Am Do., 10. März 2022 um 13:14 Uhr schrieb Christian Gmeiner
<christian.gmeiner@xxxxxxxxx>:
>
> Hi all
>
> > This enables the Controller [RP] to automatically respond with
> > Response/ResponseD messages if CDNS_PCIE_LM_TPM_CTRL_PTMRSEN
> > and PCI_PTM_CTRL_ENABLE bits are both set.
> >
> > Signed-off-by: Christian Gmeiner <christian.gmeiner@xxxxxxxxx>
> > ---
> > drivers/pci/controller/cadence/pcie-cadence-host.c | 10 ++++++++++
> > drivers/pci/controller/cadence/pcie-cadence.h | 4 ++++
> > 2 files changed, 14 insertions(+)
> >
> > diff --git a/drivers/pci/controller/cadence/pcie-cadence-host.c b/drivers/pci/controller/cadence/pcie-cadence-host.c
> > index fb96d37a135c..940c7dd701d6 100644
> > --- a/drivers/pci/controller/cadence/pcie-cadence-host.c
> > +++ b/drivers/pci/controller/cadence/pcie-cadence-host.c
> > @@ -123,6 +123,14 @@ static int cdns_pcie_retrain(struct cdns_pcie *pcie)
> > return ret;
> > }
> >
> > +static void cdns_pcie_host_enable_ptm_response(struct cdns_pcie *pcie)
> > +{
> > + u32 val;
> > +
> > + val = cdns_pcie_readl(pcie, CDNS_PCIE_LM_PTM_CTRL);
> > + cdns_pcie_writel(pcie, CDNS_PCIE_LM_PTM_CTRL, val | CDNS_PCIE_LM_TPM_CTRL_PTMRSEN);
> > +}
> > +
> > static int cdns_pcie_host_start_link(struct cdns_pcie_rc *rc)
> > {
> > struct cdns_pcie *pcie = &rc->pcie;
> > @@ -501,6 +509,8 @@ int cdns_pcie_host_setup(struct cdns_pcie_rc *rc)
> > if (rc->quirk_detect_quiet_flag)
> > cdns_pcie_detect_quiet_min_delay_set(&rc->pcie);
> >
> > + cdns_pcie_host_enable_ptm_response(pcie);
> > +
> > ret = cdns_pcie_start_link(pcie);
> > if (ret) {
> > dev_err(dev, "Failed to start link\n");
> > diff --git a/drivers/pci/controller/cadence/pcie-cadence.h b/drivers/pci/controller/cadence/pcie-cadence.h
> > index c8a27b6290ce..1ffa8fa77a8a 100644
> > --- a/drivers/pci/controller/cadence/pcie-cadence.h
> > +++ b/drivers/pci/controller/cadence/pcie-cadence.h
> > @@ -116,6 +116,10 @@
> > #define LM_RC_BAR_CFG_APERTURE(bar, aperture) \
> > (((aperture) - 2) << ((bar) * 8))
> >
> > +/* PTM Control Register */
> > +#define CDNS_PCIE_LM_PTM_CTRL (CDNS_PCIE_LM_BASE + 0x0da8)
> > +#define CDNS_PCIE_LM_TPM_CTRL_PTMRSEN BIT(17)
> > +
> > /*
> > * Endpoint Function Registers (PCI configuration space for endpoint functions)
> > */
> > --
> > 2.35.1
> >
>
> This patch should be ready to land - or is anything missing?
>
Gentle ping.
--
greets
--
Christian Gmeiner, MSc
https://christian-gmeiner.info/privacypolicy
