Hi!
This driver seems to have fallen by the wayside because, while otherwise fine, it has a firmware update feature that requires a blob that is not in the linux-firmware repo.[1]
Whatever the cause for that may be, the update code is entirely optional (my chip works fine with whatever firmware is currently installed), so I have removed it in order to get this merged after all. I have also followed various trivial API changes that have piled up since 2016; see the individual patches for details.
I'm using this driver on an Acer Chromebook R13 ("Elm"); see https://github.com/uli/kernel/tree/elm-working-5.4.
CU Uli
[1] https://patchwork.kernel.org/patch/9427543/
Jitao Shi (2): Documentation: bridge: Add documentation for ps8640 DT properties drm/bridge: Add I2C based driver for ps8640 bridge
.../devicetree/bindings/display/bridge/ps8640.txt | 44 ++ drivers/gpu/drm/bridge/Kconfig | 12 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/parade-ps8640.c | 672 +++++++++++++++++++++ 4 files changed, 729 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/ps8640.txt create mode 100644 drivers/gpu/drm/bridge/parade-ps8640.c