linux-kernel - [PATCH v2 0/3] drm/tiny: panel-mipi-dbi: Support separate I/O voltage supply

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Message-Id: <20221201160245.2093816-1-otto.pflueger@abscue.de>
Date:   Thu,  1 Dec 2022 17:02:42 +0100
From:   Otto Pflüger <otto.pflueger@...cue.de>
To:     Noralf Trønnes <noralf@...nnes.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Otto Pflüger <otto.pflueger@...cue.de>
Subject: [PATCH v2 0/3] drm/tiny: panel-mipi-dbi: Support separate I/O voltage supply

As stated in Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yml,
the MIPI DBI specification defines two power supplies, one for powering
the panel and one for the I/O voltage. The panel-mipi-dbi driver
currently only supports specifying a single "power-supply" in the
device tree.

Add support for a second power supply defined in a new "io-supply"
device tree property to make the driver properly configure the voltage
regulators on platforms where separate supplies are used.

Changes in v2:
 - Don't list power-supply in the properties section of
   panel-mipi-dbi-spi.yaml because it is already in panel-common.yaml

Otto Pflüger (3):
  drm/mipi-dbi: Support separate I/O regulator
  drm/tiny: panel-mipi-dbi: Read I/O supply from DT
  dt-bindings: display: panel: mipi-dbi-spi: Add io-supply

 .../bindings/display/panel/panel-mipi-dbi-spi.yaml |  8 +++++++-
 drivers/gpu/drm/drm_mipi_dbi.c                     | 14 ++++++++++++++
 drivers/gpu/drm/tiny/panel-mipi-dbi.c              |  5 +++++
 include/drm/drm_mipi_dbi.h                         |  7 ++++++-
 4 files changed, 32 insertions(+), 2 deletions(-)

-- 
2.30.2