[PATCH 3/3] arm64: dts: mt8183: use restricted swiotlb for scp mem
From: Hsin-Yi Wang <hidden>
Date: 2021-11-23 11:21:26
Also in:
linux-arm-kernel, linux-iommu, linux-mediatek, lkml
Subsystem:
arm/mediatek soc support, the rest · Maintainers:
Matthias Brugger, AngeloGioacchino Del Regno, Linus Torvalds
Use restricted-dma-pool for mtk_scp's reserved memory. And set the io-tlb-segsize to 4096 since the driver needs at least 2560 slabs to allocate memory. Signed-off-by: Hsin-Yi Wang <redacted> --- arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index 94c13c45919445..de94b2fd7f33e7 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi@@ -109,9 +109,9 @@ reserved_memory: reserved-memory { ranges; scp_mem_reserved: scp_mem_region { - compatible = "shared-dma-pool"; + compatible = "restricted-dma-pool"; reg = <0 0x50000000 0 0x2900000>; - no-map; + io-tlb-segsize = <4096>; }; };
--
2.34.0.rc2.393.gf8c9666880-goog