drm: renesas: rz-du: Implement MIPI DSI host transfers

Browse source

Add support for sending MIPI DSI command packets from the host to a
peripheral. This is required for panels that need configuration before
they accept video data.

Also for long reads to work properly, set DCS maximum return packet size
to the value of the DMA buffer size.

Based on Renesas Linux kernel v5.10 repos [1].
Link: https://github.com/renesas-rz/rz_linux-cip.git

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Tested-by: Chris Brandt <Chris.Brandt@renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20250604145306.1170676-2-hugo@hugovil.com

...

This commit is contained in:

Hugo Villeneuve 2025-06-04 10:53:06 -04:00 • committed by Biju Das

parent 93614c2ab3

commit 6f392f3716

2 changed files with 240 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

186

drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c

View file

54

drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi_regs.h

View file