Re: [PATCH RESEND] clocksource/drivers/timer-ti-dm: Don't fail probe if int not found

[Bryan Brattlof]

On October 10, 2024 thus sayeth Judith Mendez:
> Some timers may not have an interrupt routed to
> the A53 GIC, but the timer PWM functionality can still
> be used by Linux Kernel. Therefore, do not fail probe
> if interrupt is not found and ti,timer-pwm exists.
> 
> Fixes: df28472a1b28 ("ARM: OMAP: dmtimer: platform driver")
> Signed-off-by: Judith Mendez <jm@xxxxxx>
> ---
> Changes since v1:
> - Rebased, add to CC list, add fixes tag
> ---
>  drivers/clocksource/timer-ti-dm.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c
> index b7a34b1a975e..1b61fefed213 100644
> --- a/drivers/clocksource/timer-ti-dm.c
> +++ b/drivers/clocksource/timer-ti-dm.c
> @@ -1104,8 +1104,12 @@ static int omap_dm_timer_probe(struct platform_device *pdev)
>  		return  -ENOMEM;
>  
>  	timer->irq = platform_get_irq(pdev, 0);
> -	if (timer->irq < 0)
> -		return timer->irq;
> +	if (timer->irq < 0) {
> +		if (of_property_read_bool(dev->of_node, "ti,timer-pwm"))
> +			dev_err(dev, "Did not find timer interrupt, timer usable in PWM mode only\n");

Is this really an error? or more of a dev_info() type problem. It looks
like we changed how we integrated the timer in K3 chips that broke some 
assumptions made in OMAP.

~Bryan