On Fri, Mar 06, 2020 at 04:10:31PM +0300, Sergey.Semin@xxxxxxxxxxxxxxxxxxxx wrote: > From: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx> > > This array property is used to indicate the maximum burst transaction > length supported by each DMA channel. > > Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx> > Signed-off-by: Alexey Malahov <Alexey.Malahov@xxxxxxxxxxxxxxxxxxxx> > Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> > Cc: Paul Burton <paulburton@xxxxxxxxxx> > Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx> > --- > .../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
