From patchwork Sat Feb 17 19:08:29 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 10226381 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E9E0060467 for ; Sat, 17 Feb 2018 19:10:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D834228B57 for ; Sat, 17 Feb 2018 19:10:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CC2BA28B81; Sat, 17 Feb 2018 19:10:25 +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=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,UNPARSEABLE_RELAY 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 7145628B57 for ; Sat, 17 Feb 2018 19:10:25 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=rKIgLC1J7kaVlYRUnrTHZoPc5vtFfdn1fZnByz1/mWw=; b=oLBxBjkzKn3KrG vXoo8ASw6FvYRE8B0znhhf/SAZ1BM0Kvd5WJCPMHkMyh9ZHVow+Md6WB31VB/fP6Vurez0sg0jTEj PhB6I+8Ea33yWTc7wWb1o5+DC7zsNG6K7vFn2A365x6b/5DQTZB1de/uJaGojWjKCv2yozufW4xTD xLHIs5raoiv7ad70LDyQqITLACUoCrJBPo3ZF5aLWNBESWvsVxtQpIQW5f0qsIY2phKwW1Gk/pzjf WkGgIAbqhB92rpwPlZhgcZGkH+eQoU09woDhmQqZQCK2irAMo+9iKBHdbOm5lFpkOJA7GqWPDP0+M FdNZiVyVPC8nS5bgtUTw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1en7sG-0004F2-DA; Sat, 17 Feb 2018 19:10:16 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1en7qy-0003A5-2f; Sat, 17 Feb 2018 19:08:59 +0000 X-UUID: d445fd9e2c4b4d84b9def79fb296b6c0-20180218 Received: from mtkcas09.mediatek.inc [(172.21.101.178)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 285574658; Sun, 18 Feb 2018 03:08:35 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Sun, 18 Feb 2018 03:08:33 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Sun, 18 Feb 2018 03:08:33 +0800 From: To: , , , Subject: [PATCH v5 1/3] dt-bindings: dmaengine: Add MediaTek High-Speed DMA controller bindings Date: Sun, 18 Feb 2018 03:08:29 +0800 Message-ID: <94e4a39e05a30f2ca3fafb61d19777f41fa49645.1518857747.git.sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180217_110856_289279_08AFAEB8 X-CRM114-Status: GOOD ( 13.25 ) 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: devicetree@vger.kernel.org, Sean Wang , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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 From: Sean Wang Document the devicetree bindings for MediaTek High-Speed DMA controller which could be found on MT7623 SoC or other similar Mediatek SoCs. Signed-off-by: Sean Wang Reviewed-by: Rob Herring --- .../devicetree/bindings/dma/mtk-hsdma.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/mtk-hsdma.txt diff --git a/Documentation/devicetree/bindings/dma/mtk-hsdma.txt b/Documentation/devicetree/bindings/dma/mtk-hsdma.txt new file mode 100644 index 0000000..4bb31735 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/mtk-hsdma.txt @@ -0,0 +1,33 @@ +MediaTek High-Speed DMA Controller +================================== + +This device follows the generic DMA bindings defined in dma/dma.txt. + +Required properties: + +- compatible: Must be one of + "mediatek,mt7622-hsdma": for MT7622 SoC + "mediatek,mt7623-hsdma": for MT7623 SoC +- reg: Should contain the register's base address and length. +- interrupts: Should contain a reference to the interrupt used by this + device. +- clocks: Should be the clock specifiers corresponding to the entry in + clock-names property. +- clock-names: Should contain "hsdma" entries. +- power-domains: Phandle to the power domain that the device is part of +- #dma-cells: The length of the DMA specifier, must be <1>. This one cell + in dmas property of a client device represents the channel + number. +Example: + + hsdma: dma-controller@1b007000 { + compatible = "mediatek,mt7623-hsdma"; + reg = <0 0x1b007000 0 0x1000>; + interrupts = ; + clocks = <ðsys CLK_ETHSYS_HSDMA>; + clock-names = "hsdma"; + power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>; + #dma-cells = <1>; + }; + +DMA clients must use the format described in dma/dma.txt file.