[PATCH] OMAP: ZOOM2: Change GPIO to enable LCD NEC NL8048HL11-01B on OMAP34x-II MDP

[PATCH] OMAP: ZOOM2: Change GPIO to enable LCD NEC NL8048HL11-01B on OMAP34x-II MDP

[Omar Ramirez Luna]

From: Yanick Saugy <yanick.saugy@heig-vd.ch>

The PIN which controls LCD's reset signal (VGA_nRESET/h_GPIO_96) was not
configured as a GPIO. We had to modify the OMAP MUX, and select this PIN
(CAM_XCLKA) as an output GPIO (OMAP_MUX_MODE4). (kernel 2.6.35)

Be aware of changing this PIN will probably disable the camera, because
it was previously configured as a camera clock.

Signed-off-by: Yanick Saugy <yanick.saugy@heig-vd.ch>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
---

I'm not sure if this patch was forgotten, hence resending. Without
it, a blanks screen is seen on zoom2 board.

Original patch:
http://patchwork.kernel.org/patch/196922/

 arch/arm/mach-omap2/board-zoom2.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-zoom2.c b/arch/arm/mach-omap2/board-zoom2.c
index 1cd6414..8fe578c 100644
--- a/arch/arm/mach-omap2/board-zoom2.c
+++ b/arch/arm/mach-omap2/board-zoom2.c
@@ -51,6 +51,8 @@ static struct omap_board_mux board_mux[] __initdata = {
 	OMAP3_MUX(ETK_D4, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
 	OMAP3_MUX(ETK_D5, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
 	OMAP3_MUX(ETK_D6, OMAP_MUX_MODE2 | OMAP_PIN_INPUT_PULLUP),
+	/* LCD Panel reset (PROD) - GPIO 96 */
+	OMAP3_MUX(CAM_XCLKA, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
 	{ .reg_offset = OMAP_MUX_TERMINATOR },
 };
 #else
-- 
1.7.1

[PATCH] OMAP: ZOOM2: Change GPIO to enable LCD NEC NL8048HL11-01B on OMAP34x-II MDP

[Tomi Valkeinen]

Hi,

On Tue, 2010-11-23 at 19:00 -0600, ext Omar Ramirez Luna wrote:
> From: Yanick Saugy <yanick.saugy@heig-vd.ch>
> 
> The PIN which controls LCD's reset signal (VGA_nRESET/h_GPIO_96) was not
> configured as a GPIO. We had to modify the OMAP MUX, and select this PIN
> (CAM_XCLKA) as an output GPIO (OMAP_MUX_MODE4). (kernel 2.6.35)
> 
> Be aware of changing this PIN will probably disable the camera, because
> it was previously configured as a camera clock.
> 
> Signed-off-by: Yanick Saugy <yanick.saugy@heig-vd.ch>
> Acked-by: Tony Lindgren <tony@atomide.com>
> Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
> ---
> 
> I'm not sure if this patch was forgotten, hence resending. Without
> it, a blanks screen is seen on zoom2 board.

Yes, I seem to have missed this.

But I'm a bit confused. You say that this will disable camera. Is there
a camera connected to the board, and it won't work after this? 

 Tomi

[PATCH] OMAP: ZOOM2: Change GPIO to enable LCD NEC NL8048HL11-01B on OMAP34x-II MDP

[Ramirez Luna, Omar]

On Wed, Nov 24, 2010 at 2:47 AM, Tomi Valkeinen
<tomi.valkeinen@nokia.com> wrote:
> Hi,
>
> On Tue, 2010-11-23 at 19:00 -0600, ext Omar Ramirez Luna wrote:
>> From: Yanick Saugy <yanick.saugy@heig-vd.ch>
>>
>> The PIN which controls LCD's reset signal (VGA_nRESET/h_GPIO_96) was not
>> configured as a GPIO. We had to modify the OMAP MUX, and select this PIN
>> (CAM_XCLKA) as an output GPIO (OMAP_MUX_MODE4). (kernel 2.6.35)
>>
>> Be aware of changing this PIN will probably disable the camera, because
>> it was previously configured as a camera clock.
>>
>> Signed-off-by: Yanick Saugy <yanick.saugy@heig-vd.ch>
>> Acked-by: Tony Lindgren <tony@atomide.com>
>> Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
>> ---
>>
>> I'm not sure if this patch was forgotten, hence resending. Without
>> it, a blanks screen is seen on zoom2 board.
>
> Yes, I seem to have missed this.
>
> But I'm a bit confused. You say that this will disable camera. Is there
> a camera connected to the board, and it won't work after this?

I'm not quite familiar with the camera, but will try to check it
(might take some time).

Yes, there is a camera module connected to zoom2 board, but I don't
know for sure if both share this pin (which at least from author's
comment and existing code appears to be the case).

Regards,

Omar