[PATCH] ARM: at91: sama5d3xek: reserve dma channel for audio
From: Nicolas Ferre <hidden>
Date: 2014-09-18 13:23:28
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Bo Shen <redacted> 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 <redacted> [nicolas.ferre at atmel.com: move to the sama5d3xmb.dtsi to cover all board variants] Signed-off-by: Nicolas Ferre <redacted> --- 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 at f0004000 { + dmas = <0>, <0>; /* Do not use DMA for spi0 */ + m25p80 at 0 { compatible = "atmel,at25df321a"; spi-max-frequency = <50000000>;
@@ -51,6 +53,7 @@ }; usart1: serial at 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 at ffffee00 { + dmas = <0>, <0>; /* Do not use DMA for dbgu */ status = "okay"; };
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