README: sync the usbsdmux -h output with the actual output

A README that does not match the behaviour of the program can be quite confusing. Sync the usbsdmux -h output with the actual output. Signed-off-by: Leonard Göhrs <[email protected]>
linux-automation · Dec 21, 2023 · 326cb90 · 326cb90
1 parent d802776
commit 326cb90
Showing 1 changed file with 18 additions and 15 deletions.
diff --git a/README.rst b/README.rst
@@ -65,21 +65,24 @@ command invocations:
 
 .. code-block:: text
 
-   $ usbsdmux -h
-   usage: usbsdmux [-h] SG {get,dut,client,host,off}
-
-   positional arguments:
-     SG                    /dev/sg* to use
-     {get,dut,client,host,off}
-			   Action:
-			   get - return selected mode
-			   dut - set to dut mode
-			   client - set to dut mode (alias for dut)
-			   host - set to host mode
-			   off - set to off mode
-
-   optional arguments:
-     -h, --help            show this help message and exit
+    $ usbsdmux -h
+    usage: usbsdmux [-h] [--json] SG {get,dut,client,host,off,gpio,info} ...
+
+    positional arguments:
+      SG                    /dev/sg* to use
+      {get,dut,client,host,off,gpio,info}
+                            Supply one of the following commands to interact with the device
+        get                 Read the current state of the USB-SD-Mux
+        dut                 Switch to the DUT
+        client              Switch to the DUT
+        host                Switch to the host
+        off                 Disconnect from host and DUT
+        gpio                Manipulate a GPIO (open drain output only)
+        info                Show information about the SD card
+
+    options:
+      -h, --help            show this help message and exit
+      --json                Format output as json. Useful for scripting.
 
 Using as root
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