openwrtv3/target/linux/brcm2708/patches-4.4/0404-ARM-bcm2835-make-dma-channel-0-available-for-kms-set.patch
Álvaro Fernández Rojas 2b1c6b21b5 brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y

Also adds support for Raspberry Pi Compute Module 3 (untested).

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2016-09-10 14:54:26 +02:00

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From 0cbf2a548657ddbeb0b7b7d144cc4f46f477b2fc Mon Sep 17 00:00:00 2001
From: Martin Sperl <kernel@martin.sperl.org>
Date: Sat, 23 Apr 2016 14:20:41 +0000
Subject: [PATCH] ARM: bcm2835: make dma-channel-0 available for kms setups
Enable the use of dma-channel 0 when using the vc4-kms-v3d overlay.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
---
arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts | 7 +++++++
1 file changed, 7 insertions(+)
--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
+++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
@@ -119,6 +119,13 @@
};
};
+ fragment@15 {
+ target-path = "/soc/dma";
+ __overlay__ {
+ brcm,dma-channel-mask = <0x7f35>;
+ };
+ };
+
__overrides__ {
cma-256 = <0>,"+0-1-2-3-4";
cma-192 = <0>,"-0+1-2-3-4";