From: Stefano Radaelli <stefano.radaelli21@gmail.com>
To: Frank Li <Frank.Li@nxp.com>,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org
Cc: pierluigi.p@variscite.com,
Stefano Radaelli <stefano.r@variscite.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>
Subject: [PATCH v1 1/4] arm64: dts: imx91-var-som: Mark I2C recovery GPIOs as open drain
Date: Sun, 18 Oct 2026 14:32:24 +0200 [thread overview]
Message-ID: <f591f8cde74ef4b3bd0e2fcc2108b8564b195e90.1792326585.git.stefano.r@variscite.com> (raw)
In-Reply-To: <cover.1792326585.git.stefano.r@variscite.com>
From: Stefano Radaelli <stefano.r@variscite.com>
Mark the SCL and SDA GPIOs used for LPI2C3 bus recovery as open drain to
match the I2C bus requirements.
This also avoids the warning emitted when the I2C core enforces
open-drain operation on SCL.
Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
---
arch/arm64/boot/dts/freescale/imx91-var-som.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx91-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx91-var-som.dtsi
index b30a0d8a81ba..a90a784f1966 100644
--- a/arch/arm64/boot/dts/freescale/imx91-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx91-var-som.dtsi
@@ -89,8 +89,8 @@ &lpi2c3 {
pinctrl-0 = <&pinctrl_lpi2c3>;
pinctrl-1 = <&pinctrl_lpi2c3_gpio>;
pinctrl-2 = <&pinctrl_lpi2c3_gpio>;
- scl-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
- sda-gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>;
+ scl-gpios = <&gpio2 29 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ sda-gpios = <&gpio2 28 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
status = "okay";
pmic@25 {
--
2.47.3
next prev parent reply other threads:[~2026-10-18 12:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-18 12:32 [PATCH v1 0/4] arm64: dts: Mark Variscite i.MX9 " Stefano Radaelli
2026-10-18 12:32 ` Stefano Radaelli [this message]
2026-10-18 12:32 ` [PATCH v1 2/4] arm64: dts: imx91-var-som-symphony: Mark " Stefano Radaelli
2026-10-18 12:32 ` [PATCH v1 3/4] arm64: dts: imx93-var-som: " Stefano Radaelli
2026-10-18 12:32 ` [PATCH v1 4/4] arm64: dts: imx93-var-som-symphony: " Stefano Radaelli
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