Commit fe855dbf authored Sep 18, 2014 by Bo Shen Committed by Nicolas Ferre Sep 18, 2014

ARM: at91: sama5d3xek: reserve dma channel for audio



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 <voice.shen@atmel.com>
[nicolas.ferre@atmel.com: move to the sama5d3xmb.dtsi to cover all board variants]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

parent d24cd783

arch/arm/boot/dts/sama5d3xmb.dtsi

+4 −0

Original line number	Diff line number	Diff line
		@@ -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";
		};