linux-kernel - Re: [PATCH 2/5] watchdog: sp805: add 'timeout-sec' DT property support

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Message-ID: <20180522205727.GC16363@roeck-us.net>
Date:   Tue, 22 May 2018 13:57:27 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Ray Jui <ray.jui@...adcom.com>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Frank Rowand <frowand.list@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH 2/5] watchdog: sp805: add 'timeout-sec' DT property
 support

On Tue, May 22, 2018 at 11:47:17AM -0700, Ray Jui wrote:
> Add support for optional devicetree property 'timeout-sec'.
> 'timeout-sec' is used in the driver if specified in devicetree.
> Otherwise, fall back to driver default, i.e., 60 seconds
> 
> Signed-off-by: Ray Jui <ray.jui@...adcom.com>
> Reviewed-by: Scott Branden <scott.branden@...adcom.com>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/watchdog/sp805_wdt.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c
> index 03805bc..1484609 100644
> --- a/drivers/watchdog/sp805_wdt.c
> +++ b/drivers/watchdog/sp805_wdt.c
> @@ -230,7 +230,14 @@ sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id)
>  	spin_lock_init(&wdt->lock);
>  	watchdog_set_nowayout(&wdt->wdd, nowayout);
>  	watchdog_set_drvdata(&wdt->wdd, wdt);
> -	wdt_setload(&wdt->wdd, DEFAULT_TIMEOUT);
> +
> +	/*
> +	 * If 'timeout-sec' devicetree property is specified, use that.
> +	 * Otherwise, use DEFAULT_TIMEOUT
> +	 */
> +	wdt->wdd.timeout = DEFAULT_TIMEOUT;
> +	watchdog_init_timeout(&wdt->wdd, 0, &adev->dev);
> +	wdt_setload(&wdt->wdd, wdt->wdd.timeout);
>  
>  	ret = watchdog_register_device(&wdt->wdd);
>  	if (ret) {
> -- 
> 2.1.4
>