On Mon, Oct 8, 2012 at 10:39 AM, Tomasz Figa <[email protected]> wrote:
> This patch modifies the pinctrl-samsung driver to register one GPIO chip
> per pin bank, instead of a single chip for all pin banks of the
> controller.
>
> It simplifies GPIO accesses a lot (constant time instead of looping
> through the list of banks to find the right one) and should have a good
> effect on performance of any bit-banging driver.
>
> In addition it allows to reference GPIO pins by a phandle to the bank
> node and a local pin offset inside of the bank (similar to previous
> gpiolib driver), which is more clear and readable than using indices
> relative to the whole pin controller.
>
> Example:
> device {
> /* ... */
> gpios = <&gpk0 4 0>;
> /* ... */
> };
>
> Signed-off-by: Tomasz Figa <[email protected]>
This also looks good (and I think it has been discussed before)
so needs to be applied in isolation from the regs-to-DT stuff.
Yours,
Linus Walleij
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