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SubjectRe: [PATCH v5.1 0/6] drm: bridge: dw-hdmi: Add support for Custom PHYs
From
Date
Hi,

On 03/31/2017 07:55 PM, Neil Armstrong wrote:
> The Amlogic GX SoCs implements a Synopsys DesignWare HDMI TX Controller
> in combination with a very custom PHY.
>
> Thanks to Laurent Pinchart's changes, the HW report the following :
> Detected HDMI TX controller v2.01a with HDCP (meson_dw_hdmi_phy)
>
> The following differs from common PHY integration as managed in the current
> driver :
> - Amlogic PHY is not configured through the internal I2C link
> - Amlogic PHY do not use the ENTMDS, SVSRET, PDDQ, ... signals from the controller
> - Amlogic PHY do not export HPD ands RxSense signals to the controller
>
> And finally, concerning the controller integration :
> - the Controller registers are not flat memory-mapped, and uses an
> addr+read/write register pair to write all registers.
> - Inputs only YUV444 pixel data
>
> Most of these uses case are implemented in Laurent Pinchart v5.1 patchset merged
> in drm-misc-next branch.
>
> This is why the following patchset implements :
> - Configure the Input format from the plat_data
> - Add PHY callback to handle HPD and RxSense out of the dw-hdmi driver
>
> To implement the input format handling, the Synopsys HDMIT TX Controller input
> V4L bus formats are used and missing formats + documentation are added.
>
> This patchset makes the Amlogic GX SoCs HDMI output successfully work, and is
> also tested on the RK3288 ACT8846 EVB Board.

Please feel free to add my Reviewed-by for all the patches.

Did we get an Ack from the v4l maintainers to take the media
changes via the drm-misc branch? If so, I guess we could go ahead
and push the series to drm-misc-next.

Thanks,
Archit

>
> Changes since v5 at [6] :
> - Small addition in V4L YUV bus formats documentation
>
> Changes since v4 at [5] :
> - Rebased on drm-misc-next at bd283d2f66c2
> - Fix 4:2:0 bus formats naming
> - Renamed function fd_registered to i2c_init in dw-hdmi.c
>
> Changes since v3 at [4] :
> - Fix 4:2:0 bus formats naming
> - Add separate 36bit and 48bit tables for bus formats documentation
> - Added 4:2:0 bus config in hdmi_video_sample
> - Moved dw_hdmi documentation in a "bridge" subdir
> - Rebase on drm-misc-next at 62c58af32c93
>
> Changes since v2 at [3] :
> - Rebase on laurent patch "Extract PHY interrupt setup to a function"
> - Reduce phy operations
> - Switch the V4L bus formats and encodings instead of custom enum
>
> Changes since v1 at [2] :
> - Drop patches submitted by laurent
>
> Changes since RFC at [1] :
> - Regmap fixup for 4bytes register access, tested on RK3288 SoC
> - Move phy callbacks to phy_ops and move Synopsys PHY calls into default ops
> - Move HDMI link data into shared header
> - Move Pixel Encoding enum to shared header
>
> [1] http://lkml.kernel.org/r/1484656294-6140-1-git-send-email-narmstrong@baylibre.com
> [2] http://lkml.kernel.org/r/1485774318-21916-1-git-send-email-narmstrong@baylibre.com
> [3] http://lkml.kernel.org/r/1488468572-31971-1-git-send-email-narmstrong@baylibre.com
> [4] http://lkml.kernel.org/r/1488904944-14285-1-git-send-email-narmstrong@baylibre.com
> [5] http://lkml.kernel.org/r/1490109161-20529-1-git-send-email-narmstrong@baylibre.com
> [6] http://lkml.kernel.org/r/1490864675-17336-1-git-send-email-narmstrong@baylibre.com
>
> Laurent Pinchart (1):
> drm: bridge: dw-hdmi: Extract PHY interrupt setup to a function
>
> Neil Armstrong (5):
> media: uapi: Add RGB and YUV bus formats for Synopsys HDMI TX
> Controller
> documentation: media: Add documentation for new RGB and YUV bus
> formats
> drm: bridge: dw-hdmi: Switch to V4L bus format and encodings
> drm: bridge: dw-hdmi: Add Documentation on supported input formats
> drm: bridge: dw-hdmi: Move HPD handling to PHY operations
>
> Documentation/gpu/bridge/dw-hdmi.rst | 15 +
> Documentation/gpu/index.rst | 1 +
> Documentation/media/uapi/v4l/subdev-formats.rst | 874 +++++++++++++++++++++++-
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 470 ++++++++-----
> include/drm/bridge/dw_hdmi.h | 68 ++
> include/uapi/linux/media-bus-format.h | 13 +-
> 6 files changed, 1268 insertions(+), 173 deletions(-)
> create mode 100644 Documentation/gpu/bridge/dw-hdmi.rst
>

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