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29 lines
991 B
Diff
29 lines
991 B
Diff
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From 142ad0b8433d6beb87070bd39a6b2d23ca9cae30 Mon Sep 17 00:00:00 2001
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Date: Thu, 19 Mar 2020 20:00:13 +0100
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Subject: [PATCH] ARM: dts: bcm283x: Fix vc4's firmware bus DMA
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limitations
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The bus is virtual and devices have to inherit their DMA constraints
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from the underlying interconnect. So add an empty dma-ranges property to
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the bus node, implying the firmware bus' DMA constraints are identical to
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its parent's.
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Fixes: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support")
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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---
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arch/arm/boot/dts/bcm2835-rpi.dtsi | 1 +
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1 file changed, 1 insertion(+)
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--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
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+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
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@@ -15,6 +15,7 @@
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firmware: firmware {
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compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
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mboxes = <&mailbox>;
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+ dma-ranges;
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};
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power: power {
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