Searched hist:"582 ab24e096fd591026de6f1bbae104e45fecf0f" (Results 1 – 1 of 1) sorted by relevance
| /linux/drivers/usb/dwc3/ |
| H A D | dwc3-pci.c | diff 582ab24e096fd591026de6f1bbae104e45fecf0f Sun Feb 13 14:05:19 CET 2022 Hans de Goede <hdegoede@redhat.com> usb: dwc3: pci: Set "linux,phy_charger_detect" property on some Bay Trail boards
Some Android x86 tablets with a Bay Trail (BYT) SoC and a Crystal Cove
PMIC, which does not support charger-detection, rely on the TUSB1211 phy
for charger-detection.
Windows tablets with the same SoC + PMIC often use an extra chip for
charger-detection like the FSA831A. But since on Android tablets
the designers already need to add a TUSB1211 phy to support device/gadget
mode the phy is used to do charger-detection instead.
These Android x86 tablets can be identified by the unique combination of
a Bay Trail SoC (already checked for by PCI-ids) + a Crystal Cove PMIC +
not using the standard ACPI battery and ac drivers. Where as on Windows
tablets the standard ACPI battery and ac drivers will be used on BYT
boards with a Crystal Cove PMIC.
Set a special kernel-internal (so not part of the dt-bindings)
"linux,phy_charger_detect" property on these boards, which tells the
tusb1210 driver to enable charger-detection.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220213130524.18748-5-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|