IMX8QXP pcie初始化失败

[baiseyuzhou]

您好：

我用的是IMX8qxp，我们用的是pci的内部时钟，没有外接高精度的信号发生器。

l内核启动打印：（Linux version 4.14.78）

[ 0.948995] OF: PCI: host bridge /pcie@0x5f010000 ranges:
[ 0.949005] OF: PCI: No bus range found for /pcie@0x5f010000, using [bus 00-ff]
[ 0.949018] OF: PCI: IO 0x7ff80000..0x7ff8ffff -> 0x00000000
[ 0.949033] OF: PCI: MEM 0x70000000..0x7fefffff -> 0x70000000
[ 0.951582] imx6q-pcie 5f010000.pcie: ERROR PM_REQ_CORE_RST is still set.
[ 0.972396] imx6q-pcie 5f010000.pcie: pcie phy pll can't be locked.
[ 1.012421] imx6q-pcie 5f010000.pcie: failed to initialize host
[ 1.012426] imx6q-pcie 5f010000.pcie: unable to add pcie port.

我的原理图如下：

[baiseyuzhou]

最近很多人私聊我，问我这个问题怎么解决的，统一回复：

pcie使用内部时钟，需要打开内部时钟的初始化：

修改的文件如下：scfw_export_mx8/platform/board/mx8qx_mek/board.c

[liuhongbo1]

你好，我也是用的内部时钟，现在出现了和你一样的错误，请问你现在解决了吗？

[ 0.780763] OF: PCI: host bridge /pcie@0x5f010000 ranges:
[ 0.780770] OF: PCI: No bus range found for /pcie@0x5f010000, using [bus 00-ff]
[ 0.780779] OF: PCI: IO 0x7ff80000..0x7ff8ffff -> 0x00000000
[ 0.780786] OF: PCI: MEM 0x70000000..0x7fefffff -> 0x70000000
[ 0.782769] imx6q-pcie 5f010000.pcie: ERROR PM_REQ_CORE_RST is still set.
[ 0.810009] imx6q-pcie 5f010000.pcie: pcie phy pll can't be locked.
[ 0.850023] imx6q-pcie 5f010000.pcie: failed to initialize host
[ 0.855603] imx6q-pcie 5f010000.pcie: unable to add pcie port.

[contact8]

Hello,

I am also having the same issue when using the internal clock.

Did you found a solution?

[CarlosCasillas]

Hi Yang,

The i.MX8QXP is still on preproduction, so, no additional information/support could be provided yet. In case of having doubts, please refer with your Sales/FAE.

Hope this will be useful for you.
Best regards!
/Carlos
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