On Wed, 2018-11-21 at 10:41 -0600, Rob Herring wrote: > On Wed, Nov 21, 2018 at 5:29 AM Radu Pirea <radu_nicolae.pirea@xxxxxx > > wrote: > > The bindings for DMA are now common for both drivers of the USART > > IP. > > > > The node given as an example for USART in SPI mode has been updated > > in > > order to include DMA bindings. > > > > Signed-off-by: Radu Pirea <radu_nicolae.pirea@xxxxxx> > > --- > > .../devicetree/bindings/mfd/atmel-usart.txt | 15 ++++++++++- > > ---- > > 1 file changed, 10 insertions(+), 5 deletions(-) > > > > diff --git a/Documentation/devicetree/bindings/mfd/atmel-usart.txt > > b/Documentation/devicetree/bindings/mfd/atmel-usart.txt > > index 7f0cd72f47d2..8ad008175343 100644 > > --- a/Documentation/devicetree/bindings/mfd/atmel-usart.txt > > +++ b/Documentation/devicetree/bindings/mfd/atmel-usart.txt > > @@ -17,17 +17,19 @@ Required properties for USART in SPI mode: > > - cs-gpios: chipselects (internal cs not supported) > > - atmel,usart-mode : Must be <AT91_USART_MODE_SPI> (found in dt- > > bindings/mfd/at91-usart.h) > > > > +Optional properties in serial and SPI mode: > > +- dma bindings for dma transfer: > > + - dmas: DMA specifier, consisting of a phandle to DMA > > controller node, > > + memory peripheral interface and USART DMA channel > > ID, FIFO configuration. > > + Refer to dma.txt and atmel-dma.txt for details. > > + - dma-names: "rx" for RX channel, "tx" for TX channel. > > + dma-names = "tx", "rx"; > > The dma-names should have a defined order. Thanks Rob. I will specify in bindings a fixed order for dmas and dma-names. > > Rob
