Some MediaTek platforms already reserve a small block of memory for the
audio frontend. These platforms reserve it at a fixed address, though it
is unclear if that is due to hardware access restrictions or simply
compacting the reserved memory blocks together.

Reserve the same size of memory on the MT8192 Asurada family as well, to
align with the other MediaTek-based ChromeOS platforms.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 516fba9b3c6d..0574fe50468f 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -199,6 +199,13 @@ reserved_memory: reserved-memory {
 		#size-cells = <2>;
 		ranges;
 
+		afe_dma_mem: audio-dma-pool {
+			compatible = "shared-dma-pool";
+			size = <0 0x100000>;
+			alignment = <0 0x10>;
+			no-map;
+		};
+
 		scp_mem_reserved: scp@50000000 {
 			compatible = "shared-dma-pool";
 			reg = <0 0x50000000 0 0x2900000>;
@@ -277,6 +284,10 @@ sound: sound {
 	};
 };
 
+&afe {
+	memory-region = <&afe_dma_mem>;
+};
+
 &dpi0 {
 	pinctrl-names = "sleep", "default";
 	pinctrl-0 = <&dpi_pin_default>;
-- 
2.49.0.805.g082f7c87e0-goog