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From: Chris Packham <Chris.Packham@alliedtelesis.co.nz>
To: Antoniu Miclaus <antoniu.miclaus@analog.com>,
	Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	"Jean Delvare" <jdelvare@suse.com>,
	Guenter Roeck <linux@roeck-us.net>,
	"linux-rtc@vger.kernel.org" <linux-rtc@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-hwmon@vger.kernel.org" <linux-hwmon@vger.kernel.org>
Subject: Re: [PATCH v9 2/2] rtc: max31335: add driver support
Date: Mon, 19 Feb 2024 02:51:57 +0000	[thread overview]
Message-ID: <1a51a8ac-e2a6-4054-b91d-c860913b7385@alliedtelesis.co.nz> (raw)
In-Reply-To: <20231120120114.48657-2-antoniu.miclaus@analog.com>

Hi All,

I'm looking at folding this into the rest of the max313xx support (but 
I'll stick with the max31335 name since that's landed) and I noticed a 
problem.

On 21/11/23 01:00, Antoniu Miclaus wrote:
> RTC driver for MAX31335 ±2ppm Automotive Real-Time Clock with
> Integrated MEMS Resonator.
>
> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
<snip>
> +
> +static bool max31335_volatile_reg(struct device *dev, unsigned int reg)
> +{
> +	/* time keeping registers */
> +	if (reg >= MAX31335_SECONDS &&
> +	    reg < MAX31335_SECONDS + MAX31335_TIME_SIZE)
> +		return true;
> +
> +	/* interrupt status register */
> +	if (reg == MAX31335_INT_EN1_A1IE)
> +		return true;
Presumably this should be something else as MAX31335_INT_EN1_A1IE is a 
bitfield offset not a register.  Based on the other chips I'm guessing 
this should be `reg == MAX31335_STATUS1`. I'll try to incorporate a fix 
into my update but someone might want to fix it up for stable.
> +
> +	/* temperature registers */
> +	if (reg == MAX31335_TEMP_DATA_MSB || MAX31335_TEMP_DATA_LSB)
> +		return true;
> +
> +	return false;
> +}
> +

  reply	other threads:[~2024-02-19  2:57 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-20 12:00 [PATCH v9 1/2] dt-bindings: rtc: max31335: add max31335 bindings Antoniu Miclaus
2023-11-20 12:00 ` [PATCH v9 2/2] rtc: max31335: add driver support Antoniu Miclaus
2024-02-19  2:51   ` Chris Packham [this message]
2024-02-19  9:04     ` Miclaus, Antoniu
2024-01-15 22:38 ` [PATCH v9 1/2] dt-bindings: rtc: max31335: add max31335 bindings Alexandre Belloni

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