Hi Stefan, On Monday 04 May 2015 22:20:50 Stefan Wahren wrote: > [...] > > > > +------------+ VDD5V +---------+ VDDIO > > | DC-DC | +--------> LINREG +--------->+ > > | | | VDDIO | | > > | | +---------+ | > > | | | > > | DCDC_VDDIO +->-+-----------------------------+ > > | | | > > | | | VDDIO +---------+ VDDMEM > > | | +--------> LINREG +---------> > > | | | | VDDMEM | > > | | | +---------+ > > | | | VDDIO +---------+ VDDA > > | | +--------> LINREG +--------->+ > > | | | VDDA | | > > | | +---------+ | > > | DCDC_VDDA +->-+-----------------------------+ > > | | | > > | | | VDDA +---------+ VDDD > > | | +--------> LINREG +--------->+ > > | | | VDDD | | > > | | +---------+ | > > | DCDC_VDDD +->-------------------------------+ > > +------------+ | > > v > > damn! I didn't noticed that VDDMEM is powered by VDDIO and VDD1P5 is > powered by VDDA. Thank you very much. > > From my understanding VDDMEM and VDD1P5 describe the same regulator > function (provides power to external memory such as SDRAM and mDDR which > doesn't fit to VDDD, VDDIO or VDDA). But the usage of > the name is not consistent across the documentation: > | i.MX23 | i.MX28 > ------------------------------------ > Application note | VDDMEM | VDD1P5 > Reference manual | VDDMEM | VDDMEM > Data sheet | - | VDD1P5 > > I would suggest to use VDDMEM, because the registers are always called > HW_VDDMEM (for both SoCs). Ack. > I think we have 3 options here: > > a) add the regulator daisy chain for the i.MX23 too > b) remove VDD1P5 from the i.MX28 diagram so it would fit for both again > c) remove the diagram complete > > I would prefer option b. What's your opinion? I prefer a) because once the details are known, we should keep them. Regards, Juergen -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
