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-rw-r--r--doc/usage/cmdline.rst6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/usage/cmdline.rst b/doc/usage/cmdline.rst
index 2d5127c9554..88f18c974c8 100644
--- a/doc/usage/cmdline.rst
+++ b/doc/usage/cmdline.rst
@@ -85,3 +85,9 @@ useful::
=> pmic write 2 0177
=> pmic read 2
0x02: 0x00007f
+
+It is possible to use a `0x` prefix to use a hex value if that is more
+convenient::
+
+ => i2c speed 0x30000
+ Setting bus speed to 196608 Hz