From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Dennis Lambe Jr <dennis@sparkcharge.io>,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Rob Herring <robh+dt@kernel.org>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rtc@vger.kernel.org
Subject: Re: [PATCH v2 2/3] dt-bindings: m41t80: add xtal load capacitance
Date: Tue, 10 Jan 2023 14:02:03 +0100 [thread overview]
Message-ID: <b0189f64-59f1-6ba2-489c-383bd953cf2a@linaro.org> (raw)
In-Reply-To: <20230104052506.575619-3-dennis@sparkcharge.io>
On 04/01/2023 06:25, Dennis Lambe Jr wrote:
> The ST m41t82 and m41t83 support programmable load capacitance from 3.5
> pF to 17.4 pF. The hardware defaults to 12.5 pF.
>
> The accuracy of the xtal can be calibrated precisely by adjusting the
> load capacitance.
>
> Add default, minimum, and maximum for the standard rtc property
> quartz-load-femtofarads on compatible devices.
>
> Signed-off-by: Dennis Lambe Jr <dennis@sparkcharge.io>
> ---
>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Best regards,
Krzysztof
next prev parent reply other threads:[~2023-01-10 13:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-04 5:25 [PATCH v2 0/3] rtc: Set M41T82 & M41T83 xtal load capacitance from DT Dennis Lambe Jr
2023-01-04 5:25 ` [PATCH v2 1/3] rtc: m41t80: probe: use IS_ENABLED for CONFIG_OF Dennis Lambe Jr
2023-01-04 5:25 ` [PATCH v2 2/3] dt-bindings: m41t80: add xtal load capacitance Dennis Lambe Jr
2023-01-10 13:02 ` Krzysztof Kozlowski [this message]
2023-01-04 5:25 ` [PATCH v2 3/3] rtc: m41t80: set xtal load capacitance from DT Dennis Lambe Jr
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