On Thu, 26 Feb 2026 at 15:42, Konrad Dybcio <[email protected]> wrote: > > On 2/26/26 7:55 AM, Krzysztof Kozlowski wrote: > > On 25/02/2026 21:03, Yedaya Katsman wrote: > >> On Wed, 25 Feb 2026 at 17:45, Krzysztof Kozlowski <[email protected]> wrote: > >>> > >>> On 25/02/2026 16:29, Yedaya Katsman wrote: > >>>>>> + vddio-supply: true > >>>>>> + ldo-supply: true > >>>>> > >>>>> LDO is the name of the type of regulator. Why is it called as name of > >>>>> the supply? > >>>> Can you explain more what you mean? Do you mean to change the name of > >>>> the property? It seems that all the regulator properties are named > >>>> foo-supply. > >>> > >>> I just have doubts that the device has supplied called LDO, considering > >>> what LDO means. > >> OK. I don't really have a way to verify if it's true, all I have is > >> the downstream dts > >> which calls it LDO [0] > >> > >> [0] > >> https://github.com/MiCode/Xiaomi_Kernel_OpenSource/blob/d3766fc8cda2d96de2850faa9ce58e5a37ea9f9c/arch/arm64/boot/dts/qcom/trinket-sde-display.dtsi#L24-L36 > > > > Obviously the regulator is LDO, so they called it. Most of the > > regulators are LDO, so why VDD IN is not called LDO? > > > > This is name of the supply in this device. > > Yedaya, in case you didn't catch it, LDO is an acronym: > > https://en.wikipedia.org/wiki/Low-dropout_regulator > > The vendor driver probably calls it that, because the input leg of > the panel's driver IC just so happens to be connected to a regulator > of this kind > > If we don't know the actual name of that input and have no way to verify > it, I think 'power-supply' would be a good generic consensus, it happens > to be reasonably common across other bindings Thanks for further explaining. I managed to find the schematic (Thanks to Kamil finding it first and making me look for it)[0]. It seems that this specifically is VDDI supply regulator, while the one called iovcc in the dts is actually a VCI regulator. The vddio-supply is called VREG_L9_LVS and connects to the output of the vddi regulator.
My current plan is to call them vddi-supply and vci-supply in the binding, but I'm not sure what to call what's currently vddio-supply. [0] https://androidfreefile.com/wp-content/uploads/Xiaomi_Mi_A3_Schematic.pdf > Konrad Thanks, Yedaya
