imx6sx pcie external reference clk

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imx6sx pcie external reference clk

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hyoungkikim
Contributor IV

hi all

in the imx6sx-sdb board, there is an external pcie reference clk ( not populated) . If I add this a part , how should I modify  source  in linux or u-boot?
In linux 5.15.52,  the imx6_pcie_probe  function reads ext_osc  from device tree, but that's all it doesn't seem to do anything.   IMX8M does  something

is is possible to use external pcie reference clk in imx6sx  

 

Thank you in advance.

 

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