linux-kernel - [PATCH v4 0/1] drm: rcar-du: rzg2l_mipi

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Message-Id: <20250604145306.1170676-1-hugo@hugovil.com>
Date: Wed,  4 Jun 2025 10:53:05 -0400
From: Hugo Villeneuve <hugo@...ovil.com>
To: biju.das.jz@...renesas.com,
	maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	airlied@...il.com,
	simona@...ll.ch
Cc: dri-devel@...ts.freedesktop.org,
	linux-renesas-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	hugo@...ovil.com,
	chris.brandt@...esas.com,
	Hugo Villeneuve <hvilleneuve@...onoff.com>
Subject: [PATCH v4 0/1] drm: rcar-du: rzg2l_mipi_dsi: add MIPI DSI command support

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

Hello,
this patch series add support for sending MIPI DSI command packets to the
Renesas RZ/G2L MIPI DSI driver.

Tested on a custom board with a SolidRun RZ/G2L SOM, with two different LCD
panels using the jd9365da and st7703 drivers.

Tested short and long writes.

Tested read of 1 byte, 2 bytes and long reads. Note that to test long reads,
most LCD panels need to be sent a DCS configuration command to increase the
maximum packet size, which is set to 1 byte by default (at least on the two
panels that I tested).

Thank you.

Link: [v1] https://lore.kernel.org/all/20250520164034.3453315-1-hugo@hugovil.com
Link: [v3] https://lore.kernel.org/all/20250522143911.138077-1-hugo@hugovil.com
Link: [dep1] https://lore.kernel.org/all/20250521210335.3149065-1-chris.brandt@renesas.com/raw

Changes for V4:
- Rebased on drm-misc-next, since this series depends on [dep1]
- Move init of DCS maximum return packet size to rzg2l_mipi_dsi_startup()
- Reworded comment for DCS maximum return packet size
- Merged patches 1 and 2

Changes for V3:
- No code change, resending after fixing mail server config resulting in
  only cover letter being sent

Changes for V2:
- Change commit message prefix to "drm: renesas: rz-du: "
- Reorder variables in rzg2l_mipi_dsi_read_response()
- Remove unused macros
- Add missing bitfield include (kernel test robot)

Hugo Villeneuve (1):
  drm: renesas: rz-du: Implement MIPI DSI host transfers

 .../gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c    | 186 ++++++++++++++++++
 .../drm/renesas/rz-du/rzg2l_mipi_dsi_regs.h   |  54 +++++
 2 files changed, 240 insertions(+)


base-commit: 685c407f168cb49a12cc703230d1e2d62767bfd2
-- 
2.39.5