[PATCH 5.10 595/717] arm64: dts: ti: k3-am65: mark dss as dma-coherent

[Greg Kroah-Hartman]

From: Tomi Valkeinen <tomi.valkeinen@xxxxxx>

commit 50301e8815c681bc5de8ca7050c4b426923d4e19 upstream.

DSS is IO coherent on AM65, so we should mark it as such with
'dma-coherent' property in the DT file.

Fixes: fc539b90eda2 ("arm64: dts: ti: am654: Add DSS node")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Signed-off-by: Nishanth Menon <nm@xxxxxx>
Acked-by: Nikhil Devshatwar <nikhil.nd@xxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v5.8+
Link: https://lore.kernel.org/r/20201102134650.55321-1-tomi.valkeinen@xxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/arm64/boot/dts/ti/k3-am65-main.dtsi |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
@@ -867,6 +867,8 @@
 
 		status = "disabled";
 
+		dma-coherent;
+
 		dss_ports: ports {
 			#address-cells = <1>;
 			#size-cells = <0>;