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| author | Manuel Lauss <manuel.lauss@gmail.com> | 2014-04-10 22:57:59 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-05-28 11:04:48 +0200 |
| commit | 739cec8f187f1ea920b8821ef4ae733bc097085c (patch) | |
| tree | a5a5b3e1584909b34a36f98fd6daf6dd76426c9a /arch/mips/alchemy/common/setup.c | |
| parent | MIPS: Octeon: Add PCIe2 support in arch_setup_msi_irq() (diff) | |
| download | linux-739cec8f187f1ea920b8821ef4ae733bc097085c.tar.xz linux-739cec8f187f1ea920b8821ef4ae733bc097085c.zip | |
MIPS: Alchemy: Default to noncoherent IO on Au1200 AB
CONFIG_DMA_COHERENT is no longer set; default to noncoherent io on
Au1200 revision AB to make USB work.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/6745/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/alchemy/common/setup.c')
| -rw-r--r-- | arch/mips/alchemy/common/setup.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c index 566a1743f685..8267e3c97721 100644 --- a/arch/mips/alchemy/common/setup.c +++ b/arch/mips/alchemy/common/setup.c @@ -67,6 +67,12 @@ void __init plat_mem_setup(void) case ALCHEMY_CPU_AU1500: case ALCHEMY_CPU_AU1100: coherentio = 0; + break; + case ALCHEMY_CPU_AU1200: + /* Au1200 AB USB does not support coherent memory */ + if (0 == (read_c0_prid() & PRID_REV_MASK)) + coherentio = 0; + break; } board_setup(); /* board specific setup */ |