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Add debugfs support for HPA-based Cadence PCIe controllers. A new file 'ltssm_status' is created under debugfs, allowing users to read the current LTSSM state as a string and raw value. Signed-off-by: Hans Zhang <18255117159@163.com> [mani: fixed the makefile and dropped MODULE_* macros] Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Tested-by: Aksh Garg <a-garg7@ti.com> Link: https://patch.msgid.link/20260701073513.1101559-3-18255117159@163.com
5 lines
208 B
Plaintext
5 lines
208 B
Plaintext
What: /sys/kernel/debug/cdns_pcie_<dev>/ltssm_status
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Date: July 2026
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Contact: Hans Zhang <18255117159@163.com>
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Description: (RO) Read will return the current PCIe LTSSM state in both
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string and raw value. |