On Thu, Nov 25, 2021 at 4:21 PM <arthur@xxxxxxxxxxxx> wrote: > > From: Patrick Rudolph <patrick.rudolph@xxxxxxxxxxxxx> > > Add support for I2C GPIO expanders: > > - cy8c9520 > - cy8c9540 > - cy8c9560 > > Add basic support for GPIO input, output, direction, pin config and > interrupt handling. > > The chip uses an optional regulator called vdd-supply. > The ngpios devicetree property can be used to specify less GPIOs if not > all are connected. > > Tested: > - Input > - Output > - Direction > - Pullup > - Pulldown > - IRQ support Thanks (*really* appreciate this effort, since I have even hardware to test and had thought of developing the driver myself)! And unfortunately NAK from me. Please do it as a pin control. I specifically had in mind to have PWM stitching with the pin control subsystem with this chip taken as an example. -- With Best Regards, Andy Shevchenko