Hi Biju, On Sun, Dec 10, 2023 at 10:50 AM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote: > > -----Original Message----- > > From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> > > Sent: Friday, December 1, 2023 3:42 PM > > Subject: Re: [PATCH 6/6] arm64: defconfig: Enable Renesas DA9062 defconfig > > > > On Fri, Dec 1, 2023 at 4:02 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> > > wrote: > > > > From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> On Fri, Dec 1, 2023 > > > > at 12:09 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> > > > > wrote: > > > > > Enable the config for the Renesas DA9062 PMIC and RTC, as it is > > > > > populated on RZ/G2UL SMARC EVK. > > > > > > > > > > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> > > > > > > > > Thanks for your patch! > > > > > > > > LGTM, but I would have expected (at least) > > > > > > > > CONFIG_INPUT_DA9063_ONKEY=m > > > > > > > > too, cfr. my comments on patch 5/6. > > > > > > I have tested this, but I get "da9063-onkey da9062-onkey: error -ENXIO: > > IRQ ONKEY not found" > > > So, I won't be able to test onkey events. So plaaning to disable this > > node. > > > > Indeed, currently drivers/input/misc/da9063_onkey.c requires an interrupt > > to function. I wonder if it can be made to work using a timer and pure > > polling... > > Yes, that is possible by either adding a debugfs to enable polling for testing. > > Or > > a device tree property for adding poll delay, so that one can have polling support to test onkey driver. I would go for the latter, cfr. poll-interval in Documentation/devicetree/bindings/input/gpio-keys.yaml. > Basically, on a production system we should avoid polling as it unnecessarily wakeup the system. Wouldn't polling (by Linux) only happen when the system is already awake? I think the DA9063 itself handles the onkey when the system is asleep. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx 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