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Date: Mon, 4 Oct 2021 08:48:22 +0200 From: Yunus Bas <y.bas@...tec.de> To: robh+dt@...nel.org, shawnguo@...nel.org, festevam@...il.com, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org Cc: s.hauer@...gutronix.de, kernel@...gutronix.de, linux-arm-kernel@...ts.infradead.org Subject: [PATCH] ARM: dts: imx6: phytec: Add gpio pinctrl for i2c bus recovery Make use of the i2c bus recovery feature and enable it on PHYTEC phyCORE-based modules and boards. Signed-off-by: Yunus Bas <y.bas@...tec.de> --- arch/arm/boot/dts/imx6qdl-phytec-mira.dtsi | 30 +++++++++++++++---- .../boot/dts/imx6qdl-phytec-phycore-som.dtsi | 12 +++++++- .../boot/dts/imx6ul-phytec-phycore-som.dtsi | 12 +++++++- 3 files changed, 47 insertions(+), 7 deletions(-) diff --git a/arch/arm/boot/dts/imx6qdl-phytec-mira.dtsi b/arch/arm/boot/dts/imx6qdl-phytec-mira.dtsi index 0873f53ea275..120d6e997a4c 100644 --- a/arch/arm/boot/dts/imx6qdl-phytec-mira.dtsi +++ b/arch/arm/boot/dts/imx6qdl-phytec-mira.dtsi @@ -145,8 +145,11 @@ &hdmi { }; &i2c1 { - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1>; + pinctrl-1 = <&pinctrl_i2c1_gpio>; + scl-gpios = <&gpio3 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio3 28 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; clock-frequency = <400000>; status = "disabled"; @@ -185,8 +188,11 @@ i2c_rtc: rtc@68 { }; &i2c2 { - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c2>; + pinctrl-1 = <&pinctrl_i2c2_gpio>; + scl-gpios = <&gpio4 12 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio4 13 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; clock-frequency = <100000>; status = "disabled"; }; @@ -300,6 +306,20 @@ MX6QDL_PAD_KEY_ROW2__HDMI_TX_CEC_LINE 0x1f8b0 >; }; + pinctrl_i2c1: i2c1grp { + fsl,pins = < + MX6QDL_PAD_EIM_D21__I2C1_SCL 0x4001b8b1 + MX6QDL_PAD_EIM_D28__I2C1_SDA 0x4001b8b1 + >; + }; + + pinctrl_i2c1_gpio: i2c1gpiogrp { + fsl,pins = < + MX6QDL_PAD_EIM_D21__GPIO3_IO21 0x4001b8b1 + MX6QDL_PAD_EIM_D28__GPIO3_IO28 0x4001b8b1 + >; + }; + pinctrl_i2c2: i2c2grp { fsl,pins = < MX6QDL_PAD_KEY_ROW3__I2C2_SDA 0x4001b8b1 @@ -307,10 +327,10 @@ MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b8b1 >; }; - pinctrl_i2c1: i2c1grp { + pinctrl_i2c2_gpio: i2c2gpiogrp { fsl,pins = < - MX6QDL_PAD_EIM_D21__I2C1_SCL 0x4001b8b1 - MX6QDL_PAD_EIM_D28__I2C1_SDA 0x4001b8b1 + MX6QDL_PAD_KEY_ROW3__GPIO4_IO13 0x4001b8b1 + MX6QDL_PAD_KEY_COL3__GPIO4_IO12 0x4001b8b1 >; }; diff --git a/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi index a80aa08a37cb..94b254bfd054 100644 --- a/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi +++ b/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi @@ -78,8 +78,11 @@ &gpmi { }; &i2c3 { - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c3>; + pinctrl-1 = <&pinctrl_i2c3_gpio>; + scl-gpios = <&gpio1 5 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio1 6 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; clock-frequency = <400000>; status = "okay"; @@ -259,6 +262,13 @@ MX6QDL_PAD_GPIO_5__I2C3_SCL 0x4001b8b1 >; }; + pinctrl_i2c3_gpio: i2c3gpiogrp { + fsl,pins = < + MX6QDL_PAD_GPIO_6__GPIO1_IO06 0x4001b8b1 + MX6QDL_PAD_GPIO_5__GPIO1_IO05 0x4001b8b1 + >; + }; + pinctrl_ecspi1: ecspi1grp { fsl,pins = < MX6QDL_PAD_EIM_D16__ECSPI1_SCLK 0x100b1 diff --git a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi index 19a062635ff6..3cddc68917a0 100644 --- a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi +++ b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi @@ -68,8 +68,11 @@ &gpmi { }; &i2c1 { - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1>; + pinctrl-1 = <&pinctrl_i2c1_gpio>; + scl-gpios = <&gpio1 28 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio1 29 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; clock-frequency = <100000>; status = "okay"; @@ -147,6 +150,13 @@ MX6UL_PAD_UART4_RX_DATA__I2C1_SDA 0x4001b8b0 >; }; + pinctrl_i2c1_gpio: i2cgpiogrp { + fsl,pins = < + MX6UL_PAD_UART4_TX_DATA__GPIO1_IO28 0x4001b8b0 + MX6UL_PAD_UART4_RX_DATA__GPIO1_IO29 0x4001b8b0 + >; + }; + pinctrl_uart1: uart1grp { fsl,pins = < MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1 -- 2.33.0
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