doc: imgtool: update align description
Update the --align option values.
Add its description.
Delete [required], as it is optional now.
Signed-off-by: Andrej Butok <andrey.butok@nxp.com>
diff --git a/docs/imgtool.md b/docs/imgtool.md
index 9d50e67..b4dc3b5 100644
--- a/docs/imgtool.md
+++ b/docs/imgtool.md
@@ -61,7 +61,7 @@
Options:
-k, --key filename
--public-key-format [hash|full]
- --align [1|2|4|8] [required]
+ --align [1|2|4|8|16|32] Alignment used by swap update modes.
-v, --version TEXT [required]
-s, --security-counter TEXT Specify the value of security counter. Use
the `auto` keyword to automatically generate
diff --git a/scripts/imgtool/main.py b/scripts/imgtool/main.py
index a38abe7..9dd033c 100755
--- a/scripts/imgtool/main.py
+++ b/scripts/imgtool/main.py
@@ -377,7 +377,8 @@
'keyword to automatically generate it from the image version.')
@click.option('-v', '--version', callback=validate_version, required=True)
@click.option('--align', type=click.Choice(['1', '2', '4', '8', '16', '32']),
- required=False)
+ required=False,
+ help='Alignment used by swap update modes.')
@click.option('--max-align', type=click.Choice(['8', '16', '32']),
required=False,
help='Maximum flash alignment. Set if flash alignment of the '