Re: [PATCH v2] iio: imu: st_lsm6dsx: disable I3C support during device reset

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> Hi Lorenzo,
> 
> From: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
> Date: Sun, Mar 08, 2020 at 00:06:03
> 
> > Disable MIPI I3C during device reset in order to avoid
> > possible races on interrupt line 1. If the first interrupt
> > line is asserted during hw reset the device will work in
> > I3C-only mode
> > 

[...]

> > +
> 
> After disable the i3c interface the dynamic address is no more accessible 
> and fails the initialization.
> 

Hi Vitor,

thx for testing it. What do you mean here?
Is int1 set to vdd in your test?

Regards,
Lorenzo

> Best regards,
> Vitor Soares
> 
> >  	/* device sw reset */
> >  	reg = &hw->settings->reset;
> >  	err = regmap_update_bits(hw->regmap, reg->addr, reg->mask,
> > @@ -2059,6 +2081,15 @@ static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw)
> >  
> >  	msleep(50);
> >  
> > +	/* enable MIPI I3C */
> > +	if (hw->settings->i3c_disable.addr) {
> > +		reg = &hw->settings->i3c_disable;
> > +		err = regmap_update_bits(hw->regmap, reg->addr, reg->mask,
> > +					 ST_LSM6DSX_SHIFT_VAL(0, reg->mask));
> > +		if (err < 0)
> > +			return err;
> > +	}
> > +
> >  	/* enable Block Data Update */
> >  	reg = &hw->settings->bdu;
> >  	err = regmap_update_bits(hw->regmap, reg->addr, reg->mask,
> > -- 
> > 2.24.1
> 
> 

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