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From:   <honghui.zhang@mediatek.com>
To:     <lorenzo.pieralisi@arm.com>, <bhelgaas@google.com>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>, <linux-pci@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <ryder.lee@mediatek.com>
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        <matthias.bgg@gmail.com>, <devicetree@vger.kernel.org>,
        <yingjoe.chen@mediatek.com>, <eddie.huang@mediatek.com>,
        <honghui.zhang@mediatek.com>, <youlin.pei@mediatek.com>,
        <yt.shen@mediatek.com>, <sean.wang@mediatek.com>
Subject: [PATCH v5 2/9] PCI: mediatek: Fixup class ID for MT7622 as PCI_CLASS_BRIDGE_PCI
Date:   Fri, 28 Sep 2018 18:04:33 +0800
Message-ID: <1538129080-8206-3-git-send-email-honghui.zhang@mediatek.com>
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From: Honghui Zhang <honghui.zhang@mediatek.com>

The PCIe controller of MT7622 has TYPE 1 configuration space type, but
the HW default class type values is invalid.

The commit 101c92dc80c8 ("PCI: mediatek: Set up vendor ID and class
type for MT7622") have set the class ID for MT7622 as
PCI_CLASS_BRIDGE_HOST, but it's not workable for MT7622:

In __pci_bus_assign_resources, the framework only setup bridge's
resource window only if class type is PCI_CLASS_BRIDGE_PCI. Or it
will leave the subordinary PCIe device's MMIO window un-touched.

Fixup the class type to PCI_CLASS_BRIDGE_PCI as most of the controller
driver do.

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

diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
index 264e03f..3ab80d6 100644
--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -436,7 +436,7 @@ 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);
 	}
 
-- 
2.6.4