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arm64: dts: allwinner: a64: Add MBUS controller node 

A64 contains MBUS, which is the bus used by DMA devices to access
system memory.

MBUS controller is responsible for arbitration between channels based
on set priority and can do some other things as well, like report
bandwidth used. It also maps RAM region to different address than CPU.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Jernej Skrabec 2020-02-10 18:06:54 +01:00 committed by Maxime Ripard
parent f0df2e05a2
commit fc7c2bfb08
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1 changed files with 8 additions and 0 deletions
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arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
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@ -1061,6 +1061,14 @@ pwm: pwm@1c21400 {
status = "disabled";
};
mbus: dram-controller@1c62000 {
compatible = "allwinner,sun50i-a64-mbus";
reg = <0x01c62000 0x1000>;
clocks = <&ccu 112>;
dma-ranges = <0x00000000 0x40000000 0xc0000000>;
#interconnect-cells = <1>;
};
csi: csi@1cb0000 {
compatible = "allwinner,sun50i-a64-csi";
reg = <0x01cb0000 0x1000>;