[PATCH 3/3] imx: power-domain: Get rid of SMCCC dependency

Adam Ford aford173 at gmail.com
Mon Apr 4 16:15:10 CEST 2022


On Mon, Apr 4, 2022 at 8:01 AM Marek Vasut <marex at denx.de> wrote:
>
> On 4/4/22 14:51, Adam Ford wrote:
> > On Wed, Mar 30, 2022 at 10:04 PM Marek Vasut <marex at denx.de> wrote:
> >>
> >> This driver is the only SMCCC dependency in iMX8M U-Boot port. Rework
> >> the driver based on Linux GPCv2 driver to directly control the GPCv2
> >> block instead of using SMCCC calls. This way, U-Boot can operate the
> >> i.MX8M power domains without depending on anything else.
> >>
> >> This is losely based on Linux GPCv2 driver. The GPU, VPU, MIPI power
> >> domains are not supported to save space, since they are not useful in
> >> the bootloader. The only domains kept are ones for HSIO, PCIe, USB.
> >
> > I thought there were people who were using video in U-Boot, but maybe
> > I am wrong.
>
> There are no video drivers for MX8M in U-Boot, it's all USB and maybe
> sometimes in the future PCIe.

Oh good.

I'll try to test it on an imx8mq when I get some time.

adam


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