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Date: Mon, 31 May 2021 11:48:02 -0500
From: Bjorn Andersson <bjorn.andersson@...aro.org>
To: Konrad Dybcio <konrad.dybcio@...ainline.org>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, martin.botka@...ainline.org,
angelogioacchino.delregno@...ainline.org,
marijn.suijten@...ainline.org, jamipkettunen@...ainline.org,
Loic Poulain <loic.poulain@...aro.org>,
Andy Gross <agross@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] arch: arm64: dts: msm8996: Add CPU opps
On Thu 27 May 21:51 CDT 2021, Bjorn Andersson wrote:
> On Thu 27 May 14:44 CDT 2021, Konrad Dybcio wrote:
>
> > From: Loic Poulain <loic.poulain@...aro.org>
> >
> > Add the operating points capabilities of the kryo CPUs, that can be
> > used for frequency scaling. There are two differents operating point
> > tables, one for the big cluster and one for the LITTLE cluster.
> >
> > This frequency scaling support can then be used as a passive cooling
> > device (cpufreq cooling device).
> >
> > Only add nominal fmax for now, since there is no dynamic control of
> > VDD APC (s11..) which is statically set at its nominal value.
> >
> > Original patch link: https://patchwork.kernel.org/project/linux-arm-msm/patch/1595253740-29466-6-git-send-email-loic.poulain@linaro.org/
> >
> > Signed-off-by: Loic Poulain <loic.poulain@...aro.org>
> > [konrad: drop the thermals part, rebase and remove spaces within <>]
> > Signed-off-by: Konrad Dybcio <konrad.dybcio@...ainline.org>
>
> As reported to Konrad on IRC, booting this causes a lockup before the
> kernel reaches init, on one of my db820c boards. Booting with powersave
> governor makes this board boot fine and I'm able to switch to
> performance after that and at least according to cpufreq we're at full
> speed on all 4 cores. But I haven't done any proper stress of the
> system to narrow it down further...
>
> PS. This was tested with next-20210527, your 3 patches, defconfig and
> CONFIG_QCOM_CLK_APCC_MSM8996=y
>
Again as noted on IRC, I reflashed the boot and tz firmware on my db820c
and am now able to boot my board with these patches.
Regards,
Bjorn
> Regards,
> Bjorn
>
> > ---
> > arch/arm64/boot/dts/qcom/msm8996.dtsi | 234 ++++++++++++++++++++++++++
> > 1 file changed, 234 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
> > index 509d5bfec8ad..10e6fecc9e13 100644
> > --- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
> > @@ -8,6 +8,7 @@
> > #include <dt-bindings/clock/qcom,rpmcc.h>
> > #include <dt-bindings/power/qcom-rpmpd.h>
> > #include <dt-bindings/soc/qcom,apr.h>
> > +#include <dt-bindings/thermal/thermal.h>
> >
> > / {
> > interrupt-parent = <&intc>;
> > @@ -44,6 +45,9 @@ CPU0: cpu@0 {
> > enable-method = "psci";
> > cpu-idle-states = <&CPU_SLEEP_0>;
> > capacity-dmips-mhz = <1024>;
> > + clocks = <&kryocc 0>;
> > + operating-points-v2 = <&cluster0_opp>;
> > + #cooling-cells = <2>;
> > next-level-cache = <&L2_0>;
> > L2_0: l2-cache {
> > compatible = "cache";
> > @@ -58,6 +62,9 @@ CPU1: cpu@1 {
> > enable-method = "psci";
> > cpu-idle-states = <&CPU_SLEEP_0>;
> > capacity-dmips-mhz = <1024>;
> > + clocks = <&kryocc 0>;
> > + operating-points-v2 = <&cluster0_opp>;
> > + #cooling-cells = <2>;
> > next-level-cache = <&L2_0>;
> > };
> >
> > @@ -68,6 +75,9 @@ CPU2: cpu@100 {
> > enable-method = "psci";
> > cpu-idle-states = <&CPU_SLEEP_0>;
> > capacity-dmips-mhz = <1024>;
> > + clocks = <&kryocc 1>;
> > + operating-points-v2 = <&cluster1_opp>;
> > + #cooling-cells = <2>;
> > next-level-cache = <&L2_1>;
> > L2_1: l2-cache {
> > compatible = "cache";
> > @@ -82,6 +92,9 @@ CPU3: cpu@101 {
> > enable-method = "psci";
> > cpu-idle-states = <&CPU_SLEEP_0>;
> > capacity-dmips-mhz = <1024>;
> > + clocks = <&kryocc 1>;
> > + operating-points-v2 = <&cluster1_opp>;
> > + #cooling-cells = <2>;
> > next-level-cache = <&L2_1>;
> > };
> >
> > @@ -121,6 +134,227 @@ CPU_SLEEP_0: cpu-sleep-0 {
> > };
> > };
> >
> > + cluster0_opp: opp_table0 {
> > + compatible = "operating-points-v2-kryo-cpu";
> > + nvmem-cells = <&speedbin_efuse>;
> > + opp-shared;
> > +
> > + /* Nominal fmax for now */
> > + opp-307200000 {
> > + opp-hz = /bits/ 64 <307200000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-422400000 {
> > + opp-hz = /bits/ 64 <422400000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-480000000 {
> > + opp-hz = /bits/ 64 <480000000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-556800000 {
> > + opp-hz = /bits/ 64 <556800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-652800000 {
> > + opp-hz = /bits/ 64 <652800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-729600000 {
> > + opp-hz = /bits/ 64 <729600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-844800000 {
> > + opp-hz = /bits/ 64 <844800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-960000000 {
> > + opp-hz = /bits/ 64 <960000000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1036800000 {
> > + opp-hz = /bits/ 64 <1036800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1113600000 {
> > + opp-hz = /bits/ 64 <1113600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1190400000 {
> > + opp-hz = /bits/ 64 <1190400000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1228800000 {
> > + opp-hz = /bits/ 64 <1228800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1324800000 {
> > + opp-hz = /bits/ 64 <1324800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1401600000 {
> > + opp-hz = /bits/ 64 <1401600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1478400000 {
> > + opp-hz = /bits/ 64 <1478400000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1593600000 {
> > + opp-hz = /bits/ 64 <1593600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + };
> > +
> > + cluster1_opp: opp_table1 {
> > + compatible = "operating-points-v2-kryo-cpu";
> > + nvmem-cells = <&speedbin_efuse>;
> > + opp-shared;
> > +
> > + /* Nominal fmax for now */
> > + opp-307200000 {
> > + opp-hz = /bits/ 64 <307200000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-403200000 {
> > + opp-hz = /bits/ 64 <403200000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-480000000 {
> > + opp-hz = /bits/ 64 <480000000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-556800000 {
> > + opp-hz = /bits/ 64 <556800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-652800000 {
> > + opp-hz = /bits/ 64 <652800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-729600000 {
> > + opp-hz = /bits/ 64 <729600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-806400000 {
> > + opp-hz = /bits/ 64 <806400000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-883200000 {
> > + opp-hz = /bits/ 64 <883200000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-940800000 {
> > + opp-hz = /bits/ 64 <940800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1036800000 {
> > + opp-hz = /bits/ 64 <1036800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1113600000 {
> > + opp-hz = /bits/ 64 <1113600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1190400000 {
> > + opp-hz = /bits/ 64 <1190400000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1248000000 {
> > + opp-hz = /bits/ 64 <1248000000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1324800000 {
> > + opp-hz = /bits/ 64 <1324800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1401600000 {
> > + opp-hz = /bits/ 64 <1401600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1478400000 {
> > + opp-hz = /bits/ 64 <1478400000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1555200000 {
> > + opp-hz = /bits/ 64 <1555200000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1632000000 {
> > + opp-hz = /bits/ 64 <1632000000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1708800000 {
> > + opp-hz = /bits/ 64 <1708800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1785600000 {
> > + opp-hz = /bits/ 64 <1785600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1824000000 {
> > + opp-hz = /bits/ 64 <1824000000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1920000000 {
> > + opp-hz = /bits/ 64 <1920000000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-1996800000 {
> > + opp-hz = /bits/ 64 <1996800000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-2073600000 {
> > + opp-hz = /bits/ 64 <2073600000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + opp-2150400000 {
> > + opp-hz = /bits/ 64 <2150400000>;
> > + opp-supported-hw = <0x77>;
> > + clock-latency-ns = <200000>;
> > + };
> > + };
> > +
> > firmware {
> > scm {
> > compatible = "qcom,scm-msm8996";
> > --
> > 2.31.1
> >
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