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| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2022-05-16 23:40:32 +0200 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2022-05-17 15:11:22 +0200 |
| commit | 20ea6adbf199097c4f5f591ffee088340630dae4 (patch) | |
| tree | d6719d95e136611a1c25bbf7789652d6d402779d /target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch | |
| parent | bca05bd072180dc38ef740b37ded9572a6db1981 (diff) | |
| download | upstream-20ea6adbf199097c4f5f591ffee088340630dae4.tar.gz upstream-20ea6adbf199097c4f5f591ffee088340630dae4.tar.bz2 upstream-20ea6adbf199097c4f5f591ffee088340630dae4.zip | |
bcm27xx: add support for linux v5.15
Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B
Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch b/target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch new file mode 100644 index 0000000000..585393989b --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch @@ -0,0 +1,25 @@ +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, |