On 30 June 2017 at 12:41, Mark Brown <[email protected]> wrote: > On Thu, Jun 29, 2017 at 09:18:09AM +0200, Waldemar Rymarkiewicz wrote: > >> Initially, on boot, the voltage is set by HW (sensing resistors). When >> OS starts and the reg driver registers regulator with the specific >> constraints uV_min and uV_max, regulator core will apply uV_min or >> uV_max if current (in regulator register) setting is not in the range. >> Normally, by default register holds min(voltage_table) which is >> different than the value set by HW (sensing resistors). > > You shoudn't be specfiying a default value for the register, clearly > there is none as it is determined dynamically by the hardware when the > system boots.
Thanks Mark for your feedback. I am not sure if I understand. Do you mean, a regulator should determine a voltage and update a register with a right selector when system boots, so the regulator framework reading reg register knows actual voltage? BTW, I work with TPS65273 regulator. /Waldek
