Re: [PATCH] pwm: argon-fan-hat: Add hardware dependency

[Jean Delvare <jdelvare@suse.de>]

On Mon, 2025-11-03 at 18:05 +0100, Marek Vasut wrote:
> On 11/3/25 5:21 PM, Jean Delvare wrote:
> > On Mon, 2025-11-03 at 16:55 +0100, Marek Vasut wrote:
> > > This fan plugs into any arbitrary board with compatible 2x20 connector,
> > > not only RPi. That connector is present on all kinds of fruitboards with
> > > different non-BCM2835 SoCs.
> > 
> > Yet the company who builds and sells this fan device, markets it as
> > compatible with Raspberry Pi 3 and Raspberry Pi 4 only:
> > 
> > https://argon40.com/products/argon-fan-hat
> 
> I don't think 5V , GND , and 3V3 I2C signals are in any way special to 
> RPi , so that statement seems to be only marketing .

Might be because they also sell compatible casings for Raspberry Pi 3+
where this fan fits nicely.

> > Which other "fruitboards" would be supported, and what SoCs are they
> > using?
> 
> I know of at least one Retronix R-Car Sparrow Hawk board (currently 
> upstream including DTO for this fan, uses Renesas R-Car V4H SoC), ST 
> STM32MP13xx DHCOM DHSBC board also works with this fan (tested locally).
> 
> The 2x20 RPi-like connector is increasingly present on those evaluation 
> boards, with matching pinout, to be compatible with all those expansion 
> modules, like this fan.

Does this connector have a name? If so, it could be included in the
description. And even if not, maybe we can extend the description to
make it clear that more boards might use this fan hat?

Thanks,
-- 
Jean Delvare
SUSE L3 Support