From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
Lee Jones <lee@kernel.org>, Daniel Thompson <danielt@kernel.org>,
Jingoo Han <jingoohan1@gmail.com>, Helge Deller <deller@gmx.de>,
Kiran Gunda <quic_kgunda@quicinc.com>,
Subbaraman Narayanamurthy <quic_subbaram@quicinc.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Stephen Boyd <sboyd@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Abel Vesa <abelvesa@kernel.org>,
Dmitry Baryshkov <lumag@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, mfd@lists.linux.dev
Subject: Re: [PATCH 3/9] dt-bindings: regulator: add Qualcomm LCDB regulator
Date: Thu, 15 Oct 2026 11:14:34 +0200 [thread overview]
Message-ID: <8c375f13-ecd2-4ceb-8bc8-949a90f971fc@oss.qualcomm.com> (raw)
In-Reply-To: <20261015-sm8150-display-card-v1-3-5c14928cef29@oss.qualcomm.com>
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@oss.qualcomm.com>
> ---
[...]
> + 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
next prev parent reply other threads:[~2026-10-15 9:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-15 8:58 [PATCH 0/9] arm64: qcom: enable display card support on SM8150 HDK Dmitry Baryshkov
2026-10-15 8:58 ` [PATCH 1/9] backlight: qcom-wled: fix unbalanced OVP interrupt enable Dmitry Baryshkov
2026-10-15 9:11 ` Konrad Dybcio
2026-10-15 9:44 ` Dmitry Baryshkov
2026-10-15 8:58 ` [PATCH 2/9] backlight: qcom-wled: fix string detection brightness on WLED5 Dmitry Baryshkov
2026-10-15 9:13 ` Konrad Dybcio
2026-10-15 8:58 ` [PATCH 3/9] dt-bindings: regulator: add Qualcomm LCDB regulator Dmitry Baryshkov
2026-10-15 9:14 ` Konrad Dybcio [this message]
2026-10-15 18:39 ` Mark Brown
2026-10-15 8:58 ` [PATCH 4/9] dt-bindings: mfd: qcom,spmi-pmic: add LCDB Dmitry Baryshkov
2026-10-15 8:58 ` [PATCH 5/9] regulator: add Qualcomm LCDB driver Dmitry Baryshkov
2026-10-15 8:58 ` [PATCH 6/9] arm64: dts: qcom: pm8150l: add LCDB regulators Dmitry Baryshkov
2026-10-15 8:58 ` [PATCH 7/9] arm64: dts: qcom: sm8150: add MDSS reset Dmitry Baryshkov
2026-10-15 9:15 ` Konrad Dybcio
2026-10-15 8:58 ` [PATCH 8/9] arm64: dts: qcom: sm8150-hdk: fix FSA4480 address Dmitry Baryshkov
2026-10-15 9:10 ` Konrad Dybcio
2026-10-15 9:11 ` Konrad Dybcio
2026-10-15 8:58 ` [PATCH 9/9] arm64: dts: qcom: sm8150-hdk: add display card overlay Dmitry Baryshkov
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