APPLIED Re: [PATCH 0/7][SRU][OEM-5.6] Support WD19TB external output on TGL platform

Juerg Haefliger juerg.haefliger at canonical.com
Wed Jul 8 10:06:25 UTC 2020


On Wed, 8 Jul 2020 08:43:59 +0300
Timo Aaltonen <tjaalton at ubuntu.com> wrote:

> On 3.7.2020 13.10, Hsuan-Yu Lin wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1886165
> > 
> > [Impact]
> > TGL platform can't output external monitor on WD19TB docking.
> > There's no screen on the external monitor.
> > error in dmesg:
> > 
> > [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underru
> > 
> > [Fix]
> > According to Intel's suggestion,
> > we need this: https://patchwork.freedesktop.org/series/78909/
> > Also for dependency, the following patches are landed in drm-tip
> > and necessary for support TGL platform:
> > 
> > * commit f4ece33f51d8 ("drm/i915/tgl+: Fix TBT DPLL fractional divider for 38.4MHz ref clock")
> > * commit a6e96d6948c8 ("drm/i915/tgl+: Use the correct DP_TP_* register instances in MST encoders")
> > * commit f822a79734e1 ("drm/i915/dc3co: Avoid full modeset when EXITLINE needs to be changed")
> > * commit 1a7e82efaa8a ("drm/i915/tgl: Add HBR and HBR2+ voltage swing table")
> > * commit 80907edcc6ed ("UBUNTU: SAUCE: drm/i915/bios: add intel_bios_hdmi_level_shift()")
> > * commit 6df896896c8d ("drm/i915/tgl: Implement WA_16011163337")
> > * commit cb730fe971f0 ("drm/i915/tgl: Update TC DP vswing table")  
> 
> Applied to oem-5.6-next, thanks

Oh. No 2 ACKs required for the OEM kernel?

...Juerg

 
> We need to add this to groovy kernel too, at least once it's mainline.
> 

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