[RFC PATCH 0/1] drm/bridge: ti-sn65dsi83: Fix LVDS panel overclocking

[estl at gmx.net]

From: Eberhard Stoll <eberhard.stoll at kontron.de>

I'm currently working on a board with stm32mp157 SOC which contains
a synposys LTDC to DSI bridge (drm/stm/dw_mipi_dsi-stm.c). In this
configuration i observe a overclocking of the LVDS pixel clock.

The reason for this is, that the synopsys bridge increases the DSI
lane clock by 20% for burst mode. On the other hand the sn65dsi83
chip uses the DSI lane clock to generate LVDS pixel clock. So in
this configuration the LVDS pixel clock is 20% higher as the panel
configuration pretends.

Removing burst mode solves this issue. It also seems sensible to
me, that a fixed divider to generate the pixel clock out of the DSI
lane clock is not compatible with burst mode.

But i'm not sure if i'm missing someting in the big picture and
whether this issue should be solved somewhere else.

Eberhard Stoll (1):
  drm/bridge: ti-sn65dsi83: Remove burst mode

 drivers/gpu/drm/bridge/ti-sn65dsi83.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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2.25.1