diff options
| author | Xiaowei Bao <xiaowei.bao@nxp.com> | 2020-07-09 18:31:37 +0300 |
|---|---|---|
| committer | Priyanka Jain <priyanka.jain@nxp.com> | 2020-07-27 11:54:15 +0300 |
| commit | 15ce1fadf7f00a93021b8d013147b4bcd23099f2 (patch) | |
| tree | 53b66d384b14285ddf588fbb0cdc20a1474bf82b /drivers/pci | |
| parent | c5174a52c2ff719b945cea0f0119ad57c541f1a9 (diff) | |
| download | u-boot-15ce1fadf7f00a93021b8d013147b4bcd23099f2.tar.xz | |
pci_ep: layerscape: Add the workaround for errata A-009460
The VF_BARn_REG register's Prefetchable and Type bit fields
are overwritten by a write to VF's BAR Mask register.
workaround: Before writing to the VF_BARn_MASK_REG register,
write 0b to the PCIE_MISC_CONTROL_1_OFF register.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pcie_layerscape_ep.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/pcie_layerscape_ep.c b/drivers/pci/pcie_layerscape_ep.c index e609607c3a..3f22c5ef7a 100644 --- a/drivers/pci/pcie_layerscape_ep.c +++ b/drivers/pci/pcie_layerscape_ep.c @@ -164,6 +164,15 @@ static void ls_pcie_setup_ep(struct ls_pcie_ep *pcie_ep) if (PCI_EXT_CAP_ID(sriov) == PCI_EXT_CAP_ID_SRIOV) { pcie_ep->sriov_flag = 1; for (pf = 0; pf < PCIE_PF_NUM; pf++) { + /* + * The VF_BARn_REG register's Prefetchable and Type bit + * fields are overwritten by a write to VF's BAR Mask + * register. Before writing to the VF_BARn_MASK_REG + * register, write 0b to the PCIE_MISC_CONTROL_1_OFF + * register. + */ + writel(0, pcie->dbi + PCIE_MISC_CONTROL_1_OFF); + if (pcie_ep->cfg2_flag) { for (vf = 0; vf <= PCIE_VF_NUM; vf++) { ctrl_writel(pcie, |