Hi Boris.
> >
> > Both devices are supported today by the atmel_lcdfb driver.
> > For this new set of drivers the compatible strings was
> > selected to avoid clash with the existing compatible
> > strings used for the atmel_lcdfb driver to allow them
> > to co-exist.
>
> Hm, I think Rob
Hi Sam,
On Sun, 12 Aug 2018 20:41:52 +0200
Sam Ravnborg wrote:
> New DRM based driver for at91sam9 SOC's that uses the
> Atmel LCDC IP core.
First of all, thanks for this contribution.
>
> This is first version of a patch set that adds
> drivers for the Atmel LCDC IP core.
> Posted for
On Wed, Aug 22, 2018 at 10:12 PM, Sam Ravnborg wrote:
> Hi Daniel.
>
>> > > Based on the above, would it be possible to utilise some
>> > > of these features without any dedicated userspace (mesa) support?
>> > > Any other driver that has something similar that can be used
>> > > for inspiration?
Hi Daniel.
> > > Based on the above, would it be possible to utilise some
> > > of these features without any dedicated userspace (mesa) support?
> > > Any other driver that has something similar that can be used
> > > for inspiration?
> >
> > This is really an interesting question indeed.
>
>
Hi Peter.
>
> I stopped pushing that patch for reasons mentioned in
> https://lkml.org/lkml/2018/4/9/108
>
> However, since then, the component approach mentioned in that mail was
> shot down and instead the tda998x driver is now a bridge (or soon, I expect
> the series from Russell King that
On 2018-08-15 17:04, Daniel Vetter wrote:
> On Wed, Aug 15, 2018 at 4:45 PM, Rob Herring wrote:
>> On Tue, Aug 14, 2018 at 10:48 PM Sam Ravnborg wrote:
>>>
>>
>> [...]
>>
> One DT related Q:
> The LCD Controller supports BGR565, but as this is less common some HW
> implmentations
On Wed, Aug 15, 2018 at 4:45 PM, Rob Herring wrote:
> On Tue, Aug 14, 2018 at 10:48 PM Sam Ravnborg wrote:
>>
>
> [...]
>
>> > > One DT related Q:
>> > > The LCD Controller supports BGR565, but as this is less common some HW
>> > > implmentations
>> > > exchange R and B, expessed in the old
On Tue, Aug 14, 2018 at 10:48 PM Sam Ravnborg wrote:
>
[...]
> > > One DT related Q:
> > > The LCD Controller supports BGR565, but as this is less common some HW
> > > implmentations
> > > exchange R and B, expessed in the old binding as wiring-mode like this:
> > >
> > >
Hi Rob.
> I don't know that 2 registers for a backlight PWM constitute an MFD. A
> single node can be both an LCD controller and a PWM.
Current suggestion from v1 patchset looks like this:
lcdc0: lcdc@70 {
compatible = "atmel,at91sam9263-lcdc-mfd";
On 13/08/2018 20:18:08+0200, Sam Ravnborg wrote:
> > Would be good to have a plan to phase-out the old atmel_lcdfb fbdev
> > driver when this one addresses some TODO items that make sense.
> Agree on this.
> One approach could be to say that when all in-kernel users of atmel_lcdfb
> are ported,
Hi Rob.
Thanks for the feedback, as I am rather new to this DT stuff
a few iterations are no suprise.
> > If I understand the proposal from you correct an example binding would
> > look like this:
> >
> >lcdc0: lcdc@70 {
> > compatible = "atmel,at91sam9263-lcdc";
> >
On Tue, Aug 14, 2018 at 04:36:03PM +0200, Alexandre Belloni wrote:
> On 13/08/2018 20:18:08+0200, Sam Ravnborg wrote:
> > > Would be good to have a plan to phase-out the old atmel_lcdfb fbdev
> > > driver when this one addresses some TODO items that make sense.
> > Agree on this.
> > One approach
On Tue, Aug 14, 2018 at 06:43:43PM +0200, Sam Ravnborg wrote:
> Hi Rob.
>
> > I don't know that 2 registers for a backlight PWM constitute an MFD. A
> > single node can be both an LCD controller and a PWM.
>
> Current suggestion from v1 patchset looks like this:
> lcdc0: lcdc@70 {
>
On Mon, Aug 13, 2018 at 04:47:26PM +0200, Nicolas Ferre wrote:
> On 12/08/2018 at 21:55, Sam Ravnborg wrote:
> > The at91sam9263 has a few interesting "GPU" features:
> >
> > - 2D memory addressing
> >Data sheet says:
> > The LCDC can be configured to work on a frame buffer
> > larger
Hi Nicholas.
On Mon, Aug 13, 2018 at 05:54:48PM +0200, Nicolas Ferre wrote:
> On 12/08/2018 at 20:41, Sam Ravnborg wrote:
> >New DRM based driver for at91sam9 SOC's that uses the
> >Atmel LCDC IP core.
>
> I'm delighted to see this work: Thanks a lot Sam!
Glad to hear.
I was a bit worried that
On 12/08/2018 at 21:55, Sam Ravnborg wrote:
The at91sam9263 has a few interesting "GPU" features:
- 2D memory addressing
Data sheet says:
The LCDC can be configured to work on a frame buffer
larger than the actual screen size. By changing the
values in a few
New DRM based driver for at91sam9 SOC's that uses the
Atmel LCDC IP core.
This is first version of a patch set that adds
drivers for the Atmel LCDC IP core.
Posted for review as the basics works now.
The LCDC IP core contains two devices:
- a PWM often used for backlight
- a LCD display
On 12/08/2018 at 20:41, Sam Ravnborg wrote:
New DRM based driver for at91sam9 SOC's that uses the
Atmel LCDC IP core.
I'm delighted to see this work: Thanks a lot Sam!
This is first version of a patch set that adds
drivers for the Atmel LCDC IP core.
Posted for review as the basics works
The at91sam9263 has a few interesting "GPU" features:
- 2D memory addressing
Data sheet says:
The LCDC can be configured to work on a frame buffer
larger than the actual screen size. By changing the
values in a few registers, it is easy to move the
displayed area
On Mon, Aug 13, 2018 at 08:18:08PM +0200, Sam Ravnborg wrote:
> Hi Nicholas.
>
> On Mon, Aug 13, 2018 at 05:54:48PM +0200, Nicolas Ferre wrote:
> > On 12/08/2018 at 20:41, Sam Ravnborg wrote:
> > >New DRM based driver for at91sam9 SOC's that uses the
> > >Atmel LCDC IP core.
> >
> > I'm
20 matches
Mail list logo
