Re: [PATCH v2 3/4] phy: fsl-imx8mq-usb: support alternate reference clock

Xu Yang
2025-10-14T10:27:06Z

On Mon, Oct 13, 2025 at 07:58:12AM +0200, Alexander Stein wrote:
> Am Freitag, 10. Oktober 2025, 13:01:12 CEST schrieb Xu Yang:
> > This phy supports both 24MHz and 100MHz clock inputs. By default it's
> > using XTAL 24MHz and the 100MHz clock is a alternate reference clock.
> > Add supports to use alternate reference clock in case 24MHz clock
> > can't work well.
>
> This driver supports imx8mx and imx8mp as well. Do these SoC also support
> the alternative clock?

imx8mp support the alternative clock too. Note that for imx8mp,
GPR_REG0.USB_PHY_REF_CLK_SEL needs also to be set if alternative clock is
necessary. However, it's not implemented for now.

Thanks,
Xu Yang

>
> Best regards
> Alexander
>