[PATCH v3 0/3] Improve eye-diagram & single-ended test for rk3288 hdmi

Yakir Yang ykk at rock-chips.com
Mon Mar 9 02:42:21 PDT 2015

RK3288 hdmi eye-diagram test would fail when pixel clock is 148.5MHz,
and single-ended test would failed when display mode is 74.25MHz.

To fix such problems, we make those patch set:
- Fix some code style, leave space for next patches.
- For hdmi eye-diagram test, we turn on the Transmitter Trailer-B and
  improve slopeboost to 10%-20% decrease.
- For hdmi single-ended test, set CKLVL to 18 and TXLVL to 19 when
  pixel clock is 74.25MHz. set CKLVL to 13 and TXLVL to 13 when pixel
  clock is 148.5MHz.

Changes in v3:
- make commit message more readable
- For pixel clock less than 148.5MHz, set txlvl to 20.

Changes in v2:
- Set slopeboost back to 10%-20%, then rasing/falling time would pass.
- For pixel clock less than 74.25MHz, set txlvl to 19 and set cklvl to 18.

Yakir Yang (3):
  drm: bridge/dw_hdmi: fixed codec style
  drm: bridge/dw_hdmi_rockchip: improve hdmi eye-diagram test
  drm: bridge/dw_hdmi: improve hdmi single-end test

 drivers/gpu/drm/bridge/dw_hdmi.c            | 20 ++++++++++----------
 drivers/gpu/drm/imx/dw_hdmi-imx.c           | 12 ++++++------
 drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 14 +++++++-------
 include/drm/bridge/dw_hdmi.h                |  5 +++--
 4 files changed, 26 insertions(+), 25 deletions(-)


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