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-rw-r--r--utils/v4l2-ctl/v4l2-ctl-common.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/utils/v4l2-ctl/v4l2-ctl-common.cpp b/utils/v4l2-ctl/v4l2-ctl-common.cpp
index e4ec4b9..9d0ce3b 100644
--- a/utils/v4l2-ctl/v4l2-ctl-common.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-common.cpp
@@ -67,6 +67,8 @@ void common_usage(void)
" -e, --out-device <dev> use device <dev> for output streams instead of the\n"
" default device as set with --device\n"
" if <dev> starts with a digit, then /dev/video<dev> is used\n"
+ " -E, --export-device <dev> use device <dev> for exporting DMA buffers\n"
+ " if <dev> starts with a digit, then /dev/video<dev> is used\n"
" -h, --help display this help message\n"
" --help-all all options\n"
" --help-io input/output options\n"

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