linux-kernel - [PATCH v2 0/2] Revert vendor property from anx7625 bindings

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Date:   Tue,  8 Mar 2022 10:49:09 +0100
From:   Robert Foss <robert.foss@...aro.org>
To:     airlied@...ux.ie, daniel@...ll.ch, robh+dt@...nel.org,
        matthias.bgg@...il.com, robert.foss@...aro.org,
        laurent.pinchart@...asonboard.com, xji@...logixsemi.com,
        hsinyi@...omium.org, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Chen-Yu Tsai <wenst@...omium.org>, arnd@...db.de
Subject: [PATCH v2 0/2] Revert vendor property from anx7625 bindings

An issue[1] related to how the V4L2_FWNODE_BUS_TYPE_PARALLEL flag is mis-used
was found in recent addition to the anx7625 driver.

As used currently CPI (camera parallel interface) and DPI
(display parallel interface) would share the
V4L2_FWNODE_BUS_TYPE_PARALLEL enum. I think that would be perfectly
functional, but it is not what V4L2_FWNODE_BUS_TYPE_PARALLEL is
documented to represent. As far as I can see it's only intended to
represent CPI.

Instead of having V4L2_FWNODE_BUS_TYPE_PARALLEL represent two
standards, I think they should be split. And possibly
V4L2_FWNODE_BUS_TYPE_PARALLEL should be renamed for CPI, but that is a
separate story. This would provide for the neatest and most legible
solution. If this solution is implemented, this range would be
incorrect. Additionally the snippet reverted in 2/2 of this series
would no longer be valid.

As it stands V4L2_FWNODE_BUS_TYPE_PARALLEL was used to represent DPI
due to not being caught in the review process.

In order to not introduce this issue into the ABI, let's revert the changes
to the anx7625 dt-binding related to this.

[1] https://lore.kernel.org/all/YiTruiCIkyxs3jTC@pendragon.ideasonboard.com/

Robert Foss (2):
  dt-bindings: drm/bridge: anx7625: Revert DPI support
  Revert "arm64: dts: mt8183: jacuzzi: Fix bus properties in anx's DSI
    endpoint"

 .../display/bridge/analogix,anx7625.yaml      | 19 +------------------
 .../dts/mediatek/mt8183-kukui-jacuzzi.dtsi    |  2 --
 2 files changed, 1 insertion(+), 20 deletions(-)

-- 
2.32.0