[PATCH v4 6/6] PCI: spacemit-k1: Add Spacemit K3 PCIe host controller support

[Inochi Amaoto]

On Thu, Jul 09, 2026 at 10:21:18AM +0300, Andy Shevchenko wrote:
> On Thu, Jul 09, 2026 at 12:00:26PM +0800, Inochi Amaoto wrote:
> > The PCIe controller on Spacemit K3 is almost a standard Synopsys
> > DesignWare PCIe IP with extra link and reset control. Unlike
> > the PCIe controller on K1, this controller supports external MSI
> > interrupt controller and can use multiple PHYs at the same time.
> > 
> > Add driver to support PCIe controller on Spacemit K3 PCIe.
> 
> ...
> 
> > +	/* K3: Set IGNORE_PERSTN and drive PERSTN_OE high (assert reset) */
> > +	regmap_set_bits(k1->pmu, k1->pmu_off + PCIE_CONTROL_LOGIC,
> > +			PCIE_IGNORE_PERSTN | PCIE_PERSTN_OE | PCIE_PERSTN_OUT);
> > +	usleep_range(1000, 2000);
> 
> fsleep(1 * USEC_PER_MSEC)
> 
> > +	regmap_clear_bits(k1->pmu, k1->pmu_off + PCIE_CONTROL_LOGIC, PCIE_PERSTN_OUT);
> > +
> > +	msleep(PCIE_T_PVPERL_MS);
> 
> If PCIE_T_PVPERL_MS is too small, msleep() maybe not a good choice,
> perhaps
> 
> fsleep(PCIE_T_PVPERL_MS * USEC_PER_MSEC)
> 
> ...
> 
> > +	val = u32_replace_bits(val, BIT(7),
> > +			       GEN3_EQ_CONTROL_OFF_PSET_REQ_VEC);
> 
> It's perfectly a single line.
> 
> ...
> 
> >  static const struct of_device_id k1_pcie_of_match_table[] = {
> >  	{ .compatible = "spacemit,k1-pcie", .data = &k1_pcie_device_data},
> > +	{ .compatible = "spacemit,k3-pcie", .data = &k3_pcie_device_data},
> 
> Missed space.
> 
> >  	{ }
> >  };
> 
> I don't see (and haven't checked) the context, do you have
> MODULE_DEVICE_TABLE() for this?
> 

IIRC there is already a patch for adding this, so I won't add
MODULE_DEVICE_TABLE there.

I will take other advice, thanks.

> -- 
> With Best Regards,
> Andy Shevchenko
> 
> 

Regards,
Inochi