[U-Boot] [PATCH 1/7] powerpc/mpc8xxx: Enable entering DDR debugging by key press

[Wolfgang Denk]

Dear York Sun,

In message <1357323245-12455-1-git-send-email-yorksun at freescale.com> you wrote:
>...
> CONFIG_FSL_DDR_INTERACTIVE needs to be defined in header file. To enter the
> debug mode by key press, press key 'd' shortly after reset, like one would
> do to abort auto booting. It is fixed to lower case 'd' at this moment.
...
> --- a/doc/README.fsl-ddr
> +++ b/doc/README.fsl-ddr
> @@ -268,6 +268,13 @@ be activated by saving an environment variable "ddr_interactive". The value
>  doesn't matter. Once activated, U-boot prompts "FSL DDR>" before enabling DDR
>  controller. The available commands can be seen by typing "help".
>  
> +Another way to enter debug mode without using environment variable is to send
> +a key press during boot, like one would do to abort auto boot. To save booting
> +time, no additioal delay is added so the window to send the key press is very
> +short. For example, user can send the key press using reset command followed by
> +hitting enter key twice. In case of power on reset, user can keep hitting any
> +key while applying the power.

The documentation here does not mention the 'd' key at all.  Guess it
should?

Best regards,

Wolfgang Denk

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