21 Feb 2020 16:52:37 +0900 (JST) From: Kunihiko Hayashi To: Vinod Koul , Dan Williams , Masahiro Yamada , Rob Herring , Mark Rutland Subject: [RESEND PATCH v4 1/2] dt-bindings: dmaengine: Add UniPhier external DMA controller bindings Date: Fri, 21 Feb 2020 16:52:29 +0900 Message-Id: <1582271550-3403-2-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1582271550-3403-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1582271550-3403-1-git-send-email-hayashi.kunihiko@socionext.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200220_235238_933748_FDA1911B X-CRM114-Status: GOOD ( 16.39 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [202.248.49.38 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Kunihiko Hayashi , Masami Hiramatsu , linux-kernel@vger.kernel.org, Jassi Brar , dmaengine@vger.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 Add devicetree binding documentation for external DMA controller implemented on Socionext UniPhier SOCs. Signed-off-by: Kunihiko Hayashi Reviewed-by: Rob Herring --- .../bindings/dma/socionext,uniphier-xdmac.yaml | 63 ++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/socionext,uniphier-xdmac.yaml diff --git a/Documentation/devicetree/bindings/dma/socionext,uniphier-xdmac.yaml b/Documentation/devicetree/bindings/dma/socionext,uniphier-xdmac.yaml new file mode 100644 index 00000000..86cfb59 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/socionext,uniphier-xdmac.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/socionext,uniphier-xdmac.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Socionext UniPhier external DMA controller + +description: | + This describes the devicetree bindings for an external DMA engine to perform + memory-to-memory or peripheral-to-memory data transfer capable of supporting + 16 channels, implemented in Socionext UniPhier SoCs. + +maintainers: + - Kunihiko Hayashi + +allOf: + - $ref: "dma-controller.yaml#" + +properties: + compatible: + const: socionext,uniphier-xdmac + + reg: + items: + - description: XDMAC base register region (offset and length) + - description: XDMAC extension register region (offset and length) + + interrupts: + maxItems: 1 + + "#dma-cells": + const: 2 + description: | + DMA request from clients consists of 2 cells: + 1. Channel index + 2. Transfer request factor number, If no transfer factor, use 0. + The number is SoC-specific, and this should be specified with + relation to the device to use the DMA controller. + + dma-channels: + minimum: 1 + maximum: 16 + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + - "#dma-cells" + +examples: + - | + xdmac: dma-controller@5fc10000 { + compatible = "socionext,uniphier-xdmac"; + reg = <0x5fc10000 0x1000>, <0x5fc20000 0x800>; + interrupts = <0 188 4>; + #dma-cells = <2>; + dma-channels = <16>; + }; + +...