On Thu, Mar 31, 2016 at 3:58 AM, Linus Walleij [off-list ref] wrote:

On Fri, Mar 25, 2016 at 3:48 PM, Rob Herring [off-list ref] wrote:

quoted

On Thu, Mar 24, 2016 at 05:50:09PM +0100, Neil Armstrong wrote:

quoted

Add pinctrl and gpio DT bindings for PLX Technology OXNAS SoC Family.
This version supports the ARM926EJ-S based OX810SE SoC with 34 IO pins.

Signed-off-by: Neil Armstrong <redacted>

quoted

quoted

+ - plxtech,gpio-bank: Specifies which bank a controller owns.

How is this used?

That is used to give a unique ID number to the bank.

Hardware often need this to cross-reference pin controllers
to GPIO banks.

I should add it as "gpio-bank" to the generic bindings
instead, several platforms already use this and there is
no point in having a vendor prefix in front of it.

Okay, now it is clearer. I don't want this documented as a common
property because I don't want to encourage it's use. I only see 2
users currently: ST and PIC32.

Looking at one example, it appears to be redundant already.
nomadik-gpio-chips property already gives you the index. The index of
the phandles is the bank numbering. PIC32 could do the same.

Rob