Re: [PATCH] PCI: qcom: Power on pwrctrl devices for firmware-managed hosts

[Bartosz Golaszewski]

On Thu, Nov 05, 2026 at 08:07:18PM +0530, Manivannan Sadhasivam wrote:
> On Thu, Nov 05, 2026 at 06:15:21PM +0800, Zhangfei Gao wrote:
> > commit b921aa3f8dec ("PCI/pwrctrl: Switch to pwrctrl create, power
> > on/off, destroy APIs") switched PCI pwrctrl users to explicit create and
> > power control APIs, but only added the calls to the regular DesignWare
> > host initialization path.
> > 
> > Firmware-managed hosts bypass that path and probe the ECAM host bridge
> > directly. Endpoints already powered by firmware, such as NVMe devices,
> > remain discoverable. Endpoints that rely on Linux pwrctrl and pwrseq,
> > such as WCN7850, remain powered off and cannot be discovered.
> > 
> 
> NACK. For FW initialized platforms, FW should power on the Endpoints before
> booting Linux.
>

Ah, sorry for the earlier tag. I should have known this and pointed it
out.

Bart