linux-kernel - Re: [PATCH AUTOSEL 4.19 16/38] drm/sun4i: Add support for D1 TCONs

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Message-ID: <YpyvdSCoVwhAcpgs@sashalap>
Date:   Sun, 5 Jun 2022 09:28:21 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Samuel Holland <samuel@...lland.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maxime Ripard <maxime@...no.tech>, mripard@...nel.org,
        wens@...e.org, airlied@...ux.ie, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH AUTOSEL 4.19 16/38] drm/sun4i: Add support for D1 TCONs

On Mon, May 30, 2022 at 09:41:59AM -0500, Samuel Holland wrote:
>Hi Sasha,
>
>On 5/30/22 8:49 AM, Sasha Levin wrote:
>> From: Samuel Holland <samuel@...lland.org>
>>
>> [ Upstream commit b9b52d2f4aafa2bd637ace0f24615bdad8e49f01 ]
>>
>> D1 has a TCON TOP, so its quirks are similar to those for the R40 TCONs.
>> While there are some register changes, the part of the TCON TV supported
>> by the driver matches the R40 quirks, so that quirks structure can be
>> reused. D1 has the first supported TCON LCD with a TCON TOP, so the TCON
>> LCD needs a new quirks structure.
>>
>> D1's TCON LCD hardware supports LVDS; in fact it provides dual-link LVDS
>> from a single TCON. However, it comes with a brand new LVDS PHY. Since
>> this PHY has not been tested, leave out LVDS driver support for now.
>>
>> Signed-off-by: Samuel Holland <samuel@...lland.org>
>> Reviewed-by: Jernej Skrabec <jernej.skrabec@...il.com>
>> Signed-off-by: Maxime Ripard <maxime@...no.tech>
>> Link: https://patchwork.freedesktop.org/patch/msgid/20220424162633.12369-14-samuel@sholland.org
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>
>This patch adds support for hardware in a SoC that will not boot on earlier
>kernel releases, so there is no benefit to backporting the patch (to any
>previous release).

Dropped, thanks!

-- 
Thanks,
Sasha