Re: Anyone working on ACPI fan control for the Honeycomb?

Reply: Greg V : "Re: Anyone working on ACPI fan control for the Honeycomb?"
In reply to: Rebecca Cran : "Anyone working on ACPI fan control for the Honeycomb?"
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From: Dmitry Salychev via freebsd-arm <freebsd-arm_at_freebsd.org>
Date: Mon, 05 Jul 2021 12:37:05 UTC

> I was wondering if anyone's working on ACPI fan control for the SolidRun
> Honeycomb? Under FreeBSD, the fan remains obnoxiously loud, and it's
> annoying enough that if nobody else is working on it I might tackle
> implementing support for spinning them down.

I know that Jon Nettleton from SolidRun achieved some results with PWM
controller support in UEFI recently, but I don't know when he's going to share
those changes.

Btw, he's also mentioned that FreeBSD should support I2C controller (in order to
read temperature) known in ACPI as NXP0001. It seems to me that
sys/arm/freescale/imx/imx_i2c.c should work, but it expects I2C controller to be
described in FDT. If you could modify it to attach imx_i2c driver to the
I2C controller on ACPI bus, it might be useful.

Regards,
Dmitry