aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/bcm27xx/patches-5.4/950-0206-arm-bcm2835-DMA-can-only-address-1GB.patch
diff options
context:
space:
mode:
authorÁlvaro Fernández Rojas <noltari@gmail.com>2020-03-16 20:41:03 +0100
committerÁlvaro Fernández Rojas <noltari@gmail.com>2020-03-16 21:24:23 +0100
commit0f6d04457a64f2393b05f662dc8d381ea1963c66 (patch)
tree2d6a3c82d5e6d02b030b16df66da8bf9209b02ec /target/linux/bcm27xx/patches-5.4/950-0206-arm-bcm2835-DMA-can-only-address-1GB.patch
parentd890f85e59617228b1e76e8cf45a9309904d9124 (diff)
downloadupstream-0f6d04457a64f2393b05f662dc8d381ea1963c66.tar.gz
upstream-0f6d04457a64f2393b05f662dc8d381ea1963c66.tar.bz2
upstream-0f6d04457a64f2393b05f662dc8d381ea1963c66.zip
bcm27xx: sync 5.4 patches with RPi Foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0206-arm-bcm2835-DMA-can-only-address-1GB.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0206-arm-bcm2835-DMA-can-only-address-1GB.patch25
1 files changed, 25 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0206-arm-bcm2835-DMA-can-only-address-1GB.patch b/target/linux/bcm27xx/patches-5.4/950-0206-arm-bcm2835-DMA-can-only-address-1GB.patch
new file mode 100644
index 0000000000..86ad707b95
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0206-arm-bcm2835-DMA-can-only-address-1GB.patch
@@ -0,0 +1,25 @@
+From 67b31f71da2c251860dc6ddeffc5d15f8a74c675 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,