On Thu, Mar 31, 2016 at 3:58 AM, Linus Walleij <[email protected]> wrote: > On Fri, Mar 25, 2016 at 3:48 PM, Rob Herring <[email protected]> wrote: >> On Thu, Mar 24, 2016 at 05:50:09PM +0100, Neil Armstrong wrote: >>> 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 <[email protected]> > >>> + - 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
