mbox series

[v2,0/2] Init flow fixes for Samsung DSIM and TI SN65DSI84

Message ID 20230503163313.2640898-1-frieder@fris.de
Headers
Series Init flow fixes for Samsung DSIM and TI SN65DSI84 |

Message

Frieder Schrempf May 3, 2023, 4:33 p.m. UTC 
  From: Frieder Schrempf <frieder.schrempf@kontron.de>

This patchset contains a proposal to fix the initialization flow for
the display pipeline used on our i.MX8MM Kontron boards:

  i.MX8MM LCDIF -> i.MX8MM DSIM -> TI SN65DSI84 -> 7" LVDS Panel

Without these changes the display works most of the time, but fails
to come up occassionally when booting or doing on/off cycling tests
with:

  echo 0 > /sys/devices/platform/soc@0/32c00000.bus/32e00000.lcdif/graphics/fb0/blank
  echo 1 > /sys/devices/platform/soc@0/32c00000.bus/32e00000.lcdif/graphics/fb0/blank

All the changes intend to follow the documentation provided here:
https://docs.kernel.org/gpu/drm-kms-helpers.html#mipi-dsi-bridge-operation

Changes for v2:
* Drop RFC
* Drop non-working Exynos cleanup patch 3/3

Frieder Schrempf (2):
  drm: bridge: samsung-dsim: Fix i.MX8M enable flow to meet spec
  drm/bridge: ti-sn65dsi83: Fix enable/disable flow to meet spec

 drivers/gpu/drm/bridge/samsung-dsim.c | 25 +++++++++++++++++++++++--
 drivers/gpu/drm/bridge/ti-sn65dsi83.c | 19 ++++++++++++++++---
 2 files changed, 39 insertions(+), 5 deletions(-)

Comments

Neil Armstrong May 25, 2023, 4:19 p.m. UTC | #1 
Hi,

On Wed, 03 May 2023 18:33:05 +0200, Frieder Schrempf wrote:
> From: Frieder Schrempf <frieder.schrempf@kontron.de>
> 
> This patchset contains a proposal to fix the initialization flow for
> the display pipeline used on our i.MX8MM Kontron boards:
> 
>   i.MX8MM LCDIF -> i.MX8MM DSIM -> TI SN65DSI84 -> 7" LVDS Panel
> 
> [...]

Thanks, Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)

[1/2] drm: bridge: samsung-dsim: Fix i.MX8M enable flow to meet spec
      https://cgit.freedesktop.org/drm/drm-misc/commit/?id=0c14d3130654fe459fca3067d2d4317fc607bc71
[2/2] drm/bridge: ti-sn65dsi83: Fix enable/disable flow to meet spec
      https://cgit.freedesktop.org/drm/drm-misc/commit/?id=dd9e329af7236e34c566d3705ea32a63069b9b13