From: Bo Shen <[email protected]> We set the DMA configuration on USARTs in the SoC DT in (ARM: at91: sama5d3: add usart dma configurations). As the audio must work with DMA channels, we reserve some dma channels for audio, or else audio won't work.
Signed-off-by: Bo Shen <[email protected]> [[email protected]: move to the sama5d3xmb.dtsi to cover all board variants] Signed-off-by: Nicolas Ferre <[email protected]> --- arch/arm/boot/dts/sama5d3xmb.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/sama5d3xmb.dtsi b/arch/arm/boot/dts/sama5d3xmb.dtsi index b8c6f20e780c..49c10d33df30 100644 --- a/arch/arm/boot/dts/sama5d3xmb.dtsi +++ b/arch/arm/boot/dts/sama5d3xmb.dtsi @@ -25,6 +25,8 @@ }; spi0: spi@f0004000 { + dmas = <0>, <0>; /* Do not use DMA for spi0 */ + m25p80@0 { compatible = "atmel,at25df321a"; spi-max-frequency = <50000000>; @@ -51,6 +53,7 @@ }; usart1: serial@f0020000 { + dmas = <0>, <0>; /* Do not use DMA for usart1 */ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_usart1 &pinctrl_usart1_rts_cts>; status = "okay"; @@ -132,6 +135,7 @@ }; dbgu: serial@ffffee00 { + dmas = <0>, <0>; /* Do not use DMA for dbgu */ status = "okay"; }; -- 1.8.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
