linux-kernel - Re: [PATCH 0/6] Support for LEGO MINDSTORMS EV3 LCD display

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Message-ID: <959f607c-f2ee-51d8-db39-1ef91859f22f@lechnology.com>
Date:   Thu, 3 Aug 2017 20:16:54 -0500
From:   David Lechner <david@...hnology.com>
To:     Noralf Trønnes <noralf@...nnes.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     dri-devel@...ts.freedesktop.org,
        devicetree <devicetree@...r.kernel.org>,
        David Airlie <airlied@...ux.ie>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>, linux-fbdev@...r.kernel.org,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH 0/6] Support for LEGO MINDSTORMS EV3 LCD display

On 08/03/2017 08:08 PM, David Lechner wrote:
> On 08/03/2017 03:11 PM, Noralf Trønnes wrote:
>>
>> Den 03.08.2017 19.11, skrev Andy Shevchenko:
>>> On Thu, Aug 3, 2017 at 8:09 PM, Andy Shevchenko
>>> <andy.shevchenko@...il.com> wrote:
>>>> On Thu, Aug 3, 2017 at 6:18 PM, David Lechner <david@...hnology.com> 
>>>> wrote:
>>>>
>>>>> The particular display I have is this one:
>>>>> http://wiki.seeed.cc/Grove-OLED_Display_1.12inch/
>>>>>
>>>>> It looks like it uses a command/data scheme like the MIPI displays, 
>>>>> but
>>>>> doesn't use any of the standard values for the commands. The 
>>>>> controller can
>>>>> do parallel, SPI and I2C, but the display I have is wired for I2C.
>>>> It looks very similar to ssd1306. Some description refers to ssd1308.
>>> http://www.mouser.com/catalog/specsheets/Seeed_104030008.pdf
>>>
>>
>> That pdf refers to another one: 
>> http://wiki.seeed.cc/Grove-OLED_Display_0.96inch/
>> There's an fbdev driver that supports ssd1305, ssd1306, ssd1307 and 
>> ssd1309:
>> https://www.kernel.org/doc/Documentation/devicetree/bindings/display/ssd1307fb.txt 
>>
>> http://elixir.free-electrons.com/linux/latest/source/drivers/video/fbdev/ssd1307fb.c 
>>
>> Maybe the ssd1308 will work with that driver...
>>
> 
> The display I have uses a ssd1327 controller. It is 16-bit grayscale. 
> The ssd130x are all 1-bit monochrome. So, probably more like the ssd1325 
> driver in fbftf.

correction, 4-bit grayscale