On Sat, Jun 08, 2024 at 01:45:29PM +0200, Johan Hovold wrote:
> Disconnecting an external display triggers a hypervisor reset on the
> Lenovo ThinkPad X13s since 6.10-rc1 which enabled UCSI. Disable it again
> until the regression has been fixed properly.
>
> Fixes: 3f91a0bf4a0b ("soc: qcom: pmic_glink: reenable UCSI on sc8280xp")
> Cc: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> ---
> drivers/soc/qcom/pmic_glink.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
>
> Dmitry reported off-list that his X13s was crashing when he disconnected
> an external display and I tracked it down to the enablement of UCSI in
> 6.10-rc1.
>
> I have not had time to debug this further, but I'm flagging this as a
> regression and sending an effective so that we have a fall back in case
> this is not fixed in timely manner.
>
> Note that this likely affects other Qualcomm SoCs as well.
>
> Johan
>
>
> #regzbot introduced: 3f91a0bf4a0b
>
>
>
> diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c
> index 40fb09d69014..65279243072c 100644
> --- a/drivers/soc/qcom/pmic_glink.c
> +++ b/drivers/soc/qcom/pmic_glink.c
> @@ -348,11 +348,15 @@ static void pmic_glink_remove(struct platform_device *pdev)
> mutex_unlock(&__pmic_glink_lock);
> }
>
> +static const unsigned long pmic_glink_sc8280xp_client_mask = BIT(PMIC_GLINK_CLIENT_BATT) |
> + BIT(PMIC_GLINK_CLIENT_ALTMODE);
> +
> static const unsigned long pmic_glink_sm8450_client_mask = BIT(PMIC_GLINK_CLIENT_BATT) |
> BIT(PMIC_GLINK_CLIENT_ALTMODE) |
> BIT(PMIC_GLINK_CLIENT_UCSI);
>
> static const struct of_device_id pmic_glink_of_match[] = {
> + { .compatible = "qcom,sc8280xp-pmic-glink", .data = &pmic_glink_sc8280xp_client_mask },
> { .compatible = "qcom,pmic-glink", .data = &pmic_glink_sm8450_client_mask },
> {}
> };
> --
> 2.44.1
--
heikki
