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Diffstat (limited to 'arch/arm/mach-h720x/include/mach/memory.h')
-rw-r--r--arch/arm/mach-h720x/include/mach/memory.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-h720x/include/mach/memory.h b/arch/arm/mach-h720x/include/mach/memory.h
index 83a2fa090e8..8cfb665e04b 100644
--- a/arch/arm/mach-h720x/include/mach/memory.h
+++ b/arch/arm/mach-h720x/include/mach/memory.h
@@ -8,5 +8,14 @@
#define __ASM_ARCH_MEMORY_H
#define PHYS_OFFSET UL(0x40000000)
+/*
+ * This is the maximum DMA address that can be DMAd to.
+ * There should not be more than (0xd0000000 - 0xc0000000)
+ * bytes of RAM.
+ *
+ * If you set this, you must also set ISA_DMA_THRESHOLD and setup a DMA
+ * zone if this does not cover all possible RAM.
+ */
+#define MAX_DMA_ADDRESS 0xd0000000
#endif