CC Mika and Andy who should be more familiar with that problem space than I am.
On Thu, Nov 5, 2020 at 10:46 AM Flavio Suligoi <f.suligoi@xxxxxxx> wrote:
>
> Hi all,
>
> I'm working to introduce the "gpio-line-names" property in the ACPI
> configuration of the BIOS of our x86 boards (we can customize the BIOS of our
> boards).
>
> All is ok for the gpiochips related to the Intel chipset and some I2C gpio
> expanders. I have inserted the _DSD as described in the Linux documentation.
>
> In one of our boards we have an add-on PCI board, with a PCI serial device
> Exar XR17V352. This device also contains 16 gpios.
> The exar device drivers work good, both the "8250_exar" and the "gpio_exar", and
> I can manage the exar's gpios correctly.
> The problem is how to assign the gpio-line-names property to a PCI gpio
> expanders like this.
>
> I tried adding a new device in my ACPI configuration, as:
>
> Device (EXAR)
> {
> Name (_HID, "13A80352")
> Name (_STR, Unicode ("STR - Exar GPIOs")) // _STR: Description String
>
> Name (_DSD, Package () {
> ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
> Package () {
> Package () {
> "gpio-line-names",
> Package () {
> "exar_0",
> "exar_1",
> "exar_2",
> "exar_3",
> ...
> }
> }
> }
> })
> }
>
> but I have no result.
> Does anyone have a suggestion?
>
> Thanks,
>
> Flavio
