openwrt/target/linux/bcm27xx/patches-4.19/950-0461-arm-bcm2835-DMA-can-only-address-1GB.patch
Adrian Schmutzler 7d7aa2fd92 brcm2708: rename target to bcm27xx
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-02-14 14:10:51 +01:00

26 lines
836 B
Diff

From 9334afe7293b3a78b7e070a70880b2db7aa98365 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
@@ -123,6 +123,9 @@ 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,