From 13e9d3900c20247993db68856d9898161acb403a Mon Sep 17 00:00:00 2001 From: Serge Semin Date: Fri, 24 Jun 2022 17:39:36 +0300 Subject: 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 Signed-off-by: Bjorn Helgaas Reviewed-by: Rob Herring Reviewed-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-designware-host.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/pci/controller/dwc/pcie-designware-host.c') 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); -- cgit v1.2.3-59-g8ed1b