[PATCH] ARM: tegra: Enable CPUFreq support for Tegra124 Chromebooks

[Tomeu Vizoso]

On 13 July 2015 at 15:08, Jon Hunter <jonathanh at nvidia.com> wrote:
> On 03/06/15 12:44, Jon Hunter wrote:
>> Adding LAKML. Jon
>>
>> On 03/06/15 12:43, Jon Hunter wrote:
>>> Add the device-tree DFLL clock node and CPU regulator phandle for
>>> tegra124 chromebooks to enable CPUFreq support on these boards.

Ping.

Thanks,

Tomeu

>>> Signed-off-by: Jon Hunter <jonathanh at nvidia.com>
>>>
>>> ---
>>> This has been tested on a tegra124 nyan-big by using the userspace
>>> CPUFreq governor with a simple CPU benchmark to measure the time taken
>>> for the test to execute.
>>>
>>> The tegra124 chromebooks use the same ams,as3722 PMIC as the Jetson TK1
>>> board and hence, this change is based upon that for the Jetson TK1.
>>>
>>>  arch/arm/boot/dts/tegra124-nyan.dtsi | 15 ++++++++++++++-
>>>  1 file changed, 14 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/arch/arm/boot/dts/tegra124-nyan.dtsi b/arch/arm/boot/dts/tegra124-nyan.dtsi
>>> index a9aec23e06f2..40c23a0b7cfc 100644
>>> --- a/arch/arm/boot/dts/tegra124-nyan.dtsi
>>> +++ b/arch/arm/boot/dts/tegra124-nyan.dtsi
>>> @@ -159,7 +159,7 @@
>>>                              vin-ldo9-10-supply = <&vdd_5v0_sys>;
>>>                              vin-ldo11-supply = <&vdd_3v3_run>;
>>>
>>> -                            sd0 {
>>> +                            vdd_cpu: sd0 {
>>>                                      regulator-name = "+VDD_CPU_AP";
>>>                                      regulator-min-microvolt = <700000>;
>>>                                      regulator-max-microvolt = <1350000>;
>>> @@ -397,6 +397,13 @@
>>>              non-removable;
>>>      };
>>>
>>> +    /* CPU DFLL clock */
>>> +    clock at 0,70110000 {
>>> +            status = "okay";
>>> +            vdd-cpu-supply = <&vdd_cpu>;
>>> +            nvidia,i2c-fs-rate = <400000>;
>>> +    };
>>> +
>>>      ahub at 0,70300000 {
>>>              i2s at 0,70301100 {
>>>                      status = "okay";
>>> @@ -487,6 +494,12 @@
>>>              };
>>>      };
>>>
>>> +    cpus {
>>> +            cpu at 0 {
>>> +                    vdd-cpu-supply = <&vdd_cpu>;
>>> +            };
>>> +    };
>>> +
>>>      gpio-keys {
>>>              compatible = "gpio-keys";
>
> Stephen, Thierry,
>
> Are you ok with this change?
>
> Jon
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