diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0637-ARM-dts-bcm283x-Fix-vc4-s-firmware-bus-DMA-limitatio.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0637-ARM-dts-bcm283x-Fix-vc4-s-firmware-bus-DMA-limitatio.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0637-ARM-dts-bcm283x-Fix-vc4-s-firmware-bus-DMA-limitatio.patch b/target/linux/bcm27xx/patches-5.4/950-0637-ARM-dts-bcm283x-Fix-vc4-s-firmware-bus-DMA-limitatio.patch new file mode 100644 index 0000000000..31840e5437 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0637-ARM-dts-bcm283x-Fix-vc4-s-firmware-bus-DMA-limitatio.patch @@ -0,0 +1,28 @@ +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 { |