Re: [PATCH v3 2/3] power: supply: Add bd718(15/28/78) charger driver

[Matti Vaittinen]

On 29/08/2025 09:35, Matti Vaittinen wrote:

> > Some of these look like they should immediately shut down the
> > system, I suppose the battery charger does this autonomously
> > but it should probably also trigger an emergency shutdown
> > of Linux, right?
>
> Yes. The shutdown for charging, or, in some cases for all power outputs, 
> is automatically handled by the PMIC hardware. (Well, I am not sure 
> about the 'over-current' IRQ, will see if I can find out more about it).

Just to conclude this - I got a confirmation from the ROHM hardware 
engineers that exceeding the set limit and causing the over-current and 
the coulomb counter monitoring interrupts do not change the hardware 
charging state. [CC_MON and OCUR events in the data sheet, if someone 
has that ;) ].

The CC_MON1 will however cause a change in the charging LED state. Eg, 
exceeding this limit will turn off the AMBLED and turn on the GRNLED - 
when the LEDs are controlled by the HW state machine. (I have some very 
faint memory that the LEDs could also be forced ON by software). I 
suppose the reason for this is that the CC_MON1 was designed to be used 
as a "coulomb counter near full capacity" alarm.

Yours,
	-- Matti