December 4, 2025 at 12:50 PM, "Konrad Dybcio" <[email protected] mailto:[email protected]?to=%22Konrad%20Dybcio%22%20%3Ckonrad.dybcio%40oss.qualcomm.com%3E > wrote:
> > On 12/3/25 10:40 AM, Paul Sajna wrote: > > > > > These regulators are required for the LCD > > > > Signed-off-by: Paul Sajna <[email protected]> > > --- > > arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts | 17 +++++++++++++++++ > > 1 file changed, 17 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts > > b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts > > index 8b88f75b36af..cdaf84de5e6c 100644 > > --- a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts > > +++ b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts > > @@ -56,10 +56,27 @@ zap-shader { > > }; > > }; > > > > +&ibb { > > + regulator-min-microvolt = <5500000>; > > + regulator-max-microvolt = <5700000>; > > > These ranges seem much more reasonable, although I would still > expect there's a single operational voltage - unless the panel driver > is supposed to call regulator_set_voltage() in some different power > modes? > > Konrad > So min/max both 55? Or is there another property I should use? I wasn't sure if that would be physically hard for the regulator to maintain such precision, so I cross-referenced some other DTs in the qcom folder and found this 200mv allowance in one of the sony devices.
