AM1808 using Parallel LCD Panel without vsync and hsync

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1

Hi,

I am working on AM1808. I made a changes in LCD configuration and LCD
panel timing parameter(linux/drivers/video/da8xx-fb.c). Can i have
some more information needs to add it here.

Existing LCD used here as Sharp - LQ043T1DG01.
My customized LCD is Innolux - AT050TN33

What i am using the LCD Panel( Innolux - AT050TN33) doesn't have VSYNC
and HSYNC supported signals. It is having DE(data enable signal) and
clock. Remaining the same pin configuration of Sharp - LQ043T1DG01.

But existing driver have HSYNC & VSYNC. How & where to change the
driver modifications according with our customised panel.

Can you give me a driver source according to this logic.

Thanks,
Kumar

2

francis kumar wrote:

Hi,

I am working on AM1808. I made a changes in LCD configuration and LCD
panel timing parameter(linux/drivers/video/da8xx-fb.c). Can i have
some more information needs to add it here.

Existing LCD used here as Sharp - LQ043T1DG01.
My customized LCD is Innolux - AT050TN33

What i am using the LCD Panel( Innolux - AT050TN33) doesn't have VSYNC
and HSYNC supported signals. It is having DE(data enable signal) and
clock. Remaining the same pin configuration of Sharp - LQ043T1DG01.

But existing driver have HSYNC& VSYNC. How& where to change the
driver modifications according with our customised panel.

well, you need to provide a proper DE signal according to the data
sheet. it looks like you could do that by using the HSYNC as DE
and gating it with the VSYNC, but I only looked at it briefly...

Can you give me a driver source according to this logic.

as said, there might be hardware "logic" needed...

3

francis kumar wrote:

Hi,

I am working on AM1808. I made a changes in LCD configuration and LCD
panel timing parameter(linux/drivers/video/da8xx-fb.c). Can i have
some more information needs to add it here.

Existing LCD used here as Sharp - LQ043T1DG01.
My customized LCD is Innolux - AT050TN33

What i am using the LCD Panel( Innolux - AT050TN33) doesn't have VSYNC
and HSYNC supported signals. It is having DE(data enable signal) and
clock. Remaining the same pin configuration of Sharp - LQ043T1DG01.

But existing driver have HSYNC& VSYNC. How& where to change the
driver modifications according with our customised panel.

well, you need to provide a proper DE signal according to the data
sheet. it looks like you could do that by using the HSYNC as DE
and gating it with the VSYNC, but I only looked at it briefly...

Can you give me a driver source according to this logic.

as said, there might be hardware "logic" needed...

4

francis kumar wrote:

Thanks for your mail.

You mean to say, what ever existing HSYNC signal can interface with DE. Is this correct? for this no need to change any
driver modification. We need to exchange our HSYNC pin to DE pin in hardware.

no, that is not what I said.

I said:

> well, you need to provide a proper DE signal according to the data
> sheet. it looks like you could do that by using the HSYNC as DE
> and gating it with the VSYNC, but I only looked at it briefly...

What about VSYNC signal in the driver. Can you give m a driver source for that.

all the source code you need to generate a VSYNC signal is already there...

5

Hi Sir,

Thanks for your mail.

Can you please give me a hardware logic for this.

You mean to say, what ever existing HSYNC signal can interface with DE. Is this correct? for this no need to change any driver modification. We need to exchange our HSYNC pin to DE pin in hardware.

What about VSYNC signal in the driver. Can you give me a driver source for that.

Thanks
Francis

6

francis kumar wrote:

Hi Sir,

Thanks for your mail.

Can you please give me a hardware logic for this.

You mean to say, what ever existing HSYNC signal can interface with DE. Is this correct? for this no need to change any
driver modification. We need to exchange our HSYNC pin to DE pin in hardware.

no, that is not what I said.

I said:

  > well, you need to provide a proper DE signal according to the data
  > sheet. it looks like you could do that by using the HSYNC as DE
  > and gating it with the VSYNC, but I only looked at it briefly...

What about VSYNC signal in the driver. Can you give me a driver source for that.

all the source code you need to generate a VSYNC signal is already there...