On Wed 26 May 18:30 CDT 2021, Stephen Boyd wrote:
> Quoting Maulik Shah (2021-05-21 04:26:09)
> > Add device node for SoC sleep stats driver which provides various
> > low power mode stats.
> >
> > Also update the reg size of aoss_qmp device to 0x400.
> >
> > Cc: devicetree@xxxxxxxxxxxxxxx
> > Signed-off-by: Maulik Shah <mkshah@xxxxxxxxxxxxxx>
> > Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> > ---
> > arch/arm64/boot/dts/qcom/sc7180.dtsi | 7 ++++++-
> > 1 file changed, 6 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> > index 6228ba2..889d04d 100644
> > --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> > @@ -3215,7 +3215,7 @@
> >
> > aoss_qmp: power-controller@c300000 {
> > compatible = "qcom,sc7180-aoss-qmp";
> > - reg = <0 0x0c300000 0 0x100000>;
> > + reg = <0 0x0c300000 0 0x400>;
> > interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
> > mboxes = <&apss_shared 0>;
> >
> > @@ -3223,6 +3223,11 @@
> > #power-domain-cells = <1>;
> > };
> >
> > + rpmh-sleep-stats@c3f0000 {
> > + compatible = "qcom,rpmh-sleep-stats";
> > + reg = <0 0x0c3f0000 0 0x400>;
> > + };
> > +
>
> Does this need to be in DT? Can the sc7180-aoss-qmp driver use the
> aux-bus and stick the sleep stats device on there?
>
The AOSS memory space has N chunks of "message ram", one is used for the
QMP protocol (presumably the APSS specific one), a different one is used
for the sleep stats.
I presume we could have come up with a binding for the entire AOSS/AOP
and then describe (either implicit or explicitly) the QMP and
debug-stats under that.
But we'd also have to come up with the same container-device for the RPM
case.
Regards,
Bjorn
> > spmi_bus: spmi@c440000 {
> > compatible = "qcom,spmi-pmic-arb";
> > reg = <0 0x0c440000 0 0x1100>,
