[PATCH 00/11] i.MX8MM power domain support

[Adam Ford]

On Wed, Sep 30, 2020 at 10:50 AM Lucas Stach <l.stach at pengutronix.de> wrote:
>
> Hi all,
>
> this adds power domain support for the i.MX8MM to the existing GPCv2
> driver. It is not complete yet, as it is still missing the VPU and
> display power domains, as those require support for the BLK_CTL
> regions of the VPUMIX and DISPLAYMIX domains. A Linux driver for
> those regions on the i.MX8MP is currently under development and we
> plan to use this as a template for the i.MX8MM when the dust has
> settled. The changes in this series have been made with this in
> mind, so once the BLK_CTL driver exists it should be a matter of
> hooking things together via DT, with no further changes required on
> the GPCv2 driver side (famous last words).
>
> Special thanks to Marek Vasut who helped with testing and debugging
> of early versions of this code.
>
> Regards,
> Lucas
>
> Lucas Stach (11):
>   soc: imx: gpcv2: move to more ideomatic error handling in probe
>   soc: imx: gpcv2: move domain mapping to domain driver probe
>   soc: imx: gpcv2: split power up and power down sequence control
>   soc: imx: gpcv2: wait for ADB400 handshake
>   soc: imx: gpcv2: add runtime PM support for power-domains
>   soc: imx: gpcv2: allow domains without power-sequence control
>   soc: imx: gpcv2: add support for optional resets
>   dt-bindings: add defines for i.MX8MM power domains
>   soc: imx: gpcv2: add support for i.MX8MM power domains
>   arm64: dts: imx8mm: add GPC node and power domains
>   arm64: dts: imx8mm: put USB controllers into power-domains

I fully support trying to get this done.  I tried to push something
like this before, but I was turned down by someone at NXP [1].  I have
both a Mini and Nano board at my disposal, so if Nano support isn't
there yet, and this driver patch gets accepted, I'll gladly work to
help and/or test functionality.

[1] - https://lkml.org/lkml/2020/4/30/540

adam

>
>  .../bindings/power/fsl,imx-gpcv2.yaml         |   8 +
>  arch/arm64/boot/dts/freescale/imx8mm.dtsi     |  59 +++
>  drivers/soc/imx/gpcv2.c                       | 501 +++++++++++++++---
>  include/dt-bindings/power/imx8mm-power.h      |  22 +
>  4 files changed, 516 insertions(+), 74 deletions(-)
>  create mode 100644 include/dt-bindings/power/imx8mm-power.h
>
> --
> 2.20.1
>
>
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