On Tue, Nov 30, 2021 at 06:19:12PM +0200, Andy Shevchenko wrote: > On Tue, Nov 30, 2021 at 06:14:01PM +0200, Andy Shevchenko wrote: > > On Tue, Nov 30, 2021 at 04:41:23PM +0100, Bartosz Golaszewski wrote: > > ... > > > Not sure I understand the proposal. Can you provide couple of (simplest) > > examples? > > > > And also it sounds like reinventing a wheel. What problem do you have that you > > need to solve this way? > > Have you seen these: > drivers/gpio/gpio-dwapb.c > drivers/mfd/intel_quark_i2c_gpio.c > ? > > GPIO driver has a main (controller level) node along with children on per bank > basis. Currently it works with the provided approach (see second driver). Btw, may be helpful to debug swnodes application https://lore.kernel.org/lkml/20210327222012.54103-3-andriy.shevchenko@xxxxxxxxxxxxxxx/#t -- With Best Regards, Andy Shevchenko