Re: [PATCH] PCI: qcom: Clear ASPM L0s CAP for MSM8996 SoC

Dmitry Baryshkov
2025-11-26T08:47:43Z

On Wed, Nov 26, 2025 at 01:47:18PM +0530, Manivannan Sadhasivam wrote:
> From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
>
> Though I couldn't confirm the ASPM L0s support with the Qcom hardware team,
> bug report from Dmitry suggests that L0s is broken on this legacy SoC.
> Hence, clear the L0s CAP for the Root Ports in this SoC.
>
> Since qcom_pcie_clear_aspm_l0s() is now used by more than one SoC config,
> call it from qcom_pcie_host_init() instead.
>
> Reported-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
> Closes: https://lore.kernel.org/linux-pci/4cp5pzmlkkht2ni7us6p3edidnk25l45xrp6w3fxguqcvhq2id@wjqqrdpkypkf
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
> ---
> drivers/pci/controller/dwc/pcie-qcom.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>

Tested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

Thanks!

--
With best wishes
Dmitry