openwrt/target/linux/bcm27xx/patches-5.4/950-0637-ARM-dts-bcm283x-Fix-vc4-s-firmware-bus-DMA-limitatio.patch
Álvaro Fernández Rojas 77e97abf12 bcm27xx: update to latest patches from RPi foundation
Also removes random module and switches to new bcm2711 thermal driver.
Boot tested on RPi 4B v1.1 4G.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-05-28 19:12:43 +02:00

29 lines
991 B
Diff

From 142ad0b8433d6beb87070bd39a6b2d23ca9cae30 Mon Sep 17 00:00:00 2001
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Date: Thu, 19 Mar 2020 20:00:13 +0100
Subject: [PATCH] ARM: dts: bcm283x: Fix vc4's firmware bus DMA
limitations
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>
---
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 {