arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherent

Since the default DMA ops for arm64 are non-coherent, mark the X-Gene
controller explicitly as dma-coherent to avoid additional cache
maintenance.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Loc Ho <lho@apm.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/apm-storm.dtsi b/arch/arm64/boot/dts/apm-storm.dtsi
index 93f4b2dd9248..f8c40a66e65d 100644
--- a/arch/arm64/boot/dts/apm-storm.dtsi
+++ b/arch/arm64/boot/dts/apm-storm.dtsi
@@ -307,6 +307,7 @@
                               <0x0 0x1f21e000 0x0 0x1000>,
                               <0x0 0x1f217000 0x0 0x1000>;
                         interrupts = <0x0 0x86 0x4>;
+                        dma-coherent;
                         status = "disabled";
                         clocks = <&sata01clk 0>;
                         phys = <&phy1 0>;
@@ -321,6 +322,7 @@
                               <0x0 0x1f22e000 0x0 0x1000>,
                               <0x0 0x1f227000 0x0 0x1000>;
                         interrupts = <0x0 0x87 0x4>;
+                        dma-coherent;
                         status = "ok";
                         clocks = <&sata23clk 0>;
                         phys = <&phy2 0>;
@@ -334,6 +336,7 @@
                               <0x0 0x1f23d000 0x0 0x1000>,
                               <0x0 0x1f23e000 0x0 0x1000>;
                         interrupts = <0x0 0x88 0x4>;
+                        dma-coherent;
                         status = "ok";
                         clocks = <&sata45clk 0>;
                         phys = <&phy3 0>;