Hi,
Microsoft has some documentation on GPIO handling with SD card controllers,
which should apply to most Cherryview devices:
https://msdn.microsoft.com/windows/hardware/drivers/bringup/other-acpi-namespace-objects#sd
I did some work on Cherryview SoC support in DragonFlyBSD.
In DragonFly m
Hi,
No driver for the DMA controller is needed for using the I2C controllers.
On many devices the I2C controllers are only mapped as ACPI devices, and
not as PCI-devices, but the existing ichiic driver can trivially be
adapted to attach via acpi, which is already done by DragonFly's ichiic:
https:
So autodetection via smbus(4) probably shouldn't be used at all for this
kind of I2c/smbus.
On my HP x2 210 Cherryview tablet it even causes the system to hard freeze,
when running the autodetection on the 7th I2C controller.
Imre
___
freebsd-current@fre
has to integrate tightly with the operating-system for the ACPI
operation region handling, and the I2cSerialBus resource handling.
> On Tue, Jun 21, 2016 at 7:00 AM, Imre Vadasz wrote:
>
> > So autodetection via smbus(4) probably shouldn't be used at all for this
> > kind of I
