From: Nicolas Saenz Julienne nsaenzjulienne@suse.de
commit 55c7c0621078bd73e9d4d2a11eb36e61bc6fe998 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm/boot/dts/bcm2835-rpi.dtsi | 1 + 1 file changed, 1 insertion(+)
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi +++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi @@ -15,6 +15,7 @@ firmware: firmware { compatible = "raspberrypi,bcm2835-firmware", "simple-bus"; mboxes = <&mailbox>; + dma-ranges; };
power: power {