From f07e572f6447465d8938679533d604e402b0f066 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Thu, 18 Feb 2021 18:04:33 +0100 Subject: bcm27xx: import latest patches from the RPi foundation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas --- ...0203-arm-bcm2835-DMA-can-only-address-1GB.patch | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.4/950-0203-arm-bcm2835-DMA-can-only-address-1GB.patch (limited to 'target/linux/bcm27xx/patches-5.4/950-0203-arm-bcm2835-DMA-can-only-address-1GB.patch') diff --git a/target/linux/bcm27xx/patches-5.4/950-0203-arm-bcm2835-DMA-can-only-address-1GB.patch b/target/linux/bcm27xx/patches-5.4/950-0203-arm-bcm2835-DMA-can-only-address-1GB.patch new file mode 100644 index 0000000000..86ad707b95 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0203-arm-bcm2835-DMA-can-only-address-1GB.patch @@ -0,0 +1,25 @@ +From 67b31f71da2c251860dc6ddeffc5d15f8a74c675 Mon Sep 17 00:00:00 2001 +From: Phil Elwell +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 +--- + 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, -- cgit v1.2.3