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SubjectQuery regarding the use of pcie-designware-plat.c file
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Hi,
I would like to know what is the use of pcie-designware-plat.c file.
This looks like a skeleton file and can't really work with any specific
hardware as such.
Some context for this mail thread is, if the config CONFIG_PCIE_DW_PLAT
is enabled in a system where a Synopsys DesignWare IP based PCIe
controller is present and its configuration is enabled (Ex:- Tegra194
system with CONFIG_PCIE_TEGRA194_HOST enabled), then, it can so happen
that the probe of pcie-designware-plat.c called first (because all DWC
based PCIe controller nodes have "snps,dw-pcie" compatibility string)
and can crash the system.
One solution to this issue is to remove the "snps,dw-pcie" from the
compatibility string (as was done through the commit f9f711efd441
("arm64: tegra: Fix Tegra194 PCIe compatible string") but it seems like
a localized fix for Tegra194 where the issue potentially is global, as
in, the crash can happen on any platform.
So, wondering if the config option CONFIG_PCIE_DW_PLAT can be removed
altogether for pcie-designware-plat.c?

Thanks,
Vidya Sagar

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