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arm64: dts: mediatek: mt8183-kukui: Reserve memory for audio frontend

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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 MT8183 Kukui & Jacuzzi families
as well, to align with the other MediaTek-based ChromeOS platforms. This
also helps with memory starvation as these devices commonly end up in
low memory conditions.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250424102509.1083185-12-wenst@chromium.org
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
This commit is contained in:
Chen-Yu Tsai 2025-04-24 18:25:05 +08:00 committed by AngeloGioacchino Del Regno
parent 94351a2d99
commit 938dfa850d
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1 changed files with 11 additions and 0 deletions
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11
arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
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@ -85,6 +85,13 @@ 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: memory@50000000 {
compatible = "shared-dma-pool";
reg = <0 0x50000000 0 0x2900000>;
@ -199,6 +206,10 @@ tboard_thermistor2: thermal-sensor2 {
};
};
&afe {
memory-region = <&afe_dma_mem>;
};
&auxadc {
status = "okay";
};