[PATCH] arm64: dts: marvell: mark CP110 ahci as dma-coherent

Mark Kettenis kettenis at openbsd.org
Sat Mar 31 07:44:06 PDT 2018


The hardware is clearly DMA coherent and not marking it as such leads
to cache coherency problems, at least with the OpenBSD kernel.

Signed-off-by: Mark Kettenis <kettenis at openbsd.org>
---
 arch/arm64/boot/dts/marvell/armada-cp110.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-cp110.dtsi b/arch/arm64/boot/dts/marvell/armada-cp110.dtsi
index a8af4136dbe7..7e9177ef7b7d 100644
--- a/arch/arm64/boot/dts/marvell/armada-cp110.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-cp110.dtsi
@@ -231,6 +231,7 @@
 			compatible = "marvell,armada-8k-ahci",
 			"generic-ahci";
 			reg = <0x540000 0x30000>;
+			dma-coherent;
 			interrupts = <ICU_GRP_NSR 107 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&CP110_LABEL(clk) 1 15>;
 			status = "disabled";
-- 
2.16.2




More information about the linux-arm-kernel mailing list