Re: [PATCH 18/18] ipu3: Add driver for dummy INT3472 ACPI device

Andy Shevchenko
2020-12-01T18:32:33Z

On Mon, Nov 30, 2020 at 11:20:55PM +0000, Dan Scally wrote:
> On 30/11/2020 16:17, Jean-Michel Hautbois wrote:

...

> but the ACPI table doesn't define an I2CSerialBusV2 for it. Instead it's
> rolled under the sensor's entry, there's a second entry in _CRS for the
> sensor that matches the address of the new device:
>
>
> Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
> {
> Name (SBUF, ResourceTemplate ()
> {
> I2cSerialBusV2 (0x0036, ControllerInitiated, 0x00061A80,
> AddressingMode7Bit, "\\_SB.PCI0.I2C2",
> 0x00, ResourceConsumer, , Exclusive,
> )
> I2cSerialBusV2 (0x000C, ControllerInitiated, 0x00061A80,
> AddressingMode7Bit, "\\_SB.PCI0.I2C2",
> 0x00, ResourceConsumer, , Exclusive,
> )
> })
> Return (SBUF) /* \_SB_.PCI0.CAM0._CRS.SBUF */
> }
>
> So that's another thing we need to work on. At the moment it doesn't
> exist as far as the kernel is concerned.

Maybe something along i2c-multi-instantiate can help here (maybe not).

P.S. Dan, can you drop unrelated text when replying?

--
With Best Regards,
Andy Shevchenko