Re: [PATCH v4 05/25] phy: mediatek: ufs: Add support for resets

Vinod Koul
2025-12-23T17:40:01Z

On 18-12-25, 13:54, Nicolas Frattaroli wrote:
> The MediaTek UFS PHY supports PHY resets. Until now, they've been
> implemented in the UFS host driver. Since they were never documented in
> the UFS HCI node's DT bindings, and no mainline DT uses it, it's fine if
> it's moved to the correct location, which is the PHY driver.
>
> Implement the MPHY reset logic in this driver and expose it through the
> phy subsystem's reset op. The reset itself is optional, as judging by
> other mainline devices that use this hardware, it's not required for the
> device to function.
>
> If no reset is present, the reset op returns -EOPNOTSUPP, which means
> that the ufshci driver can detect it's present and not double sleep in
> its own reset function, where it will call the phy reset.

Acked-by: Vinod Koul <vkoul@kernel.org>

--
~Vinod