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ARM: dts: bcm283x: Fix vc4's firmware bus DMA limitations

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The bus is virtual and devices have to inherit their DMA constraints
from the underlying interconnect. So add an empty dma-ranges property to
the bus node, implying the firmware bus' DMA constraints are identical to
its parent's.

Fixes: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support")
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Nicolas Saenz Julienne 2020-03-19 20:00:13 +01:00 committed by Florian Fainelli
parent 6687c201fd
commit 55c7c06210
1 changed files with 1 additions and 0 deletions
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arch/arm/boot/dts/bcm2835-rpi.dtsi
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@ -15,6 +15,7 @@
firmware: firmware {
compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
mboxes = <&mailbox>;
dma-ranges;
};
power: power {