diff mbox series

[3/3] arm64: dts: qcom: ipq5018: enable the CPUFreq support

Message ID 20230829095423.760641-4-quic_gokulsri@quicinc.com (mailing list archive)
State Superseded
Headers show
Series Add APSS clock driver support for IPQ5018 | expand

Commit Message

Gokul Sriram P Aug. 29, 2023, 9:54 a.m. UTC
Add the APCS, A53 PLL, cpu-opp-table nodes to set
the CPU frequency at optimal range.

Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Signed-off-by: Gokul Sriram Palanisamy <quic_gokulsri@quicinc.com>
---
 arch/arm64/boot/dts/qcom/ipq5018.dtsi | 34 +++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

Comments

Krzysztof Kozlowski Aug. 29, 2023, 10:12 a.m. UTC | #1
On 29/08/2023 11:54, Gokul Sriram Palanisamy wrote:
> Add the APCS, A53 PLL, cpu-opp-table nodes to set
> the CPU frequency at optimal range.
> 
> Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
> Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
> Signed-off-by: Gokul Sriram Palanisamy <quic_gokulsri@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/ipq5018.dtsi | 34 +++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> index 9f13d2dcdfd5..05843517312c 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> @@ -8,6 +8,7 @@
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>  #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
>  #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
> +#include <dt-bindings/clock/qcom,apss-ipq.h>

c is before r.

>  
>  / {
>  	interrupt-parent = <&intc>;
> @@ -36,6 +37,8 @@ CPU0: cpu@0 {
>  			reg = <0x0>;
>  			enable-method = "psci";
>  			next-level-cache = <&L2_0>;
> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> +			operating-points-v2 = <&cpu_opp_table>;
>  		};
>  
>  		CPU1: cpu@1 {
> @@ -44,6 +47,8 @@ CPU1: cpu@1 {
>  			reg = <0x1>;
>  			enable-method = "psci";
>  			next-level-cache = <&L2_0>;
> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> +			operating-points-v2 = <&cpu_opp_table>;
>  		};
>  
>  		L2_0: l2-cache {
> @@ -54,6 +59,17 @@ L2_0: l2-cache {
>  		};
>  	};
>  
> +	cpu_opp_table: opp-table-cpu {
> +		compatible = "operating-points-v2";
> +		opp-shared;
> +
> +		opp-1008000000 {
> +			opp-hz = /bits/ 64 <1008000000>;
> +			opp-microvolt = <1100000>;
> +			clock-latency-ns = <200000>;

And the rest of OPPs?

> +		};
> +	};
> +
>  	firmware {
>  		scm {
>  			compatible = "qcom,scm-ipq5018", "qcom,scm";
> @@ -181,6 +197,24 @@ v2m1: v2m@1000 {
>  			};
>  		};
>  
> +		a53pll: clock@b116000 {
> +			compatible = "qcom,ipq5018-a53pll";
> +			reg = <0x0b116000 0x40>;
> +			#clock-cells = <0>;
> +			clocks = <&xo_board_clk>;
> +			clock-names = "xo";
> +		};
> +
> +		apcs_glb: mailbox@b111000 {

0xb111000 looks lower than 0x116000.

> +			compatible = "qcom,ipq5018-apcs-apps-global",
> +				     "qcom,ipq6018-apcs-apps-global";
> +			reg = <0x0b111000 0x1000>;

Best regards,
Krzysztof
Robert Marko Aug. 29, 2023, 10:56 a.m. UTC | #2
On 29. 08. 2023. 12:12, Krzysztof Kozlowski wrote:
> On 29/08/2023 11:54, Gokul Sriram Palanisamy wrote:
>> Add the APCS, A53 PLL, cpu-opp-table nodes to set
>> the CPU frequency at optimal range.
>>
>> Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
>> Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
>> Signed-off-by: Gokul Sriram Palanisamy <quic_gokulsri@quicinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/ipq5018.dtsi | 34 +++++++++++++++++++++++++++
>>   1 file changed, 34 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
>> index 9f13d2dcdfd5..05843517312c 100644
>> --- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
>> @@ -8,6 +8,7 @@
>>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>>   #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
>>   #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
>> +#include <dt-bindings/clock/qcom,apss-ipq.h>
> c is before r.
>
>>   
>>   / {
>>   	interrupt-parent = <&intc>;
>> @@ -36,6 +37,8 @@ CPU0: cpu@0 {
>>   			reg = <0x0>;
>>   			enable-method = "psci";
>>   			next-level-cache = <&L2_0>;
>> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
>> +			operating-points-v2 = <&cpu_opp_table>;
>>   		};
>>   
>>   		CPU1: cpu@1 {
>> @@ -44,6 +47,8 @@ CPU1: cpu@1 {
>>   			reg = <0x1>;
>>   			enable-method = "psci";
>>   			next-level-cache = <&L2_0>;
>> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
>> +			operating-points-v2 = <&cpu_opp_table>;
>>   		};
>>   
>>   		L2_0: l2-cache {
>> @@ -54,6 +59,17 @@ L2_0: l2-cache {
>>   		};
>>   	};
>>   
>> +	cpu_opp_table: opp-table-cpu {
>> +		compatible = "operating-points-v2";
>> +		opp-shared;
>> +
>> +		opp-1008000000 {
>> +			opp-hz = /bits/ 64 <1008000000>;
>> +			opp-microvolt = <1100000>;
>> +			clock-latency-ns = <200000>;
> And the rest of OPPs?
Hi Krzysztof,
IPQ5018 only supports running at 1.1GHz, but its running at 800MHz
by default from the bootloader so there is only one OPP.

I am glad to see more SoC-s gaining CPUFreq support.

Regards,
Robert
>
>> +		};
>> +	};
>> +
>>   	firmware {
>>   		scm {
>>   			compatible = "qcom,scm-ipq5018", "qcom,scm";
>> @@ -181,6 +197,24 @@ v2m1: v2m@1000 {
>>   			};
>>   		};
>>   
>> +		a53pll: clock@b116000 {
>> +			compatible = "qcom,ipq5018-a53pll";
>> +			reg = <0x0b116000 0x40>;
>> +			#clock-cells = <0>;
>> +			clocks = <&xo_board_clk>;
>> +			clock-names = "xo";
>> +		};
>> +
>> +		apcs_glb: mailbox@b111000 {
> 0xb111000 looks lower than 0x116000.
>
>> +			compatible = "qcom,ipq5018-apcs-apps-global",
>> +				     "qcom,ipq6018-apcs-apps-global";
>> +			reg = <0x0b111000 0x1000>;
> Best regards,
> Krzysztof
>
>
>
Dmitry Baryshkov Aug. 29, 2023, 11 a.m. UTC | #3
On Tue, 29 Aug 2023 at 13:59, Robert Marko <robimarko@gmail.com> wrote:
>
>
> On 29. 08. 2023. 12:12, Krzysztof Kozlowski wrote:
> > On 29/08/2023 11:54, Gokul Sriram Palanisamy wrote:
> >> Add the APCS, A53 PLL, cpu-opp-table nodes to set
> >> the CPU frequency at optimal range.
> >>
> >> Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
> >> Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
> >> Signed-off-by: Gokul Sriram Palanisamy <quic_gokulsri@quicinc.com>
> >> ---
> >>   arch/arm64/boot/dts/qcom/ipq5018.dtsi | 34 +++++++++++++++++++++++++++
> >>   1 file changed, 34 insertions(+)
> >>
> >> diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> >> index 9f13d2dcdfd5..05843517312c 100644
> >> --- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> >> +++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> >> @@ -8,6 +8,7 @@
> >>   #include <dt-bindings/interrupt-controller/arm-gic.h>
> >>   #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
> >>   #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
> >> +#include <dt-bindings/clock/qcom,apss-ipq.h>
> > c is before r.
> >
> >>
> >>   / {
> >>      interrupt-parent = <&intc>;
> >> @@ -36,6 +37,8 @@ CPU0: cpu@0 {
> >>                      reg = <0x0>;
> >>                      enable-method = "psci";
> >>                      next-level-cache = <&L2_0>;
> >> +                    clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> >> +                    operating-points-v2 = <&cpu_opp_table>;
> >>              };
> >>
> >>              CPU1: cpu@1 {
> >> @@ -44,6 +47,8 @@ CPU1: cpu@1 {
> >>                      reg = <0x1>;
> >>                      enable-method = "psci";
> >>                      next-level-cache = <&L2_0>;
> >> +                    clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> >> +                    operating-points-v2 = <&cpu_opp_table>;
> >>              };
> >>
> >>              L2_0: l2-cache {
> >> @@ -54,6 +59,17 @@ L2_0: l2-cache {
> >>              };
> >>      };
> >>
> >> +    cpu_opp_table: opp-table-cpu {
> >> +            compatible = "operating-points-v2";
> >> +            opp-shared;
> >> +
> >> +            opp-1008000000 {
> >> +                    opp-hz = /bits/ 64 <1008000000>;
> >> +                    opp-microvolt = <1100000>;
> >> +                    clock-latency-ns = <200000>;
> > And the rest of OPPs?
> Hi Krzysztof,
> IPQ5018 only supports running at 1.1GHz, but its running at 800MHz
> by default from the bootloader so there is only one OPP.

If the bootloader sets it to 800 MHz, then this frequency is also
somehow 'supported', isn't it?

> I am glad to see more SoC-s gaining CPUFreq support.

Definitely.

>
> Regards,
> Robert
> >
> >> +            };
> >> +    };
> >> +
> >>      firmware {
> >>              scm {
> >>                      compatible = "qcom,scm-ipq5018", "qcom,scm";
> >> @@ -181,6 +197,24 @@ v2m1: v2m@1000 {
> >>                      };
> >>              };
> >>
> >> +            a53pll: clock@b116000 {
> >> +                    compatible = "qcom,ipq5018-a53pll";
> >> +                    reg = <0x0b116000 0x40>;
> >> +                    #clock-cells = <0>;
> >> +                    clocks = <&xo_board_clk>;
> >> +                    clock-names = "xo";
> >> +            };
> >> +
> >> +            apcs_glb: mailbox@b111000 {
> > 0xb111000 looks lower than 0x116000.
> >
> >> +                    compatible = "qcom,ipq5018-apcs-apps-global",
> >> +                                 "qcom,ipq6018-apcs-apps-global";
> >> +                    reg = <0x0b111000 0x1000>;
> > Best regards,
> > Krzysztof
> >
> >
> >
Krzysztof Kozlowski Aug. 29, 2023, 11:10 a.m. UTC | #4
On 29/08/2023 12:56, Robert Marko wrote:
> 
> On 29. 08. 2023. 12:12, Krzysztof Kozlowski wrote:
>> On 29/08/2023 11:54, Gokul Sriram Palanisamy wrote:
>>> Add the APCS, A53 PLL, cpu-opp-table nodes to set
>>> the CPU frequency at optimal range.
>>>
>>> Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
>>> Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
>>> Signed-off-by: Gokul Sriram Palanisamy <quic_gokulsri@quicinc.com>
>>> ---
>>>   arch/arm64/boot/dts/qcom/ipq5018.dtsi | 34 +++++++++++++++++++++++++++
>>>   1 file changed, 34 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
>>> index 9f13d2dcdfd5..05843517312c 100644
>>> --- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
>>> @@ -8,6 +8,7 @@
>>>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>>>   #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
>>>   #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
>>> +#include <dt-bindings/clock/qcom,apss-ipq.h>
>> c is before r.
>>
>>>   
>>>   / {
>>>   	interrupt-parent = <&intc>;
>>> @@ -36,6 +37,8 @@ CPU0: cpu@0 {
>>>   			reg = <0x0>;
>>>   			enable-method = "psci";
>>>   			next-level-cache = <&L2_0>;
>>> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
>>> +			operating-points-v2 = <&cpu_opp_table>;
>>>   		};
>>>   
>>>   		CPU1: cpu@1 {
>>> @@ -44,6 +47,8 @@ CPU1: cpu@1 {
>>>   			reg = <0x1>;
>>>   			enable-method = "psci";
>>>   			next-level-cache = <&L2_0>;
>>> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
>>> +			operating-points-v2 = <&cpu_opp_table>;
>>>   		};
>>>   
>>>   		L2_0: l2-cache {
>>> @@ -54,6 +59,17 @@ L2_0: l2-cache {
>>>   		};
>>>   	};
>>>   
>>> +	cpu_opp_table: opp-table-cpu {
>>> +		compatible = "operating-points-v2";
>>> +		opp-shared;
>>> +
>>> +		opp-1008000000 {
>>> +			opp-hz = /bits/ 64 <1008000000>;
>>> +			opp-microvolt = <1100000>;
>>> +			clock-latency-ns = <200000>;
>> And the rest of OPPs?
> Hi Krzysztof,
> IPQ5018 only supports running at 1.1GHz, but its running at 800MHz
> by default from the bootloader so there is only one OPP.

Isn't this contradictory? If it is running at 800 initially, then it
supports running at 800...


Best regards,
Krzysztof
Robert Marko Aug. 29, 2023, 11:18 a.m. UTC | #5
On Tue, 29 Aug 2023 at 13:10, Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 29/08/2023 12:56, Robert Marko wrote:
> >
> > On 29. 08. 2023. 12:12, Krzysztof Kozlowski wrote:
> >> On 29/08/2023 11:54, Gokul Sriram Palanisamy wrote:
> >>> Add the APCS, A53 PLL, cpu-opp-table nodes to set
> >>> the CPU frequency at optimal range.
> >>>
> >>> Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
> >>> Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
> >>> Signed-off-by: Gokul Sriram Palanisamy <quic_gokulsri@quicinc.com>
> >>> ---
> >>>   arch/arm64/boot/dts/qcom/ipq5018.dtsi | 34 +++++++++++++++++++++++++++
> >>>   1 file changed, 34 insertions(+)
> >>>
> >>> diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> >>> index 9f13d2dcdfd5..05843517312c 100644
> >>> --- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> >>> +++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> >>> @@ -8,6 +8,7 @@
> >>>   #include <dt-bindings/interrupt-controller/arm-gic.h>
> >>>   #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
> >>>   #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
> >>> +#include <dt-bindings/clock/qcom,apss-ipq.h>
> >> c is before r.
> >>
> >>>
> >>>   / {
> >>>     interrupt-parent = <&intc>;
> >>> @@ -36,6 +37,8 @@ CPU0: cpu@0 {
> >>>                     reg = <0x0>;
> >>>                     enable-method = "psci";
> >>>                     next-level-cache = <&L2_0>;
> >>> +                   clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> >>> +                   operating-points-v2 = <&cpu_opp_table>;
> >>>             };
> >>>
> >>>             CPU1: cpu@1 {
> >>> @@ -44,6 +47,8 @@ CPU1: cpu@1 {
> >>>                     reg = <0x1>;
> >>>                     enable-method = "psci";
> >>>                     next-level-cache = <&L2_0>;
> >>> +                   clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> >>> +                   operating-points-v2 = <&cpu_opp_table>;
> >>>             };
> >>>
> >>>             L2_0: l2-cache {
> >>> @@ -54,6 +59,17 @@ L2_0: l2-cache {
> >>>             };
> >>>     };
> >>>
> >>> +   cpu_opp_table: opp-table-cpu {
> >>> +           compatible = "operating-points-v2";
> >>> +           opp-shared;
> >>> +
> >>> +           opp-1008000000 {
> >>> +                   opp-hz = /bits/ 64 <1008000000>;
> >>> +                   opp-microvolt = <1100000>;
> >>> +                   clock-latency-ns = <200000>;
> >> And the rest of OPPs?
> > Hi Krzysztof,
> > IPQ5018 only supports running at 1.1GHz, but its running at 800MHz
> > by default from the bootloader so there is only one OPP.
>
> Isn't this contradictory? If it is running at 800 initially, then it
> supports running at 800...

I can only guess that it's not validated at 800MHz.

Regards,
Robert
>
>
> Best regards,
> Krzysztof
>
Gokul Sriram P Aug. 30, 2023, 6:48 a.m. UTC | #6
>>>>>    #include <dt-bindings/interrupt-controller/arm-gic.h>
>>>>>    #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
>>>>>    #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
>>>>> +#include <dt-bindings/clock/qcom,apss-ipq.h>
>>>> c is before r.
  Sure, will update.

[...]
>>>>
>>>>> +   cpu_opp_table: opp-table-cpu {
>>>>> +           compatible = "operating-points-v2";
>>>>> +           opp-shared;
>>>>> +
>>>>> +           opp-1008000000 {
>>>>> +                   opp-hz = /bits/ 64 <1008000000>;
>>>>> +                   opp-microvolt = <1100000>;
>>>>> +                   clock-latency-ns = <200000>;
>>>> And the rest of OPPs?
>>> Hi Krzysztof,
>>> IPQ5018 only supports running at 1.1GHz, but its running at 800MHz
>>> by default from the bootloader so there is only one OPP.
>> Isn't this contradictory? If it is running at 800 initially, then it
>> supports running at 800...
> I can only guess that it's not validated at 800MHz.
As per the h/w design team, there is negligible power or thermal benefit 
by lowering to 800MHz clock.
Hence, 800MHz opp wasn't included here.
>
> Regards,
> Robert
>>
>> Best regards,
>> Krzysztof
>>
Gokul Sriram P Aug. 30, 2023, 6:50 a.m. UTC | #7
[...]
>>>   +        a53pll: clock@b116000 {
>>> +            compatible = "qcom,ipq5018-a53pll";
>>> +            reg = <0x0b116000 0x40>;
>>> +            #clock-cells = <0>;
>>> +            clocks = <&xo_board_clk>;
>>> +            clock-names = "xo";
>>> +        };
>>> +
>>> +        apcs_glb: mailbox@b111000 {
>> 0xb111000 looks lower than 0x116000.
Sure, will update.

Regards,
Gokul
Dmitry Baryshkov Aug. 30, 2023, 7:42 p.m. UTC | #8
On Wed, 30 Aug 2023 at 21:32, Gokul Sriram P <quic_gokulsri@quicinc.com> wrote:
>
>
> >>>>>    #include <dt-bindings/interrupt-controller/arm-gic.h>
> >>>>>    #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
> >>>>>    #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
> >>>>> +#include <dt-bindings/clock/qcom,apss-ipq.h>
> >>>> c is before r.
>   Sure, will update.
>
> [...]
> >>>>
> >>>>> +   cpu_opp_table: opp-table-cpu {
> >>>>> +           compatible = "operating-points-v2";
> >>>>> +           opp-shared;
> >>>>> +
> >>>>> +           opp-1008000000 {
> >>>>> +                   opp-hz = /bits/ 64 <1008000000>;
> >>>>> +                   opp-microvolt = <1100000>;
> >>>>> +                   clock-latency-ns = <200000>;
> >>>> And the rest of OPPs?
> >>> Hi Krzysztof,
> >>> IPQ5018 only supports running at 1.1GHz, but its running at 800MHz
> >>> by default from the bootloader so there is only one OPP.
> >> Isn't this contradictory? If it is running at 800 initially, then it
> >> supports running at 800...
> > I can only guess that it's not validated at 800MHz.
> As per the h/w design team, there is negligible power or thermal benefit
> by lowering to 800MHz clock.
> Hence, 800MHz opp wasn't included here.

Just my 2c. If 800 MHz is supported, it should be included. Even if
just to prevent the kernel from throwing a warning about the CPU
running at the unsupported frequency. Then one can use scheduler
tunings to prevent the CPU from going to 800 MHz state.
Gokul Sriram P Aug. 31, 2023, 6:10 a.m. UTC | #9
On 8/31/2023 1:12 AM, Dmitry Baryshkov wrote:
> On Wed, 30 Aug 2023 at 21:32, Gokul Sriram P <quic_gokulsri@quicinc.com> wrote:
>>
>>>>>>>     #include <dt-bindings/interrupt-controller/arm-gic.h>
>>>>>>>     #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
>>>>>>>     #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
>>>>>>> +#include <dt-bindings/clock/qcom,apss-ipq.h>
>>>>>> c is before r.
>>    Sure, will update.
>>
>> [...]
>>>>>>> +   cpu_opp_table: opp-table-cpu {
>>>>>>> +           compatible = "operating-points-v2";
>>>>>>> +           opp-shared;
>>>>>>> +
>>>>>>> +           opp-1008000000 {
>>>>>>> +                   opp-hz = /bits/ 64 <1008000000>;
>>>>>>> +                   opp-microvolt = <1100000>;
>>>>>>> +                   clock-latency-ns = <200000>;
>>>>>> And the rest of OPPs?
>>>>> Hi Krzysztof,
>>>>> IPQ5018 only supports running at 1.1GHz, but its running at 800MHz
>>>>> by default from the bootloader so there is only one OPP.
>>>> Isn't this contradictory? If it is running at 800 initially, then it
>>>> supports running at 800...
>>> I can only guess that it's not validated at 800MHz.
>> As per the h/w design team, there is negligible power or thermal benefit
>> by lowering to 800MHz clock.
>> Hence, 800MHz opp wasn't included here.
> Just my 2c. If 800 MHz is supported, it should be included. Even if
> just to prevent the kernel from throwing a warning about the CPU
> running at the unsupported frequency. Then one can use scheduler
> tunings to prevent the CPU from going to 800 MHz state.

sure, understood. Will add opp at 800MHz. Thanks.

Regards,
Gokul
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
index 9f13d2dcdfd5..05843517312c 100644
--- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
@@ -8,6 +8,7 @@ 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
 #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
+#include <dt-bindings/clock/qcom,apss-ipq.h>
 
 / {
 	interrupt-parent = <&intc>;
@@ -36,6 +37,8 @@  CPU0: cpu@0 {
 			reg = <0x0>;
 			enable-method = "psci";
 			next-level-cache = <&L2_0>;
+			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
+			operating-points-v2 = <&cpu_opp_table>;
 		};
 
 		CPU1: cpu@1 {
@@ -44,6 +47,8 @@  CPU1: cpu@1 {
 			reg = <0x1>;
 			enable-method = "psci";
 			next-level-cache = <&L2_0>;
+			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
+			operating-points-v2 = <&cpu_opp_table>;
 		};
 
 		L2_0: l2-cache {
@@ -54,6 +59,17 @@  L2_0: l2-cache {
 		};
 	};
 
+	cpu_opp_table: opp-table-cpu {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-1008000000 {
+			opp-hz = /bits/ 64 <1008000000>;
+			opp-microvolt = <1100000>;
+			clock-latency-ns = <200000>;
+		};
+	};
+
 	firmware {
 		scm {
 			compatible = "qcom,scm-ipq5018", "qcom,scm";
@@ -181,6 +197,24 @@  v2m1: v2m@1000 {
 			};
 		};
 
+		a53pll: clock@b116000 {
+			compatible = "qcom,ipq5018-a53pll";
+			reg = <0x0b116000 0x40>;
+			#clock-cells = <0>;
+			clocks = <&xo_board_clk>;
+			clock-names = "xo";
+		};
+
+		apcs_glb: mailbox@b111000 {
+			compatible = "qcom,ipq5018-apcs-apps-global",
+				     "qcom,ipq6018-apcs-apps-global";
+			reg = <0x0b111000 0x1000>;
+			#clock-cells = <1>;
+			clocks = <&a53pll>, <&xo_board_clk>;
+			clock-names = "pll", "xo";
+			#mbox-cells = <1>;
+		};
+
 		timer@b120000 {
 			compatible = "arm,armv7-timer-mem";
 			reg = <0x0b120000 0x1000>;