[PATCH] doc:fix typo in 'mmc write' example

[Simon Glass]

Hi Shirokov,

On Fri, 21 Apr 2023 at 22:48, Shirokov Alexander
<shirokovalexs at gmail.com> wrote:
>
> Hello Simon,
>
> Thanks for your answer.Using 0x explicitly shows that we are working with HEX.
> But without the prefix, it looks like a decimal number. And it's more confusing
> when the number of blocks looks like a decimal but is interpreted as HEX.
>
> Here is an example:
>
>     mmc write 0x40000000 0x5000 16
>     MMC write: dev # 1, block # 20480, count 22 ... 22 blocks written: OK
>
> This looks better. If we know that all number is HEX by default
>     mmc write 40000000 5000 16
>
> Do we have to use something like this?

The convention in U-Boot is to use hex, since it is a bootloader. So
when you add 0x prefixes it confuses people into thinking that
otherwise it would be decimal.

BTW we did discuss adding a decimal prefix but they did not get much
support at the time.

Regards,
Simon

[1] https://patchwork.ozlabs.org/project/uboot/patch/20210720132940.1171011-13-sjg@chromium.org/
[2] https://patchwork.ozlabs.org/project/uboot/patch/20210724150341.243074-13-sjg@chromium.org/