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[6/8] arm64: dts: qcom: sdm845: Flush RSC sleep & wake votes

Message ID 20230531-topic-rsc-v1-6-b4a985f57b8b@linaro.org
State New
Headers
Series Flush RSC votes properly on more RPMh platforms |

Commit Message

Konrad Dybcio May 31, 2023, 1:22 p.m. UTC 
  The rpmh driver will cache sleep and wake votes until the cluster
power-domain is about to enter idle, to avoid unnecessary writes. So
associate the apps_rsc with the cluster pd, so that it can be notified
about this event.

Without this, only AMC votes are being commited.

Fixes: c83545d95376 ("arm64: dts: sdm845: Add rpmh-rsc node")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 arch/arm64/boot/dts/qcom/sdm845.dtsi | 1 +
 1 file changed, 1 insertion(+)

Comments

Doug Anderson May 31, 2023, 8:49 p.m. UTC | #1 
Hi,

On Wed, May 31, 2023 at 6:22 AM Konrad Dybcio <konrad.dybcio@linaro.org> wrote:
>
> The rpmh driver will cache sleep and wake votes until the cluster
> power-domain is about to enter idle, to avoid unnecessary writes. So
> associate the apps_rsc with the cluster pd, so that it can be notified
> about this event.
>
> Without this, only AMC votes are being commited.
>
> Fixes: c83545d95376 ("arm64: dts: sdm845: Add rpmh-rsc node")
> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845.dtsi | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index 950305aad44d..707550ef4990 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -5138,6 +5138,7 @@ apps_rsc: rsc@179c0000 {
>                                           <SLEEP_TCS   3>,
>                                           <WAKE_TCS    3>,
>                                           <CONTROL_TCS 1>;
> +                       power-domains = <&CLUSTER_PD>;

It would be good to confirm that this doesn't throw sdm845-cheza for a
loop. No sdm845 Chromebooks ever officially shipped, but some people
like Rob Clark still use the old boards in their CI farms. Adding him
here in case he wants to check. Worst case we could just delete the
property from the cheza device tree.

-Doug
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Patch

diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index 950305aad44d..707550ef4990 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -5138,6 +5138,7 @@  apps_rsc: rsc@179c0000 {
 					  <SLEEP_TCS   3>,
 					  <WAKE_TCS    3>,
 					  <CONTROL_TCS 1>;
+			power-domains = <&CLUSTER_PD>;
 
 			apps_bcm_voter: bcm-voter {
 				compatible = "qcom,bcm-voter";