From: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
To: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org
Cc: megous@megous.com, chunkuang.hu@kernel.org,
jernej.skrabec@siol.net, drinkcat@chromium.org,
dafna.hirschfeld@collabora.com, jonas@kwiboo.se,
airlied@linux.ie, dafna3@gmail.com, linux-usb@vger.kernel.org,
narmstrong@baylibre.com, a.hajda@samsung.com, robh+dt@kernel.org,
Laurent.pinchart@ideasonboard.com, hsinyi@chromium.org,
enric.balletbo@collabora.com, kernel@collabora.com
Subject: [PATCH v6 0/2] Add support for ANX7688
Date: Fri, 9 Apr 2021 18:19:49 +0200 [thread overview]
Message-ID: <20210409161951.12365-1-dafna.hirschfeld@collabora.com> (raw)
ANX7688 is a typec port controller that also converts HDMI to DP.
ANX7688 is found on Acer Chromebook R13 (elm) and on Pine64 PinePhone.
On Acer Chromebook R13 (elm), the device is powered-up and controller by the
Embedded Controller. Therefore its operation is transparent
to the SoC. It is used in elm only as a display bridge driver.
The bridge driver only reads some values using i2c and use them to
implement the mode_fixup cb.
On v5 we added the full dt-binding of the generic Analogix anx7688 device.
The problem is that for elm, most of the fields are not needed since
the anx7688 sits behind the EC. After a discussion on v5 (see [1])
we decided to go back to the original approach and send the dt binding
as specific to the elm. So in this version we rename the device to cros_ec_anx7688
and use the compatible 'google,cros-ec-anx7688'.
[1] https://patchwork.kernel.org/project/dri-devel/patch/20210305124351.15079-3-dafna.hirschfeld@collabora.com/
Changes since v5:
* treat the device as a specific combination of an ANX7688 behind the EC and
call it 'cros-ec-anx7688'
Changes since v4:
In v4 of this set, the device was added as an 'mfd' device
and an additional 'bridge' device for the HDMI-DP conversion, see [2].
[2] https://lkml.org/lkml/2020/3/18/64
Dafna Hirschfeld (1):
dt-bindings: display: add google,cros-ec-anx7688.yaml
Enric Balletbo i Serra (1):
drm/bridge: Add ChromeOS EC ANX7688 bridge driver support
.../bridge/google,cros-ec-anx7688.yaml | 82 ++++++++
drivers/gpu/drm/bridge/Kconfig | 12 ++
drivers/gpu/drm/bridge/Makefile | 1 +
drivers/gpu/drm/bridge/cros-ec-anx7688.c | 191 ++++++++++++++++++
4 files changed, 286 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/bridge/google,cros-ec-anx7688.yaml
create mode 100644 drivers/gpu/drm/bridge/cros-ec-anx7688.c
--
2.17.1
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next reply other threads:[~2021-04-09 16:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-09 16:19 Dafna Hirschfeld [this message]
2021-04-09 16:19 ` [PATCH v6 1/2] dt-bindings: display: add google,cros-ec-anx7688.yaml Dafna Hirschfeld
2021-04-12 18:24 ` Rob Herring
2021-04-09 16:19 ` [PATCH v6 2/2] drm/bridge: Add ChromeOS EC ANX7688 bridge driver support Dafna Hirschfeld
2021-04-28 12:01 ` [PATCH v6 0/2] Add support for ANX7688 Dafna Hirschfeld
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