[PATCH v2] yavta: Fix usage documentation for --field option

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The --field option takes an argument selecting the field order. Update
the usage text to reflect this.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
* Changes since v1
- List all valid filed values.
---
 yavta.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/yavta.c b/yavta.c
index 4e5b62a96eb66f8d..1129ab245966384b 100644
--- a/yavta.c
+++ b/yavta.c
@@ -2290,7 +2290,9 @@ static void usage(const char *argv0)
 	printf("    --enum-formats		Enumerate formats\n");
 	printf("    --enum-inputs		Enumerate inputs\n");
 	printf("    --fd                        Use a numeric file descriptor insted of a device\n");
-	printf("    --field			Interlaced format field order\n");
+	printf("    --field field		Set the format field order\n");
+	printf("\tValid values for field are none, top, bottom, interlaced, seq-tb, seq-bt\n");
+	printf("\talternate, interlaced-tb and interlaced-bt.\n");
 	printf("    --log-status		Log device status\n");
 	printf("    --no-query			Don't query capabilities on open\n");
 	printf("    --offset			User pointer buffer offset from page start\n");
-- 
2.31.1




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