Hi, On 11/16/21 12:00, Andy Shevchenko wrote: > On Sun, Nov 14, 2021 at 7:03 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote: >> >> Hi All, >> >> This is version 2 of my series previously titled: >> "[PATCH 00/13] power-suppy/i2c/extcon: Add support for cht-wc PMIC >> without USB-PD support". >> >> So far almost all the kernel code surrounding the Cherry Trail Whiskey Cove >> PMIC has been developed on the GPD win / pocket devices and it has various >> assumption based on that. In the mean time I've learned (and gotten access >> to) about 2 more designs and none of the 3 now known designs use a single >> standard setup for the charger, fuel-gauge and other chips surrounding the >> PMIC / charging+data USB port: >> >> 1. The GPD Win and GPD Pocket mini-laptops, these are really 2 models >> but the Pocket re-uses the GPD Win's design in a different housing: >> >> The WC PMIC is connected to a TI BQ24292i charger, paired with >> a Maxim MAX17047 fuelgauge + a FUSB302 USB Type-C Controller + >> a PI3USB30532 USB switch, for a fully functional Type-C port. >> >> 2. The Xiaomi Mi Pad 2: >> >> The WC PMIC is connected to a TI BQ25890 charger, paired with >> a TI BQ27520 fuelgauge, using the TI BQ25890 for BC1.2 charger type >> detection, for a USB-2 only Type-C port without PD. >> >> 3. The Lenovo Yoga Book YB1-X90 / Lenovo Yoga Book YB1-X91 series: >> >> The WC PMIC is connected to a TI BQ25892 charger, paired with >> a TI BQ27542 fuelgauge, using the WC PMIC for BC1.2 charger type >> detection and using the BQ25892's Mediatek Pump Express+ (1.0) >> >> ### >> >> Unlike what is normal on X86 this diversity in designs is not handled / >> abstracted away by the ACPI tables. > > I will briefly look into it, right now two observations (or nit-picks): Thank you. > - you may utilize Co-developed-by tag when it makes sense Right, I intended to do so in patch 13/20, but I now see that I somehow forgot that :) > - I would rather see "x86/ACPI" in all texts (note small "x") Ack. Regards, Hans
