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| author |   Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2022-06-24 17:39:36 +0300 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2022-08-01 15:02:11 -0500 |
| commit | 13e9d3900c20247993db68856d9898161acb403a (patch) | |
| tree | 28591d09a3a669fdc6f4587e4a3515fee0c8fdd7 /drivers/pci/controller/dwc/pcie-designware-host.c | |
| parent | PCI: dwc: Use native DWC IP core version representation (diff) | |
| download | linux-dev-13e9d3900c20247993db68856d9898161acb403a.tar.xz linux-dev-13e9d3900c20247993db68856d9898161acb403a.zip | |
PCI: dwc: Read DWC IP core version from register
Since DWC PCIe v4.70a, the controller version and version type can be read
from the PORT_LOGIC.PCIE_VERSION_OFF and PORT_LOGIC.PCIE_VERSION_TYPE_OFF
registers respectively.
Read the version from those registers and warn if if's different from the
version we got from the device tree.
We can only read the version after platform-specific drivers have done any
DBI-related initialization, such as reference clock activation.
[bhelgaas: commit log]
Link: https://lore.kernel.org/r/20220624143947.8991-5-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware-host.c')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware-host.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 1314bb128128..479ab6cadbac 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -405,6 +405,8 @@ int dw_pcie_host_init(struct dw_pcie_rp *pp) } } + dw_pcie_version_detect(pci); + dw_pcie_iatu_detect(pci); dw_pcie_setup_rc(pp); |