[RFC PATCH V1 2/6] dts: arm64: mt8183: Add DIP shared memory node

[Frederic Chen <frederic.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>]

This patch adds a shared memory region used on mt8183 for
exchanging tuning data between co-processor and
Digital Image Processing(DIP) unit.

Signed-off-by: Frederic Chen <frederic.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
---
 arch/arm64/boot/dts/mediatek/mt8183.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index c3a516e63141..aec68c6b4571 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -134,6 +134,19 @@
 		clock-output-names = "clk26m";
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		reserve-memory-dip_smem {
+			compatible = "mediatek,reserve-memory-dip_smem";
+			no-map;
+			size = <0 0x01400000>;  /*20 MB share mem size */
+			alignment = <0 0x1000>;
+			alloc-ranges = <0 0x40000000 0 0x10000000>;
+		};
+	};
+
 	timer {
 		compatible = "arm,armv8-timer";
 		interrupt-parent = <&gic>;
-- 
2.18.0