linux-kernel - Re: [RFC 00/13] arm64: allwinner: Add A64 DE2 pipeline support

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Message-ID: <4355590.Ql03JAEh1C@jernej-laptop>
Date:   Tue, 24 Apr 2018 17:32:54 +0200
From:   Jernej Škrabec <jernej.skrabec@...l.net>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>, Icenowy Zheng <icenowy@...c.io>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [RFC 00/13] arm64: allwinner: Add A64 DE2 pipeline support

Hi,

Dne torek, 24. april 2018 ob 15:34:12 CEST je Jagan Teki napisal(a):
> Allwinner A64 has display engine pipeline like other Allwinner SOC's
> A83T/H3/H5.
> 
> A64 DE2 behaviour similar to Allwinner A83T where mixer0, connected to tcon0
> with RGB, LVDS MIPI-DSI and mixer1, connected to tcon1 with HDMI.
> This series merely concentrated on HDMI pipeline and rest will add
> eventually.
> 
> patch 1: dt-bindings for a64 DE2 CCU
> 
> patch 2: a64 DE2 CCU node addition
> 
> patch 3: dt-bindings for a64 DE2 pipeline
> 
> patch 4 - 5: dt-bindings for a64 mixer0 and tcon-lcd
> 
> patch 6: a64 DE2 pipeline node addition
> 
> patch 7 - 8: dt-bindings for a64 HDMI and HDMI PHY
> 
> patch 9: a64 HDMI nodes addition
> 
> patch 10 - 11: dt-bindings for a64 mixer1 and tcon-tv
> 
> patch 12: a64 HDMI pipeline
> 
> patch 13: enable HDMI out on bananpi-m64
> 
> Tested HDMI on bananapi-m64 (along with DE2 SRAM C changes from [1]
> thread), able to detect the HDMI but, no penguins on screen.
> 
> Request for any suggestions.

You are mising sunxi-ng clock patches. PLL_VIDEO0 and PLL_VIDEO1 need fixes by 
setting minimum stable frequency. Please note that datasheet may have wrong 
information. That was obvious in H3 case and I had to check minimum stable 
PLL_VIDEO frequency in BSP driver.

Without clock fixes, you might not see anything on the screen.

Best regards,
Jernej

> 
> Test log on Bananpi-m64:
> [    0.247631] sun4i-drm display-engine: bound 1100000.mixer (ops
> sun8i_mixer_ops) [    0.256717] sun4i-drm display-engine: bound
> 1200000.mixer (ops sun8i_mixer_ops) [    0.256783] sun4i-tcon
> 1c0c000.lcd-controller: Missing LVDS properties, Please upgrade your DT [  
>  0.256792] sun4i-tcon 1c0c000.lcd-controller: LVDS output disabled [   
> 0.257081] sun4i-drm display-engine: No panel or bridge found... RGB output
> disabled [    0.257099] sun4i-drm display-engine: bound
> 1c0c000.lcd-controller (ops sun4i_tcon_ops) [    0.257273] sun4i-drm
> display-engine: No panel or bridge found... RGB output disabled [   
> 0.257288] sun4i-drm display-engine: bound 1c0d000.lcd-controller (ops
> sun4i_tcon_ops) [    0.258176] sun8i-dw-hdmi 1ee0000.hdmi: Detected HDMI TX
> controller v1.32a with HDCP (sun8i_dw_hdmi_p) [    0.258596] sun8i-dw-hdmi
> 1ee0000.hdmi: registered DesignWare HDMI I2C bus driver [    0.259188]
> sun4i-drm display-engine: bound 1ee0000.hdmi (ops sun8i_dw_hdmi_ops) [   
> 0.259199] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [   
> 0.259205] [drm] No driver support for vblank timestamp query. [   
> 0.259308] [drm] Cannot find any crtc or sizes
> [    0.259824] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine
> on minor 0
> 
> [1] https://lkml.org/lkml/2018/3/16/1096
> 
> Jagan Teki (13):
>   dt-bindings: clock: Add compatible for A64 DE2 CCU
>   arm64: dts: allwinner: a64: Add DE2 CCU
>   bindings: display: Add compatible for A64 DE2 pipeline
>   bindings: display: Add compatible for A64 Mixer0
>   bindings: display: Add compatible for A64 tcon-lcd
>   arm64: dts: allwinner: a64: Add DE2 pipeline
>   bindings: display: Add compatible for A64 HDMI
>   bindings: display: Add compatible for A64 HDMI PHY
>   arm64: dts: allwinner: a64: Add HDMI support
>   bindings: display: Add compatible for A64 Mixer1
>   bindings: display: Add compatible for A64 tcon-tv
>   arm64: dts: allwinner: a64: Add HDMI pipeline
>   arm64: dts: allwinner: a64: bananapi-m64: Enable HDMI output
> 
>  .../devicetree/bindings/clock/sun8i-de2.txt        |   1 +
>  .../bindings/display/sunxi/sun4i-drm.txt           |   7 +
>  .../boot/dts/allwinner/sun50i-a64-bananapi-m64.dts |  26 +++
>  arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi      | 181
> +++++++++++++++++++++ drivers/gpu/drm/sun4i/sun4i_drv.c                  | 
>  1 +
>  include/dt-bindings/clock/sun50i-a64-ccu.h         |   2 +
>  6 files changed, 218 insertions(+)
> 
> --
> 2.14.3