linux-kernel - Re: [PATCH v2 4/5] rtc: mt6397: Add BBPU alarm status reset and shutdown handling

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Message-ID: <44783f62-c8da-4c5c-a927-f9ce80df8e37@kernel.org>
Date: Thu, 20 Nov 2025 14:40:15 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: ot_shunxi.zhang@...iatek.com, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Eddie Huang <eddie.huang@...iatek.com>, Sean Wang <sean.wang@...iatek.com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>, Lee Jones
 <lee@...nel.org>, Vince-WL.Liu@...iatek.com, sirius.wang@...iatek.com,
 Jh.Hsu@...iatek.com
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2 4/5] rtc: mt6397: Add BBPU alarm status reset and
 shutdown handling

On 20/11/2025 13:18, ot_shunxi.zhang@...iatek.com wrote:
>  
>  	rtc = devm_kzalloc(&pdev->dev, sizeof(struct mt6397_rtc), GFP_KERNEL);
> @@ -275,6 +294,8 @@ static int mtk_rtc_probe(struct platform_device *pdev)
>  	if (IS_ERR(rtc->rtc_dev))
>  		return PTR_ERR(rtc->rtc_dev);
>  
> +	rtc->alarm_sta_supported = of_property_read_bool(np, "mediatek,alarm-sta-supported");

You cannot add undocumented ABI. Read carefully Linux documentation.

Best regards,
Krzysztof