linux-kernel - Re: [PATCH v4 07/25] scsi: ufs: mediatek: Rework 0.9V regulator

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Message-ID: <8206d9e715f7ef987b5369d0bda68cce13528112.camel@mediatek.com>
Date: Tue, 23 Dec 2025 09:35:39 +0000
From: Peter Wang (王信友) <peter.wang@...iatek.com>
To: "chu.stanley@...il.com" <chu.stanley@...il.com>, "robh@...nel.org"
	<robh@...nel.org>, Chunfeng Yun (云春峰)
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	Chaotian Jing (井朝天)
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CC: "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
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	<linux-mediatek@...ts.infradead.org>, Louis-Alexis Eyraud
	<louisalexis.eyraud@...labora.com>, "kernel@...labora.com"
	<kernel@...labora.com>
Subject: Re: [PATCH v4 07/25] scsi: ufs: mediatek: Rework 0.9V regulator

On Thu, 2025-12-18 at 13:54 +0100, Nicolas Frattaroli wrote:
> 
> +static int ufs_mtk_get_supplies(struct ufs_mtk_host *host)
> +{
> +       struct device *dev = host->hba->dev;
> +       const struct ufs_mtk_soc_data *data =
> of_device_get_match_data(dev);
> +
> +       if (!data || !data->has_avdd09)
> +               return 0;
> 


Hi Nicolas,

It seems that has_avdd09 is not necessary, because if the 
platform does not support avdd09, it will return an error
(-ENODEV) and bypass the avdd09 flow, right?

Thanks
Peter