From 938dfa850d9a88d74cc45a01639085ca748b303b Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Thu, 24 Apr 2025 18:25:05 +0800 Subject: [PATCH] arm64: dts: mediatek: mt8183-kukui: Reserve memory for audio frontend 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 Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20250424102509.1083185-12-wenst@chromium.org Signed-off-by: AngeloGioacchino Del Regno --- arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi index ecc6c4d6f1cdf..400c61d110356 100644 --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi @@ -85,6 +85,13 @@ #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 @@ }; }; +&afe { + memory-region = <&afe_dma_mem>; +}; + &auxadc { status = "okay"; }; -- 2.47.2