From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Subject: Re: [PATCH 1/3] dt-bindings: k3dma: add optional property dma_min_chan Date: Thu, 28 Jun 2018 11:30:34 +0530 Message-ID: <20180628060034.GN22377@vkoul-mobl> References: <20180622032416.20133-1-guodong.xu@linaro.org> <20180622032416.20133-2-guodong.xu@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20180622032416.20133-2-guodong.xu@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: Guodong Xu Cc: robh+dt@kernel.org, mark.rutland@arm.com, dan.j.williams@intel.com, liyu65@hisilicon.com, suzhuangluan@hisilicon.com, xuhongtao8@hisilicon.com, zhongkaihua@huawei.com, xuezhiliang@hisilicon.com, xupeng7@huawei.com, sunliang10@huawei.com, fengbaopeng@hisilicon.com, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org On 22-06-18, 11:24, Guodong Xu wrote: > From: Li Yu > > Add optional property dma_min_chan for k3dma. > > Signed-off-by: Li Yu > --- > Documentation/devicetree/bindings/dma/k3dma.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/dma/k3dma.txt b/Documentation/devicetree/bindings/dma/k3dma.txt > index 4945aeac4dc4..2fa1370c3173 100644 > --- a/Documentation/devicetree/bindings/dma/k3dma.txt > +++ b/Documentation/devicetree/bindings/dma/k3dma.txt > @@ -12,6 +12,11 @@ Required properties: > have specific request line > - clocks: clock required > > +Optional properties: > +- dma_min_chan: the minimum number of DMA channel which begin to use > + the default value is 0, but in some platform is Sorry I don't understand this property, we already have dma-channels which describes the channels in a controller. What is purpose of this ? > + configured 1, like hi3660 platform > + > Example: > > Controller: > @@ -21,6 +26,7 @@ Controller: > #dma-cells = <1>; > dma-channels = <16>; > dma-requests = <27>; > + dma_min_chan = <1>; > interrupts = <0 12 4>; > clocks = <&pclk>; > }; > -- > 2.17.1 -- ~Vinod