linux-kernel - Re: [PATCH v2 3/4] ARM: dts: imx6qdl-colibri: backlight pwm: Simplify inverted backlight

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Message-ID: <CAOMZO5AboNfb_E-4QVurZ6UTYephsOakW0QrAU8xRAMe8_zRow@mail.gmail.com>
Date:   Wed, 11 May 2022 09:06:59 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Max Krummenacher <max.oss.09@...il.com>
Cc:     Max Krummenacher <max.krummenacher@...adex.com>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/4] ARM: dts: imx6qdl-colibri: backlight pwm: Simplify
 inverted backlight

On Wed, May 11, 2022 at 8:59 AM Max Krummenacher <max.oss.09@...il.com> wrote:

>         backlight: backlight {
>                 compatible = "pwm-backlight";
> -               brightness-levels = <0 127 191 223 239 247 251 255>;
> -               default-brightness-level = <1>;
> +               brightness-levels = <0 4 8 16 32 64 128 255>;
> +               default-brightness-level = <6>;

In this patch, you are still changing the brightness levels + passing
the polarity.

I would suggest that this patch only touches the PWM polarity.

The next patch could fix the brightness levels.