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authorBo Shen <voice.shen@atmel.com>2014-09-18 14:56:43 +0200
committerNicolas Ferre <nicolas.ferre@atmel.com>2014-09-18 15:21:03 +0200
commitfe855dbfd3fde8fd3093e51992904e3c875a4a02 (patch)
tree28a3f1f418f3497bedc6b3222d5fa4f2472e9c80 /arch/arm/boot
parentd24cd78399a3625a69887c8124638260c1c37a2b (diff)
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>
Diffstat (limited to 'arch/arm/boot')
-rw-r--r--arch/arm/boot/dts/sama5d3xmb.dtsi4
1 files changed, 4 insertions, 0 deletions
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";
};