Re: [PATCH 2/2] arm64: dts: rockchip: Add rk3399-evb-ind board

[Quentin Schulz <quentin.schulz@cherry.de>]

Hi Chaoyi,

On 4/27/25 11:42 AM, Chaoyi Chen wrote:
> From: Chaoyi Chen <chaoyi.chen@rock-chips.com>
> 
> General feature for rk3399 industry evaluation board:
> - Rockchip RK3399
> - 4GB LPDDR4
> - emmc5.1
> - SDIO3.0 compatible TF card
> - 1x HDMI2.0a TX
> - 1x HDMI1.4b RX with TC358749XBG HDMI to MIPI CSI2 bridge chip
> - 1x type-c DisplayPort
> - 3x USB3.0 Host
> - 1x USB2.0 Host
> - 1x Ethernet / USB3.0 to Ethernet
> 

Are there publicly available schematics by any chance?

> Tested with HDMI/GPU/USB2.0/USB3.0/Ethernet/TF card/emmc.
> 
> Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
> ---
>   arch/arm64/boot/dts/rockchip/Makefile         |   1 +
>   .../boot/dts/rockchip/rk3399-evb-ind.dts      | 222 ++++++++++++++++++
>   2 files changed, 223 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-evb-ind.dts
> 
> diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
> index 3e8771ef69ba..8a3adb7482ca 100644
> --- a/arch/arm64/boot/dts/rockchip/Makefile
> +++ b/arch/arm64/boot/dts/rockchip/Makefile
> @@ -40,6 +40,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3368-px5-evb.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3368-r88.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-eaidk-610.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-evb.dtb
> +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-evb-ind.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-ficus.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-firefly.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-bob.dtb
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-evb-ind.dts b/arch/arm64/boot/dts/rockchip/rk3399-evb-ind.dts
> new file mode 100644
> index 000000000000..a995d4ff202d
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/rk3399-evb-ind.dts
> @@ -0,0 +1,222 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright (c) 2025 Rockchip Electronics Co., Ltd.
> + */
> +
> +/dts-v1/;
> +#include "rk3399-base.dtsi"
> +
> +/ {
> +	model = "Rockchip RK3399 EVB IND LPDDR4 Board";
> +	compatible = "rockchip,rk3399-evb-ind", "rockchip,rk3399";
> +
> +	aliases {
> +		ethernet0 = &gmac;
> +		mmc0 = &sdhci;
> +		mmc1 = &sdmmc;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial2:1500000n8";
> +	};
> +
> +	clkin_gmac: external-gmac-clock {
> +		compatible = "fixed-clock";
> +		clock-frequency = <125000000>;
> +		clock-output-names = "clkin_gmac";
> +		#clock-cells = <0>;
> +	};
> +
> +	vcc5v0_sys: regulator-vcc5v0-sys {
> +		compatible = "regulator-fixed";
> +		enable-active-high;
> +		gpio = <&gpio4 RK_PD2 GPIO_ACTIVE_HIGH>;
> +		regulator-name = "vcc5v0_sys";
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-max-microvolt = <5000000>;
> +		regulator-min-microvolt = <5000000>;
> +	};
> +
> +	vcc_phy: regulator-vcc-phy {
> +		compatible = "regulator-fixed";
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-name = "vcc_phy";
> +	};
> +};
> +
> +&emmc_phy {
> +	status = "okay";
> +};
> +
> +&gmac {
> +	assigned-clocks = <&cru SCLK_RMII_SRC>;
> +	assigned-clock-parents = <&clkin_gmac>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&rgmii_pins>;
> +	clock_in_out = "input";
> +	phy-supply = <&vcc_phy>;
> +	phy-mode = "rgmii";
> +	snps,reset-gpio = <&gpio3 RK_PB7 GPIO_ACTIVE_LOW>;
> +	snps,reset-active-low;
> +	snps,reset-delays-us = <0 10000 150000>;
> +	tx_delay = <0x22>;
> +	rx_delay = <0x23>;
> +	status = "okay";
> +};
> +
> +&gpu {
> +	mali-supply = <&vdd_gpu>;
> +	status = "okay";
> +};
> +
> +&hdmi {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&hdmi_i2c_xfer>, <&hdmi_cec>;
> +	status = "okay";
> +};
> +
> +&hdmi_in_vopl {
> +	status = "disabled";
> +};
> +

Why disabled?

> +&hdmi_sound {
> +	status = "okay";
> +};
> +
> +&i2c0 {
> +	clock-frequency = <400000>;
> +	i2c-scl-falling-time-ns = <4>;
> +	i2c-scl-rising-time-ns = <168>;
> +	status = "okay";
> +
> +	vdd_gpu: tcs4526@10 {
> +		compatible = "tcs,tcs4525";
> +		reg = <0x10>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&vsel2_gpio>;
> +		fcs,suspend-voltage-selector = <1>;
> +		vin-supply = <&vcc5v0_sys>;
> +		vsel-gpios = <&gpio1 RK_PB6 GPIO_ACTIVE_HIGH>;
> +		regulator-compatible = "fan53555-reg";
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-initial-state = <3>;
> +		regulator-max-microvolt = <1500000>;
> +		regulator-min-microvolt = <712500>;
> +		regulator-name = "vdd_gpu";
> +		regulator-ramp-delay = <1000>;
> +		regulator-state-mem {
> +			regulator-off-in-suspend;
> +		};

No RK80x PMIC on this board?

> +	};
> +};
> +

Missing io_domains here no? I guess it'll rely on the addition of the 
RK80x PMIC for this to work?

> +&sdmmc {
> +	bus-width = <4>;
> +	cap-mmc-highspeed;
> +	cap-sd-highspeed;
> +	cd-gpios = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;
> +	disable-wp;
> +	max-frequency = <150000000>;

It's already defaulting to that frequency in rk3399-base.dtsi so no need 
to duplicate the info here.

> +	pinctrl-names = "default";
> +	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_bus4>;
> +	status = "okay";
> +};
> +
> +&sdhci {
> +	bus-width = <8>;
> +	keep-power-in-suspend;
> +	mmc-hs400-1_8v;
> +	mmc-hs400-enhanced-strobe;
> +	no-sdio;
> +	no-sd;
> +	non-removable;
> +	status = "okay";
> +};
> +
> +&tcphy0 {
> +	status = "okay";
> +};
> +
> +&tcphy1 {
> +	status = "okay";
> +};
> +
> +&u2phy0 {
> +	status = "okay";
> +};
> +
> +&u2phy0_host {
> +	status = "okay";
> +};
> +
> +&u2phy0_otg {
> +	status = "okay";
> +};
> +
> +&u2phy1 {
> +	status = "okay";
> +};
> +
> +&u2phy1_host {
> +	status = "okay";
> +};
> +
> +&u2phy1_otg {
> +	status = "okay";
> +};
> +
> +&uart2 {
> +	status = "okay";
> +};
> +
> +&usbdrd_dwc3_0 {
> +	status = "okay";
> +};
> +
> +&usbdrd3_0 {
> +	status = "okay";
> +};
> +
> +&usbdrd3_1 {
> +	status = "okay";
> +};
> +
> +&usbdrd_dwc3_1 {
> +	dr_mode = "host";
> +	status = "okay";
> +};
> +
> +&usb_host0_ehci {
> +	status = "okay";
> +};
> +
> +&usb_host0_ohci {
> +	status = "okay";
> +};
> +
> +&usb_host1_ehci {
> +	status = "okay";
> +};
> +
> +&usb_host1_ohci {
> +	status = "okay";
> +};
> +
> +&pinctrl {
> +	pmic {
> +		vsel2_gpio: vsel2-gpio {
> +			rockchip,pins = <1 RK_PB6 RK_FUNC_GPIO &pcfg_pull_down>;
> +		};
> +	};
> +};
> +
> +&vopb {
> +	status = "okay";
> +};
> +
> +&vopb_mmu {
> +	status = "okay";
> +};

Why no vopl?

Cheers,
Quentin