dm: add dev_read_u32()
dev_read_u32_default() always returns something even when the property
is missing. So, it is impossible to do nothing in the case. One
solution is to use ofnode_read_u32() instead, but adding dev_read_u32()
will be helpful.
BTW, Linux has an equvalent function, device_property_read_u32();
it is clearer that it reads a property. I cannot understand the
behavior of dev_read_u32() from its name.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/core/read.c b/drivers/core/read.c
index f346cc1..758d400 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -10,6 +10,11 @@
#include <mapmem.h>
#include <dm/of_access.h>
+int dev_read_u32(struct udevice *dev, const char *propname, u32 *outp)
+{
+ return ofnode_read_u32(dev_ofnode(dev), propname, outp);
+}
+
int dev_read_u32_default(struct udevice *dev, const char *propname, int def)
{
return ofnode_read_u32_default(dev_ofnode(dev), propname, def);