Re: [PATCH] drm/panel/simple: add optronics B101XTN01.0

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On Thu, Aug 7, 2014 at 3:33 AM, Thierry Reding <thierry.reding@xxxxxxxxx> wrote:
> On Wed, Aug 06, 2014 at 04:31:30PM -0400, Rob Clark wrote:
>> LVDS panel, make/model described as:
>>
>> AU Optronics Corporation - B101XTN01.0 (H/W:0A)
>>
>> See:
>> http://www.encore-electronic.com/media/B101XTN01.0.pdf
>
> I've made it a custom to mention which board a panel is used on in the
> commit message and I've requested others to do the same. The idea was
> that it would give some kind of indication where to find the hardware if
> somebody wanted to test or look at for reference.

It's just a free-standing panel, which (in this case) can be plugged
to an ifc6410 (and I think various other inforce boards..) looks like
a standard(ish) 41 pin connector.

>>
>> Signed-off-by: Rob Clark <robdclark@xxxxxxxxx>
>> ---
>>  drivers/gpu/drm/panel/panel-simple.c | 27 +++++++++++++++++++++++++++
>>  1 file changed, 27 insertions(+)
>
> This is missing device tree binding documentation.

there is nothing new, so I assume you just mean adding the compatible
string to a list?

>>
>> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
>> index a251361..16119ba 100644
>> --- a/drivers/gpu/drm/panel/panel-simple.c
>> +++ b/drivers/gpu/drm/panel/panel-simple.c
>> @@ -447,6 +447,29 @@ static const struct panel_desc samsung_ltn101nt05 = {
>>       },
>>  };
>>
>> +static const struct drm_display_mode optronics_lvds_mode = {
>
> Can you please name this according to the model for consistency with
> other panels?
>
>> +     .clock = 72000,
>> +     .hdisplay = 1366,
>> +     .hsync_start = 1366 + 20,
>> +     .hsync_end = 1366 + 20 + 70,
>> +     .htotal = 1366 + 20 + 70,
>> +     .vdisplay = 768,
>> +     .vsync_start = 768 + 14,
>> +     .vsync_end = 768 + 14 + 42,
>> +     .vtotal = 768 + 14 + 42,
>> +     .vrefresh = 60,
>> +     .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
>> +};
>> +
>> +static const struct panel_desc optronics_lvds = {
>> +     .modes = &optronics_lvds_mode,
>> +     .num_modes = 1,
>> +     .size = {
>> +             .width = 1366,
>> +             .height = 768,
>
> This needs to be the physical dimension in mm.
>
>> +     },
>> +};
>
> There's now also a new field called .bpc which contains the number of
> bits per color (usually 6 or 8). Can you provide that as well? According
> to the datasheet you linked to it should be 6.

well, that was a follow-on question I had as soon as I find a
different 8bpc panel.. but ok, nice that this was added.

>> +
>>  static const struct of_device_id platform_of_match[] = {
>>       {
>>               .compatible = "auo,b101aw03",
>> @@ -476,6 +499,10 @@ static const struct of_device_id platform_of_match[] = {
>>               .compatible = "samsung,ltn101nt05",
>>               .data = &samsung_ltn101nt05,
>>       }, {
>> +             .compatible = "optronics,b101xtn01",
>
> From the commit message this panel is from AU Optronics, so it should
> use the auo vendor prefix.

so, "auo,b101xtn01" works for everyone?

BR,
-R

> Thierry
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