On Sat, Nov 23, 2024 at 12:39:58AM +0530, Krishna chaitanya chundru wrote: > If the vendor drivers can detect the Link up event using mechanisms > such as Link up IRQ, then waiting for Link up during probe is not > needed. if the drivers can be notified when the link comes up, > vendor driver can enumerate downstream devices instead of waiting > here, which optimizes the boot time. > > So skip waiting for link to be up if the driver supports 'use_linkup_irq'. > > Currently, only Qcom RC driver supports the 'use_linkup_irq' as it can > detect the Link Up event using its own 'global IRQ' interrupt. So set > 'use_linkup_irq' flag for QCOM drivers. > > And as part of the PCIe link up event, the ICC and OPP values are updated. > > Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx> > --- > Changes in v5: > - update the commit text as suggested by (mani). > Changes in v4: > - change the linkup_irq name to use_linkup_irq a suggested by (bjorn > andresson) > - update commit text as suggested by bjorn andresson. > - Link to v3: https://lore.kernel.org/r/linux-arm-msm/20241101-remove_wait-v3-0-7accf27f7202@xxxxxxxxxxx/T/ > Changes in v3: > - seperate dwc changes and qcom changes as suggested (mani) > - update commit & comments as suggested (mani & bjorn) > - Link to v2: https://lore.kernel.org/linux-pci/20240920-remove_wait-v2-0-7c0fcb3b581d@xxxxxxxxxxx/T/ > Changes in v2: > - Updated the bypass_link_up_wait name to linkup_irq & added comment as > suggested (mani). > - seperated the icc and opp update patch (mani). > - Link to v1: https://lore.kernel.org/r/20240917-remove_wait-v1-1-456d2551bc50@xxxxxxxxxxx > > --- > Krishna chaitanya chundru (3): > PCI: dwc: Skip waiting for link up if vendor drivers can detect Link up event > PCI: qcom: Set use_linkup_irq if global IRQ handler is present > PCI: qcom: Update ICC and OPP values during link up event > > drivers/pci/controller/dwc/pcie-designware-host.c | 10 ++++++++-- > drivers/pci/controller/dwc/pcie-designware.h | 1 + > drivers/pci/controller/dwc/pcie-qcom.c | 7 ++++++- > 3 files changed, 15 insertions(+), 3 deletions(-) > --- > base-commit: cfba9f07a1d6aeca38f47f1f472cfb0ba133d341 > change-id: 20241122-remove_wait2-d581b40380ea > > Best regards, > -- > Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx> > For the series: Reviewed-by: Niklas Cassel <cassel@xxxxxxxxxx>
