From: Rob Herring <robh@kernel.org>
To: "Noralf Trønnes" <noralf@tronnes.org>
Cc: maxime@cerno.tech, linux-fbdev@vger.kernel.org,
robh+dt@kernel.org, dave.stevenson@raspberrypi.com,
linux-staging@lists.linux.dev, david@lechnology.com,
devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 3/6] dt-bindings: display: sitronix,st7735r: Remove spi-max-frequency limit
Date: Wed, 1 Dec 2021 15:57:53 -0600 [thread overview]
Message-ID: <Yafv4ZJ1gDWgWDT5@robh.at.kernel.org> (raw)
In-Reply-To: <20211124150757.17929-4-noralf@tronnes.org>
On Wed, 24 Nov 2021 16:07:54 +0100, Noralf Trønnes wrote:
> The datasheet lists the minimum Serial clock cycle (Write) as 66ns which is
> 15MHz. Mostly it can do much better than that and is in fact often run at
> 32MHz. With a clever driver that runs configuration commands at a low speed
> and only the pixel data at the maximum speed the configuration can't be
> messed up by transfer errors and the speed is only limited by the amount of
> pixel glitches that one is able to tolerate.
>
> Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
> ---
> .../devicetree/bindings/display/sitronix,st7735r.yaml | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
Acked-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2021-12-01 21:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-24 15:07 [PATCH 0/6] drm/tiny/st7735r: Match up with staging/fbtft driver Noralf Trønnes
2021-11-24 15:07 ` [PATCH 1/6] dt-bindings: display: sitronix,st7735r: Fix backlight in example Noralf Trønnes
2021-12-01 21:57 ` Rob Herring
2021-12-06 8:53 ` Geert Uytterhoeven
2021-12-06 15:18 ` David Lechner
2021-11-24 15:07 ` [PATCH 2/6] dt-bindings: display: sitronix,st7735r: Make reset-gpios optional Noralf Trønnes
2021-12-01 21:57 ` Rob Herring
2021-12-06 15:18 ` David Lechner
2021-11-24 15:07 ` [PATCH 3/6] dt-bindings: display: sitronix,st7735r: Remove spi-max-frequency limit Noralf Trønnes
2021-12-01 21:57 ` Rob Herring [this message]
2021-12-06 15:19 ` David Lechner
2021-12-06 16:02 ` Noralf Trønnes
2021-11-24 15:07 ` [PATCH 4/6] dt-bindings: display: sitronix,st7735r: Add initialization properties Noralf Trønnes
2021-12-01 22:08 ` Rob Herring
2021-11-24 15:07 ` [PATCH 5/6] drm/mipi-dbi: Add device property functions Noralf Trønnes
2021-11-24 15:07 ` [PATCH 6/6] drm: tiny: st7735r: Support DT initialization of controller Noralf Trønnes
2021-11-24 22:03 ` [PATCH 0/6] drm/tiny/st7735r: Match up with staging/fbtft driver David Lechner
2021-11-25 17:21 ` Noralf Trønnes
2021-11-29 9:39 ` Maxime Ripard
2021-11-30 8:13 ` Geert Uytterhoeven
2021-11-30 9:03 ` Maxime Ripard
2021-11-30 14:30 ` Noralf Trønnes
2021-12-01 14:52 ` Maxime Ripard
2021-12-06 15:26 ` David Lechner
2021-12-06 16:04 ` Noralf Trønnes
2022-03-09 10:37 ` Noralf Trønnes
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