Re: [PATCH v3 14/42] power: reset: Add a driver for the ep93xx reset

[Andy Shevchenko <andy@xxxxxxxxxx>]

On Thu, Jul 20, 2023 at 02:29:14PM +0300, Nikita Shubin via B4 Relay wrote:
> From: Nikita Shubin <nikita.shubin@xxxxxxxxxxx>
> 
> Implement the reset behaviour of the various EP93xx SoCS in drivers/power/reset.
> 
> It used to be located in arch/arm/mach-ep93xx.

...

> +// SPDX-License-Identifier: (GPL-2.0)

Are you sure this is correct form? Have you checked your patches?

...

> +#include <linux/of_device.h>

Do you need this?
Or maybe you need another (of*.h) one?

...

> +	/* Issue the reboot */
> +	ep93xx_devcfg_set_clear(priv->map, EP93XX_SYSCON_DEVCFG_SWRST, 0x00);
> +	ep93xx_devcfg_set_clear(priv->map, 0x00, EP93XX_SYSCON_DEVCFG_SWRST);


> +	mdelay(1000);

Atomic?! Such a huge delay must be explained, esp. why it's atomic.

> +	pr_emerg("Unable to restart system\n");
> +	return NOTIFY_DONE;

...

> +	err = register_restart_handler(&priv->restart_handler);
> +	if (err)
> +		return dev_err_probe(dev, err, "can't register restart notifier\n");

> +	return err;

	return 0;

-- 
With Best Regards,
Andy Shevchenko