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dt-overlay to enable dma for spi driver

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Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
This commit is contained in:
Martin Sperl
2015-07-22 08:34:41 +00:00
committed by popcornmix
parent b001cd6a6b
commit 04e67d061b
2 changed files with 21 additions and 0 deletions
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1
arch/arm/boot/dts/overlays/Makefile
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@@ -45,6 +45,7 @@ dtb-$(RPI_DT_OVERLAYS) += rpi-sense-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += sdhost-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += spi-bcm2708-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += spi-bcm2835-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += spi-dma-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += tinylcd35-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += uart1-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += vga666-overlay.dtb

20
arch/arm/boot/dts/overlays/spi-dma-overlay.dts Executable file
View File

@@ -0,0 +1,20 @@
/*
* Device tree overlay for spi-bcm2835 to allow dma
*/
/dts-v1/;
/plugin/;
/ {
compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
fragment@0 {
target = <&spi0>;
__overlay__ {
#address-cells = <1>;
#size-cells = <0>;
dmas = <&dma 6>, <&dma 7>;
dma-names = "tx", "rx";
};
};
};