arm64: allwinner: a64: Add device node for DMA controller

The A64 SoC has a DMA controller that supports 8 DMA channels
to and from various peripherals. The last used DRQ port is 27.

Add a device node for it.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index a9f3a90..053c465 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -136,6 +136,17 @@
                        reg = <0x01c00000 0x1000>;
                };
 
+               dma: dma-controller@1c02000 {
+                       compatible = "allwinner,sun50i-a64-dma";
+                       reg = <0x01c02000 0x1000>;
+                       interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&ccu CLK_BUS_DMA>;
+                       dma-channels = <8>;
+                       dma-requests = <27>;
+                       resets = <&ccu RST_BUS_DMA>;
+                       #dma-cells = <1>;
+               };
+
                mmc0: mmc@1c0f000 {
                        compatible = "allwinner,sun50i-a64-mmc";
                        reg = <0x01c0f000 0x1000>;