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arm64: dts: mediatek: mt8173: 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 MT8173 as well, to align with the
other 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/20250424102509.1083185-11-wenst@chromium.org
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
This commit is contained in:
Chen-Yu Tsai 2025-04-24 18:25:04 +08:00 • committed by AngeloGioacchino Del Regno
parent 19272b37aa
commit 94351a2d99
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GPG key ID: 9A3604CFAD978478
1 changed files with 9 additions and 0 deletions
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9
arch/arm64/boot/dts/mediatek/mt8173.dtsi
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@ -318,6 +318,14 @@
#address-cells = <2>;
#size-cells = <2>;
ranges;
afe_dma_mem: audio-dma-pool {
compatible = "shared-dma-pool";
size = <0 0x100000>;
alignment = <0 0x10>;
no-map;
};
vpu_dma_reserved: vpu-dma-mem@b7000000 {
compatible = "shared-dma-pool";
reg = <0 0xb7000000 0 0x500000>;
@ -887,6 +895,7 @@
<&topckgen CLK_TOP_AUD_2_SEL>;
assigned-clock-parents = <&topckgen CLK_TOP_APLL1>,
<&topckgen CLK_TOP_APLL2>;
memory-region = <&afe_dma_mem>;
};
mmc0: mmc@11230000 {