[PATCH 2/2] ARM: dts: stm32: Add DHSOM based DRC02 board

[Patrice CHOTARD]

Hi Marek

On 7/25/20 4:50 PM, Marek Vasut wrote:
> Add DT for DH DRC02 unit, which is a universal controller device.
> The system has two ethernet ports, two CANs, RS485 and RS232, USB,
> capacitive buttons and an OLED display.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Patrice Chotard <patrice.chotard at st.com>
> Cc: Patrick Delaunay <patrick.delaunay at st.com>
> ---
>  arch/arm/dts/Makefile                         |   1 +
>  .../dts/stm32mp15xx-dhcom-drc02-u-boot.dtsi   |   6 +
>  arch/arm/dts/stm32mp15xx-dhcom-drc02.dts      | 158 ++++++++++++++++++
>  3 files changed, 165 insertions(+)
>  create mode 100644 arch/arm/dts/stm32mp15xx-dhcom-drc02-u-boot.dtsi
>  create mode 100644 arch/arm/dts/stm32mp15xx-dhcom-drc02.dts
>
> diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
> index 5726156a2d..58f3cd4207 100644
> --- a/arch/arm/dts/Makefile
> +++ b/arch/arm/dts/Makefile
> @@ -936,6 +936,7 @@ dtb-$(CONFIG_STM32MP15x) += \
>  	stm32mp157c-dk2.dtb \
>  	stm32mp157c-ed1.dtb \
>  	stm32mp157c-ev1.dtb \
> +	stm32mp15xx-dhcom-drc02.dtb \
>  	stm32mp15xx-dhcom-pdk2.dtb \
>  	stm32mp15xx-dhcor-avenger96.dtb
>  
> diff --git a/arch/arm/dts/stm32mp15xx-dhcom-drc02-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcom-drc02-u-boot.dtsi
> new file mode 100644
> index 0000000000..f83cfe90b8
> --- /dev/null
> +++ b/arch/arm/dts/stm32mp15xx-dhcom-drc02-u-boot.dtsi
> @@ -0,0 +1,6 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
> +/*
> + * Copyright (C) 2020 Marek Vasut <marex at denx.de>
> + */
> +
> +#include "stm32mp15xx-dhcom-u-boot.dtsi"
> diff --git a/arch/arm/dts/stm32mp15xx-dhcom-drc02.dts b/arch/arm/dts/stm32mp15xx-dhcom-drc02.dts
> new file mode 100644
> index 0000000000..5a237a3b7b
> --- /dev/null
> +++ b/arch/arm/dts/stm32mp15xx-dhcom-drc02.dts
> @@ -0,0 +1,158 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
> +/*
> + * Copyright (C) 2020 Marek Vasut <marex at denx.de>
> + */
> +
> +#include "stm32mp15xx-dhcom.dtsi"
> +
> +/ {
> +	model = "DH Electronics STM32MP15xx DHCOM DRC02";
> +	compatible = "dh,stm32mp15xx-dhcom-drc02", "st,stm32mp1xx";
> +
> +	aliases {
> +		serial0 = &uart4;
> +		serial1 = &usart3;
> +		serial2 = &uart8;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +};
> +
> +&adc {
> +	status = "disabled";
> +};
> +
> +&dac {
> +	status = "disabled";
> +};
> +
> +&gpiob {
> +	/*
> +	 * NOTE: On DRC02, the RS485_RX_En is controlled by a separate
> +	 * GPIO line, however the STM32 UART driver assumes RX happens
> +	 * during TX anyway and that it only controls drive enable DE
> +	 * line. Hence, the RX is always enabled here.
> +	 */
> +	usb-hub {
> +		gpio-hog;
> +		gpios = <8 GPIO_ACTIVE_HIGH>;
> +		output-high;
> +		line-name = "rs485-rx-en";
> +	};
> +};
> +
> +&gpiod {
> +	gpio-line-names = "", "", "", "",
> +			  "", "", "", "",
> +			  "", "", "", "Out1",
> +			  "Out2", "", "", "";
> +};
> +
> +&gpioi {
> +	gpio-line-names = "In1", "", "", "",
> +			  "", "", "", "",
> +			  "In2", "", "", "",
> +			  "", "", "", "";
> +
> +	/*
> +	 * NOTE: The USB Hub on the DRC02 needs a reset signal to be
> +	 * pulled high in order to be detected by the USB Controller.
> +	 * This signal should be handled by USB power sequencing in
> +	 * order to reset the Hub when USB bus is powered down, but
> +	 * so far there is no such functionality.
> +	 */
> +	usb-hub {
> +		gpio-hog;
> +		gpios = <2 GPIO_ACTIVE_HIGH>;
> +		output-high;
> +		line-name = "usb-hub-reset";
> +	};
> +};
> +
> +&i2c2 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c2_pins_a>;
> +	i2c-scl-rising-time-ns = <185>;
> +	i2c-scl-falling-time-ns = <20>;
> +	status = "okay";
> +	/* spare dmas for other usage */
> +	/delete-property/dmas;
> +	/delete-property/dma-names;
> +	status = "okay";
> +
> +	eeprom at 50 {
> +		compatible = "atmel,24c04";
> +		reg = <0x50>;
> +		pagesize = <16>;
> +	};
> +};
> +
> +&i2c5 {	/* TP7/TP8 */
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c5_pins_a>;
> +	i2c-scl-rising-time-ns = <185>;
> +	i2c-scl-falling-time-ns = <20>;
> +	status = "okay";
> +	/* spare dmas for other usage */
> +	/delete-property/dmas;
> +	/delete-property/dma-names;
> +};
> +
> +&sdmmc3 {
> +	/*
> +	 * On DRC02, the SoM does not have SDIO WiFi. The pins
> +	 * are used for on-board microSD slot instead.
> +	 */
> +	/delete-property/broken-cd;
> +	cd-gpios = <&gpioi 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
> +	disable-wp;
> +};
> +
> +&spi1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&spi1_pins_a>;
> +	cs-gpios = <&gpioz 3 0>;
> +	/* Use PIO for the display */
> +	/delete-property/dmas;
> +	/delete-property/dma-names;
> +	status = "disabled";	/* Enable once there is display driver */
> +	/*
> +	 * Note: PF3/GPIO_A , PD6/GPIO_B , PG0/GPIO_C , PC6/GPIO_E are
> +	 * also connected to the display board connector.
> +	 */
> +};
> +
> +&usart3 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&usart3_pins_a>;
> +	status = "okay";
> +};
> +
> +/*
> + * Note: PI3 is UART1_RTS and PI5 is UART1_CTS on DRC02 (uart4 of STM32MP1),
> + *       however the STM32MP1 pinmux cannot map them to UART4 .
> + */
> +
> +&uart8 {	/* RS485 */
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&uart8_pins_a>;
> +	rts-gpios = <&gpioe 6 GPIO_ACTIVE_HIGH>;
> +	status = "okay";
> +};
> +
> +&usbh_ehci {
> +	phys = <&usbphyc_port0>;
> +	status = "okay";
> +};
> +
> +&usbphyc {
> +	status = "okay";
> +};
> +
> +&usbphyc_port0 {
> +	phy-supply = <&vdd_usb>;
> +	vdda1v1-supply = <&reg11>;
> +	vdda1v8-supply = <&reg18>;
> +};

Reviewed-by: Patrice Chotard <patrice.chotard at st.com>

Thanks

Patrice