linux-kernel - Re: [PATCH 4/4] arm64: dts: rockchip: add Haikou baseboard with RK3588-Q7 SoM

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Date: Wed, 28 Feb 2024 12:39:45 +0100
From: Quentin Schulz <quentin.schulz@...obroma-systems.com>
To: Heiko Stuebner <heiko@...ech.de>, linux-rockchip@...ts.infradead.org
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
 Heiko Stuebner <heiko.stuebner@...rry.de>
Subject: Re: [PATCH 4/4] arm64: dts: rockchip: add Haikou baseboard with
 RK3588-Q7 SoM

Hi Heiko,

On 2/27/24 17:46, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@...rry.de>
> 
> Haikou is a Qseven and μQseven baseboard featuring PCIe, USB3 and a
> video connector for a MIPI-DSI/CSI adapter.
>  > This dts is for usage with the RK3588-Q7 SoM Tiger.
> 
> Signed-off-by: Heiko Stuebner <heiko.stuebner@...rry.de>
> ---
>   arch/arm64/boot/dts/rockchip/Makefile         |   1 +
>   .../boot/dts/rockchip/rk3588-tiger-haikou.dts | 266 ++++++++++++++++++
>   2 files changed, 267 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/rockchip/rk3588-tiger-haikou.dts
> 
> diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
> index a7b30e11beaf4..a44a9e15c9f62 100644
> --- a/arch/arm64/boot/dts/rockchip/Makefile
> +++ b/arch/arm64/boot/dts/rockchip/Makefile
> @@ -110,6 +110,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-nanopc-t6.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-orangepi-5-plus.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-quartzpro64.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-rock-5b.dtb
> +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-tiger-haikou.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-turing-rk1.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-coolpi-4b.dtb
>   dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-indiedroid-nova.dtb
> diff --git a/arch/arm64/boot/dts/rockchip/rk3588-tiger-haikou.dts b/arch/arm64/boot/dts/rockchip/rk3588-tiger-haikou.dts
> new file mode 100644
> index 0000000000000..c9340923dcb98
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/rk3588-tiger-haikou.dts

[...]

I just realized we have one regulator missing here:

"""
         vcc5v0_otg: vcc5v0-otg-regulator {
                 compatible = "regulator-fixed";
                 enable-active-high;
                 gpio = <&gpio1 RK_PB5 GPIO_ACTIVE_HIGH>;
                 pinctrl-names = "default";
                 pinctrl-0 = <&otg_vbus_drv>;
                 regulator-name = "vcc5v0_otg";
                 regulator-always-on;
         };

&pinctrl {
         usb {
                 otg_vbus_drv: otg-vbus-drv {
                         rockchip,pins =
                           <1 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>;
                 };
         };
};
"""

This regulator is part of the U11 IC on Haikou and the signal to enable 
it is Q7_USB_OTG_PEN. I guess we can add this once we have SW support in 
the kernel for the USB PHY/controller, so not a blocker.

> +	vcc5v0_usb: vcc5v0-usb-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vcc5v0_usb";
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		vin-supply = <&dc_12v>;
> +	};

[...]

> +&i2c5 {
> +	status = "okay";
> +	clock-frequency = <400000>;

I think we're supposed to have status = "okay" as last property before 
the children nodes.

Reviewed-by: Quentin Schulz <quentin.schulz@...obroma-systems.com>

Thanks,
Quentin