From 9066d0b017a276f1edd5f3972885ebb95ac661ad Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Thu, 24 Apr 2025 18:25:07 +0800 Subject: [PATCH] arm64: dts: mediatek: mt8192-asurada: 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 MT8192 Asurada family as well, to align with the other MediaTek-based ChromeOS platforms. Signed-off-by: Chen-Yu Tsai Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20250424102509.1083185-14-wenst@chromium.org Signed-off-by: AngeloGioacchino Del Regno --- 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 dd0d07fbe61a8..a611957ac01ca 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi @@ -199,6 +199,13 @@ #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: scp@50000000 { compatible = "shared-dma-pool"; reg = <0 0x50000000 0 0x2900000>; @@ -276,6 +283,10 @@ }; }; +&afe { + memory-region = <&afe_dma_mem>; +}; + &dsi0 { status = "okay"; }; -- 2.47.2