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From: Pavel Machek <>
To: Matthias Kaehlcke <>
Cc: Heiko Stuebner <>,
	Rob Herring <>,
	Mark Rutland <>,,,,,
	Enric Balletbo i Serra <>,
	Douglas Anderson <>
Subject: Re: [PATCH] Revert "ARM: dts: rockchip: set PWM delay backlight settings for Minnie"
Date: Sun, 16 Jun 2019 17:41:43 +0200
Message-ID: <> (raw)
In-Reply-To: <>


> This reverts commit 288ceb85b505c19abe1895df068dda5ed20cf482.
> According to the commit message the AUO B101EAN01 panel on minnie
> requires a PWM delay of 200 ms, however this is not what the
> datasheet says. The datasheet mentions a *max* delay of 200 ms
> for T2 ("delay from LCDVDD to black video generation") and T3
> ("delay from LCDVDD to HPD high"), which aren't related to the
> PWM. The backlight power sequence does not specify min/max
> constraints for T15 (time from PWM on to BL enable) or T16
> (time from BL disable to PWM off).
> Signed-off-by: Matthias Kaehlcke <>
> ---
> Enric, if you think I misinterpreted the datasheet please holler!

Was this tested? Was previous patch tested?

Does patch being reverted actually break anything? If so, cc stable?

(cesky, pictures)

  reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-14 22:45 Matthias Kaehlcke
2019-06-16 15:41 ` Pavel Machek [this message]
2019-06-17 10:08   ` Enric Balletbo i Serra
2019-06-17 16:30     ` Matthias Kaehlcke
2019-06-17 16:16   ` Matthias Kaehlcke
2019-06-18 12:02     ` Pavel Machek
2019-06-18  8:21 ` Enric Balletbo i Serra
2019-06-18 18:34   ` Matthias Kaehlcke

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