pci: layerscape: enable PCIe config ready
In EP mode, to enable accesses from the Root Complex, the
CONFIG_READY bit must be set, otherwise any config attempts
from the Root Complex will be returned with config retry
status (CRS).
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c
index b6806cf..47dd806 100644
--- a/drivers/pci/pcie_layerscape.c
+++ b/drivers/pci/pcie_layerscape.c
@@ -409,6 +409,11 @@
ls_pcie_ep_setup_bar(bar_base, 4, PCIE_BAR4_SIZE);
}
+static void ls_pcie_ep_enable_cfg(struct ls_pcie *pcie)
+{
+ ctrl_writel(pcie, PCIE_CONFIG_READY, PCIE_PF_CONFIG);
+}
+
static void ls_pcie_setup_ep(struct ls_pcie *pcie)
{
u32 sriov;
@@ -432,6 +437,8 @@
ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE);
ls_pcie_ep_setup_atu(pcie);
}
+
+ ls_pcie_ep_enable_cfg(pcie);
}
static int ls_pcie_probe(struct udevice *dev)