From patchwork Thu Feb 14 07:54:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Shun-Chih.Yu" X-Patchwork-Id: 10811939 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 BAD4613BF for ; Thu, 14 Feb 2019 07:55:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A934B28558 for ; Thu, 14 Feb 2019 07:55:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9C9822D662; Thu, 14 Feb 2019 07:55:32 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham 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 49FE028558 for ; Thu, 14 Feb 2019 07:55:32 +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=OKFzRUCHo41IeLDDVRKfJ6Hd7+QXlN6GO/ZA90p99Nc=; b=sTgcbHFy6JzwKD /5KLWO5ihB4Y15UB8/ocXw76ttx0vEdbIfMtIP5bQGYpUSzlz2uEAsnKZB4vnbSQ1PoyHgG6HZopC FRSO2A0yADaXSLRYet0AiMpFr+Od/E5bxXwo7ZR5c8VyTYNiSaxmXcy5fP0g+wy1TrmX2XayWBzHN iG6iPTVXABa9xcVNBShcDVliBu1JsSt9+S2TBPN+exSc29bCIFN6Kzc/wOpVuxMuKrZExJ3JQTrEr zw7rcwyfn9LqKZzsXQxX4i7a+qOeOTtdxI5hXcs7CdIm66i+9mVHisPDdbN4nta2WJusTJDo4KBfm uPNCljKB2cwPxnkAUwnQ==; 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 1guBrg-00050p-Fp; Thu, 14 Feb 2019 07:55:24 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1guBrU-0004p8-Ev; Thu, 14 Feb 2019 07:55:14 +0000 X-UUID: 4ca01e3c65724abf89a0e8417894d165-20190213 X-UUID: 4ca01e3c65724abf89a0e8417894d165-20190213 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 554464294; Wed, 13 Feb 2019 23:55:07 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 13 Feb 2019 23:55:06 -0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 14 Feb 2019 15:55:04 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 14 Feb 2019 15:55:04 +0800 From: To: Sean Wang , Vinod Koul , "Rob Herring" , Matthias Brugger , "Dan Williams" Subject: [PATCH v2 1/1] dt-bindings: dmaengine: Add MediaTek Command-Queue DMA controller bindings Date: Thu, 14 Feb 2019 15:54:52 +0800 Message-ID: <1550130892-19488-2-git-send-email-shun-chih.yu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1550130892-19488-1-git-send-email-shun-chih.yu@mediatek.com> References: <1550130892-19488-1-git-send-email-shun-chih.yu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190213_235512_836533_89472189 X-CRM114-Status: GOOD ( 10.25 ) 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, linux-kernel@vger.kernel.org, srv_wsdupstream@mediatek.com, linux-mediatek@lists.infradead.org, Shun-Chih Yu , 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: Shun-Chih Yu Document the devicetree bindings for MediaTek Command-Queue DMA controller which could be found on MT6765 SoC or other similar Mediatek SoCs. Signed-off-by: Shun-Chih Yu Reviewed-by: Rob Herring Acked-by: Sean Wang --- .../devicetree/bindings/dma/mtk-cqdma.txt | 31 ++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/mtk-cqdma.txt diff --git a/Documentation/devicetree/bindings/dma/mtk-cqdma.txt b/Documentation/devicetree/bindings/dma/mtk-cqdma.txt new file mode 100644 index 0000000..fb12927 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/mtk-cqdma.txt @@ -0,0 +1,31 @@ +MediaTek Command-Queue DMA Controller +================================== + +Required properties: + +- compatible: Must be "mediatek,mt6765-cqdma" for MT6765. +- reg: Should contain the base address and length for each channel. +- interrupts: Should contain references to the interrupts for each channel. +- clocks: Should be the clock specifiers corresponding to the entry in + clock-names property. +- clock-names: Should contain "cqdma" entries. +- dma-channels: The number of DMA channels supported by the controller. +- dma-requests: The number of DMA request supported by the controller. +- #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: + + cqdma: dma-controller@10212000 { + compatible = "mediatek,mt6765-cqdma"; + reg = <0 0x10212000 0 0x1000>; + interrupts = , + ; + clocks = <&infracfg CLK_IFR_CQ_DMA>; + clock-names = "cqdma"; + dma-channels = <2>; + dma-requests = <32>; + #dma-cells = <1>; + }; + +DMA clients must use the format described in dma/dma.txt file.