[PATCH 4/4] board: rockchip: Add Radxa ROCK 4D

[Quentin Schulz]

Hi Jonas,

On 7/12/25 1:06 AM, Jonas Karlman wrote:
> The Radxa ROCK 4D is a compact single-board computer (SBC) featuring
> numerous top-tier functions, features, and expansion options.
> 
> Equipped with the Rockchip RK3576 or RK3576J SoC, the ROCK 4D boasts an
> octa-core CPU (4x Cortex-A72 + 4x Cortex-A53), Mali-G52 GPU, and a
> powerful 6 TOPS NPU, making it ideal for AI and multimedia tasks.
> 
> Features tested on a Radxa ROCK 4D v1.112:
> - SPI Flash boot
> - Ethernet
> 
> ROCK 4D boards with SPI Flash is configured to boot from FSPI0->UFS->USB,
> or directly from USB when the MASKROM button is pressed, booting
> directly from SD-card is not possible on these boards.
> 
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
> ---
>   arch/arm/dts/rk3576-rock-4d-u-boot.dtsi   | 15 +++++
>   arch/arm/mach-rockchip/rk3576/MAINTAINERS |  6 ++
>   configs/rock-4d-rk3576_defconfig          | 68 +++++++++++++++++++++++
>   doc/board/rockchip/rockchip.rst           |  1 +
>   4 files changed, 90 insertions(+)
>   create mode 100644 arch/arm/dts/rk3576-rock-4d-u-boot.dtsi
>   create mode 100644 configs/rock-4d-rk3576_defconfig
> 
> diff --git a/arch/arm/dts/rk3576-rock-4d-u-boot.dtsi b/arch/arm/dts/rk3576-rock-4d-u-boot.dtsi
> new file mode 100644
> index 000000000000..5056a1cecb83
> --- /dev/null
> +++ b/arch/arm/dts/rk3576-rock-4d-u-boot.dtsi
> @@ -0,0 +1,15 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +#include "rk3576-u-boot.dtsi"
> +
> +&rgmii_phy0 {
> +	/delete-property/ reset-gpio;
> +	reset-gpios = <&gpio2 RK_PB5 GPIO_ACTIVE_LOW>;

Why?

If the upstream DT is wrong, please fix the upstream DT first and 
cherry-pick.

If it isn't wrong, then can't we simply patch the PHY subsystem/driver 
to be able to read reset-gpio too instead?

Cheers,
Quentin