mbox series

[0/2] usb: typec: ucsi: add workaround for several Qualcomm platforms

Message ID 20231023215327.695720-1-dmitry.baryshkov@linaro.org (mailing list archive)
Headers show
Series usb: typec: ucsi: add workaround for several Qualcomm platforms | expand

Message

Dmitry Baryshkov Oct. 23, 2023, 9:47 p.m. UTC 
The UCSI firmware on Qualcomm SC8180X, SC8280XP and SM8350 are buggy.
Submitting UCSI_GET_PDOS command for partners which do not actually
support PD and do not have PDOs causes firmware to crash, preventing
further UCSI activity. Firmware on newer platforms have fixed this
issue. In order to still be able to use UCSI functionality on the
mentioned platforms (e.g. to be able to handle USB role switching),
apply a workaround that completely shortcuts UCSI_GET_PDOS command for
the USB-C partner.

This has been tested on sm8350 only, but should apply to other two
platforms.

Dmitry Baryshkov (2):
  usb: typec: ucsi: fix UCSI on buggy Qualcomm devices
  soc: qcom: pmic-glink: enable UCSI on older devices

 drivers/soc/qcom/pmic_glink.c       | 7 +++++++
 drivers/usb/typec/ucsi/ucsi.c       | 3 +++
 drivers/usb/typec/ucsi/ucsi.h       | 3 +++
 drivers/usb/typec/ucsi/ucsi_glink.c | 3 +++
 4 files changed, 16 insertions(+)