On Thu, Nov 22, 2018 at 09:14:35AM +0000, Biju Das wrote: > Add DT node for the Advanced Power Management Unit (APMU), add the > second CPU core, and use "renesas,apmu" as "enable-method". > > Also add cpu1 phandle node to the PMU interrupt-affinity property.
Hi Biju, Could you comment on how well this has been tested with respect to CPU hotplug and suspend to RAM? > Signed-off-by: Biju Das <[email protected]> > --- > arch/arm/boot/dts/r8a7744.dtsi | 28 +++++++++++++++++++++++++++- > 1 file changed, 27 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/r8a7744.dtsi b/arch/arm/boot/dts/r8a7744.dtsi > index 046ed94..79e75e7 100644 > --- a/arch/arm/boot/dts/r8a7744.dtsi > +++ b/arch/arm/boot/dts/r8a7744.dtsi > @@ -49,6 +49,7 @@ > cpus { > #address-cells = <1>; > #size-cells = <0>; > + enable-method = "renesas,apmu"; > > cpu0: cpu@0 { > device_type = "cpu"; > @@ -69,6 +70,25 @@ > < 375000 1000000>; > }; > > + cpu1: cpu@1 { > + device_type = "cpu"; > + compatible = "arm,cortex-a15"; > + reg = <1>; > + clock-frequency = <1500000000>; > + clocks = <&cpg CPG_CORE R8A7744_CLK_Z>; > + clock-latency = <300000>; /* 300 us */ > + power-domains = <&sysc R8A7744_PD_CA15_CPU1>; > + next-level-cache = <&L2_CA15>; > + > + /* kHz - uV - OPPs unknown yet */ > + operating-points = <1500000 1000000>, > + <1312500 1000000>, > + <1125000 1000000>, > + < 937500 1000000>, > + < 750000 1000000>, > + < 375000 1000000>; > + }; > + > L2_CA15: cache-controller-0 { > compatible = "cache"; > cache-unified; > @@ -96,7 +116,7 @@ > compatible = "arm,cortex-a15-pmu"; > interrupts-extended = <&gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>, > <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>; > - interrupt-affinity = <&cpu0>; > + interrupt-affinity = <&cpu0>, <&cpu1>; > }; > > /* External SCIF clock */ > @@ -250,6 +270,12 @@ > #reset-cells = <1>; > }; > > + apmu@e6152000 { > + compatible = "renesas,r8a7744-apmu", "renesas,apmu"; > + reg = <0 0xe6152000 0 0x188>; > + cpus = <&cpu0 &cpu1>; > + }; > + > rst: reset-controller@e6160000 { > compatible = "renesas,r8a7744-rst"; > reg = <0 0xe6160000 0 0x100>; > -- > 2.7.4 >
