From: Lucas Stach <l.stach@pengutronix.de> To: Shawn Guo <shawnguo@kernel.org> Cc: Fabio Estevam <festevam@gmail.com>, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, patchwork-lst@pengutronix.de Subject: [PATCH 07/10] arm64: dts: zii-ultra: fix i2c pin configuration Date: Mon, 25 Jan 2021 19:47:33 +0100 [thread overview] Message-ID: <20210125184736.1226435-7-l.stach@pengutronix.de> (raw) In-Reply-To: <20210125184736.1226435-1-l.stach@pengutronix.de> Reduce slew rate and set drive strength to 105 Ohm. The previous settings had some issues with signal ringing, due to the slew rate being too fast. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> --- .../boot/dts/freescale/imx8mq-zii-ultra.dtsi | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi index e6469e15bcbd..aa05d5fd1b3b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi @@ -661,29 +661,29 @@ pinctrl_i2c1: i2c1grp { fsl,pins = < - MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL 0x4000007f - MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA 0x4000007f + MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL 0x40000022 + MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA 0x400000a2 >; }; pinctrl_i2c2: i2c2grp { fsl,pins = < - MX8MQ_IOMUXC_I2C2_SCL_I2C2_SCL 0x4000007f - MX8MQ_IOMUXC_I2C2_SDA_I2C2_SDA 0x4000007f + MX8MQ_IOMUXC_I2C2_SCL_I2C2_SCL 0x40000022 + MX8MQ_IOMUXC_I2C2_SDA_I2C2_SDA 0x400000a2 >; }; pinctrl_i2c3: i2c3grp { fsl,pins = < - MX8MQ_IOMUXC_I2C3_SCL_I2C3_SCL 0x4000007f - MX8MQ_IOMUXC_I2C3_SDA_I2C3_SDA 0x4000007f + MX8MQ_IOMUXC_I2C3_SCL_I2C3_SCL 0x40000022 + MX8MQ_IOMUXC_I2C3_SDA_I2C3_SDA 0x400000a2 >; }; pinctrl_i2c4: i2c4grp { fsl,pins = < - MX8MQ_IOMUXC_I2C4_SCL_I2C4_SCL 0x4000007f - MX8MQ_IOMUXC_I2C4_SDA_I2C4_SDA 0x4000007f + MX8MQ_IOMUXC_I2C4_SCL_I2C4_SCL 0x40000022 + MX8MQ_IOMUXC_I2C4_SDA_I2C4_SDA 0x400000a2 >; }; -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Lucas Stach <l.stach@pengutronix.de> To: Shawn Guo <shawnguo@kernel.org> Cc: devicetree@vger.kernel.org, Fabio Estevam <festevam@gmail.com>, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org, patchwork-lst@pengutronix.de Subject: [PATCH 07/10] arm64: dts: zii-ultra: fix i2c pin configuration Date: Mon, 25 Jan 2021 19:47:33 +0100 [thread overview] Message-ID: <20210125184736.1226435-7-l.stach@pengutronix.de> (raw) In-Reply-To: <20210125184736.1226435-1-l.stach@pengutronix.de> Reduce slew rate and set drive strength to 105 Ohm. The previous settings had some issues with signal ringing, due to the slew rate being too fast. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> --- .../boot/dts/freescale/imx8mq-zii-ultra.dtsi | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi index e6469e15bcbd..aa05d5fd1b3b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi @@ -661,29 +661,29 @@ pinctrl_i2c1: i2c1grp { fsl,pins = < - MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL 0x4000007f - MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA 0x4000007f + MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL 0x40000022 + MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA 0x400000a2 >; }; pinctrl_i2c2: i2c2grp { fsl,pins = < - MX8MQ_IOMUXC_I2C2_SCL_I2C2_SCL 0x4000007f - MX8MQ_IOMUXC_I2C2_SDA_I2C2_SDA 0x4000007f + MX8MQ_IOMUXC_I2C2_SCL_I2C2_SCL 0x40000022 + MX8MQ_IOMUXC_I2C2_SDA_I2C2_SDA 0x400000a2 >; }; pinctrl_i2c3: i2c3grp { fsl,pins = < - MX8MQ_IOMUXC_I2C3_SCL_I2C3_SCL 0x4000007f - MX8MQ_IOMUXC_I2C3_SDA_I2C3_SDA 0x4000007f + MX8MQ_IOMUXC_I2C3_SCL_I2C3_SCL 0x40000022 + MX8MQ_IOMUXC_I2C3_SDA_I2C3_SDA 0x400000a2 >; }; pinctrl_i2c4: i2c4grp { fsl,pins = < - MX8MQ_IOMUXC_I2C4_SCL_I2C4_SCL 0x4000007f - MX8MQ_IOMUXC_I2C4_SDA_I2C4_SDA 0x4000007f + MX8MQ_IOMUXC_I2C4_SCL_I2C4_SCL 0x40000022 + MX8MQ_IOMUXC_I2C4_SDA_I2C4_SDA 0x400000a2 >; }; -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-25 18:50 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-25 18:47 [PATCH 01/10] ARM: dts: imx6: rdu2: enable WDOG1 Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-25 18:47 ` [PATCH 02/10] ARM: dts: imx6: RDU2: reduce i2c drive-strength Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-25 18:47 ` [PATCH 03/10] ARM: dts: imx6: RDU2: enable RMI4 reduced reporting Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-25 18:47 ` [PATCH 04/10] ARM: dts: imx6: RDU2: only trigger IRQ on falling edge ucs1002 ALERT pin Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-25 18:47 ` [PATCH 05/10] ARM: dts: imx6: RDU2: adjust audio devices nomenclature Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-25 18:47 ` [PATCH 06/10] arm64: dts: zii-ultra: add sound support Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-25 18:47 ` Lucas Stach [this message] 2021-01-25 18:47 ` [PATCH 07/10] arm64: dts: zii-ultra: fix i2c pin configuration Lucas Stach 2021-01-25 18:47 ` [PATCH 08/10] arm64: dts: zii-ultra: limit USB ports to USB2 speed Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-25 18:47 ` [PATCH 09/10] arm64: dts: zii-ultra: only trigger IRQ on falling edge ucs1002 ALERT pin Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-25 18:47 ` [PATCH 10/10] arm64: dts: zii-rmb3: enable RMI4 reduced reporting Lucas Stach 2021-01-25 18:47 ` Lucas Stach 2021-01-30 13:55 ` [PATCH 01/10] ARM: dts: imx6: rdu2: enable WDOG1 Shawn Guo 2021-01-30 13:55 ` Shawn Guo
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