[U-Boot] [PATCH 5/5] Add env var giving the board revision

Wolfgang Denk wd at denx.de
Sun Aug 12 13:58:49 CEST 2012


Dear =?utf-8?Q?Beno=C3=AEt_Th=C3=A9baudeau?=,

In message <1666183421.2304101.1344712292461.JavaMail.root at advansee.com> you wrote:
> 
> I have searched such a usage in the tree, but did not find any, so this should
> not break anything.

You cannot expect to see the real, production environments in the
mainline source tree.

> It could be renamed to hwrev, board_rev or whatever you like. This is not really
> an issue. Its purpose is the board hardware revision. The CPU revision can often
> be read from the CPU and is printed upon startup. U-Boot's revision already has
> the ver env var and the version command. On the contrary, the board revision can
> not always be determined by analyzing the hardware (OTP, fuses, EEPROM, GPIOs,
> etc.), so it can be useful to have an official env var to store it in the backed
> up env, exactly like for the serial# env var that can not always be stored in
> some dedicated hardware location.

As mentioned before, I don't see need for such a thing in general.
Any such use is highly board specific, and vendors use different ways
to address this.

I don't intend to apply this patch, sorry.

Best regards,

Wolfgang Denk

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