On Sat, 29 Oct 2022 10:44:38 +0530, Manivannan Sadhasivam wrote: > As per the new ADC7 architecture used by the Qualcomm PMICs, each PMIC > has the static Slave ID (SID) assigned by default. The primary PMIC > PMK8350 is responsible for collecting the temperature/voltage data from > the slave PMICs and exposing them via it's registers. > > For getting the measurements from the slave PMICs, PMK8350 uses the > channel ID encoded with the SID of the relevant PMIC. So far, the > dt-binding for the slave PMIC PM8350 assumed that there will be only > one PM8350 in a system. So it harcoded SID 1 with channel IDs. > > But this got changed in platforms such as Lenovo X13s where there are a > couple of PM8350 PMICs available. So to address multiple PM8350s, change > the binding to accept the SID specified by the user and use it for > encoding the channel ID. > > It should be noted that, even though the SID is static it is not > globally unique. Only the primary PMIC has the unique SID id 0. > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> > --- > .../bindings/thermal/qcom-spmi-adc-tm5.yaml | 6 +- > .../dt-bindings/iio/qcom,spmi-adc7-pm8350.h | 90 +++++++++---------- > 2 files changed, 46 insertions(+), 50 deletions(-) > Acked-by: Rob Herring <robh@xxxxxxxxxx>
