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    Subject[RFC PATCH V4 3/6] RISC-V: Support a new config option for non-coherent DMA
    Date
    From: Atish Patra <atish.patra@wdc.com>

    In future, there will be more RISC-V platforms with non-coherent DMA.
    Instead of selecting all the required config options in every soc, create
    a new config that selects all the required configs related non-coherent
    DMA.

    Signed-off-by: Atish Patra <atish.patra@wdc.com>

    RISC-V: Support DMA_DIRECT_REMAP for non-coherent DMA

    Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
    ---
    arch/riscv/Kconfig | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
    index 3ab3730bee92..d18a59ea10e5 100644
    --- a/arch/riscv/Kconfig
    +++ b/arch/riscv/Kconfig
    @@ -213,6 +213,15 @@ config PGTABLE_LEVELS
    config LOCKDEP_SUPPORT
    def_bool y

    +config RISCV_DMA_NONCOHERENT
    + bool
    + select ARCH_HAS_DMA_PREP_COHERENT
    + select ARCH_HAS_SYNC_DMA_FOR_DEVICE
    + select ARCH_HAS_SYNC_DMA_FOR_CPU
    + select ARCH_HAS_SETUP_DMA_OPS
    + select DMA_GLOBAL_POOL
    + select DMA_DIRECT_REMAP
    +
    source "arch/riscv/Kconfig.socs"
    source "arch/riscv/Kconfig.erratas"

    --
    2.25.1
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