PCI: dwc: Add L1 Substates context to ltssm_status of debugfs

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[ Upstream commit 679ec639f2 ]

DWC core couldn't distinguish LTSSM state among L1.0, L1.1 and L1.2. But
the vendor glue driver may implement additional logic to convey this
information. So add two pseudo definitions for vendor glue drivers to
translate their internal L1 Substates for debugfs to show.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/1765503205-22184-1-git-send-email-shawn.lin@rock-chips.com
Stable-dep-of: 180c3cfe36 ("Revert "PCI: dw-rockchip: Enumerate endpoints based on dll_link_up IRQ"")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Shawn Lin 2025-12-12 09:33:24 +08:00 • committed by Sasha Levin

parent 80d3a201d7

commit aad472c928

2 changed files with 6 additions and 0 deletions

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drivers/pci/controller/dwc/pcie-designware-debugfs.c

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4

drivers/pci/controller/dwc/pcie-designware.h

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