`regulator-always-on;` in ibb improves display blanking issue

Signed-off-by: Paul Sajna <sajattack@postmarketos.org>
---
 arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
index beb1372dc6c17f5f06c2044412ee1c8165858cd1..44ab98964ffe722144e01efc41e135dc7700fe95 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
@@ -69,10 +69,28 @@ zap-shader {
 	};
 };
 
+&ibb {
+	regulator-min-microvolt = <4600000>;
+	regulator-max-microvolt = <6000000>;
+	regulator-over-current-protection;
+	regulator-pull-down;
+	regulator-soft-start;
+	regulator-always-on;
+	qcom,discharge-resistor-kohms = <300>;
+};
+
 &ipa {
 	firmware-name = "qcom/sdm845/LG/judyln/ipa_fws.mbn";
 };
 
+&lab {
+	regulator-min-microvolt = <4600000>;
+	regulator-max-microvolt = <6000000>;
+	regulator-over-current-protection;
+	regulator-pull-down;
+	regulator-soft-start;
+};
+
 &mdss {
 	status = "okay";
 };

-- 
2.51.0

On 9/17/25 3:09 AM, Paul Sajna wrote:
> `regulator-always-on;` in ibb improves display blanking issue

..but doesn't let you save power when the display is not in use

That suggests your panel driver may not be sequencing the supplies
properly (or maybe the reset pin/commands may be misplaced)

Konrad