Re: [microblaze-uclinux] plb tft lcd controller

[Paul Hartke <phartke@xxxxxxxxxxxx>]

DCR is used to as the control port for the plb_tft core.  If you need to
modify any of the control registers from their defaults--such as the
framebuffer base address--then you need to hook this up to the processor.

Same as your PPC based design.

Paul

Quoting leo han <wenwenti@xxxxxxxxxxx>:
> Hi Paul,
>
> I am not sure I understand what you said. So you mean we should have the
> DDR
> connected to plb bus. And the tft reads data from DDR through plb bus,
> while
> the MicroBlaze reads/write data from/to memory through opb2plb bridge. Is
> that right?
> Our current solution is DDR on opb bus. The tft reads the DDR through
> plb2opb bridge.   And we do not have the opb2dcr bridge.
>
> Thanks.
>
>
> >From: "leo han" <wenwenti@xxxxxxxxxxx>
> >Reply-To: microblaze-uclinux@xxxxxxxxxxxxxx
> >To: microblaze-uclinux@xxxxxxxxxxxxxx
> >Subject: Re: [microblaze-uclinux] plb tft lcd controller
> >Date: Mon, 20 Feb 2006 20:44:48 -0800
> >
> >Yes. I am using the microblaze with tft. It has the opb2plb bridge. But
> I
> >don't instatiate the opb2dcr bridge. Actually, this tft works well if I
> use
> >powerpc. I will try the opb2dcr bridge. Thanks.
> >
> >>From: Paul Hartke <phartke@xxxxxxxxxxxx>
> >>Reply-To: microblaze-uclinux@xxxxxxxxxxxxxx
> >>To: microblaze-uclinux@xxxxxxxxxxxxxx, leo han <wenwenti@xxxxxxxxxxx>
> >>CC: microblaze-uclinux@xxxxxxxxxxxxxx
> >>Subject: Re: [microblaze-uclinux] plb tft lcd controller
> >>Date: Sat, 18 Feb 2006 08:01:11 -0800
> >>
> >>Did you associate the tft_ref driver with the hardware
> plb_tft_cntrl_ref
> >>pcore?  Otherwise EDK won't know to compile the software drivers for
> the
> >>pcore.
> >>
> >>Also, I assume you are using Microblaze.  If that is the case, you need
> >>the
> >>opb2plb bridge to connect the plb_tft_cntrl_ref to Microblaze.  Also,
> >>you'll need an opb2dcr bridge for the control port as well.
> >>
> >>Paul
> >>
> >>Quoting leo han <wenwenti@xxxxxxxxxxx>:
> >> > I had a problem with the tft controller. I instantiated an instance
> of
> >> > the
> >> > controller in BSB. It includes the IP in mhs. However, I can not
> >>compile
> >> > the
> >> > software I downloaded from xilinx. It seems that the generated
> >> > xparameters.h
> >> > file dose not define the macros for tft.
> >> > Could anybody point me to any information about the tft?
> >> > BTW, I am using EDK7.1 and XUP board.
> >> >
> >> > Thanks.
> >> >

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