From b10a49ab016ed9ac8f231845fb3e83fbf3505652 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Mon, 12 Oct 2020 14:36:35 +0100 Subject: [PATCH] ARM: bcm2711-rpi.dts: Unlock DMA channels 9 & 10 The downstream-specific override of the 32-bit DMA mask needlessly disables channels 9 and 10 - the VPU doesn't use them. This override is redundant, so delete it. See: https://github.com/raspberrypi/linux/issues/3896 Signed-off-by: Phil Elwell --- arch/arm/boot/dts/bcm2711-rpi.dtsi | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) --- a/arch/arm/boot/dts/bcm2711-rpi.dtsi +++ b/arch/arm/boot/dts/bcm2711-rpi.dtsi @@ -246,13 +246,8 @@ }; }; -&dma { - /* The VPU firmware uses DMA channel 11 for VCHIQ */ - brcm,dma-channel-mask = <0x1f5>; -}; - &dma40 { - /* The VPU firmware DMA channel 11 for VCHIQ */ + /* The VPU firmware uses DMA channel 11 for VCHIQ */ brcm,dma-channel-mask = <0x7000>; };