linux-kernel - Re: [PATCH v3 3/8] dt-bindings: rtc: isl12022: add bindings for battery alarm trip levels

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Date:   Sat, 17 Jun 2023 10:12:58 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-rtc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/8] dt-bindings: rtc: isl12022: add bindings for
 battery alarm trip levels

On 15/06/2023 12:58, Rasmus Villemoes wrote:
> The isl12022 has a built-in support for monitoring the voltage of the
> backup battery, and setting bits in the status register when that
> voltage drops below two predetermined levels (usually 85% and 75% of
> the nominal voltage). However, since it can operate at wide range of
> battery voltages (2.5V - 5.5V), one must configure those trip levels
> according to which battery is used on a given board.
> 
> Add bindings for defining these two trip levels. While the register
> and bit names suggest that they should correspond to 85% and 75% of
> the nominal battery voltage, the data sheet also says


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof