[PATCH 5/8] imx8m: enable usb power domain

Peng Fan
2020-10-12T09:20:34Z

> Subject: Re: [PATCH 5/8] imx8m: enable usb power domain
>
> On 10/12/20 8:23 AM, Peng Fan wrote:
> > Enable usb power domain, we are not using a power domain driver now.
> > Currently NXP use a ARM SIP based power domain driver, but this has
> > been rejected by Linux Kernel, so we are thinking SCMI, however kernel
> > stuff still not settle down, to make uboot feature work, we directly
> > use SIP call for U-Boot and MMIO for SPL.
>
> The i.MX8M power domain support was already submitted to mainline Linux
> [1], and it is much nicer to let the OS (or in this case, U-Boot) do that rather
> than hiding it into ATF.

oh.. that will conflict with NXP release. I not think NXP will use that in a short time.

We wanna use SCMI to hide the complex gpc stuff from Linux side and make
us easy support QNX/Windows/Linux.

Regards,
Peng.

>
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatch
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> 903&amp;data=02%7C01%7Cpeng.fan%40nxp.com%7C99fbfc009ea443756b
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