Re: [Intel-gfx] [PATCH] drm/i915/dsi: unregister gmbus if LFP display was MIPI panel

2021-09-16 Thread Jani Nikula
On Thu, 16 Sep 2021, "Lee, Shawn C" wrote: > On Thu, 16 Sep 2021, Jani Nikula wrote: >>On Thu, 16 Sep 2021, Lee Shawn C wrote: >>> Gmbus driver would setup all Intel i2c GMBuses. But DDC bus may >>> configured as gpio and reserved for MIPI driver to control panel power >>> on/off sequence.

Re: [Intel-gfx] [PATCH] drm/i915/dsi: unregister gmbus if LFP display was MIPI panel

2021-09-16 Thread Lee, Shawn C
On Thu, 16 Sep 2021, Jani Nikula wrote: >On Thu, 16 Sep 2021, Lee Shawn C wrote: >> Gmbus driver would setup all Intel i2c GMBuses. But DDC bus may >> configured as gpio and reserved for MIPI driver to control panel power >> on/off sequence. >> >> Using i2c tool to communicate to peripherals

Re: [Intel-gfx] [PATCH] drm/i915/dsi: unregister gmbus if LFP display was MIPI panel

2021-09-16 Thread Jani Nikula
On Thu, 16 Sep 2021, Lee Shawn C wrote: > Gmbus driver would setup all Intel i2c GMBuses. But DDC bus > may configured as gpio and reserved for MIPI driver to control > panel power on/off sequence. > > Using i2c tool to communicate to peripherals via i2c interface > reversed for gmbus(DDC). There

[Intel-gfx] [PATCH] drm/i915/dsi: unregister gmbus if LFP display was MIPI panel

2021-09-16 Thread Lee Shawn C
Gmbus driver would setup all Intel i2c GMBuses. But DDC bus may configured as gpio and reserved for MIPI driver to control panel power on/off sequence. Using i2c tool to communicate to peripherals via i2c interface reversed for gmbus(DDC). There will be some high/low pulse appear on DDC SCL and