* [PATCH 1/1] arm64: dts: imx8mm-tqma8mqml-mba8mx: Increase frequency for i2c busses
@ 2024-07-23 11:01 Alexander Stein
2024-08-12 11:45 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Alexander Stein @ 2024-07-23 11:01 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam
Cc: Alexander Stein, linux, devicetree, imx, linux-arm-kernel,
linux-kernel
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@ew.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
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH 1/1] arm64: dts: imx8mm-tqma8mqml-mba8mx: Increase frequency for i2c busses
2024-07-23 11:01 [PATCH 1/1] arm64: dts: imx8mm-tqma8mqml-mba8mx: Increase frequency for i2c busses Alexander Stein
@ 2024-08-12 11:45 ` Shawn Guo
0 siblings, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2024-08-12 11:45 UTC (permalink / raw)
To: Alexander Stein
Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam, linux,
devicetree, imx, linux-arm-kernel, linux-kernel
On Tue, Jul 23, 2024 at 01:01:46PM +0200, Alexander Stein wrote:
> 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@ew.tq-group.com>
Applied, thanks!
^ permalink raw reply [flat|nested] 2+ messages in thread
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