On Mon, Aug 27, 2018 at 11:00 AM Teemu K <[email protected]> wrote: > > Hi, > > This is somewhat simple thing that turned out not to be so simple. > > We have custom i.MX6Q based HW running Yocto 2.4 and Linux 4.1-2.0... > and VDDARM_IN is set to 1.425V. Also VDDSOC_IN is set to 1.425V. They > both come from external PMIC as usually do. > > Now the VDD_SOC_CAP should be set to 1.375V without changing the > VDDARM_IN. I think this should be possible by setting the LDO_DIG(SOC) > to 1.375V. > > That's the part that I couldn't figure out. I have following in device tree: > -- > fsl,soc-operating-points = < > /* ARM kHz SOC-PU uV */ > 1200000 1375000 > 996000 1375000 > 852000 1375000 > 792000 1375000 > 396000 1375000 > >; > -- > > But that controls the PMIC and LDO. I just want to change the LDO > output (VDD_SOC_CAP). I only seem to be able to same both values not > just one. > Okay, so it seems I misunderstood the problem so replying to my own message.
I need to set PMIC voltages, not LDO so VDD_SOC_IN should be set to 1.375V, but leave the VDD_ARM_IN to 1.425V. The setup above changes them both which is not desired. Is there a way to configure just VDD_SOC_IN - part without modifying the driver? -Teemu -- _______________________________________________ meta-freescale mailing list [email protected] https://lists.yoctoproject.org/listinfo/meta-freescale
