Re: [PATCH 4/5] ARM: dts: sun5i: q8-tablet: Add LCD Panel power supply
From: Maxime Ripard
Date: Mon Jan 28 2019 - 05:53:22 EST
On Sun, Jan 27, 2019 at 10:48:37PM +0800, Chen-Yu Tsai wrote:
> The A13 Q8 tablet, following the A13 reference tablet design, has the
> system's fixed 3.3V rail feed the VCC supply of the LCD panel.
> Additional voltage rails used by the panel are generated using a
> regulator fed from the unregulated IPSOUT output of the PMIC. The latter
> is unrepresentable in the device tree. Both are controlled with MOSFETs
> by the enable GPIO added in the previous patch. The actual enable or
> reset pin for the panel is tied directly to LCD-VCC after the MOSFET.
> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
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