Re: [PATCH v1 2/2] Documentation: user: Add OTP support and parameter descriptions

[Sascha Hauer <s.hauer@pengutronix.de>]

On Thu, Jan 30, 2025 at 01:08:14PM +0100, Oleksij Rempel wrote:
> Provide an overview of OTP support in Barebox.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> ---
>  Documentation/user/otp.rst         | 199 +++++++++++++++++++++++++++++
>  Documentation/user/user-manual.rst |   1 +
>  2 files changed, 200 insertions(+)
>  create mode 100644 Documentation/user/otp.rst
> 
> diff --git a/Documentation/user/otp.rst b/Documentation/user/otp.rst

...

> +    bsec0.permanent_write_enable=1
> +
> +    # Write directly to an OTP register (bypasses shadow)
> +    mw -l -d /dev/stm32-bsec 0x00000170+4 0x12345678
> +
> +    # Disable OTP write mode (future writes go to shadow, if available)
> +    bsec0.permanent_write_enable=0
> +
> +Example 2: Using Shadow Memory Without Committing
> +::
> +
> +    # Ensure shadow writes are enabled
> +    bsec0.permanent_write_enable=0
> +
> +    # Write to shadow memory (not permanent yet)
> +    mw -l -d /dev/imx-ocotp 0x20+4 0xAABBCCDD

Please drop the '+4' from the mw commands. The length is detected from
the number of words written and the '+4' has no meaning for mw.

Sascha

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