* [PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC
@ 2022-04-22 8:57 Marek Vasut
2022-05-20 13:41 ` sbabic
0 siblings, 1 reply; 4+ messages in thread
From: Marek Vasut @ 2022-04-22 8:57 UTC (permalink / raw)
To: u-boot; +Cc: Marek Vasut, Fabio Estevam, Peng Fan, Stefano Babic
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
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC
2022-04-22 8:57 [PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC Marek Vasut
@ 2022-05-20 13:41 ` sbabic
0 siblings, 0 replies; 4+ messages in thread
From: sbabic @ 2022-05-20 13:41 UTC (permalink / raw)
To: Marek Vasut, u-boot
> 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
--
=====================================================================
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic@denx.de
=====================================================================
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC
2022-04-25 22:16 Marek Vasut
@ 2022-04-25 22:17 ` Fabio Estevam
0 siblings, 0 replies; 4+ messages in thread
From: Fabio Estevam @ 2022-04-25 22:17 UTC (permalink / raw)
To: Marek Vasut; +Cc: u-boot, Peng Fan, Stefano Babic
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>
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC
@ 2022-04-25 22:16 Marek Vasut
2022-04-25 22:17 ` Fabio Estevam
0 siblings, 1 reply; 4+ messages in thread
From: Marek Vasut @ 2022-04-25 22:16 UTC (permalink / raw)
To: u-boot; +Cc: Marek Vasut, Fabio Estevam, Peng Fan, Stefano Babic
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
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-05-20 13:44 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2022-04-22 8:57 [PATCH] ARM: dts: imx: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC Marek Vasut
2022-05-20 13:41 ` sbabic
2022-04-25 22:16 Marek Vasut
2022-04-25 22:17 ` Fabio Estevam
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