On Wed 30 Mar 18:34 PDT 2022, Bjorn Andersson wrote:
> The Qualcomm SC8180X platform was piggy backing on the SM8250
> qcom_pcie_cfg, but the platform doesn't have the ddrss_sf_tbu clock, so
> it now fails to probe due to the missing clock.
>
> Give SC8180X its own qcom_pcie_cfg, without the ddrss_sf_tbu flag set.
>
> Fixes: 0614f98bbb9f ("PCI: qcom: Add ddrss_sf_tbu flag")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Ping. Would be nice to have this regression fix picked up for v5.18...
Thanks,
Bjorn
> ---
> drivers/pci/controller/dwc/pcie-qcom.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
> index 6ab90891801d..816028c0f6ed 100644
> --- a/drivers/pci/controller/dwc/pcie-qcom.c
> +++ b/drivers/pci/controller/dwc/pcie-qcom.c
> @@ -1550,6 +1550,11 @@ static const struct qcom_pcie_cfg sc7280_cfg = {
> .pipe_clk_need_muxing = true,
> };
>
> +static const struct qcom_pcie_cfg sc8180x_cfg = {
> + .ops = &ops_1_9_0,
> + .has_tbu_clk = true,
> +};
> +
> static const struct dw_pcie_ops dw_pcie_ops = {
> .link_up = qcom_pcie_link_up,
> .start_link = qcom_pcie_start_link,
> @@ -1656,7 +1661,7 @@ static const struct of_device_id qcom_pcie_match[] = {
> { .compatible = "qcom,pcie-qcs404", .data = &ipq4019_cfg },
> { .compatible = "qcom,pcie-sdm845", .data = &sdm845_cfg },
> { .compatible = "qcom,pcie-sm8250", .data = &sm8250_cfg },
> - { .compatible = "qcom,pcie-sc8180x", .data = &sm8250_cfg },
> + { .compatible = "qcom,pcie-sc8180x", .data = &sc8180x_cfg },
> { .compatible = "qcom,pcie-sm8450-pcie0", .data = &sm8450_pcie0_cfg },
> { .compatible = "qcom,pcie-sm8450-pcie1", .data = &sm8450_pcie1_cfg },
> { .compatible = "qcom,pcie-sc7280", .data = &sc7280_cfg },
> --
> 2.35.1
>
