Thread (25 messages) 25 messages, 4 authors, 2021-03-03

[RFC 07/13] arm64: Mark ARCH_MVEBU as needing broken 64bit MMIO support

From: Nicolas Saenz Julienne <hidden>
Date: 2021-02-26 14:07:20
Also in: linux-arm-kernel, linux-devicetree
Subsystem: arm64 port (aarch64 architecture), the rest · Maintainers: Catalin Marinas, Will Deacon, Linus Torvalds

The bus AP806's IOMMU sits on can't handle 64bit MMIO accesses[1]. So
select 'ARCH_HAS_64BIT_MMIO_BROKEN' for the platform.

Signed-off-by: Nicolas Saenz Julienne <redacted>
[1] See Armada-AP806 erratum #582743
---
 arch/arm64/Kconfig.platforms | 1 +
 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index cdfd5fed457f..04a97cf486c5 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -175,6 +175,7 @@ config ARCH_MESON
 
 config ARCH_MVEBU
 	bool "Marvell EBU SoC Family"
+	select ARCH_HAS_64BIT_MMIO_BROKEN
 	select ARMADA_AP806_SYSCON
 	select ARMADA_CP110_SYSCON
 	select ARMADA_37XX_CLK
-- 
2.30.1
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