On 2017-05-27 15:48, Andy Shevchenko wrote: > On Fri, May 26, 2017 at 7:02 PM, Jan Kiszka <jan.kiszka@xxxxxxxxxxx> wrote: >> On the SIMATIC, IOT2040 only a single pin is exportable as GPIO, the >> rest is required to operate the UART. To allow modeling this case, >> expand the platform device data structure to specify a (consecutive) pin >> subset for exporting by the gpio-exar driver. > >> + unsigned int first_pin; > >> + if (device_property_read_u32(&pdev->dev, "first_pin", &first_pin) < 0 || > > And again, we need to follow the rules of the device property > bindings. (No underscores - use dashes; name should be registered). > > Without Rafael's / Mika's and Rob's opinions I would not go with a > such name even for internal property. > > DWC3 (USB) for example is still using "linux," prefix. I dunno if it's > the case here, I mean can or can't we use similar approach. > >> + device_property_read_u32(&pdev->dev, "npins", &npins) < 0) > > "ngpios" > Yeah, forgot to change all this before reposting. Will make the names DT-alike. But there is nothing to register: DT shall stay away from this device. Jan -- Siemens AG, Corporate Technology, CT RDA ITP SES-DE Corporate Competence Center Embedded Linux -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html