RE: [PATCH V4 2/8] PCI: imx6: Add skip_pwrctrl_off flag support

[Sherry Sun]

> Subject: Re: [PATCH V4 2/8] PCI: imx6: Add skip_pwrctrl_off flag support
> 
> [+cc Mediatek folks]
> 
> On Tue, Jun 30, 2026 at 06:31:33PM +0800, Sherry Sun (OSS) wrote:
> > From: Sherry Sun <sherry.sun@xxxxxxx>
> >
> > Use dw_pcie_rp::skip_pwrctrl_off to avoid powering off devices during
> > suspend to preserve wakeup capability of the devices and also not to
> > power on the devices in the init path.
> 
> Only pci-imx6.c, pcie-qcom.c, and pcie-mediatek-gen3.c use pci-pwrctrl.  pcie-
> qcom.c already has similar skip_pwrctrl_off checks, but pcie-mediatek-gen3.c
> does not.  Does it need them?

I think that's depends on if the controller have the usercases such as M.2 keyE
connector without auxiliary power and required to support PCIe L2 link state
and wake-up mechanisms.

Best Regards
Sherry