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[PATCHv5,3/9] PCI: layerscape: add class code and multifunction fixups for ls1021a

Message ID 20170828105301.8511-4-Zhiqiang.Hou@nxp.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Z.Q. Hou Aug. 28, 2017, 10:52 a.m. UTC 
From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>

The current code depends on these 2 fixups implemented in bootloader,
this patch is to resolve the dependence.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Acked-by: Roy Zang <tie-fei.zang@freescale.com>
---
V5:
 - No change

 drivers/pci/dwc/pci-layerscape.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/drivers/pci/dwc/pci-layerscape.c b/drivers/pci/dwc/pci-layerscape.c
index c16940044ed6..3aa34214643c 100644
--- a/drivers/pci/dwc/pci-layerscape.c
+++ b/drivers/pci/dwc/pci-layerscape.c
@@ -134,6 +134,11 @@  static int ls1021_pcie_host_init(struct pcie_port *pp)
 
 	dw_pcie_setup_rc(pp);
 
+	iowrite32(1, pci->dbi_base + PCIE_DBI_RO_WR_EN);
+	ls_pcie_fix_class(pcie);
+	ls_pcie_clear_multifunction(pcie);
+	iowrite32(0, pci->dbi_base + PCIE_DBI_RO_WR_EN);
+
 	ls_pcie_drop_msg_tlp(pcie);
 
 	return 0;