[PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC

[PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC

[Marek Vasut]

The I2C2 has SMBus device SMSC USB2514Bi connected to it, the device is
capable of up to 100 kHz operation. Reduce the bus frequency to 100 kHz
to guarantee this I2C device can work correctly.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
---
 arch/arm/dts/imx8mm-data-modul-edm-sbc.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/dts/imx8mm-data-modul-edm-sbc.dts b/arch/arm/dts/imx8mm-data-modul-edm-sbc.dts
index 154116d01c9..5b022040902 100644
--- a/arch/arm/dts/imx8mm-data-modul-edm-sbc.dts
+++ b/arch/arm/dts/imx8mm-data-modul-edm-sbc.dts
@@ -392,7 +392,7 @@
 
 &i2c2 {
 	/* IMX8MM ERRATA e7805 -- I2C is limited to 384 kHz due to SoC bug */
-	clock-frequency = <320000>;
+	clock-frequency = <100000>;
 	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_i2c2>;
 	pinctrl-1 = <&pinctrl_i2c2_gpio>;
-- 
2.35.1

Re: [PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC

[Fabio Estevam]

On 25/04/2022 19:16, Marek Vasut wrote:
> The I2C2 has SMBus device SMSC USB2514Bi connected to it, the device is
> capable of up to 100 kHz operation. Reduce the bus frequency to 100 kHz
> to guarantee this I2C device can work correctly.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Fabio Estevam <festevam@denx.de>
> Cc: Peng Fan <peng.fan@nxp.com>
> Cc: Stefano Babic <sbabic@denx.de>

Reviewed-by: Fabio Estevam <festevam@denx.de>

[PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC

[Marek Vasut]

The I2C2 has SMBus device SMSC USB2514Bi connected to it, the device is
capable of up to 100 kHz operation. Reduce the bus frequency to 100 kHz
to guarantee this I2C device can work correctly.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
---
 arch/arm/dts/imx8mm-data-modul-edm-sbc.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/dts/imx8mm-data-modul-edm-sbc.dts b/arch/arm/dts/imx8mm-data-modul-edm-sbc.dts
index 154116d01c9..5b022040902 100644
--- a/arch/arm/dts/imx8mm-data-modul-edm-sbc.dts
+++ b/arch/arm/dts/imx8mm-data-modul-edm-sbc.dts
@@ -392,7 +392,7 @@
 
 &i2c2 {
 	/* IMX8MM ERRATA e7805 -- I2C is limited to 384 kHz due to SoC bug */
-	clock-frequency = <320000>;
+	clock-frequency = <100000>;
 	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_i2c2>;
 	pinctrl-1 = <&pinctrl_i2c2_gpio>;
-- 
2.35.1

[PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC

[sbabic]

> The I2C2 has SMBus device SMSC USB2514Bi connected to it, the device is
> capable of up to 100 kHz operation. Reduce the bus frequency to 100 kHz
> to guarantee this I2C device can work correctly.
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Fabio Estevam <festevam@denx.de>
> Cc: Peng Fan <peng.fan@nxp.com>
> Cc: Stefano Babic <sbabic@denx.de>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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