Re: [PATCH v6 2/3] rtc: sophgo: add rtc support for Sophgo CV1800 SoC

[Krzysztof Kozlowski]

On 15/01/2024 17:05, Jingbao Qiu wrote:
> Implement the RTC driver for CV1800, which able to provide time alarm
> and calibrate functionality.
> 
> Signed-off-by: Jingbao Qiu <qiujingbao.dlmu@xxxxxxxxx>
> ---

> +
> +static int cv1800_rtc_probe(struct platform_device *pdev)
> +{
> +	struct cv1800_rtc_priv *rtc;
> +	uint32_t ctrl_val;
> +	int ret;
> +
> +	rtc = devm_kzalloc(&pdev->dev, sizeof(struct cv1800_rtc_priv),
> +			   GFP_KERNEL);
> +	if (!rtc)
> +		return -ENOMEM;
> +
> +	rtc->dev = &pdev->dev;
> +
> +	rtc->rtc_map = syscon_node_to_regmap(rtc->dev->of_node->parent);
> +	if (IS_ERR(rtc->rtc_map))
> +		return PTR_ERR(rtc->rtc_map);

Why do you take the parent? Your bindings say this device is the syscon,
not parent. Your DTS shows there is no parent syscon! This wasn't tested.

Best regards,
Krzysztof