On Thu, 31 Mar 2022 at 17:05, Marek Vasut <marex@xxxxxxx> wrote: > > This series fixes multiple problems with the ICN6211 driver and adds > support for configuration of the chip via I2C bus. > > First, in the current state, the ICN6211 driver hard-codes DPI timing > and clock settings specific to some unknown panel. The settings provided > by panel driver are ignored. Using any other panel than the one for which > this driver is currently hard-coded can lead to permanent damage of the > panel (per display supplier warning, and it sure did in my case. The > damage looks like multiple rows of dead pixels at the bottom of the > panel, and this is not going away even after long power off time). > > Much of this series thus fixes incorrect register layout, DPI timing > programming, clock generation by adding actual PLL configuration code. > This series no longer adds lane count decoding and retains current > hard-coded lane count 4 due to disagreement over lane count parsing > from DT. The lane count support will come later. The series also fills > in a couple of registers with likely correct default values. > > Second, this series adds support for I2C configuration of the ICN6211. > The device can be configured either via DSI command mode or via I2C, > the register layout is the same in both cases. > > Since the datasheet for this device is very hard to come by, a lot of > information has been salvaged from [1] and [2]. > > [1] https://github.com/rockchip-linux/kernel/blob/develop-4.19/drivers/gpu/drm/bridge/icn6211.c > [2] https://github.com/tdjastrzebski/ICN6211-Configurator > > Cc: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> > Cc: Maxime Ripard <maxime@xxxxxxxxxx> > Cc: Robert Foss <robert.foss@xxxxxxxxxx> > Cc: Sam Ravnborg <sam@xxxxxxxxxxxx> > Cc: Thomas Zimmermann <tzimmermann@xxxxxxx> > To: dri-devel@xxxxxxxxxxxxxxxxxxxxx > > Marek Vasut (11): > drm: bridge: icn6211: Fix register layout > drm: bridge: icn6211: Fix HFP_HSW_HBP_HI and HFP_MIN handling > drm: bridge: icn6211: Add HS/VS/DE polarity handling > drm: bridge: icn6211: Add generic DSI-to-DPI PLL configuration > drm: bridge: icn6211: Use DSI burst mode without EoT and with LP > command mode > drm: bridge: icn6211: Disable DPI color swap > drm: bridge: icn6211: Set SYS_CTRL_1 to value used in examples > drm: bridge: icn6211: Implement atomic_get_input_bus_fmts > drm: bridge: icn6211: Add I2C configuration support > drm: bridge: icn6211: Rework ICN6211_DSI to chipone_writeb() > drm: bridge: icn6211: Read and validate chip IDs before configuration > > drivers/gpu/drm/bridge/chipone-icn6211.c | 491 ++++++++++++++++++++--- > 1 file changed, 437 insertions(+), 54 deletions(-) > > -- > 2.35.1 > Applied to drm-misc-next.
