On 08/08/2022 21:44, Bjorn Andersson wrote: > On Thu 21 Jul 13:19 PDT 2022, Dmitry Baryshkov wrote: > >> On Thu, 21 Jul 2022 at 22:55, Bhupesh Sharma <bhupesh.sharma@xxxxxxxxxx> wrote: >>> >>> As Bjorn noted in [1], it is useful to describe the optional >>> 'reg' property for Qualcomm LPG nodes as it is used in >>> some Qualcomm dts files. >> >> I don't think this is correct. LPG block maps to several regions, so >> using just one of them in reg doesn't look correct. >> > > I agree, but I also like the uniformity of having unit addresses for the > devices on the spmi buses. regulators also do not have reg, so I guess consistency is already gone. I vote here to reflect the real hardware/device which means: 1. IIUC, the design of entire SPMI bindings and its implementation is around parent device sitting on SPMI bus and children using its regmap/io space. 2. The children are not really re-usable for different cases/devices (e.g. standalone WLED or LPG, outside of PMIC). 3. This means entire design is tightly coupled and LPG (or wled, regulators) bindings describe the piece of PMIC, thus I find appropriate skipping "reg". 4. If we want to keep the "reg", then it should rather reflect reality, so if Dmitry said - multiple items for separate IO address ranges. > >>> This fixes the following 'make dtbs_check' error reported for >>> pm8350c & sc8280xp pwm nodes: >>> >>> arch/arm64/boot/dts/qcom/sc7280-herobrine-herobrine-r1.dtb: >>> pwm@e800: 'reg' does not match any of the regexes: >>> '^led@[0-9a-f]$', 'pinctrl-[0-9]+' >> >> I'd prefer to follow the existing schema and to drop the region from >> those files. >> > > I'm fine either way, but we have more of these nodes, so I would like to > hear from the DT maintainers on the direction to take. All nodes on the > spmi bus has an (at least one) address, so it would be accurate to state > this in the node. > > It does however not seem like devicetree@, nor Krzysztof is Cc'ed on > this patch, so I've added them... > Anyway this patch has to be resent to properly reach DT patchwork. Bhupesh, Please use scripts/get_maintainer.pl to Cc relevant folks and mailing lists. While resending, add appropriate device prefix to subject, so: dt-bindings: leds: qcom-lpg: Best regards, Krzysztof
