diff options
| author | Richard Zhu <hongxing.zhu@nxp.com> | 2020-10-22 15:26:10 +0800 |
|---|---|---|
| committer | Richard Zhu <hongxing.zhu@nxp.com> | 2020-10-26 11:39:30 +0800 |
| commit | 801c87e9fd7f63a6c225c852e2ab0e635335f356 (patch) | |
| tree | d92b5a6f76d5b65747fe50eb0bdb40fe6715605f /drivers/pci/controller/dwc/pci-imx6.c | |
| parent | 06d81e69ddc3b37863fd343f8b6775f5402c5ecf (diff) | |
MLK-24910-2 PCI: imx: refine pcie driver
pci imx set the dbi_wr_en when re-configure the link gen
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Fugang Duan <fugang.duan@nxp.com>
Diffstat (limited to 'drivers/pci/controller/dwc/pci-imx6.c')
| -rw-r--r-- | drivers/pci/controller/dwc/pci-imx6.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index db979ecfe4ac..b1c2e78d14ae 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -1799,6 +1799,7 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) u32 tmp; int ret; + dw_pcie_dbi_ro_wr_en(pci); /* * Force Gen1 operation when starting the link. In case the link is * started in Gen2 mode, there is a possibility the devices on the @@ -1870,11 +1871,13 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) dev_info(dev, "Link: Gen2 disabled\n"); } + dw_pcie_dbi_ro_wr_dis(pci); tmp = dw_pcie_readl_dbi(pci, PCIE_RC_LCSR); dev_info(dev, "Link up, Gen%i\n", (tmp >> 16) & 0xf); return 0; err_reset_phy: + dw_pcie_dbi_ro_wr_dis(pci); dev_dbg(dev, "PHY DEBUG_R0=0x%08x DEBUG_R1=0x%08x\n", dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG0), dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG1)); |