[PATCH RESEND v2 1/2] cmd: bind: Try to improve the (un)bind help

[Marek Vasut]

On 10/2/23 15:46, Miquel Raynal wrote:
> While it may sound totally obvious for the regular U-Boot developer to
> get the parameters of the bind/unbind commands from the output of 'dm
> tree', it did not felt straightforward to me until I was explicitly
> told to look there. And even when I knew the command, I did not make a
> direct link between the arguments of this command and the columns
> returned by 'dm tree'.
> 
> Several of us lost a lot of time because of that, I would like to kindly
> help other users by slightly improving this textual line. Unfortunately,
> because of how this string is used (like within the 'help' command) I
> cannot detail much more, but at least the pointer is there.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
> ---
> Resend: no change.
> 
> Changes in v2:
> * Moved the details in the long text section as suggested by Heinrich.
> * Rephrased the help text as well, not fully following Heinrich
>    suggestion, but taking inspiration from it.
> ---
>   cmd/bind.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/cmd/bind.c b/cmd/bind.c
> index 4d1b7885e60..be0d4d2a711 100644
> --- a/cmd/bind.c
> +++ b/cmd/bind.c
> @@ -246,6 +246,8 @@ U_BOOT_CMD(
>   	"Bind a device to a driver",
>   	"<node path> <driver>\n"
>   	"bind <class> <index> <driver>\n"
> +	"Use 'dm tree' to list all devices registered in the driver model,\n"
> +	"their path, class, index and current driver.\n"
>   );
>   
>   U_BOOT_CMD(
> @@ -254,4 +256,6 @@ U_BOOT_CMD(
>   	"<node path>\n"
>   	"unbind <class> <index>\n"
>   	"unbind <class> <index> <driver>\n"
> +	"Use 'dm tree' to list all devices registered in the driver model,\n"
> +	"their path, class, index and current driver.\n"

'dm tree' depends on CMD_DM , you might need some if (IS_ENABLED()) here.