[PATCH v2 0/2] Add support for Renesas RZ/G3L LVDS encoder

[Biju]

From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>

Add support for the RZ/G3L LVDS encoder driver. It operates in single-link
mode with 4 lanes (Data) + 1 lane (Clock) and supports pixel clock rates
from 25 to 87 MHz. The LVDS module cannot be used at the same time as
MIPI-DSI. However, LVDS and the DSI interface share a peripheral clock and
the MIPI_DSI_PRESET_N reset signal. Also, the MIPI_DSI_CMN_RSTB and
MIPI_DSI_ARESET_N reset signals must be asserted before using the LVDS
module.

v2->v3:
 * Dropped patch#1 as it is accepted.
 * Replace drm_atomic_state with drm_atomic_commit in
   rzg3l_lvds_atomic_{en,dis}able().
 * Drop local variable ret and dev_err() messages in
   rzg3l_lvds_atomic_enable(); use WARN_ON() instead to
   capture unexpected failures since atomic_enable should not fail.
 * Drop local variable next_bridge from rzg3l_lvds_probe().
v1->v2:
 * Collected the tags for binding patches.
 * Dropped unused function rzg3l_lvds_is_connected() and removed the 
   corresponding header file rzg3l_lvds.h
 * Dropped next_bridge from struct rzg3l_lvds instead using bridge's
   next_bridge.
 * Replaced pm_runtime_resume_and_get()->pm_runtime_get_sync() as
   atomic_enable doesn't fail and for each enable there always will be an
   atomic_disable() call.
 * Started using DEFINE_RUNTIME_DEV_PM_OPS for PM callback.
 * Replaced rzg3l_lvds_parse_dt() with devm_drm_of_get_bridge() in probe()
 * Started using reset_control_bulk_*() in rzg3l_lvds_pm_runtime_{suspend,
   resume}().

Biju Das (2):
  dt-bindings: display: bridge: Document Renesas RZ/G3L LVDS encoder
  drm: renesas: rz-du: Add support for RZ/G3L LVDS encoder

 .../bridge/renesas,r9a08g046-lvds.yaml        | 128 ++++++++
 drivers/gpu/drm/renesas/rz-du/Kconfig         |  13 +
 drivers/gpu/drm/renesas/rz-du/Makefile        |   1 +
 drivers/gpu/drm/renesas/rz-du/rzg3l_lvds.c    | 277 ++++++++++++++++++
 .../gpu/drm/renesas/rz-du/rzg3l_lvds_regs.h   |  26 ++
 5 files changed, 445 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/renesas,r9a08g046-lvds.yaml
 create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg3l_lvds.c
 create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg3l_lvds_regs.h

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2.43.0