Re: [PATCH 3/9] dt-bindings: regulator: add Qualcomm LCDB regulator
From: Konrad Dybcio
Date: Thu Oct 15 2026 - 05:17:06 EST
On 10/15/26 10:58 AM, Dmitry Baryshkov wrote:
> Several Qualcomm PMICs have an LCDB block providing the positive and
> negative bias rails for LCD panels. It is not supported by Linux, so
> boards using it either model the rails as dummy fixed regulators and
> depend on the state left by the bootloader.
>
> Describe the LCDB regulator present on the PM8150L. Use it as a fallback
> compatible for LCDB blocks on PMI632 and PM6150L. PM660L has a different
> version of LCDB block, so it's not being covered.
>
> Assisted-by: LLM
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> ---
[...]
> + lcdb@ec00 {
> + compatible = "qcom,pm8150l-lcdb";
> + reg = <0xec00>;
> + interrupts = <0x5 0xec 0x1 IRQ_TYPE_EDGE_RISING>;
> +
> + ldo {
> + regulator-min-microvolt = <4000000>;
> + regulator-max-microvolt = <6000000>;
> + };
> +
> + ncp {
> + regulator-min-microvolt = <4000000>;
> + regulator-max-microvolt = <6000000>;
> + };
Let's tighten up the example to some specific voltage to reduce
room for poor copypastas
Konrad