From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v6 1/3] dt-bindings: dmaengine: Add MediaTek High-Speed DMA controller bindings Date: Wed, 7 Mar 2018 13:28:49 -0600 Message-ID: <20180307192849.bdedrzqmpmwprpc2@rob-hp-laptop> References: <1ae80ef14cac41dea35dca49e8071d67c955f5e7.1520407882.git.sean.wang@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1ae80ef14cac41dea35dca49e8071d67c955f5e7.1520407882.git.sean.wang@mediatek.com> Sender: linux-kernel-owner@vger.kernel.org To: sean.wang@mediatek.com Cc: vinod.koul@intel.com, dan.j.williams@intel.com, mark.rutland@arm.com, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org On Wed, Mar 07, 2018 at 04:16:26PM +0800, sean.wang@mediatek.com wrote: > 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 > --- > .../devicetree/bindings/dma/mtk-hsdma.txt | 33 ++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > create mode 100644 Documentation/devicetree/bindings/dma/mtk-hsdma.txt Please add reviewed-by's when posting new versions. > > 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 >