[PATCH V3 12/14] ARM: dts: stm32: Repair PMIC configuration on AV96

[Marek Vasut]

On 4/2/20 2:53 PM, Pascal PAILLET-LME wrote:
> Hi Marek,

Hi,
[...]
>>>>>>>  			vdd: buck3 {
>>>>>>>  				regulator-name = "vdd";
>>>>>>> -				regulator-min-microvolt = <3300000>;
>>>>>>> -				regulator-max-microvolt = <3300000>;
>>>>>>> +				regulator-min-microvolt = <2900000>;
>>>>>>> +				regulator-max-microvolt = <2900000>;
>>>>>>>  				regulator-always-on;
>>>>>>>  				st,mask_reset;
>>>>>>>  				regulator-initial-mode = <0>; @@ -
>> 268,6 +279,7 @@
>>>>>>>  				regulator-name = "vbus_otg";
>>>>>>>  				interrupts = <IT_OCP_OTG 0>;
>>>>>>>  				interrupt-parent = <&pmic>;
>>>>>>> +				regulator-active-discharge = <1>;
>>>>>> It seems this setting introduced other-consumption, it should not be
>> used.
>>>>> Other-consumption ? What does that mean ?
>>>>
>>>> It's a typo, Patrick means over-consumption.
>>>
>>> Ah. Do you have any details on that ?
>>
>> Sorry for typo.
>>
>> No details on my side, it was a Pascal Paillet's direct feedback (Maintainer of
>> STPMIC1 driver in Linux).
> You can enable the active discharge on the STPMIC1's VBUSOTG. But, as soon as a USB host peripheral (such as laptop) will attach and provide VBUS, there will be a ~8mA continuous power consumption on VBUS through this OTG active discharge. There is no functional issue behind this 8mA; but you need to know that 8mA is not compliant with the USB suspend constraint (2.5mA max).

So why is it in there ?