linux-kernel - [PATCH 0/5] Add new features to nwl-dsi driver

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Date:   Fri, 28 Aug 2020 14:13:27 +0300
From:   "Robert Chiras (OSS)" <robert.chiras@....nxp.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Sam Ravnborg <sam@...nborg.org>,
        Guido Günther <agx@...xcpu.org>,
        Fabio Estevam <festevam@...il.com>,
        Ondrej Jirman <megous@...ous.com>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-imx@....com
Subject: [PATCH 0/5] Add new features to nwl-dsi driver

From: Robert Chiras <robert.chiras@....com>

This patch-set adds the new following features to the nwl-dsi bridge driver:

1. Control Video PLL from nwl-dsi driver

Add support for the Video PLL into the nwl-dsi driver, in order
to better control it's rate, depending on the requested video mode.
Controlling the Video PLL from nwl-dsi is usefull, since it both drives the DC
pixel-clock and DPHY phy_ref clock.
On i.MX8MQ, the DC can be either DCSS or LCDIF.

2. Add new property to nwl-dsi: clock-drop-level

This new property is usefull in order to use DSI panels with the nwl-dsi
driver which require a higher overhead to the pixel-clock.
For example, the Raydium RM67191 DSI Panel works with 132M pixel-clock,
but it needs an overhead in order to work properly. So, the actual pixel-clock
fed into the DSI DPI interface needs to be lower than the one used ad DSI output.
This new property addresses this matter.

3. Add support to handle both inputs for nwl-dsi: DCSS and LCDIF

Laurentiu Palcu (1):
  drm/bridge: nwl-dsi: add support for DCSS

Robert Chiras (4):
  drm/bridge: nwl-dsi: Add support for video_pll
  dt-bindings: display/bridge: nwl-dsi: Document video_pll clock
  drm/bridge: nwl-dsi: Add support for clock-drop-level
  dt-bindings: display/bridge: nwl-dsi: Document fsl,clock-drop-level
    property

 .../bindings/display/bridge/nwl-dsi.yaml           |   7 +
 drivers/gpu/drm/bridge/nwl-dsi.c                   | 338 ++++++++++++++++++++-
 2 files changed, 336 insertions(+), 9 deletions(-)

-- 
2.7.4