linux-kernel - Re: [PATCH v2 3/7] drm: rockchip: vop: add rk3066 vop definitions

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Date:   Sun, 30 Dec 2018 18:22:00 +0100
From:   Heiko Stuebner <heiko@...ech.de>
To:     Johan Jonker <jbx6244@...il.com>
Cc:     hjc@...k-chips.com, airlied@...ux.ie, robh+dt@...nel.org,
        mark.rutland@....com, mturquette@...libre.com, sboyd@...nel.org,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: Re: [PATCH v2 3/7] drm: rockchip: vop: add rk3066 vop definitions

Hi Johan,

Am Samstag, 29. Dezember 2018, 14:33:14 CET schrieb Johan Jonker:
> From: Mark Yao <mark.yao@...k-chips.com>
> 
> This patch adds the rk3066 VOP definitions.
> 
> The VOP or LCD Controller serves as interface between
> framebuffer memory and a display device (LCD panel or TV set).
> 
> This SOC has two symmetrical LCDC's for a dual panel application.
> 
> A LCDC has 5 display layers.
> Only 3 are used here.
> 
> - Video layer 0 (Win0)
> - Video layer 1 (Win1)
> - OSD layer     (Win2)

Patch itself looks good, we'll need to wait a bit to give Rob a chance
to look at the (simple) dt-binding change and I'll drop the paragraph
about the display layers when applying.

Looking at the rk3066-manual, the lcdcs really only have 3 fully usable
layers + the special cursor layer which is right now not really usable in
a drm context, so the above paragraph is misleading, so I'll just drop it.

Heiko


> Win0 and Win1 are exchangeable.
> Maximum resolution is 1920x1080.
> 
> The LCDC0 output is connected to:
> - LCDC0 IO (without IOMUX)
> - HDMI TX video input
> 
> The LCDC1 output is connected to:
> - LCDC1 IO (with IOMUX)
> - HDMI TX video input
> 
> The HDMI TX input can switch between LCDC0 and LCDC1.
> 
> Signed-off-by: Mark Yao <mark.yao@...k-chips.com>
> Signed-off-by: Johan Jonker <jbx6244@...il.com>