On 16/11/2024 20:36:54+0100, Alexandre Belloni wrote:
> On 15/11/2024 14:48:58-0500, Frank Li wrote:
> > From: Jacky Bai <ping.bai@xxxxxxx>
> >
> > Enable the RTC by default even when no valid time is set to ensure the
> > RTC's time read and alarm functions work properly. Without this, running
> > hwclock results in the following error:
> >
> > hwclock: ioctl(RTC_RD_TIME) to /dev/rtc0 to read the time failed: Invalid argument
> >
>
>
> What is providing your hwclock and which version does it have?
This is a bug in util-linux that needs to be fixed.
>
>
> > Fixes: eb7b85853c38 ("rtc: bbnsm: Add the bbnsm rtc support")
> > Signed-off-by: Jacky Bai <ping.bai@xxxxxxx>
> > Signed-off-by: Dong Aisheng <aisheng.dong@xxxxxxx>
> > Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> > ---
> > drivers/rtc/rtc-nxp-bbnsm.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/rtc/rtc-nxp-bbnsm.c b/drivers/rtc/rtc-nxp-bbnsm.c
> > index fa3b0328c7a25..6610db2f75125 100644
> > --- a/drivers/rtc/rtc-nxp-bbnsm.c
> > +++ b/drivers/rtc/rtc-nxp-bbnsm.c
> > @@ -189,6 +189,9 @@ static int bbnsm_rtc_probe(struct platform_device *pdev)
> > /* clear all the pending events */
> > regmap_write(bbnsm->regmap, BBNSM_EVENTS, 0x7A);
> >
> > + /* Enable the Real-Time counter */
> > + regmap_update_bits(bbnsm->regmap, BBNSM_CTRL, RTC_EN_MSK, RTC_EN);
> > +
> > device_init_wakeup(&pdev->dev, true);
> > dev_pm_set_wake_irq(&pdev->dev, bbnsm->irq);
> >
> > --
> > 2.34.1
> >
>
> --
> Alexandre Belloni, co-owner and COO, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com
--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
