linux-kernel - [PATCH v4 01/12] arm64: dts: imx8mm-kontron: Disable pullups for I2C signals on OSM-S i.MX8MM

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Date: Mon,  8 Jan 2024 09:48:58 +0100
From: Frieder Schrempf <frieder@...s.de>
To: Conor Dooley <conor+dt@...nel.org>,
	devicetree@...r.kernel.org,
	Frieder Schrempf <frieder.schrempf@...tron.de>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>
Cc: Fabio Estevam <festevam@...il.com>,
	NXP Linux Team <linux-imx@....com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: [PATCH v4 01/12] arm64: dts: imx8mm-kontron: Disable pullups for I2C signals on OSM-S i.MX8MM

From: Frieder Schrempf <frieder.schrempf@...tron.de>

There are external pullup resistors on the board and due to silicon
errata ERR050080 let's disable the internal ones to prevent any
unwanted behavior in case they wear out.

Fixes: de9618e84f76 ("arm64: dts: Add support for Kontron SL/BL i.MX8MM OSM-S")
Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
---
Changes for v3:
* none

Changes for v2:
* none
---
 arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts | 4 ++--
 arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts
index 8b16bd68576c0..0730c22e5b6b9 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-osm-s.dts
@@ -294,8 +294,8 @@ MX8MM_IOMUXC_SAI3_MCLK_GPIO5_IO2		0x19
 
 	pinctrl_i2c4: i2c4grp {
 		fsl,pins = <
-			MX8MM_IOMUXC_I2C4_SCL_I2C4_SCL			0x400001c3
-			MX8MM_IOMUXC_I2C4_SDA_I2C4_SDA			0x400001c3
+			MX8MM_IOMUXC_I2C4_SCL_I2C4_SCL			0x40000083
+			MX8MM_IOMUXC_I2C4_SDA_I2C4_SDA			0x40000083
 		>;
 	};
 
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi
index 6e75ab879bf59..3e7db968f7e64 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi
@@ -252,8 +252,8 @@ MX8MM_IOMUXC_ECSPI1_SS0_GPIO5_IO9		0x19
 
 	pinctrl_i2c1: i2c1grp {
 		fsl,pins = <
-			MX8MM_IOMUXC_I2C1_SCL_I2C1_SCL			0x400001c3
-			MX8MM_IOMUXC_I2C1_SDA_I2C1_SDA			0x400001c3
+			MX8MM_IOMUXC_I2C1_SCL_I2C1_SCL			0x40000083
+			MX8MM_IOMUXC_I2C1_SDA_I2C1_SDA			0x40000083
 		>;
 	};
 
-- 
2.43.0