From: Francesco Dolcini <francesco@dolcini.it>
To: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Frank Li <Frank.Li@nxp.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>
Cc: Francesco Dolcini <francesco.dolcini@toradex.com>,
devicetree@vger.kernel.org, imx@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1] arm64: dts: freescale: imx95-aquila: mark +V1.2_DP as boot-on
Date: Fri, 23 Oct 2026 12:24:03 +0200 [thread overview]
Message-ID: <20261023102408.119509-1-francesco@dolcini.it> (raw)
From: Francesco Dolcini <francesco.dolcini@toradex.com>
Mark the +V1.2_DP regulator as boot-on, matching the hardware: the
CTRL_DP_BRIDGE_EN enable line of this supply of the SN65DSI86 DSI-to-DP
bridge is pulled up on the module, so the supply is on by default,
before any software runs.
Without it the regulator is briefly switched off and on again during
the board start-up, potentially disrupting I2C transactions on the bus
where the SN65DSI86 is connected.
Fixes: d5c082ba23db ("arm64: dts: freescale: add Aquila iMX95 support")
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
arch/arm64/boot/dts/freescale/imx95-aquila.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/freescale/imx95-aquila.dtsi b/arch/arm64/boot/dts/freescale/imx95-aquila.dtsi
index c5f4cf0541f2..d40514cd2e00 100644
--- a/arch/arm64/boot/dts/freescale/imx95-aquila.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95-aquila.dtsi
@@ -91,6 +91,7 @@ reg_dp_1p2v: regulator-dp-1p2v {
gpios = <&som_gpio_expander_0 7 GPIO_ACTIVE_HIGH>;
enable-active-high;
regulator-always-on;
+ regulator-boot-on;
regulator-max-microvolt = <1200000>;
regulator-min-microvolt = <1200000>;
regulator-name = "On-module +V1.2_DP";
--
2.47.3
next reply other threads:[~2026-10-23 10:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-23 10:24 Francesco Dolcini [this message]
2026-10-23 14:25 ` Daniel Baluta
2026-11-05 19:36 ` Frank.Li
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