Re: [PATCH RFC 2/8] arm64: dts: qcom: add initial SM8650 dtsi

From: Konrad Dybcio
Date: Thu Nov 02 2023 - 09:32:49 EST




On 02/11/2023 11:54, Neil Armstrong wrote:
On 25/10/2023 11:01, Konrad Dybcio wrote:


On 10/25/23 09:47, Neil Armstrong wrote:
Add initial DTSI for the Qualcomm SM8650 platform,
only contains nodes which doesn't depend on interconnect.

Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---[...]

+            CLUSTER_SLEEP_1: cluster-sleep-1 {
+                compatible = "domain-idle-state";
+                arm,psci-suspend-param = <0x4100c344>;
I think this parameter signals the AOSS to attempt system
suspend and CLUSTER_SLEEP is a shallower, separate state.

OK, so downstream call this state "APSS_OFF" and the other state
calling 0x41000044 "CLUSTER_PWR_DN"Well, the name APSS_OFF suggests that all clusters go offline so
that would be a bit more complex than a simple "cut power to this
cluster"


On sm8[345]0 and qdu1000/sm4450 there's both states called CLUSTER_SLEEP_0 and CLUSTER_SLEEP_1,
and referenced into CLUSTER_PD cluster power domain.

I assume this is the same as SM8550, so what's the issue ?
It's just that we've been naming it in the most generic way possible
and that it could be more descriptive, especially given its
correlation with different things

Konrad