From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751828AbeCOHkv (ORCPT ); Thu, 15 Mar 2018 03:40:51 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:35711 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751657AbeCOHkq (ORCPT ); Thu, 15 Mar 2018 03:40:46 -0400 X-UUID: 76c503b3f78c4b69a18e3cd87abe4b9a-20180315 From: To: , , , CC: , , , , , Sean Wang Subject: [PATCH v7 1/3] dt-bindings: dmaengine: Add MediaTek High-Speed DMA controller bindings Date: Thu, 15 Mar 2018 15:40:35 +0800 Message-ID: <59f25e9e710c129c4aec98ccc8d2d4661e593112.1521098171.git.sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-Product-Ver: SMEX-12.5.0.5042-8.2.9001-23720.005 X-TM-AS-Result: No-9.363900-8.000000-10 X-TMASE-MatchedRID: Bo0EIJTmAYwHit7FBHXEjjLBReqieaF6tZN20SHV1TRYjwH7MZdcVIpb wG9fIuITLSHDQi/tZU+OEmLXxEuoAga1NXbjqus0FYJUGv4DL3wBmf/gD11vZFmmz7LVVfOpBK6 s6YP1BlpeXriZvQ4Zl8UVUCB+hEygg+QbvWfvu8gLPVZHwod7gFAI6wCVrE3vKlVEb/kJBdyjxY yRBa/qJcFwgTvxipFajoczmuoPCq1aP7/xRVDKCqUXwX6ZaHDtMy8X5HIqswudBoI4+K5AvVxGJ 4HrGr0yQwymtxuJ6y0= X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--9.363900-8.000000 X-TMASE-Version: SMEX-12.5.0.5042-8.2.9001-23720.005 X-TMASE-POSTMAN: 2-d; X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. -- 2.7.4