Re: [PATCH 0/5] R-Car D3 LVDS/HDMI support

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Ulrich,

On Tuesday, 15 May 2018 15:20:35 EEST Ulrich Hecht wrote:
> Hi!
> 
> This adds D3 support to the DU and LVDS drivers, not including LVDS PLL
> support.
> 
> It also adds LVDS encoders to the D3 device tree, and LVDS decoder, HDMI
> encoder and HDMI output connector to the Draak device tree.
> 
> In theory that should be good enough to provide HDMI output on the Draak
> board, but in practice the lack of LVDS PLL support prevents generation of
> close-enough dot clock frequencies.
> 
> This series is based on renesas-drivers-2018-05-02-v4.17-rc3 and requires
> Jacopo's "drm: bridge: Add thc63lvd1024 LVDS decoder driver" patch.

As HDMI output isn't functional yet this is difficult to test. Could you add 
support for the VGA output (using the DU DPAD) in v2 of the patch series ? VGA 
should work without LVDS PLL support as the clock frequency requirements are 
not as strict as for HDMI.

> Kieran Bingham (1):
>   arm64: dts: renesas: r8a77995: Add LVDS support
> 
> Koji Matsuoka (1):
>   drm: rcar-du: Add r8a77995 device support
> 
> Ulrich Hecht (3):
>   drm: rcar-du: lvds: Add R8A77995 support
>   arm64: dts: renesas: r8a77995-draak: add HDMI output
>   arm64: dts: renesas: r8a77995-draak: add X12 input dot clock
> 
>  arch/arm64/boot/dts/renesas/r8a77995-draak.dts | 91 +++++++++++++++++++++++
>  arch/arm64/boot/dts/renesas/r8a77995.dtsi      | 56 ++++++++++++++++
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c          | 26 ++++++++
>  drivers/gpu/drm/rcar-du/rcar_lvds.c            |  6 ++
>  4 files changed, 179 insertions(+)

-- 
Regards,

Laurent Pinchart