Hi Geert, Am 08.04.2015 um 21:20 schrieb Geert Uytterhoeven: > On Tue, Apr 7, 2015 at 7:06 PM, Stefan Wahren <[email protected]> wrote: >> [...] >> >> thanks for the good explanation. After looking into the reference manual [1] >> of >> the i.MX28 i still can't decide if the subsystem generate the interrupts as a >> whole or >> as a logical group. I only found this para in chapter 11.11: >> >> The VDDA_BO_IRQ, VDDD_BO_IRQ, VDDIO_BO_IRQ, and BATT_BO_IRQ each >> have their own interrupt line back to the interrupt collector. >> However, the remaining five interrupts—VDD5V_GT_VDDIO_IRQ, DC_OK_IRQ, >> VBUSVALID_IRQ, LINREG_OK_IRQ and PSWITCH_IRQ—all share a single >> interrupt line. In this case, software must read the interrupt status >> bits to discover which event caused the interrupt. >> >> In my case DC_OK_IRQ and PSWITCH_IRQ are relevant. >> >> Maybe someone else has a idea? > Perhaps you can implement an interrupt-controller to handle the multiplexing > of the 5 remaining interrupts?
Could you please explain the benefit / reason of this approach? > > Can they be disabled/enabled individually? Yes. What are the consequences? Thanks Stefan > >> Thanks Stefan >> >> [1] - http://cache.freescale.com/files/dsp/doc/ref_manual/MCIMX28RM.pdf >> >> Document Number: MCIMX28RM >> Rev 2, 08/2013 >> >> > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- > [email protected] > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like > that. > -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
