diff mbox series

[v1,13/14] arm64: dts: imx8mq-librem5: Reduce I2C frequency to 384kHz

Message ID 20230309204608.237605-14-martin.kepplinger@puri.sm (mailing list archive)
State New, archived
Headers show
Series arm64: dts: imx8mq-librem5: updates and fixes until march 2023 | expand

Commit Message

Martin Kepplinger March 9, 2023, 8:46 p.m. UTC 
From: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>

According to imx8mq errata (ERR007805):

> To meet the clock low period requirement in fast speed mode,
> SCL must be configured to 384KHz or less.

Note that the imx i2c driver already implements this erratum and works
around it. This is only for the description to reflect reality.

Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
---
 arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
index 7e70663cffa30..35bde8d41e8e7 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
@@ -778,7 +778,7 @@  MX8MQ_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B	0x1f
 };
 
 &i2c1 {
-	clock-frequency = <387000>;
+	clock-frequency = <384000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
@@ -976,7 +976,7 @@  rtc@68 {
 };
 
 &i2c2 {
-	clock-frequency = <387000>;
+	clock-frequency = <384000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_i2c2>;
 	status = "okay";
@@ -1025,7 +1025,7 @@  accel_gyro: accel-gyro@6a	{
 };
 
 &i2c3 {
-	clock-frequency = <387000>;
+	clock-frequency = <384000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_i2c3>;
 	status = "okay";
@@ -1115,7 +1115,7 @@  touchscreen@38 {
 };
 
 &i2c4 {
-	clock-frequency = <387000>;
+	clock-frequency = <384000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_i2c4>;
 	status = "okay";