From: Marek Vasut <marex@denx.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Marek Vasut <marex@denx.de>, Fabio Estevam <festevam@denx.de>,
Peng Fan <peng.fan@nxp.com>, Shawn Guo <shawnguo@kernel.org>,
NXP Linux Team <linux-imx@nxp.com>
Subject: [PATCH] arm64: dts: imx8mm: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC
Date: Tue, 26 Apr 2022 22:03:29 +0200 [thread overview]
Message-ID: <20220426200329.252847-1-marex@denx.de> (raw)
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.
Fixes: 583f24ae42a07 ("arm64: dts: imx8mm: Add support for Data Modul i.MX8M Mini eDM SBC")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: NXP Linux Team <linux-imx@nxp.com>
To: linux-arm-kernel@lists.infradead.org
---
arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts
index b2d90b79f500..8c9dd09dbc74 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts
@@ -392,7 +392,7 @@ ldo6_reg: LDO6 {
&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
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next reply other threads:[~2022-04-26 20:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-26 20:03 Marek Vasut [this message]
2022-05-05 3:52 ` [PATCH] arm64: dts: imx8mm: Use 100 kHz I2C2 on Data Modul i.MX8M Mini eDM SBC Shawn Guo
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