linux-kernel - Re: [linux-sunxi] [PATCH v2 00/27] Add support for R40 HDMI pipeline

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Date:   Tue, 19 Jun 2018 02:49:31 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     jernej.skrabec@...l.net, Jagan Teki <jagan@...rulasolutions.com>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        David Airlie <airlied@...ux.ie>, gustavo@...ovan.org,
        maarten.lankhorst@...ux.intel.com,
        Sean Paul <seanpaul@...omium.org>,
        Mark Rutland <mark.rutland@....com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [linux-sunxi] [PATCH v2 00/27] Add support for R40 HDMI pipeline

在 2018-06-18一的 16:43 +0200，Jernej Škrabec写道：
> Dne ponedeljek, 18. junij 2018 ob 14:58:02 CEST je Jagan Teki
> napisal(a):
> > On Thu, Jun 14, 2018 at 10:59 PM, Jernej Škrabec
> > 
> > <jernej.skrabec@...l.net> wrote:
> > > Dne četrtek, 14. junij 2018 ob 19:16:46 CEST je Jagan Teki
> > > napisal(a):
> > > > On Thu, Jun 14, 2018 at 8:04 PM, Jernej Škrabec <jernej.skrabec
> > > > @siol.net>
> > > 
> > > wrote:
> > > > > Dne četrtek, 14. junij 2018 ob 09:12:41 CEST je Jagan Teki
> > > > > napisal(a):
> > > > > > On Wed, Jun 13, 2018 at 1:30 AM, Jernej Skrabec
> > > > > > <jernej.skrabec@...l.net>
> > > > > 
> > > > > wrote:
> > > > > > > This series adds support for R40 HDMI pipeline. It is a
> > > > > > > bit special
> > > > > > > than other already supported pipelines because it has
> > > > > > > additional
> > > > > > > unit
> > > > > > > called TCON TOP responsible for relationship
> > > > > > > configuration between
> > > > > > > mixers, TCONs and HDMI. Additionally, it has additional
> > > > > > > gates for
> > > > > > > DSI
> > > > > > > and TV TCONs, TV encoder clock settings and pin muxing
> > > > > > > between LCD
> > > > > > > and TV encoders.
> > > > > > > 
> > > > > > > However, it seems that TCON TOP will become a norm, since
> > > > > > > newer
> > > > > > > Allwinner SoCs like H6 also have this unit.
> > > > > > > 
> > > > > > > I tested different possible configurations:
> > > > > > > - mixer0 <> TCON-TV0 <> HDMI
> > > > > > > - mixer0 <> TCON-TV1 <> HDMI
> > > > > > > - mixer1 <> TCON-TV0 <> HDMI
> > > > > > > - mixer1 <> TCON-TV1 <> HDMI
> > > > > > > 
> > > > > > > Please review.
> > > > > > > 
> > > > > > > Best regards,
> > > > > > > Jernej
> > > > > > > 
> > > > > > > Changes from v1:
> > > > > > > - Split DT bindings patch and updated description
> > > > > > > - Split HDMI PHY patch
> > > > > > > - Move header file from TCON TOP patch to dt bindings
> > > > > > > patch
> > > > > > > - Added Rob reviewed-by tag
> > > > > > > - Used clk_hw_register_gate() instead of custom gate
> > > > > > > registration
> > > > > > > code
> > > > > > > - Reworked TCON TOP to be part of of-graph. Because of
> > > > > > > that, a lot
> > > > > > > of
> > > > > > > 
> > > > > > >   new patches were added.
> > > > > > > 
> > > > > > > - Droped mixer index quirk patch
> > > > > > > - Reworked TCON support for TCON TOP
> > > > > > > - Updated commit messages
> > > > > > > 
> > > > > > > Jernej Skrabec (27):
> > > > > > >   clk: sunxi-ng: r40: Add minimal rate for video PLLs
> > > > > > >   clk: sunxi-ng: r40: Allow setting parent rate to
> > > > > > > display related
> > > > > > >   
> > > > > > >     clocks
> > > > > > >   
> > > > > > >   clk: sunxi-ng: r40: Export video PLLs
> > > > > > >   dt-bindings: display: sunxi-drm: Add TCON TOP
> > > > > > > description
> > > > > > >   drm/sun4i: Add TCON TOP driver
> > > > > > >   drm/sun4i: Fix releasing node when enumerating enpoints
> > > > > > >   drm/sun4i: Split out code for enumerating endpoints in
> > > > > > > output port
> > > > > > >   drm/sun4i: Add support for traversing graph with TCON
> > > > > > > TOP
> > > > > > >   drm/sun4i: Don't skip TCONs if they don't have channel
> > > > > > > 0
> > > > > > >   dt-bindings: display: sun4i-drm: Add R40 TV TCON
> > > > > > > description
> > > > > > >   drm/sun4i: tcon: Add support for tcon-top gate
> > > > > > >   drm/sun4i: tcon: Generalize engine search algorithm
> > > > > > >   drm/sun4i: Don't check for LVDS and RGB when TCON has
> > > > > > > only ch1
> > > > > > >   drm/sun4i: Don't check for panel or bridge on TV TCONs
> > > > > > >   drm/sun4i: Add support for R40 TV TCON
> > > > > > >   dt-bindings: display: sun4i-drm: Add R40 mixer
> > > > > > > compatibles
> > > > > > >   drm/sun4i: Add support for R40 mixers
> > > > > > >   dt-bindings: display: sun4i-drm: Add description of A64
> > > > > > > HDMI PHY
> > > > > > >   drm/sun4i: Enable DW HDMI PHY clock
> > > > > > >   drm/sun4i: Don't change clock bits in DW HDMI PHY
> > > > > > > driver
> > > > > > >   drm/sun4i: DW HDMI PHY: Add support for second PLL
> > > > > > >   drm/sun4i: Add support for second clock parent to DW
> > > > > > > HDMI PHY clk
> > > > > > >   
> > > > > > >     driver
> > > > > > >   
> > > > > > >   drm/sun4i: Add support for A64 HDMI PHY
> > > > > > >   drm: of: Export drm_crtc_port_mask()
> > > > > > >   drm/sun4i: DW HDMI: Expand algorithm for possible crtcs
> > > > > > >   ARM: dts: sun8i: r40: Add HDMI pipeline
> > > > > > >   ARM: dts: sun8i: r40: Enable HDMI output on BananaPi M2
> > > > > > > Ultra
> > > > > > 
> > > > > > Tested whole series on top of linux-next.
> > > > > > 
> > > > > > Tested-by: Jagan Teki <jagan@...rulasolutions.com>
> > > > > 
> > > > > Thanks!
> > > > 
> > > > I've V40 board, which is same as R40. I'm able to detect the
> > > > HDMI but
> > > > seems edid not detecting properly.
> > > > 
> > > > [    0.983007] sun4i-drm display-engine: bound 1100000.mixer
> > > > (ops
> > > > 0xc074a80c) [    0.999043] sun4i-drm display-engine: bound
> > > > 1200000.mixer
> > > > (ops 0xc074a80c) [    1.006229] sun4i-drm display-engine: bound
> > > > 1c70000.tcon-top (ops 0xc074e2ac) [    1.013609] sun4i-drm
> > > > display-engine:
> > > > bound 1c73000.lcd-controller (ops 0xc0747a28)
> > > > [    1.053988] sun8i-dw-hdmi 1ee0000.hdmi: Detected HDMI TX
> > > > controller
> > > > v1.32a with HDCP (sun8i_dw_hdmi_phy)
> > > > [    1.063913] sun8i-dw-hdmi 1ee0000.hdmi: registered
> > > > DesignWare HDMI
> > > > I2C bus driver
> > > > [    1.071683] sun4i-drm display-engine: bound 1ee0000.hdmi
> > > > (ops
> > > > 0xc074a298) [    1.078484] [drm] Supports vblank timestamp
> > > > caching Rev 2
> > > > (21.10.2013). [    1.085098] [drm] No driver support for vblank
> > > > timestamp query. [ 1.091055] [drm] Cannot find any crtc or
> > > > sizes
> > > > [    1.095995] [drm] Initialized sun4i-drm 1.0.0 20150629 for
> > > > display-engine on minor 0
> > > 
> > > This seems like DT issue. Can you post somewhere your V40 DTSI
> > > (if it is
> > > different to R40) and board DTS?
> > 
> > same dtsi shared between r40 and v40, here is board dts support for
> > HDMI[1]
> > 
> > [1] https://paste.ubuntu.com/p/wqVz38BHrM/
> 
> This patch looks like exactly the same as mine for BananaPi M2U, so
> there 
> should be no issues.

As I know, M2B is designed to be compatible with M2U, so most things
should be the same. The stock firmware even use the same images for
both M2U and M2B.

> 
> What about VCC-HDMI? Is powered? Can you measure it to check?
> 
> Best regards,
> Jernej
> 
> 
>