linux-kernel - Re: [PATCH RESEND 0/2] pwm: mtk-disp: Fix backlight configuration at boot

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Message-Id: <168079104605.1968941.232523344220592816.b4-ty@gmail.com>
Date:   Thu,  6 Apr 2023 16:24:25 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     linux-arm-kernel@...ts.infradead.org, matthias.bgg@...il.com,
        linux-mediatek@...ts.infradead.org, u.kleine-koenig@...gutronix.de,
        wenst@...omium.org, kernel@...labora.com,
        linux-kernel@...r.kernel.org, jitao.shi@...iatek.com,
        weiqing.kong@...iatek.com, linux-pwm@...r.kernel.org
Subject: Re: [PATCH RESEND 0/2] pwm: mtk-disp: Fix backlight configuration at boot

On Mon, 3 Apr 2023 15:30:52 +0200, AngeloGioacchino Del Regno wrote:
> Since the pwm-mtk-disp driver was fixed to get PWM_EN state from the
> right register, an old two-wrongs-make-one-right issue emerged: as a
> result, MT8192 Asurada Spherion got no backlight at boot unless a
> suspend/resume cycle was performed.
> Also, the backlight would sometimes not get updated with the requested
> value, requiring the user to change it back and forth until it worked.
> 
> [...]

Applied, thanks!

[1/2] pwm: mtk-disp: Disable shadow registers before setting backlight values
      commit: 36dd7f530ae7d9ce9e853ffb8aa337de65c6600b
[2/2] pwm: mtk-disp: Configure double buffering before reading in .get_state()
      commit: b16c310115f2084b8826a35b77ef42bab6786d9f

Best regards,
-- 
Thierry Reding <thierry.reding@...il.com>