dm: core: Introduce xxx_translate_dma_address()
Add the following functions to translate DMA address to CPU address:
- dev_translate_dma_address()
- ofnode_translate_dma_address()
- of_translate_dma_address()
- fdt_translate_dma_address()
These functions work the same way as xxx_translate_address(), with the
difference that the translation relies on the "dma-ranges" property
instead of the "ranges" property.
Add related test. Test report:
=> ut dm fdt_translation
Test: dm_test_fdt_translation: test-fdt.c
Test: dm_test_fdt_translation: test-fdt.c (flat tree)
Failures: 0
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 531c1af..ac985ec 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -756,6 +756,10 @@
3 0x300 0xB000 0x1000
>;
+ dma-ranges = <0 0x000 0x10000000 0x1000
+ 1 0x100 0x20000000 0x1000
+ >;
+
dev@0,0 {
compatible = "denx,u-boot-fdt-dummy";
reg = <0 0x0 0x1000>;