[Skiboot] [PATCH] opal-prd/hostboot-interface: Add API comment regarding nanosleep ranges

[Jeremy Kerr]

Signed-off-by: Jeremy Kerr <jk at ozlabs.org>
---
 external/opal-prd/hostboot-interface.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/external/opal-prd/hostboot-interface.h b/external/opal-prd/hostboot-interface.h
index 3a7ca19..603b767 100644
--- a/external/opal-prd/hostboot-interface.h
+++ b/external/opal-prd/hostboot-interface.h
@@ -165,6 +165,10 @@ struct host_interfaces {
 
 	/**
 	 * @brief Delay/sleep for at least the time given
+	 *
+	 * The sleep time must be normalised; i_nano_seconds should be between
+	 * 0 and 999999999.
+	 *
 	 * @param[in] seconds
 	 * @param[in] nano seconds
 	 * @platform FSP,OpenPOWER
-- 
2.7.4