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Feb 2026 14:31:48 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 1/2] arm64: dts: imx8mp: Make MX8MP_I2C_DEFAULT independent on drive strength To: Daniel Baluta , Frank.Li@nxp.com Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260227130242.1702329-1-daniel.baluta@nxp.com> <20260227130242.1702329-2-daniel.baluta@nxp.com> Content-Language: en-US From: Maud Spierings In-Reply-To: <20260227130242.1702329-2-daniel.baluta@nxp.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: AM0PR10CA0058.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:20b:150::38) To AMBPR04MB11741.eurprd04.prod.outlook.com (2603:10a6:20b:6f3::7) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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Daniel Baluta wrote: > Currently MX8MP_I2C_DEFAULT macro includes a fixed drive > strength (MX8MP_DSE_X6) thus limiting its use to only I2C > pins that require X6 drive. > > There are many pinctrl configurations for I2C that use different > drive strength while still using the common I2C default configurations > (pull-up, Schmitt input, pull enable, SION). > > So make the MX8MP_I2C_DEFAULT macro more flexible and reusable by removing > DSE_X6 drive strength from it's definition but add it in all places > it is necessary. > > Signed-off-by: Daniel Baluta > --- > arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h | 2 +- > .../imx8mp-tx8p-ml81-moduline-display-106.dts | 16 ++++++++-------- > .../boot/dts/freescale/imx8mp-tx8p-ml81.dtsi | 8 ++++---- > 3 files changed, 13 insertions(+), 13 deletions(-) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h b/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h > index 16f5899de4152..26e7a9428c4c7 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h > +++ b/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h > @@ -36,7 +36,7 @@ > /* long defaults */ > #define MX8MP_USDHC_DATA_DEFAULT (MX8MP_FSEL_FAST | MX8MP_PULL_UP | \ > MX8MP_HYS_SCHMITT | MX8MP_PULL_ENABLE) > -#define MX8MP_I2C_DEFAULT (MX8MP_DSE_X6 | MX8MP_PULL_UP | MX8MP_HYS_SCHMITT | \ > +#define MX8MP_I2C_DEFAULT (MX8MP_PULL_UP | MX8MP_HYS_SCHMITT | \ > MX8MP_PULL_ENABLE | MX8MP_SION) > > /* > diff --git a/arch/arm64/boot/dts/freescale/imx8mp-tx8p-ml81-moduline-display-106.dts b/arch/arm64/boot/dts/freescale/imx8mp-tx8p-ml81-moduline-display-106.dts > index 399230144ce39..87b20b8564583 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mp-tx8p-ml81-moduline-display-106.dts > +++ b/arch/arm64/boot/dts/freescale/imx8mp-tx8p-ml81-moduline-display-106.dts > @@ -302,36 +302,36 @@ MX8MP_IOMUXC_ECSPI1_SS0__GPIO5_IO09 > pinctrl_i2c2: i2c2grp { > fsl,pins = < > MX8MP_IOMUXC_I2C2_SCL__I2C2_SCL > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > MX8MP_IOMUXC_I2C2_SDA__I2C2_SDA > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > >; > }; > > pinctrl_i2c2_gpio: i2c2-gpiogrp { > fsl,pins = < > MX8MP_IOMUXC_I2C2_SCL__GPIO5_IO16 > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > MX8MP_IOMUXC_I2C2_SDA__GPIO5_IO17 > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > >; > }; > > pinctrl_i2c4: i2c4grp { > fsl,pins = < > MX8MP_IOMUXC_ECSPI2_MISO__I2C4_SCL > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > MX8MP_IOMUXC_ECSPI2_SS0__I2C4_SDA > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > >; > }; > > pinctrl_i2c4_gpio: i2c4-gpiogrp { > fsl,pins = < > MX8MP_IOMUXC_ECSPI2_MISO__GPIO5_IO12 > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > MX8MP_IOMUXC_ECSPI2_SS0__GPIO5_IO13 > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > >; > }; > > diff --git a/arch/arm64/boot/dts/freescale/imx8mp-tx8p-ml81.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-tx8p-ml81.dtsi > index 761ee046eb72e..bf49ae942d411 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mp-tx8p-ml81.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mp-tx8p-ml81.dtsi > @@ -425,18 +425,18 @@ MX8MP_IOMUXC_SAI2_RXC__GPIO4_IO22 > pinctrl_i2c1: i2c1grp { > fsl,pins = < > MX8MP_IOMUXC_I2C1_SCL__I2C1_SCL > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > MX8MP_IOMUXC_I2C1_SDA__I2C1_SDA > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > >; > }; > > pinctrl_i2c1_gpio: i2c1-gpiogrp { > fsl,pins = < > MX8MP_IOMUXC_I2C1_SCL__GPIO5_IO14 > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > MX8MP_IOMUXC_I2C1_SDA__GPIO5_IO15 > - MX8MP_I2C_DEFAULT > + (MX8MP_DSE_X6 | MX8MP_I2C_DEFAULT) > >; > }; >