Re: [PATCH 4/6] clocksource: realtek: Add timer driver for rtl-otto platforms

From: Krzysztof Kozlowski
Date: Sun Jun 23 2024 - 03:13:28 EST


On 21/06/2024 06:27, Chris Packham wrote:
> The timer/counter block on the Realtek SoCs provides up to 5 timers. It
> also includes a watchdog timer but this isn't being used currently (it
> will be added as a separate wdt driver).
>
> One timer will be used per CPU as a local clock event generator. An
> additional timer will be used as an overal stable clocksource.
>
> Signed-off-by: Markus Stockhausen <markus.stockhausen@xxxxxx>
> Signed-off-by: Sander Vanheule <sander@xxxxxxxxxxxxx>
> Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>

...

> + pr_err("timer registration failed\n");
> + for_each_possible_cpu(cpu_rollback) {
> + if (cpu_rollback == cpu)
> + break;
> + to = per_cpu_ptr(&rttm_to, cpu_rollback);
> + timer_of_cleanup(to);
> + }
> +
> + return -EINVAL;
> +}
> +
> +TIMER_OF_DECLARE(otto_timer, "realtek,otto-timer", rttm_probe);

Undocumented compatible.

Best regards,
Krzysztof