Re: [PATCH v3 2/3] riscv: dts: sophgo: add Sophgo SG2042_EVB_V1.X board device tree

["Nutty Liu" <liujingqi@lanxincomputing.com>]

On 7/5/2025 3:39 PM, Han Gao wrote:
> Sophgo SG2042_EVB_V1.X [1] is a prototype development board based on SG2042
>
> Currently supports serial port, sdcard/emmc, pwm, fan speed control.
>
> Link: https://github.com/sophgo/sophgo-hardware/tree/master/SG2042/SG2042-x8-EVB [1]
>
> Signed-off-by: Han Gao <rabenda.cn@gmail.com>

Reviewed-by: Nutty Liu<liujingqi@lanxincomputing.com>

Thanks,
Nutty

> ---
>   arch/riscv/boot/dts/sophgo/Makefile          |   1 +
>   arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts | 245 +++++++++++++++++++
>   2 files changed, 246 insertions(+)
>   create mode 100644 arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
>
> diff --git a/arch/riscv/boot/dts/sophgo/Makefile b/arch/riscv/boot/dts/sophgo/Makefile
> index 85966306801e..6c9b29681cad 100644
> --- a/arch/riscv/boot/dts/sophgo/Makefile
> +++ b/arch/riscv/boot/dts/sophgo/Makefile
> @@ -3,4 +3,5 @@ dtb-$(CONFIG_ARCH_SOPHGO) += cv1800b-milkv-duo.dtb
>   dtb-$(CONFIG_ARCH_SOPHGO) += cv1812h-huashan-pi.dtb
>   dtb-$(CONFIG_ARCH_SOPHGO) += sg2002-licheerv-nano-b.dtb
>   dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-milkv-pioneer.dtb
> +dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-evb-v1.dtb
>   dtb-$(CONFIG_ARCH_SOPHGO) += sg2044-sophgo-srd3-10.dtb
> diff --git a/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts b/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
> new file mode 100644
> index 000000000000..3320bc1dd2c6
> --- /dev/null
> +++ b/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
> @@ -0,0 +1,245 @@
> +// SPDX-License-Identifier: GPL-2.0 OR MIT
> +/*
> + * Copyright (C) 2025 Sophgo Technology Inc. All rights reserved.
> + */
> +
> +#include "sg2042.dtsi"
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> +
> +/ {
> +	model = "Sophgo SG2042 EVB V1.X";
> +	compatible = "sophgo,sg2042-evb-v1", "sophgo,sg2042";
> +
> +	chosen {
> +		stdout-path = "serial0";
> +	};
> +
> +	gpio-power {
> +		compatible = "gpio-keys";
> +
> +		key-power {
> +			label = "Power Key";
> +			linux,code = <KEY_POWER>;
> +			gpios = <&port0a 22 GPIO_ACTIVE_HIGH>;
> +			linux,input-type = <EV_KEY>;
> +			debounce-interval = <100>;
> +		};
> +	};
> +
> +	pwmfan: pwm-fan {
> +		compatible = "pwm-fan";
> +		cooling-levels = <103 128 179 230 255>;
> +		pwms = <&pwm 0 40000 0>;
> +		#cooling-cells = <2>;
> +	};
> +
> +	thermal-zones {
> +		soc-thermal {
> +			polling-delay-passive = <1000>;
> +			polling-delay = <1000>;
> +			thermal-sensors = <&mcu 0>;
> +
> +			trips {
> +				soc_active1: soc-active1 {
> +					temperature = <30000>;
> +					hysteresis = <8000>;
> +					type = "active";
> +				};
> +
> +				soc_active2: soc-active2 {
> +					temperature = <58000>;
> +					hysteresis = <12000>;
> +					type = "active";
> +				};
> +
> +				soc_active3: soc-active3 {
> +					temperature = <70000>;
> +					hysteresis = <10000>;
> +					type = "active";
> +				};
> +
> +				soc_hot: soc-hot {
> +					temperature = <80000>;
> +					hysteresis = <5000>;
> +					type = "hot";
> +				};
> +			};
> +
> +			cooling-maps {
> +				map0 {
> +					trip = <&soc_active1>;
> +					cooling-device = <&pwmfan 0 1>;
> +				};
> +
> +				map1 {
> +					trip = <&soc_active2>;
> +					cooling-device = <&pwmfan 1 2>;
> +				};
> +
> +				map2 {
> +					trip = <&soc_active3>;
> +					cooling-device = <&pwmfan 2 3>;
> +				};
> +
> +				map3 {
> +					trip = <&soc_hot>;
> +					cooling-device = <&pwmfan 3 4>;
> +				};
> +			};
> +		};
> +
> +		board-thermal {
> +			polling-delay-passive = <1000>;
> +			polling-delay = <1000>;
> +			thermal-sensors = <&mcu 1>;
> +
> +			trips {
> +				board_active: board-active {
> +					temperature = <75000>;
> +					hysteresis = <8000>;
> +					type = "active";
> +				};
> +			};
> +
> +			cooling-maps {
> +				map4 {
> +					trip = <&board_active>;
> +					cooling-device = <&pwmfan 3 4>;
> +				};
> +			};
> +		};
> +	};
> +};
> +
> +&cgi_main {
> +	clock-frequency = <25000000>;
> +};
> +
> +&cgi_dpll0 {
> +	clock-frequency = <25000000>;
> +};
> +
> +&cgi_dpll1 {
> +	clock-frequency = <25000000>;
> +};
> +
> +&emmc {
> +	pinctrl-0 = <&emmc_cfg>;
> +	pinctrl-names = "default";
> +	bus-width = <4>;
> +	no-sdio;
> +	no-sd;
> +	non-removable;
> +	wp-inverted;
> +	status = "okay";
> +};
> +
> +&i2c1 {
> +	pinctrl-0 = <&i2c1_cfg>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +
> +	mcu: syscon@17 {
> +		compatible = "sophgo,sg2042-hwmon-mcu";
> +		reg = <0x17>;
> +		#thermal-sensor-cells = <1>;
> +	};
> +};
> +
> +&gmac0 {
> +	phy-handle = <&phy0>;
> +	phy-mode = "rgmii-id";
> +	status = "okay";
> +
> +	mdio {
> +		phy0: phy@0 {
> +			compatible = "ethernet-phy-ieee802.3-c22";
> +			reg = <0>;
> +			reset-gpios = <&port0a 27 GPIO_ACTIVE_LOW>;
> +			reset-assert-us = <100000>;
> +			reset-deassert-us = <100000>;
> +		};
> +	};
> +};
> +
> +&pinctrl {
> +	emmc_cfg: sdhci-emmc-cfg {
> +		sdhci-emmc-wp-pins {
> +			pinmux = <PINMUX(PIN_EMMC_WP, 0)>;
> +			bias-disable;
> +			drive-strength-microamp = <26800>;
> +			input-schmitt-disable;
> +		};
> +
> +		sdhci-emmc-cd-pins {
> +			pinmux = <PINMUX(PIN_EMMC_CD, 0)>;
> +			bias-pull-up;
> +			drive-strength-microamp = <26800>;
> +			input-schmitt-enable;
> +		};
> +
> +		sdhci-emmc-rst-pwr-pins {
> +			pinmux = <PINMUX(PIN_EMMC_RST, 0)>,
> +				 <PINMUX(PIN_EMMC_PWR_EN, 0)>;
> +			bias-disable;
> +			drive-strength-microamp = <26800>;
> +			input-schmitt-disable;
> +		};
> +	};
> +
> +	i2c1_cfg: i2c1-cfg {
> +		i2c1-pins {
> +			pinmux = <PINMUX(PIN_IIC1_SDA, 0)>,
> +				 <PINMUX(PIN_IIC1_SCL, 0)>;
> +			bias-pull-up;
> +			drive-strength-microamp = <26800>;
> +			input-schmitt-enable;
> +		};
> +	};
> +
> +	sd_cfg: sdhci-sd-cfg {
> +		sdhci-sd-cd-wp-pins {
> +			pinmux = <PINMUX(PIN_SDIO_CD, 0)>,
> +				 <PINMUX(PIN_SDIO_WP, 0)>;
> +			bias-pull-up;
> +			drive-strength-microamp = <26800>;
> +			input-schmitt-enable;
> +		};
> +
> +		sdhci-sd-rst-pwr-pins {
> +			pinmux = <PINMUX(PIN_SDIO_RST, 0)>,
> +				 <PINMUX(PIN_SDIO_PWR_EN, 0)>;
> +			bias-disable;
> +			drive-strength-microamp = <26800>;
> +			input-schmitt-disable;
> +		};
> +	};
> +
> +	uart0_cfg: uart0-cfg {
> +		uart0-rx-pins {
> +			pinmux = <PINMUX(PIN_UART0_TX, 0)>,
> +				 <PINMUX(PIN_UART0_RX, 0)>;
> +			bias-pull-up;
> +			drive-strength-microamp = <26800>;
> +			input-schmitt-enable;
> +		};
> +	};
> +};
> +
> +&sd {
> +	pinctrl-0 = <&sd_cfg>;
> +	pinctrl-names = "default";
> +	bus-width = <4>;
> +	no-sdio;
> +	no-mmc;
> +	wp-inverted;
> +	status = "okay";
> +};
> +
> +&uart0 {
> +	pinctrl-0 = <&uart0_cfg>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};