linux-kernel - Re: [linux-sunxi] [PATCH 14/15] ARM: dts: sun8i: h3: Enable HDMI output on H3 boards

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Date:   Sun, 25 Feb 2018 20:06:32 +1100
From:   Julian Calaby <julian.calaby@...il.com>
To:     Icenowy Zheng <icenowy@...c.io>
Cc:     "Mailing List, Arm" <linux-arm-kernel@...ts.infradead.org>,
        jernej.skrabec@...l.net, Mark Rutland <mark.rutland@....com>,
        devicetree <devicetree@...r.kernel.org>,
        David Airlie <airlied@...ux.ie>,
        Michael Turquette <mturquette@...libre.com>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>, sboyd@...nel.org,
        Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        "open list:COMMON CLK FRAMEWORK" <linux-clk@...r.kernel.org>
Subject: Re: [linux-sunxi] [PATCH 14/15] ARM: dts: sun8i: h3: Enable HDMI
 output on H3 boards

Hi Icenowy,

On Sun, Feb 25, 2018 at 7:43 PM, Icenowy Zheng <icenowy@...c.io> wrote:
>
>
> 于 2018年2月25日 GMT+08:00 下午4:11:34, Julian Calaby <julian.calaby@...il.com> 写到:
>>Hi Jernej,
>>
>>On Sun, Feb 25, 2018 at 8:45 AM, Jernej Skrabec
>><jernej.skrabec@...l.net> wrote:
>>> Enable HDMI output on all boards which have HDMI connector.
>>>
>>> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
>>> ---
>>>  arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dts    | 25
>>++++++++++++++++++++++
>>>  arch/arm/boot/dts/sun8i-h3-beelink-x2.dts          | 25
>>++++++++++++++++++++++
>>>  arch/arm/boot/dts/sun8i-h3-libretech-all-h3-cc.dts | 25
>>++++++++++++++++++++++
>>>  arch/arm/boot/dts/sun8i-h3-nanopi-m1.dts           | 25
>>++++++++++++++++++++++
>>>  arch/arm/boot/dts/sun8i-h3-orangepi-2.dts          | 25
>>++++++++++++++++++++++
>>>  arch/arm/boot/dts/sun8i-h3-orangepi-lite.dts       | 25
>>++++++++++++++++++++++
>>>  arch/arm/boot/dts/sun8i-h3-orangepi-one.dts        | 24
>>+++++++++++++++++++++
>>>  arch/arm/boot/dts/sun8i-h3-orangepi-pc.dts         | 25
>>++++++++++++++++++++++
>>>  8 files changed, 199 insertions(+)
>>
>>As I understand it, the H2+ is just a slightly trimmed down H3. In
>>terms of HDMI support, the difference is that the H2+ can't output 4k.
>
> H2+ can OUTPUT 4K. The BSP restricts it to DECODE 4K. (And mainline won't have such restriction)

Interesting!

I'm getting my data from here: http://linux-sunxi.org/H3#Variants

So essentially what you're saying is that the H2+ is just a H3 with
less pins? (I'm assuming the "lack of gigabit mac" is effectively it
not having the required pins, i.e. GPIO bank D)

Thanks,

-- 
Julian Calaby

Email: julian.calaby@...il.com
Profile: http://www.google.com/profiles/julian.calaby/