Re: [PATCH v3 1/3] ARM: dts: da850: add cpu node and operating points to DT

[Sekhar Nori]

On 12/04/19 5:41 PM, Bartosz Golaszewski wrote:
> pt., 12 kwi 2019 o 13:26 Sekhar Nori <nsekhar@xxxxxx> napisaÅ(a):
>>
>> Hi Bartosz,
>>
>> On 08/04/19 1:29 PM, Bartosz Golaszewski wrote:
>>> From: David Lechner <david@xxxxxxxxxxxxxx>
>>>
>>> This adds a cpu node and operating points to the common da850.dtsi file.
>>>
>>> Additionally, a regulator is added to the LEGO EV3 board along with
>>> some board-specific CPU configuration.
>>>
>>> Regulators need to be hooked up on other boards to get them working.
>>>
>>> Signed-off-by: David Lechner <david@xxxxxxxxxxxxxx>
>>> Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
>>
>> I remember you mentioning about some problems using OCHI and cpufreq
>> together. Are those resolved now? CPU PLL on DA850 can affect other
>> peripheral clock frequencies too. So enabling it should really be a
>> per-board decision.
>>
> 
> The problems are still there. I've never been able to find the
> culprit, but it also occurs on TI BSP in the same way (a couple
> cpufreq transitions will make the controller unresponsive).

Is that on LCDK as well? As I recall cpufreq was never enabled on LCDK
in TI BSP.

If the OHCI problem is present on LCDK, then there is a user visible
regression on mainline after this patch. Lets enable cpufreq in LCDK
only if all working peripherals keep working afterwards.

Thanks,
Sekhar