dm: core: add support for getting register address and size
Current dev_read_*() API lacks support to get address and size
of a "reg" property by name or index. Add support for the same.
Livetree support has been added but not tested on real hardware.
The existing unit tests testing reading address from device-tree
have been updated to test address as well as size.
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
diff --git a/drivers/core/read.c b/drivers/core/read.c
index 1a044b0..8b5502d 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -82,6 +82,15 @@
return devfdt_get_addr_index(dev, index);
}
+fdt_addr_t dev_read_addr_size_index(struct udevice *dev, int index,
+ fdt_size_t *size)
+{
+ if (ofnode_is_np(dev_ofnode(dev)))
+ return ofnode_get_addr_size_index(dev_ofnode(dev), index, size);
+ else
+ return devfdt_get_addr_size_index(dev, index, size);
+}
+
void *dev_remap_addr_index(struct udevice *dev, int index)
{
fdt_addr_t addr = dev_read_addr_index(dev, index);
@@ -102,6 +111,17 @@
return dev_read_addr_index(dev, index);
}
+fdt_addr_t dev_read_addr_size_name(struct udevice *dev, const char *name,
+ fdt_size_t *size)
+{
+ int index = dev_read_stringlist_search(dev, "reg-names", name);
+
+ if (index < 0)
+ return FDT_ADDR_T_NONE;
+ else
+ return dev_read_addr_size_index(dev, index, size);
+}
+
void *dev_remap_addr_name(struct udevice *dev, const char *name)
{
fdt_addr_t addr = dev_read_addr_name(dev, name);