[PATCH RFC 08/12] RISC-V: StarFive: J7100: set /soc/dma-noncoherent

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

With upcoming changes, cache handling will be skipped on RISC-V, because
arch is cache-coherent by default. StarFive JH7100 has non-coherent DMA
masters though, so note that in the DT.
---
 arch/riscv/Kconfig.socs    | 1 +
 arch/riscv/dts/jh7100.dtsi | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 0f03637a66bc..c0cac2ca6816 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -87,6 +87,7 @@ config SOC_STARFIVE_JH7100
 	bool
 	select SOC_STARFIVE_JH71XX
 	select SIFIVE_L2
+	select OF_DMA_COHERENCY
 	help
 	  Unlike JH7110 and later, CPU on the JH7100 are not cache-coherent
 	  with respect to DMA masters like GMAC and DW MMC controller.
diff --git a/arch/riscv/dts/jh7100.dtsi b/arch/riscv/dts/jh7100.dtsi
index e3990582af97..b11801553bf7 100644
--- a/arch/riscv/dts/jh7100.dtsi
+++ b/arch/riscv/dts/jh7100.dtsi
@@ -212,6 +212,7 @@
 		#clock-cells = <1>;
 		compatible = "simple-bus";
 		ranges;
+		dma-noncoherent;
 
 		intram0: sram@18000000 {
 			compatible = "mmio-sram";
-- 
2.30.2