Hi Vasily, On 14/2/20 23:22, Vasily Khoruzhick wrote: > On Fri, Feb 14, 2020 at 2:20 PM Enric Balletbo Serra > <eballetbo@xxxxxxxxx> wrote: >> >> Hi Vasily, >> >> Missatge de Vasily Khoruzhick <anarsoul@xxxxxxxxx> del dia dv., 14 de >> febr. 2020 a les 23:17: >>> >>> On Fri, Feb 14, 2020 at 1:53 PM Enric Balletbo Serra >>> <eballetbo@xxxxxxxxx> wrote: >>>> >>>> Hi Vasily, >>>> >>>> Missatge de Vasily Khoruzhick <anarsoul@xxxxxxxxx> del dia dv., 14 de >>>> febr. 2020 a les 22:36: >>>>> >>>>> On Thu, Feb 13, 2020 at 6:54 AM Enric Balletbo i Serra >>>>> <enric.balletbo@xxxxxxxxxxxxx> wrote: >>>>>> >>>>>> From: Nicolas Boichat <drinkcat@xxxxxxxxxxxx> >>>>>> >>>>>> ANX7688 is a HDMI to DP converter (as well as USB-C port controller), >>>>>> that has an internal microcontroller. >>>>>> >>>>>> The only reason a Linux kernel driver is necessary is to reject >>>>>> resolutions that require more bandwidth than what is available on >>>>>> the DP side. DP bandwidth and lane count are reported by the bridge >>>>>> via 2 registers on I2C. >>>>> >>>>> It is true only for your particular platform where usb-c part is >>>>> managed by firmware. Pinephone has the same anx7688 but linux will >>>>> need a driver that manages usb-c in addition to DP. >>>>> >>>>> I'd suggest making it MFD driver from the beginning, or at least make >>>>> proper bindings so we don't have to rework it and introduce binding >>>>> incompatibilities in future. >>>>> >>>> >>>> Do you have example code on how the ANX7866 is used in pinephone? >>>> There is a repo somewhere? >>> >>> I don't think it's implemented yet. I've CCed Icenowy in case if she >>> has anything. >>> >> >> It would be good to join the effort. Just because I am curious, there >> are public schematics for the pinephone that is using that bridge? > > Schematics is available here: > https://wiki.pine64.org/index.php/PinePhone_v1.1_-_Braveheart#Schematic > Would you mind to check which firmware version is running the anx7688 in PinePhone, I think should be easy to check with i2c-tools. Thanks in advance, Enric [snip] _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
