linux-kernel - Re: [PATCH v6 3/3] arm64: dts: rockchip: add dts for Ariaboard Photonicat RK3568

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Message-ID: <1e72cc9cdc390e79e97806fe4f7d8abf@manjaro.org>
Date: Sun, 12 Jan 2025 09:47:08 +0100
From: Dragan Simic <dsimic@...jaro.org>
To: Junhao Xie <bigfoot@...ssfun.cn>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, Rob
 Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor
 Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>, Jonas
 Karlman <jonas@...boo.se>, Chukun Pan <amadeus@....edu.cn>, FUKAUMI Naoki
 <naoki@...xa.com>, linux-rockchip@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 3/3] arm64: dts: rockchip: add dts for Ariaboard
 Photonicat RK3568

Hello Junhao,

On 2025-01-12 08:33, Junhao Xie wrote:
> Add dts for Ariaboard Photonicat RK3568.
> 
> Working IO:
>     Debug UART
>     SDIO QCA9377 WiFi and Bluetooth
>     M.2 E-Key PCIe WiFi and Bluetooth
>     M.2 B-Key USB Modem WWAN
>     Ethernet WAN Port
>     MicroSD Card slot
>     eMMC
>     HDMI Output
>     Mali GPU
>     USB Type-A
> 
> Not working IO:
>     Ethernet LAN Port (Lack of SGMII support)
>     Power management MCU on UART4 (Driver pending)
> 
> Not working IO in MCU:
>     Battery voltage sensor
>     Board temperature sensor
>     Hardware Power-off
>     Hardware Watchdog
>     Network status LED
>     Real-time clock
>     USB Charger voltage sensor
> 
> About onboard power management MCU:
>     A heartbeat must be sent to the MCU within 60 seconds,
>     otherwise the MCU will restart the system.
>     When powering off, a shutdown command needs to be sent to the MCU.
>     When the power button is long pressed, the MCU will send a shutdown
>     command to the system. If system does not shutdown within 60 
> seconds,
>     the power will be turned off directly.
>     MCU only provides voltage for charger and battery.
>     Manufacturer removed RK8xx PMIC.

Unless the design of the board is proprietary, it would be good
to provide a link to the board schematic, for those interested
in verifying the board DT file.

As a note, I already tried to find the board schematic with no
success, so the design might be proprietary.