[U-Boot] [PATCH 1/3] Add support for PCA953x I2C gpio devices

[Wolfgang Denk]

Dear Peter Tyser,

In message <1224800639-31350-2-git-send-email-ptyser at xes-inc.com> you wrote:
> Initial support for NXP's 4 and 8 bit I2C gpio expanders
> (eg pca9537, pca9557, etc). The CONFIG_PCA953X define
> enables support for the devices while the CONFIG_CMD_PCA953X
> define enables the pca953x command.

I'm not sure if we need such a detailed  level  of  access  to  these
chips.  We  already  have  a  couple of similar I/O expanders in some
boards, for example implemente in some PICs. See for example the "pic
read" / "pic write" conde in board/lwmon/lwmon.c etc.

I think we should generalize this - and more than read / write isn't
really needed, or is it?

Best regards,

Wolfgang Denk

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