linux-kernel - Re: [PATCH v4 6/7] ARM: dts: rockchip: Specify rk3288-veyron-jerry's display timings

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Date:   Fri, 29 Mar 2019 20:20:00 +0100
From:   Heiko Stübner <heiko@...ech.de>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Sean Paul <seanpaul@...omium.org>,
        linux-rockchip@...ts.infradead.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        dri-devel@...ts.freedesktop.org,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Enric Balletbò <enric.balletbo@...labora.com>,
        Rob Herring <robh+dt@...nel.org>, mka@...omium.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 6/7] ARM: dts: rockchip: Specify rk3288-veyron-jerry's display timings

Am Donnerstag, 28. März 2019, 18:17:09 CET schrieb Douglas Anderson:
> Let's document the display timings that jerry has been using out in
> the field.  This uses the standard blankings but a slightly slower
> clock rate, thus getting a refresh rate 58.3 Hz.
> 
> NOTE: this won't really do anything except cause DRM to properly
> report the refresh rate since vop_crtc_mode_fixup() was rounding the
> pixel clock to 74.25 MHz anyway.  Apparently the adjusted rate isn't
> exposed to userspace so it's important that the rate we're trying to
> achieve is mostly right.
> 
> For the downstream kernel change related to this see See
> https://crrev.com/c/324558.
> 
> NOTE: minnie will be fixed up in a future patch, so for now we'll just
> delete the panel timings there.
> 
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
> 
> Changes in v4:
> - rk3288-veyron-jerry patch new for v4.
> 
> Changes in v3: None
> Changes in v2: None
> 
>  arch/arm/boot/dts/rk3288-veyron-chromebook.dtsi | 14 ++++++++++++++

hmm, the commit message explicitly mentions jerry, but this is the
general panel definition for most veyron-chromebooks (jerry, pinky, jaq,...)?

It does work on both pinky and jerry for me, so I guess just the commit
message needs a bit adapting?


Heiko