dm: core: implement dev_map_physmem()
This API helps to map physical register addresss pace of device to
virtual address space easily. Its just a wrapper around map_physmem()
with MAP_NOCACHE flag.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Suggested-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
diff --git a/include/dm/device.h b/include/dm/device.h
index f03bcd3..1bfcf3b 100644
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -467,6 +467,19 @@
void *dev_get_addr_ptr(struct udevice *dev);
/**
+ * dev_map_physmem() - Read device address from reg property of the
+ * device node and map the address into CPU address
+ * space.
+ *
+ * @dev: Pointer to device
+ * @size: size of the memory to map
+ *
+ * @return mapped address, or NULL if the device does not have reg
+ * property.
+ */
+void *dev_map_physmem(struct udevice *dev, unsigned long size);
+
+/**
* dev_get_addr_index() - Get the indexed reg property of a device
*
* @dev: Pointer to a device