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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id t20sm7014819oij.19.2020.03.12.14.33.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Mar 2020 14:33:31 -0700 (PDT) Received: (nullmailer pid 16495 invoked by uid 1000); Thu, 12 Mar 2020 21:33:30 -0000 Date: Thu, 12 Mar 2020 16:33:30 -0500 From: Rob Herring To: Sergey.Semin@baikalelectronics.ru Cc: Vinod Koul , Mark Rutland , Serge Semin , Alexey Malahov , Thomas Bogendoerfer , Paul Burton , Ralf Baechle , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/5] dt-bindings: dma: dw: Add max burst transaction length property bindings Message-ID: <20200312213330.GA30463@bogus> References: <20200306131035.10937-1-Sergey.Semin@baikalelectronics.ru> <20200306131049.37EDD8030708@mail.baikalelectronics.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200306131049.37EDD8030708@mail.baikalelectronics.ru> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Fri, Mar 06, 2020 at 04:10:31PM +0300, Sergey.Semin@baikalelectronics.ru wrote: > From: Serge Semin > > This array property is used to indicate the maximum burst transaction > length supported by each DMA channel. > > Signed-off-by: Serge Semin > Signed-off-by: Alexey Malahov > Cc: Thomas Bogendoerfer > Cc: Paul Burton > Cc: Ralf Baechle > --- > .../devicetree/bindings/dma/snps,dma-spear1340.yaml | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml b/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml > index d7f9383ceb8f..308ec6482064 100644 > --- a/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml > +++ b/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml > @@ -126,6 +126,18 @@ properties: > enum: [0, 1] > default: 0 > > + snps,max-burst-len: > + description: | > + Maximum length of burst transactions supported by hardware. > + It's an array property with one cell per channel in units of > + CTLx register SRC_TR_WIDTH/DST_TR_WIDTH field. > + allOf: > + - $ref: /schemas/types.yaml#/definitions/uint32-array > + - maxItems: 8 > + items: > + enum: [4, 8, 16, 32, 64, 128, 256] > + default: 0 The default needs to be an allowed value in the enum. Rob