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PCI: qcom-ep: Expose link transition counts via debugfs
authorManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Wed, 14 Sep 2022 07:53:43 +0000 (13:23 +0530)
committerLorenzo Pieralisi <lpieralisi@kernel.org>
Wed, 5 Oct 2022 14:17:45 +0000 (16:17 +0200)
commit6dbba2b53c3bcbbee849d2fa8cf6acc973ab2e81
treea538d2910021de7d7e8c852b64678cd3f704dd80tree | snapshot
parent19619b43f0319c7a0564f6ff35aca5f62e7cb118commit | diff
PCI: qcom-ep: Expose link transition counts via debugfs

Qualcomm PCIe controllers have debug registers in the MMIO region
that count PCIe link transitions. Expose them over debugfs to
userspace to help debug the low power issues.

Link: https://lore.kernel.org/r/20220914075350.7992-6-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
drivers/pci/controller/dwc/pcie-qcom-ep.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git