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-rw-r--r--include/hw/qdev-clock.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/hw/qdev-clock.h b/include/hw/qdev-clock.h
index a897f7c..64ca4d2 100644
--- a/include/hw/qdev-clock.h
+++ b/include/hw/qdev-clock.h
@@ -70,6 +70,8 @@ Clock *qdev_get_clock_out(DeviceState *dev, const char *name);
*
* Set the source clock of input clock @name of device @dev to @source.
* @source period update will be propagated to @name clock.
+ *
+ * Must be called before @dev is realized.
*/
void qdev_connect_clock_in(DeviceState *dev, const char *name, Clock *source);