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[v7,2/9] PCI: mediatek: Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI

Message ID 1539582287-9171-3-git-send-email-honghui.zhang@mediatek.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show
Series PCI: mediatek: fixup find_port, enable_msi and add PM, module support | expand

Commit Message

Honghui Zhang Oct. 15, 2018, 5:44 a.m. UTC 
From: Honghui Zhang <honghui.zhang@mediatek.com>

The commit 101c92dc80c8 ("PCI: mediatek: Set up vendor ID and class
type for MT7622") have set the class type for MT7622 as un-properly
value of PCI_CLASS_BRIDGE_HOST.

The PCIe controller of MT7622 is complexed with Root Port and PCI-to-PCI
bridge, the bridge has type 1 configuration space header and related bridge
windows. The HW default value of this bridge's class type is invalid. Fix
its class type as PCI_CLASS_BRIDGE_PCI since it is HW defines.

Making the bridge visiable to PCI framework by setting its class type
properly will get its bridge windows configurated during PCI device
enumerate.

Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com>
---
 drivers/pci/controller/pcie-mediatek.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
index 288b8e2..bcdac9b 100644
--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -432,7 +432,7 @@  static int mtk_pcie_startup_port_v2(struct mtk_pcie_port *port)
 		val = PCI_VENDOR_ID_MEDIATEK;
 		writew(val, port->base + PCIE_CONF_VEND_ID);
 
-		val = PCI_CLASS_BRIDGE_HOST;
+		val = PCI_CLASS_BRIDGE_PCI;
 		writew(val, port->base + PCIE_CONF_CLASS_ID);
 	}