[PATCH v2 0/7] Introduce SpacemiT K1 PCIe phy and host controller

[Johannes Erdfelt]

On Tue, Oct 28, 2025, Alex Elder <elder at riscstar.com> wrote:
> On 10/28/25 1:42 PM, Johannes Erdfelt wrote:
> > I have been testing this patchset recently as well, but on an Orange Pi
> > RV2 board instead (and an extra RV2 specific patch to enable power to
> > the M.2 slot).
> > 
> > I ran into the same symptoms you had ("QID 0 timeout" after about 60
> > seconds). However, I'm using an Intel 600p. I can confirm my NVME drive
> > seems to work fine with the "pcie_aspm=off" workaround as well.
> 
> I don't see this problem, and haven't tried to reproduce it yet.
> 
> Mani told me I needed to add these lines to ensure the "runtime
> PM hierarchy of PCIe chain" won't be "broken":
> 
> 	pm_runtime_set_active()
> 	pm_runtime_no_callbacks()
> 	devm_pm_runtime_enable()
> 
> Just out of curiosity, could you try with those lines added
> just before these assignments in k1_pcie_probe()?
> 
> 	k1->pci.dev = dev;
> 	k1->pci.ops = &k1_pcie_ops;
> 	dw_pcie_cap_set(&k1->pci, REQ_RES);
> 
> I doubt it will fix what you're seeing, but at the moment I'm
> working on something else.

Unfortunately there is no difference with the runtime PM hierarchy
additions.

JE