diff options
| author | Rob Herring <[email protected]> | 2020-08-21 03:54:14 +0000 |
|---|---|---|
| committer | Lorenzo Pieralisi <[email protected]> | 2020-09-10 15:50:54 +0000 |
| commit | 39bc5006501cc31987f4fc249c5ce07286b84768 (patch) | |
| tree | aa5220e3c8c090117420dfe614fdc5ec421cd0b9 /drivers/pci/controller/dwc/pci-keystone.c | |
| parent | PCI: dwc: Make ATU accessors private (diff) | |
| download | kernel-39bc5006501cc31987f4fc249c5ce07286b84768.tar.gz kernel-39bc5006501cc31987f4fc249c5ce07286b84768.zip | |
PCI: dwc: Centralize link gen setting
keystone would force gen2 if no DT property. Now it relies on the
PCI_EXP_LNKCAP value.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Rob Herring <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Cc: Kishon Vijay Abraham I <[email protected]>
Cc: Lorenzo Pieralisi <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: Richard Zhu <[email protected]>
Cc: Lucas Stach <[email protected]>
Cc: Shawn Guo <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Pengutronix Kernel Team <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: NXP Linux Team <[email protected]>
Cc: Murali Karicheri <[email protected]>
Cc: Jingoo Han <[email protected]>
Cc: Gustavo Pimentel <[email protected]>
Cc: Stanimir Varbanov <[email protected]>
Cc: Andy Gross <[email protected]>
Cc: Bjorn Andersson <[email protected]>
Cc: Pratyush Anand <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Jonathan Hunter <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Diffstat (limited to 'drivers/pci/controller/dwc/pci-keystone.c')
| -rw-r--r-- | drivers/pci/controller/dwc/pci-keystone.c | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index 5fe36da0b7c6..b554812dace7 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -1107,32 +1107,6 @@ static int ks_pcie_am654_set_mode(struct device *dev, return 0; } -static void ks_pcie_set_link_speed(struct dw_pcie *pci, int link_speed) -{ - u32 val; - u32 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); - - dw_pcie_dbi_ro_wr_en(pci); - - val = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCAP); - if ((val & PCI_EXP_LNKCAP_SLS) != link_speed) { - val &= ~((u32)PCI_EXP_LNKCAP_SLS); - val |= link_speed; - dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCAP, - val); - } - - val = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCTL2); - if ((val & PCI_EXP_LNKCAP_SLS) != link_speed) { - val &= ~((u32)PCI_EXP_LNKCAP_SLS); - val |= link_speed; - dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCTL2, - val); - } - - dw_pcie_dbi_ro_wr_dis(pci); -} - static const struct ks_pcie_of_data ks_pcie_rc_of_data = { .host_ops = &ks_pcie_host_ops, .version = 0x365A, @@ -1185,7 +1159,6 @@ static int __init ks_pcie_probe(struct platform_device *pdev) unsigned int version; void __iomem *base; struct phy **phy; - int link_speed; u32 num_lanes; char name[10]; int ret; @@ -1320,12 +1293,6 @@ static int __init ks_pcie_probe(struct platform_device *pdev) goto err_get_sync; } - link_speed = of_pci_get_max_link_speed(np); - if (link_speed < 0) - link_speed = 2; - - ks_pcie_set_link_speed(pci, link_speed); - switch (mode) { case DW_PCIE_RC_TYPE: if (!IS_ENABLED(CONFIG_PCI_KEYSTONE_HOST)) { |