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| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2020-02-29 09:25:20 +0100 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2020-02-29 12:50:51 +0100 |
| commit | a1383655cfaa71609d6236ae0fcf3b6047462b98 (patch) | |
| tree | c6f123859e0dfcfaa6c1063eda26f27e208d3cac /target/linux/bcm27xx/patches-5.4/950-0274-arm64-mm-Limit-the-DMA-zone-for-arm64.patch | |
| parent | a8aa974a9dfb4cba484dc4c1e4207fd9ec803410 (diff) | |
| download | upstream-a1383655cfaa71609d6236ae0fcf3b6047462b98.tar.gz upstream-a1383655cfaa71609d6236ae0fcf3b6047462b98.tar.bz2 upstream-a1383655cfaa71609d6236ae0fcf3b6047462b98.zip | |
bcm27xx: add linux 5.4 support
Tested on bcm2710 (Raspberry Pi 3B).
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0274-arm64-mm-Limit-the-DMA-zone-for-arm64.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0274-arm64-mm-Limit-the-DMA-zone-for-arm64.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0274-arm64-mm-Limit-the-DMA-zone-for-arm64.patch b/target/linux/bcm27xx/patches-5.4/950-0274-arm64-mm-Limit-the-DMA-zone-for-arm64.patch new file mode 100644 index 0000000000..e2c47c4459 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0274-arm64-mm-Limit-the-DMA-zone-for-arm64.patch @@ -0,0 +1,25 @@ +From 235f775351e8f7e47cff1baa1284e0df95e3234e Mon Sep 17 00:00:00 2001 +From: Andrei Gherzan <andrei@balena.io> +Date: Tue, 16 Jul 2019 13:28:22 +0100 +Subject: [PATCH] arm64/mm: Limit the DMA zone for arm64 + +On RaspberryPi, only the first 1Gb can be used for DMA[1]. + +[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2019-July/665986.html + +Signed-off-by: Andrei Gherzan <andrei@balena.io> +--- + arch/arm64/mm/init.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/arch/arm64/mm/init.c ++++ b/arch/arm64/mm/init.c +@@ -177,7 +177,7 @@ static void __init reserve_elfcorehdr(vo + static phys_addr_t __init max_zone_dma_phys(void) + { + phys_addr_t offset = memblock_start_of_DRAM() & GENMASK_ULL(63, 32); +- return min(offset + (1ULL << 32), memblock_end_of_DRAM()); ++ return min(offset + (1ULL << 30), memblock_end_of_DRAM()); + } + + #ifdef CONFIG_NUMA |