From: Chen-Yu Tsai Date: Thu, 24 Apr 2025 10:25:05 +0000 (+0800) Subject: arm64: dts: mediatek: mt8183-kukui: Reserve memory for audio frontend X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=938dfa850d9a88d74cc45a01639085ca748b303b;p=thirdparty%2Flinux.git 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 --- 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"; };