linux-kernel - Re: [PATCH v2 3/3] arm64: dts: rockchip: Add devicetree for the NineTripod X3568 v4

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Message-ID: <b4395d23-9004-4a01-942f-060876312317@kernel.org>
Date: Sun, 26 Oct 2025 09:36:51 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Coia Prant <coiaprant@...il.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>,
 Dragan Simic <dsimic@...jaro.org>, Jonas Karlman <jonas@...boo.se>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Subject: Re: [PATCH v2 3/3] arm64: dts: rockchip: Add devicetree for the
 NineTripod X3568 v4

On 26/10/2025 07:28, Coia Prant wrote:
> The NineTripod X3568 v4 is an RK3568-based SBC, just like the RK3568-EVB.
> It always uses soldered connections between the X3568CV2 core board and the X3568bv4 IO board.
> 
> The X3568 board has multiple hardware revisions, and we currently support v4.
> 
> Specification:
> - SoC: RockChip RK3568 ARM64 (4 cores)
> - eMMC: 16-128 GB
> - RAM: 2-8 GB
> - Power: DC 12V 2A
> - Ethernet: 2x YT8521SC RGMII (10/100/1000 Mbps)
> - Wireless radio: 802.11b/g/n/ac/ax dual-band
> - LED:
>   Power: AlwaysOn
>   User: GPIO
> - Button:
>   VOL+: SARADC/0 <35k µV>
>   VOL-: SARADC/0 <450k µV>
>   Power/Reset: PMIC RK809
> - CAN
>   CAN/1: 4-pin (PH 2.0)
> - PWM
>   PWM/4: Backlight DSI/0 DSI/1
>   PWM/7: IR Receiver [may not install]
> - UART:
>   UART/2: Debug TTL - 1500000 8N1 (1.25mm)
>   UART/3: TTL (PH 2.0)
>   UART/4: TTL (PH 2.0)
>   UART/8: AP6275S Bluetooth
>   UART/9: TTL (PH 2.0)
> - I2C:
>   I2C/0: PMIC RK809
>   I2C/1: Touchscreen DSI/0 DSI/1
>   I2C/4: Camera
>   I2C/5: RTC@51 PCF8563
> - I2S:
>   I2S/0: miniHDMI Sound
>   I2S/1: RK809 Audio Codec
>   I2S/3: AP6275S Bluetooth Sound
> - SDMMC:
>   SDMMC/0: microSD (TF) slot
>   SDMMC/2: AP6275S SDIO WiFi card
> - Camera: 1x CSI
> - Video: miniHDMI / DSI0 (MIPI/LVDS) / DSI1 (MIPI/EDP)
> - Audio: miniHDMI / MIC on-board / Speaker / SPDIF / 3.5mm Headphones / AP6275S Bluetooth
> - USB:
>   USB 2.0 HOST x2
>   USB 2.0 HOST x3 (4-pin)
>   USB 2.0 OTG x1 (shared with USB 3.0 OTG/HOST) [slot may not install]
>   USB 3.0 HOST x1
>   USB 3.0 OTG/HOST x1
> - SATA: 1x SATA 3.0 with Power/4-pin [slot may not install]
> - PCIe: 1x PCIe 3.0 x2 (x4 connecter) [clock/slot may not install]
> 
> Link:
> - https://appletsapi.52solution.com/media/X3568V4%E5%BC%80%E5%8F%91%E6%9D%BF%E7%A1%AC%E4%BB%B6%E6%89%8B%E5%86%8C.pdf
> - https://blog.gov.cooking/archives/research-ninetripod-x3568-v4-and-flash.html
> 
> Signed-off-by: Coia Prant <coiaprant@...il.com>
> Cc: stable@...r.kernel.org


While adding vendor prefix could fall into adding quirks (it's not...),
but how is new support supposed to be bugfix or quirk?

That's definitely not right.


Best regards,
Krzysztof