linux-kernel - [PATCH 1/1] arm64: dts: imx8mm-tqma8mqml-mba8mx: Increase frequency for i2c busses

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Message-Id: <20240723110146.3133155-1-alexander.stein@ew.tq-group.com>
Date: Tue, 23 Jul 2024 13:01:46 +0200
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>
Cc: Alexander Stein <alexander.stein@...tq-group.com>,
	linux@...tq-group.com,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] arm64: dts: imx8mm-tqma8mqml-mba8mx: Increase frequency for i2c busses

100kHz is only needed for the USB Hub TUSB8041. But as this device is not
connected by default, the speed can be increased.
The other busses don't have any 100kHz only devices attached.

Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi | 1 -
 arch/arm64/boot/dts/freescale/mba8mx.dtsi           | 7 +++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
index ca0205b9019e6..8f58c84e14c8e 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
@@ -83,7 +83,6 @@ &gpu_3d {
 };
 
 &i2c1 {
-	clock-frequency = <100000>;
 	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_i2c1>;
 	pinctrl-1 = <&pinctrl_i2c1_gpio>;
diff --git a/arch/arm64/boot/dts/freescale/mba8mx.dtsi b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
index 815241526a0d3..520702a465a40 100644
--- a/arch/arm64/boot/dts/freescale/mba8mx.dtsi
+++ b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
@@ -237,7 +237,6 @@ expander1: gpio@24 {
 };
 
 &i2c2 {
-	clock-frequency = <100000>;
 	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_i2c2>;
 	pinctrl-1 = <&pinctrl_i2c2_gpio>;
@@ -258,6 +257,11 @@ sensor1: temperator-sensor@1f {
 		reg = <0x1f>;
 	};
 
+	/*
+	 * TUSB8041 is at 0x41, but not connected by default
+	 * Note: TUSB8041 only supports 100 kHz!
+	 */
+
 	eeprom3: eeprom@57 {
 		compatible = "nxp,se97b", "atmel,24c02";
 		reg = <0x57>;
@@ -274,7 +278,6 @@ pcieclk: clk@68 {
 };
 
 &i2c3 {
-	clock-frequency = <100000>;
 	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_i2c3>;
 	pinctrl-1 = <&pinctrl_i2c3_gpio>;
-- 
2.34.1