mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 14:13:16 +00:00
26 lines
836 B
Diff
26 lines
836 B
Diff
|
From 6808d6ad11225c29e18e71d92916e65bfd8db99d Mon Sep 17 00:00:00 2001
|
||
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
||
|
|
Date: Wed, 29 May 2019 15:47:42 +0100
|
||
|
|
Subject: [PATCH] arm: bcm2835: DMA can only address 1GB
|
||
|
|
|
||
|
|
The legacy peripherals can only address the first gigabyte of RAM, so
|
||
|
|
ensure that DMA allocations are restricted to that region.
|
||
|
|
|
||
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
||
|
|
---
|
||
|
|
arch/arm/mach-bcm/board_bcm2835.c | 3 +++
|
||
|
|
1 file changed, 3 insertions(+)
|
||
|
|
|
||
|
|
--- a/arch/arm/mach-bcm/board_bcm2835.c
|
||
|
|
+++ b/arch/arm/mach-bcm/board_bcm2835.c
|
||
|
|
@@ -114,6 +114,9 @@ static const char * const bcm2835_compat
|
||
|
|
};
|
||
|
|
|
||
|
|
DT_MACHINE_START(BCM2835, "BCM2835")
|
||
|
|
+#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
|
||
|
|
+ .dma_zone_size = SZ_1G,
|
||
|
|
+#endif
|
||
|
|
.map_io = bcm2835_map_io,
|
||
|
|
.init_machine = bcm2835_init,
|
||
|
|
.dt_compat = bcm2835_compat,
|