[U-Boot] [RFC] setting pio modes for IDE devices

[Wolfgang Denk]

Dear "Steven A. Falco",

In message <48A35533.1010901 at harris.com> you wrote:
> The following patch adds the ability to call-out from the ide_ident
> routine to a board-specific routine to set the PIO mode of an attached
> device.
> 
> This feature is controlled by the preprocessor variable CONFIG_TUNE_CFA.

What does CFA mean?

> cmd_ide.c is modified to use the "drive identify information" read from the
> device to compute a pio mode in the range 0 to 6.  This is then passed
> to a board-specific routine, ide_set_piomode, to set the mode in
> hardware.
> 
> Two other files are touched: file ata.h, to include word 163, which is the
> "advanced CF parameters", and file ide.h, to add a prototype for the
> board-specific routine (again controlled by the CONFIG_TUNE_CFA
> variable).

Is there a specific reason for using #ifdef's instead of a weak
function?

Best regards,

Wolfgang Denk

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