On Thu, Jan 11, 2024 at 04:01:14AM +0200, Dmitry Baryshkov wrote:
> If cluster domain idle state is enabled on the RB1, the board becomes
> significantly less responsive. Under certain circumstances (if some of
> the devices are disabled in kernel config) the board can even lock up.
>
> It seems this is caused by the MPM not being pinged during CPU idle (in
> the same way the RPMh is pinged when cluster idle is entered).
>
What does "ping" mean here? Please be more specific.
- Mani
> Disable cluster domain idle for the RB1 board until MPM driver is fixed
> to cooperate with the CPU idle states.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> ---
> arch/arm64/boot/dts/qcom/qrb2210-rb1.dts | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
> index aa53b6af6d9c..9a0308ef8b0f 100644
> --- a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
> +++ b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
> @@ -177,6 +177,24 @@ vph_pwr: regulator-vph-pwr {
> };
> };
>
> +&CPU_PD0 {
> + /delete-property/ power-domains;
> +};
> +
> +&CPU_PD1 {
> + /delete-property/ power-domains;
> +};
> +
> +&CPU_PD2 {
> + /delete-property/ power-domains;
> +};
> +
> +&CPU_PD3 {
> + /delete-property/ power-domains;
> +};
> +
> +/delete-node/ &CLUSTER_PD;
> +
> &gpi_dma0 {
> status = "okay";
> };
>
> ---
> base-commit: 39676dfe52331dba909c617f213fdb21015c8d10
> change-id: 20240111-qrb2210-rb1-no-cluster-idle-7bf43b3a0452
>
> Best regards,
> --
> Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
>
>
--
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