[RFC 5/5] RISC-V: Support a new config option for non-coherent DMA

[Atish Patra]

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 at wdc.com>
---
 arch/riscv/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 8fcceb8eda07..931b283c8ec9 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -209,6 +209,14 @@ 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
+
 source "arch/riscv/Kconfig.socs"
 source "arch/riscv/Kconfig.erratas"
 
-- 
2.31.1