linux-kernel - Re: [PATCH v2 0/2] drm: bridge: add ssd2825 RGB/DSI bridge support

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Message-ID: <CAPVz0n0WG1Q51SONb4fmkzi4q7Q0sZ_aKSLrLnGboNNya6nO+Q@mail.gmail.com>
Date: Tue, 18 Feb 2025 14:48:48 +0200
From: Svyatoslav Ryhel <clamor95@...il.com>
To: Thomas Zimmermann <tzimmermann@...e.de>
Cc: Andrzej Hajda <andrzej.hajda@...el.com>, Neil Armstrong <neil.armstrong@...aro.org>, 
	Robert Foss <rfoss@...nel.org>, Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
	Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Javier Martinez Canillas <javierm@...hat.com>, dri-devel@...ts.freedesktop.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/2] drm: bridge: add ssd2825 RGB/DSI bridge support

вт, 18 лют. 2025 р. о 14:36 Thomas Zimmermann <tzimmermann@...e.de> пише:
>
> (cc'ing Javier)
>
> Hi
>
> Am 17.02.25 um 15:09 schrieb Svyatoslav Ryhel:
> > Solomon SSD2825 is a RGB to MIPI DSI bridge used in LG Optimus 4D P880
> > and LG Optimus Vu P895
>
> There's a driver for Solomon 13xx displays in drm/solomon. Did you check
> that this new driver isn't just an extension of the existing code?
>

Definitely no, ssd2825 is a RGB to DSI bridge in a pure form. While
13xx as you have said are display controllers family.

> Best regards
> Thomas
>
> >
> > ---
> > Changes on switching from v1 to v2:
> > - added description for clock
> > - removed clock-names
> > - added boundries for hs-zero-delay-ns and hs-prep-delay-ns
> > - added mutex lock for host transfers
> > - converted to atomic ops
> > - get drm_display_mode mode with atomic helpers
> > - parameterized INTERFACE_CTRL_REG_6 configuration
> > - added video mode validation and fixup
> > - removed clock name
> > - switched to devm_regulator_bulk_get_const
> > - added default timings
> > ---
> >
> > Svyatoslav Ryhel (2):
> >    dt-bindings: display: bridge: Document Solomon SSD2825
> >    drm: bridge: Add support for Solomon SSD2825 RGB/DSI bridge
> >
> >   .../display/bridge/solomon,ssd2825.yaml       | 141 +++
> >   drivers/gpu/drm/bridge/Kconfig                |  14 +
> >   drivers/gpu/drm/bridge/Makefile               |   1 +
> >   drivers/gpu/drm/bridge/ssd2825.c              | 824 ++++++++++++++++++
> >   4 files changed, 980 insertions(+)
> >   create mode 100644 Documentation/devicetree/bindings/display/bridge/solomon,ssd2825.yaml
> >   create mode 100644 drivers/gpu/drm/bridge/ssd2825.c
> >
>
> --
> --
> Thomas Zimmermann
> Graphics Driver Developer
> SUSE Software Solutions Germany GmbH
> Frankenstrasse 146, 90461 Nuernberg, Germany
> GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
> HRB 36809 (AG Nuernberg)
>