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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>
This commit is contained in:
Bo Shen 2014-09-18 14:56:43 +02:00 committed by Nicolas Ferre
parent d24cd78399
commit fe855dbfd3
1 changed files with 4 additions and 0 deletions
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4
arch/arm/boot/dts/sama5d3xmb.dtsi
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@ -25,6 +25,8 @@ slot@0 {
};
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 @@ wm8904: wm8904@1a {
};
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 @@ pinctrl_usba_vbus: usba_vbus {
};
dbgu: serial@ffffee00 {
dmas = <0>, <0>; /* Do not use DMA for dbgu */
status = "okay";
};