dm: fix ofnode_read_addr/size_cells()
In the case of the live tree ofnode_read_addr_cells() and
ofnode_read_size_cells() return the #address-cells and #size-cells defined
in the parent node. With the patch the same is done for a non-live tree.
The only consumer of these functions is currently the CFI flash driver.
This patch fixes the incorrect parsing of the device tree leading to
'saveenv' failing on qemu_arm64_defconfig.
For testing qemu-system-aarch64 has to be called with
-drive if=pflash,format=raw,index=1,file=envstore.img
to provide the flash memory. envstore.img must be 64 MiB large.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/include/dm/read.h b/include/dm/read.h
index 487ec9e..cac7dd5 100644
--- a/include/dm/read.h
+++ b/include/dm/read.h
@@ -878,14 +878,16 @@
static inline int dev_read_addr_cells(const struct udevice *dev)
{
- /* NOTE: this call should walk up the parent stack */
- return fdt_address_cells(gd->fdt_blob, dev_of_offset(dev));
+ int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev));
+
+ return fdt_address_cells(gd->fdt_blob, parent);
}
static inline int dev_read_size_cells(const struct udevice *dev)
{
- /* NOTE: this call should walk up the parent stack */
- return fdt_size_cells(gd->fdt_blob, dev_of_offset(dev));
+ int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev));
+
+ return fdt_size_cells(gd->fdt_blob, parent);
}
static inline int dev_read_simple_addr_cells(const struct udevice *dev)