On Thu, Oct 26, 2017 at 10:53 AM, AceLan Kao <[email protected]> wrote: > The Dell AIO machines released after 2017 come with a UART interface > to communicate with the backlight scalar board. This driver creates > a standard backlight interface and talks to the scalar board through > UART. > > In DSDT this uart port will be defined as > Name (_HID, "DELL0501") > Name (_CID, EisaId ("PNP0501") > The 8250 PNP driver will be loaded by default, and this driver uses > "DELL0501" to confirm the uart port is a backlight interface and > leverages the port created by 8250 PNP driver to communicate with > the scalar board.
So, I will wait for next version based on serdev approach and then will give my comments if any. -- With Best Regards, Andy Shevchenko
