On Fri, Nov 03, 2023 at 10:28:31AM -0400, Hugo Villeneuve wrote: > From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx> > > The RVE gateway board is based on a Variscite VAR-SOM-NANO, > with a NXP MX8MN nano CPU. > > Signed-off-by: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx> > --- > arch/arm64/boot/dts/freescale/Makefile | 1 + > .../boot/dts/freescale/imx8mn-rve-gateway.dts | 282 ++++++++++++++++++ > 2 files changed, 283 insertions(+) > create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-rve-gateway.dts > > diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile > index 300049037eb0..c99da779ef7b 100644 > --- a/arch/arm64/boot/dts/freescale/Makefile > +++ b/arch/arm64/boot/dts/freescale/Makefile > @@ -98,6 +98,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mn-bsh-smm-s2pro.dtb > dtb-$(CONFIG_ARCH_MXC) += imx8mn-evk.dtb > dtb-$(CONFIG_ARCH_MXC) += imx8mn-ddr3l-evk.dtb > dtb-$(CONFIG_ARCH_MXC) += imx8mn-ddr4-evk.dtb > +dtb-$(CONFIG_ARCH_MXC) += imx8mn-rve-gateway.dtb > dtb-$(CONFIG_ARCH_MXC) += imx8mn-tqma8mqnl-mba8mx.dtb > dtb-$(CONFIG_ARCH_MXC) += imx8mn-var-som-symphony.dtb > dtb-$(CONFIG_ARCH_MXC) += imx8mn-venice-gw7902.dtb > diff --git a/arch/arm64/boot/dts/freescale/imx8mn-rve-gateway.dts b/arch/arm64/boot/dts/freescale/imx8mn-rve-gateway.dts > new file mode 100644 > index 000000000000..186f54fd06c6 > --- /dev/null > +++ b/arch/arm64/boot/dts/freescale/imx8mn-rve-gateway.dts > @@ -0,0 +1,282 @@ > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) > +/* > + * Copyright 2023 DimOnOff > + */ > + > +/dts-v1/; > + > +#include <dt-bindings/usb/pd.h> > +#include "imx8mn-var-som.dtsi" > + > +/ { > + model = "RVE gateway"; > + compatible = "rve,rve-gateway", "variscite,var-som-mx8mn", "fsl,imx8mn"; > + > + crystal_duart_24m: crystal-duart-24m { > + compatible = "fixed-clock"; > + #clock-cells = <0>; > + clock-frequency = <24000000>; > + }; > + > + gpio-keys { > + compatible = "gpio-keys"; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_gpio_keys>; > + > + key-enter { > + label = "enter"; > + gpios = <&gpio1 1 GPIO_ACTIVE_LOW>; > + linux,code = <KEY_ENTER>; > + }; > + > + key-exit { > + label = "exit"; > + gpios = <&gpio3 23 GPIO_ACTIVE_LOW>; > + linux,code = <KEY_ESC>; > + }; > + }; > + > + lcd { > + compatible = "hit,hd44780"; > + display-height-chars = <2>; > + display-width-chars = <20>; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_lcd>; > + data-gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>, > + <&gpio1 6 GPIO_ACTIVE_HIGH>, > + <&gpio1 14 GPIO_ACTIVE_HIGH>, > + <&gpio4 28 GPIO_ACTIVE_HIGH>, > + <&gpio5 24 GPIO_ACTIVE_HIGH>, > + <&gpio5 2 GPIO_ACTIVE_HIGH>, > + <&gpio1 12 GPIO_ACTIVE_HIGH>, > + <&gpio5 25 GPIO_ACTIVE_HIGH>; > + enable-gpios = <&gpio5 23 GPIO_ACTIVE_HIGH>; > + rs-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>; > + rw-gpios = <&gpio4 27 GPIO_ACTIVE_HIGH>; > + }; > + > + reg_3p3v: regulator-3p3v { > + compatible = "regulator-fixed"; > + regulator-name = "3P3V"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + regulator-always-on; > + }; > + > + /* Bourns PEC12R rotary encoder, 24 steps. */ > + rotary: rotary-encoder { > + compatible = "rotary-encoder"; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_rotary>; > + gpios = <&gpio1 5 GPIO_ACTIVE_LOW>, /* A */ > + <&gpio3 21 GPIO_ACTIVE_LOW>; /* B */ > + linux,axis = <0>; /* REL_X */ > + rotary-encoder,encoding = "gray"; > + rotary-encoder,relative-axis; > + }; > +}; > + > +&ecspi1 { > + cs-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>; > + > + duart1: serial@0 { > + compatible = "nxp,sc16is752"; > + reg = <0>; > + spi-rx-bus-width = <1>; > + spi-tx-bus-width = <1>; > + spi-max-frequency = <4000000>; > + clocks = <&crystal_duart_24m>; > + interrupt-parent = <&gpio3>; > + interrupts = <22 IRQ_TYPE_EDGE_FALLING>; > + gpio-controller; > + #gpio-cells = <2>; > + gpio-line-names = "RADIO0", "RADIO1", "RADIO2", "RADIO3", > + "RADIO4", "RADIO_RESET", "TP12", "TP11"; Can we add some indent to get the line aligned with the first " above? There are a few such lines that could be improved. Shawn > + linux,rs485-enabled-at-boot-time; > + rs485-rts-active-low; > + }; > + > + /delete-node/ touchscreen@0; > +}; > + > +&ecspi2 { > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_ecspi2>; > + cs-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>; > + /delete-property/ dmas; > + /delete-property/ dma-names; > + status = "okay"; > + > + duart2: serial@0 { > + compatible = "nxp,sc16is752"; > + reg = <0>; > + spi-rx-bus-width = <1>; > + spi-tx-bus-width = <1>; > + spi-max-frequency = <4000000>; > + clocks = <&crystal_duart_24m>; > + interrupt-parent = <&gpio3>; > + interrupts = <20 IRQ_TYPE_EDGE_FALLING>; > + gpio-controller; > + #gpio-cells = <2>; > + gpio-line-names = "LED_B_USER", "LED_R_USER", "LED_G_USER", > + "GPIO_EXT3", "GPIO_EXT2", "GPIO_EXT1", "GPIO_EXT0", "TP13"; > + linux,rs485-enabled-at-boot-time; > + rs485-rts-active-low; > + }; > +}; > + > +/* Configure PWM pins in GPIO mode: */ > +&gpio5 { > + gpio-line-names = "", "", "", "PWM3", "PWM2", "PWM1"; > +}; > + > +&gpu { > + status = "disabled"; > +}; > + > +&i2c2 { > + clock-frequency = <400000>; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_i2c2>; > + status = "okay"; > + > + /* Carrier board EEPROM */ > + eeprom_cb: eeprom@56 { > + compatible = "atmel,24c04"; > + reg = <0x56>; > + pagesize = <16>; > + vcc-supply = <®_3p3v>; > + }; > + > + lm75: sensor@48 { > + compatible = "st,stlm75"; > + reg = <0x48>; > + vs-supply = <®_3p3v>; > + }; > + > + mcp7940: rtc@6f { > + compatible = "microchip,mcp7940x"; > + reg = <0x6f>; > + }; > +}; > + > +&i2c3 { > + codec@1a { > + status = "disabled"; > + }; > +}; > + > +&i2c4 { > + clock-frequency = <400000>; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_i2c4>; > + status = "okay"; > + > + pcf8574_1: gpio@38 { > + compatible = "nxp,pcf8574"; > + reg = <0x38>; > + gpio-controller; > + #gpio-cells = <2>; > + gpio-line-names = "LED_B_COMM3", "LED_R_COMM3", "LED_G_COMM3", > + "TP14", "TP15", "LED_G_COMM4", "LED_R_COMM4", "LED_B_COMM4"; > + }; > + > + pcf8574_2: gpio@39 { > + compatible = "nxp,pcf8574"; > + reg = <0x39>; > + gpio-controller; > + #gpio-cells = <2>; > + gpio-line-names = "LED_B_COMM2", "LED_G_COMM2", "LED_B_COMM1", > + "LED_R_COMM2", "LED_R_COMM1", "LED_G_COMM1", "TP16", "TP17"; > + }; > +}; > + > +/* Bluetooth */ > +&uart2 { > + status = "disabled"; > +}; > + > +&usbotg1 { > + dr_mode = "host"; > + disable-over-current; > + status = "okay"; > +}; > + > +/* SD interface on expansion connector. */ > +&usdhc2 { > + vmmc-supply = <®_3p3v>; > + cd-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>; > +}; > + > +&iomuxc { > + pinctrl_ecspi1: ecspi1grp { > + fsl,pins = < > + MX8MN_IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK 0x13 > + MX8MN_IOMUXC_ECSPI1_MOSI_ECSPI1_MOSI 0x13 > + MX8MN_IOMUXC_ECSPI1_MISO_ECSPI1_MISO 0x13 > + MX8MN_IOMUXC_ECSPI1_SS0_GPIO5_IO9 0x13 /* SS0 */ > + MX8MN_IOMUXC_SAI5_RXD1_GPIO3_IO22 0x13 /* SC16 IRQ */ > + >; > + }; > + > + pinctrl_ecspi2: ecspi2grp { > + fsl,pins = < > + MX8MN_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK 0x13 > + MX8MN_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI 0x13 > + MX8MN_IOMUXC_ECSPI2_MISO_ECSPI2_MISO 0x13 > + MX8MN_IOMUXC_ECSPI2_SS0_GPIO5_IO13 0x13 /* SS0 */ > + MX8MN_IOMUXC_SAI5_RXC_GPIO3_IO20 0x13 /* SC16 IRQ */ > + >; > + }; > + > + pinctrl_gpio_keys: gpiokeysgrp { > + fsl,pins = < > + MX8MN_IOMUXC_GPIO1_IO01_GPIO1_IO1 0xc6 /* Enter */ > + MX8MN_IOMUXC_SAI5_RXD2_GPIO3_IO23 0xc6 /* Exit */ > + >; > + }; > + > + pinctrl_i2c2: i2c2grp { > + fsl,pins = < > + MX8MN_IOMUXC_I2C2_SCL_I2C2_SCL 0x400001c3 > + MX8MN_IOMUXC_I2C2_SDA_I2C2_SDA 0x400001c3 > + >; > + }; > + > + pinctrl_i2c4: i2c4grp { > + fsl,pins = < > + MX8MN_IOMUXC_I2C4_SCL_I2C4_SCL 0x400001c3 > + MX8MN_IOMUXC_I2C4_SDA_I2C4_SDA 0x400001c3 > + >; > + }; > + > + pinctrl_lcd: lcdgrp { > + fsl,pins = < > + MX8MN_IOMUXC_SAI3_TXD_GPIO5_IO1 0x00000156 /* D0 */ > + MX8MN_IOMUXC_GPIO1_IO06_GPIO1_IO6 0x00000156 /* D1 */ > + MX8MN_IOMUXC_GPIO1_IO14_GPIO1_IO14 0x00000156 /* D2 */ > + MX8MN_IOMUXC_SAI3_RXFS_GPIO4_IO28 0x00000156 /* D3 */ > + MX8MN_IOMUXC_UART2_RXD_GPIO5_IO24 0x00000156 /* D4 */ > + MX8MN_IOMUXC_SAI3_MCLK_GPIO5_IO2 0x00000156 /* D5 */ > + MX8MN_IOMUXC_GPIO1_IO12_GPIO1_IO12 0x00000156 /* D6 */ > + MX8MN_IOMUXC_UART2_TXD_GPIO5_IO25 0x00000156 /* D7 */ > + MX8MN_IOMUXC_UART1_TXD_GPIO5_IO23 0x00000156 /* E */ > + MX8MN_IOMUXC_GPIO1_IO07_GPIO1_IO7 0x00000156 /* RS */ > + MX8MN_IOMUXC_SAI2_MCLK_GPIO4_IO27 0x00000156 /* R/W */ > + >; > + }; > + > + pinctrl_rotary: rotarygrp { > + fsl,pins = < > + MX8MN_IOMUXC_GPIO1_IO05_GPIO1_IO5 0x00000156 /* A */ > + MX8MN_IOMUXC_SAI5_RXD0_GPIO3_IO21 0x00000156 /* B */ > + >; > + }; > + > + /* Override Card Detect function GPIO value (GPIO1_IO10) from SOM: */ > + pinctrl_usdhc2_gpio: usdhc2gpiogrp { > + fsl,pins = < > + MX8MN_IOMUXC_GPIO1_IO13_GPIO1_IO13 0x41 > + >; > + }; > +}; > -- > 2.39.2 >