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| author | Manuel Lauss | 2014-02-20 14:59:23 +0100 |
|---|---|---|
| committer | Ralf Baechle | 2014-03-26 23:09:21 +0100 |
| commit | 88e9a93c9d53ddcf633aa07f14245da7f30408c2 (patch) | |
| tree | 743667e5317873f87f82a430c71de90cd106b34a /arch/mips/Kconfig | |
| parent | MIPS: Extend DMA_MAYBE_COHERENT logic to DMA_NONCOHERENT use (diff) | |
| download | kernel-qcow2-linux-88e9a93c9d53ddcf633aa07f14245da7f30408c2.tar.gz kernel-qcow2-linux-88e9a93c9d53ddcf633aa07f14245da7f30408c2.tar.xz kernel-qcow2-linux-88e9a93c9d53ddcf633aa07f14245da7f30408c2.zip | |
MIPS: Alchemy: Determine cohereny at runtime based on cpu type
All Alchemy chips have coherent DMA, but for example the USB or AC97
peripherals on the Au1000/1500/1100 are not.
This patch uses DMA_MAYBE_COHERENT on Alchemy and sets coherentio based
on CPU type.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/6576/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index daef6709db15..51f5a09f179d 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -63,6 +63,7 @@ config MIPS_ALCHEMY select CEVT_R4K select CSRC_R4K select IRQ_CPU + select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is select SYS_HAS_CPU_MIPS32_R1 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_APM_EMULATION |