linux-kernel - Re: [PATCH] ARM: dts: imx6: skov: add pwm-regulator to control the panel's VCOM

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Message-ID: <20220619014200.GX254723@dragon>
Date:   Sun, 19 Jun 2022 09:42:00 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Ulrich Ölmann <u.oelmann@...gutronix.de>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Fabio Estevam <festevam@...il.com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Oleksij Rempel <o.rempel@...gutronix.de>,
        Juergen Borleis <jbe@...gutronix.de>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>,
        Marco Felsch <m.felsch@...gutronix.de>,
        Lucas Stach <l.stach@...gutronix.de>,
        Søren Andersen <san@...v.dk>,
        Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH] ARM: dts: imx6: skov: add pwm-regulator to control the
 panel's VCOM

On Tue, May 17, 2022 at 09:18:14AM +0200, Ulrich Ölmann wrote:
> Skov's i.MX6 based boards come in different flavors which have different panels
> attached. For optimal contrast experience each panel type needs an individual
> common voltage (VCOM) to drive its TFT backplane. The latter is generated by an
> LCD bias supply IC controlled by a pwm as input signal. Introduce a pwm-
> regulator to describe this hardware property and parameterize it appropriately
> for the different boards.
> 
> Signed-off-by: Ulrich Ölmann <u.oelmann@...gutronix.de>

Applied, thanks!