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From: Ezra Buehler <ezra@easyb.ch>
To: "Robin Murphy" <robin.murphy@arm.com>,
	"Andreas Färber" <afaerber@suse.de>
Cc: linux-realtek-soc@lists.infradead.org,
	linux-leds@vger.kernel.org, linux-rtc@vger.kernel.org,
	Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	csd@princeton.com.tw, devicetree@vger.kernel.org,
	sales@fdhisi.com, Mark Brown <broonie@kernel.org>,
	linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
	Rob Herring <robh+dt@kernel.org>,
	Jacek Anaszewski <jacek.anaszewski@gmail.com>,
	Pavel Machek <pavel@ucw.cz>,
	zypeng@titanmec.com, linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, Dan Murphy <dmurphy@ti.com>,
	linux-rockchip@lists.infradead.org
Subject: Re: [RFC 00/25] arm64: realtek: Add Xnano X5 and implement TM1628/FD628/AiP1618 LED controllers
Date: Tue, 25 Feb 2020 22:42:57 +0100	[thread overview]
Message-ID: <E33E27B9-D33C-4182-A5B1-C72FA40470BC@easyb.ch> (raw)
In-Reply-To: <04e7d7cd-a8bc-621b-9205-1a058521cabe@arm.com>

Hi Robin,
Hi Andreas,

> On 13 Dec 2019, at 15:07, Robin Murphy <robin.murphy@arm.com> wrote:
> 
> I also have one of the H96 Max boxes (which I picked up out of curiosity
> for the mysterious RK3318) with an FD6551, although I've not attacked
> that one with the logic analyser yet to see how similar it is.

I have a T9 (RK3328) TV box with the same chip in it. The FD6551 uses an
I2C-like protocol. Every digit (and the symbols) have an I2C address,
but, the display does not signal ACK. AFAIK the FD650 and FD655 which
are used in other boxes (Amlogic) are very similar.

So far, I have whipped up a proof-of-cocept driver that uses i2c-gpio.
The digits seem to be rotated by 180 degrees. So, in order to use
map_to_7segment.h I had to define the BIT_SEG7_* constants differently.
My display also has multiple symbols (WIFI, network, pause, play, USB,
alarm) that are controlled by writing to the same address as for the
colon.

I’d love to work on a driver (similar to Andreas’ SPI based driver) for
these I2C connected chips.

Cheers,
Ezra.


  parent reply	other threads:[~2020-02-25 21:43 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-12  3:39 [RFC 00/25] arm64: realtek: Add Xnano X5 and implement TM1628/FD628/AiP1618 LED controllers Andreas Färber
2019-12-12  3:39 ` [RFC 01/25] dt-bindings: vendor-prefixes: Add Xnano Andreas Färber
2019-12-19 22:26   ` Rob Herring
2019-12-12  3:39 ` [RFC 02/25] dt-bindings: arm: realtek: Add Xnano X5 Andreas Färber
2019-12-19 22:27   ` Rob Herring
2019-12-12  3:39 ` [RFC 03/25] arm64: dts: realtek: rtd1295: " Andreas Färber
2019-12-12  3:39 ` [RFC 04/25] spi: gpio: Implement LSB First bitbang support Andreas Färber
2019-12-12  8:40   ` Geert Uytterhoeven
2019-12-12 15:14     ` Andreas Färber
2019-12-12 17:19       ` Mark Brown
2019-12-12 21:08         ` Andreas Färber
2019-12-13 11:42           ` Mark Brown
2019-12-12  3:39 ` [RFC 05/25] dt-bindings: vendor-prefixes: Add Titan Micro Electronics Andreas Färber
2019-12-19 22:31   ` Rob Herring
2019-12-12  3:39 ` [RFC 06/25] dt-bindings: leds: Add Titan Micro Electronics TM1628 Andreas Färber
2019-12-19 23:04   ` Rob Herring
2019-12-12  3:39 ` [RFC 07/25] " Andreas Färber
2019-12-14  9:48   ` Andreas Färber
2019-12-12  3:39 ` [RFC 08/25] arm64: dts: realtek: rtd129x-zidoo-x9s: Add TM1628 LED controller Andreas Färber
2019-12-12  3:39 ` [RFC 09/25] arm64: dts: realtek: rtd1295-zidoo-x9s: Add regular LEDs to TM1628 Andreas Färber
2019-12-12  3:39 ` [RFC 10/25] dt-bindings: vendor-prefixes: Add Fuda Hisi Microelectronics Andreas Färber
2019-12-19 23:04   ` Rob Herring
2019-12-12  3:39 ` [RFC 11/25] dt-bindings: leds: tm1628: Add Fuda Hisi Microelectronics FD628 Andreas Färber
2019-12-19 23:05   ` Rob Herring
2019-12-12  3:39 ` [RFC 12/25] " Andreas Färber
2019-12-12  3:39 ` [RFC 13/25] arm64: dts: realtek: rtd1295-xnano-x5: Add FD628 LED controller Andreas Färber
2019-12-12  3:39 ` [RFC 14/25] arm64: dts: realtek: rtd1295-xnano-x5: Add regular LEDs to FD628 Andreas Färber
2019-12-21 20:21   ` Pavel Machek
2019-12-12  3:39 ` [RFC 15/25] dt-bindings: vendor-prefixes: Add Fude Microelectronics Andreas Färber
2019-12-19 23:05   ` Rob Herring
2019-12-12  3:39 ` [RFC 16/25] dt-bindings: leds: tm1628: Add Fude Microelectronics AiP1618 Andreas Färber
2019-12-19 23:06   ` Rob Herring
2019-12-12  3:39 ` [RFC 17/25] leds: tm1628: Prepare " Andreas Färber
2019-12-21 19:55   ` Andreas Färber
2019-12-12  3:39 ` [RFC 18/25] dt-bindings: leds: tm1628: Define display child nodes Andreas Färber
2019-12-12  3:39 ` [RFC 19/25] leds: tm1628: Add 7-segment display support Andreas Färber
2019-12-12  8:33   ` Geert Uytterhoeven
2019-12-12 14:10     ` Andreas Färber
2019-12-21 20:23   ` Pavel Machek
2019-12-12  3:39 ` [RFC 20/25] arm64: dts: realtek: rtd1295-zidoo-x9s: Add display to TM1628 Andreas Färber
2019-12-12  3:39 ` [RFC 21/25] arm64: dts: realtek: rtd1295-xnano-x5: Add display to FD628 Andreas Färber
2019-12-12  3:39 ` [RFC 22/25] leds: tm1826: Add combined glyph support Andreas Färber
2019-12-21 20:27   ` Pavel Machek
2019-12-21 20:41     ` Andreas Färber
2019-12-21 21:04       ` Pavel Machek
2019-12-21 21:49         ` Andreas Färber
     [not found]           ` <CANiq72nA9OLa0SjY8W055J_2A32tcp7S98SruKSdWH2dm25VKw@mail.gmail.com>
2019-12-22  3:14             ` Andreas Färber
2020-01-15 14:31               ` Miguel Ojeda
2019-12-12  3:39 ` [RFC 23/25] WIP: leds: tm1628: Prepare TM1628 keys Andreas Färber
2019-12-12  3:39 ` [RFC 24/25] WIP: leds: tm1628: Prepare FD628 keys Andreas Färber
2019-12-12  3:39 ` [RFC 25/25] WIP: leds: tm1628: Prepare AiP1618 keys Andreas Färber
2019-12-12 13:14 ` [RFC 00/25] arm64: realtek: Add Xnano X5 and implement TM1628/FD628/AiP1618 LED controllers Robin Murphy
2019-12-12 20:55   ` Andreas Färber
2019-12-13 14:07     ` Robin Murphy
2019-12-13 14:36       ` Geert Uytterhoeven
2020-02-25 21:42       ` Ezra Buehler [this message]
2020-02-26 13:03         ` Pavel Machek
2019-12-21 18:20 ` Pavel Machek
2019-12-21 21:07   ` Andreas Färber
2020-01-15 13:34 ` Andreas Färber

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