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

[Krzysztof Kozlowski]

On 20/11/2025 13:18, ot_shunxi.zhang@xxxxxxxxxxxx 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