linux-kernel - Re: [PATCH v3 00/18] arm64: allwinner: Add A64 DE2 HDMI support

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Date:   Mon, 23 Jul 2018 14:32:43 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     Jagan Teki <jagannadh.teki@...il.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>
Cc:     Jagan Teki <jagan@...rulasolutions.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org,
        Michael Trimarchi <michael@...rulasolutions.com>,
        linux-arm-kernel@...ts.infradead.org,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel@...r.kernel.org,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH v3 00/18] arm64: allwinner: Add A64 DE2 HDMI support

在 2018-07-18三的 18:26 +0530，Jagan Teki写道：
> On Wed, Jul 18, 2018 at 6:14 PM, Maxime Ripard
> <maxime.ripard@...tlin.com> wrote:
> > On Wed, Jul 18, 2018 at 04:24:40PM +0530, Jagan Teki wrote:
> > > Allwinner A64 has display engine pipeline like other Allwinner
> > > SOC's A83T/H3/H5.
> > > 
> > > A64 behaviour similar to Allwinner A83T where
> > > Mixer0 => TCON0 => LVDS/RGB/MIPI-DSI
> > > Mixer1 => TCON1 => HDMI
> > > as per Display System Block Diagram from
> > > Allwinner_A64_User_Manual_V1.1.pdf
> > > 
> > > This is third patch-set followed with previous RFC[1], first and
> > > second
> > > series[2][3] and merely concentrated on HDMI pipeline through
> > > TCON1 and
> > > rest will add eventually.
> > > 
> > > This series fixed previous version comments
> > > - Rebasing on linux-next
> > > - sqash all pipeline components in one patch
> > > - Enable all pipeline components in board dts
> > > - about documenting fallback compatibles
> > > - adding new compatible for mixer1
> > 
> > You still haven't figured out the SRAM parts. We asked you to fix
> > this
> > in the v1 and the v2 already, and we're not going to merge this
> > without those bits figured out properly.
> 
> Sorry I'm not sure what I'm trying to do on SRAM here because the
> last
> mail, I have waited for Icenowy changes about simple_fb with sram_c
> on
> ccu node and those are merged. can you elaborate please.

Would you mind me advance the patchset a bit and send a PATCH v3.1?

I won't finally take the maintainership of the patchset.

> 
> > 
> > > Log:
> > > [    1.450984] Jagan: sun8i_mixer_probe
> > > [    1.464981] sun4i-drm display-engine: bound 1200000.mixer (ops
> > > sun8i_mixer_ops)
> > > [    1.472572] sun4i-drm display-engine: bound 1c0d000.lcd-
> > > controller (ops sun4i_tcon_ops)
> > > [    1.480676] sun8i-dw-hdmi 1ee0000.hdmi: Linked as a consumer
> > > to regulator.10
> > > [    1.488738] sun8i-dw-hdmi 1ee0000.hdmi: Detected HDMI TX
> > > controller v1.32a with HDCP (sun8i_dw_hdmi_phy)
> > > [    1.498879] sun8i-dw-hdmi 1ee0000.hdmi: registered DesignWare
> > > HDMI I2C bus driver
> > > [    1.507372] sun4i-drm display-engine: bound 1ee0000.hdmi (ops
> > > sun8i_dw_hdmi_ops)
> > > [    1.514778] [drm] Supports vblank timestamp caching Rev 2
> > > (21.10.2013).
> > > [    1.521398] [drm] No driver support for vblank timestamp
> > > query.
> > > [    1.684611] random: fast init done
> > > [    2.011575] Console: switching to colour frame buffer device
> > > 180x56
> > > [    2.049858] sun4i-drm display-engine: fb0: DRM emulated frame
> > > buffer device
> > > [    2.057268] [drm] Initialized sun4i-drm 1.0.0 20150629 for
> > > display-engine on minor 0
> > > 
> > > Note:
> > > Pine64 boards are unable to get edid by default like other A64
> > > boards,
> > > but forcing 'video=HDMI-A-1:1920x1080@...' kernel command line
> > > can
> > > create edid with display on penel
> > 
> > Then that needs to be figured out before it's enabled, instead of
> > having a hack that barely works.
> 
> Any suggestion to work.