Add the fdt_translate_dma_address() function to translate DMA address to
CPU address.
This function works the same way as fdt_translate_address(), with the
difference that the translation relies on the "dma-ranges" property
instead of the "ranges" property.
Signed-off-by: Fabien Dessenne <fabien.desse...@st.com>
---
common/fdt_support.c | 6 ++++++
include/fdt_support.h | 2 ++
2 files changed, 8 insertions(+)
diff --git a/common/fdt_support.c b/common/fdt_support.c
index 4e7cf6e..6ec0742 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -1279,6 +1279,12 @@ u64 fdt_translate_address(const void *blob, int
node_offset,
return __of_translate_address(blob, node_offset, in_addr, "ranges");
}
+u64 fdt_translate_dma_address(const void *blob, int node_offset,
+ const fdt32_t *in_addr)
+{
+ return __of_translate_address(blob, node_offset, in_addr, "dma-ranges");
+}
+
/**
* fdt_node_offset_by_compat_reg: Find a node that matches compatiable and
* who's reg property matches a physical cpu address
diff --git a/include/fdt_support.h b/include/fdt_support.h
index 27fe564..b92d8c0 100644
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -220,6 +220,8 @@ static inline void fdt_fixup_mtdparts(void *fdt,
void fdt_del_node_and_alias(void *blob, const char *alias);
u64 fdt_translate_address(const void *blob, int node_offset,
const __be32 *in_addr);
+u64 fdt_translate_dma_address(const void *blob, int node_offset,
+ const __be32 *in_addr);
int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
phys_addr_t compat_off);
int fdt_alloc_phandle(void *blob);
--
2.7.4
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