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From b10a49ab016ed9ac8f231845fb3e83fbf3505652 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
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 <phil@raspberrypi.com>
---
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>;
};
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