[PATCH v6 13/14] arm64: dts: mt8195: Add dma-ranges for the parent "soc" node

[Yong Wu]

After commit f1ad5338a4d5 ("of: Fix "dma-ranges" handling for bus
controllers"), the dma-ranges property is not allowed for
the leaf node. But our iommu/dma-ranges is 16GB, we still expect
separate the 16GB dma-range like:
a) display is in 0 - 4GB;
b) vcodec is in 4GB - 8GB;
c) camera is in 8GB - 12GB.
We can not expect all the masters add a parent node for them,
especial for the existed drivers/nodes.
Thus, we add whole the 16GB dma-ranges in the parent "soc" node.

Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/mediatek/mt8195.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
index 89f469ba9f6c..7d87cbabc9f1 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
@@ -364,6 +364,7 @@ soc {
 		#size-cells = <2>;
 		compatible = "simple-bus";
 		ranges;
+		dma-ranges = <0x0 0x0 0x0 0x0 0x4 0x0>;
 
 		gic: interrupt-controller@c000000 {
 			compatible = "arm,gic-v3";
-- 
2.25.1