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cmd: fix long text for sound command

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Make it clear that if only 1 parameter is provided this is the duration.

The ISO symbol for hertz is Hz.

Fixes: c0c88533ff ("Sound: Add command for audio playback")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Heinrich Schuchardt 2022-12-04 16:33:07 +01:00
parent 968eaaeaa7
commit ff414fcc44
1 changed files with 1 additions and 1 deletions
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2
cmd/sound.c
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@ -86,5 +86,5 @@ U_BOOT_CMD(
sound, 4, 1, do_sound,
"sound sub-system",
"init - initialise the sound driver\n"
"sound play [len] [freq] - play a sound for len ms at freq hz\n"
"sound play [len [freq]] - play a sound for len ms at freq Hz\n"
);