[U-Boot] [PATCH V2] Origen: Set FIMD as the default display path

[Donghwa Lee <dh09.lee@samsung.com>]

On 2013? 08? 19? 12:06, Tushar Behera wrote:
> On 19 August 2013 07:22, Donghwa Lee <dh09.lee@samsung.com> wrote:
>> On Fri, Aug 16, 2013 at 16:31, Ajay kumar wrote:
>>
>> On Thu, Aug 15, 2013 at 6:53 PM, Tushar Behera <tushar.behera@linaro.org>
>> wrote:
>>> On EXYNOS4210, there are three paths for display data to be processed,
>>> namely MIE, MDNIE and FIMD. On Origen board, FIMD display controller
>>> is used.
>>>
>>> Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
>>> ---
>>> Changes for V2:
>>> * Updated review comments from Ajay Kumar, reusing the code from
>>> arch/arm/cpu/armv7/exynos/system.c.
>>>
>>>  board/samsung/origen/origen.c |    3 +++
>>>  1 file changed, 3 insertions(+)
>>>
>>> diff --git a/board/samsung/origen/origen.c b/board/samsung/origen/origen.c
>>> index 15f77ca..bb16699 100644
>>> --- a/board/samsung/origen/origen.c
>>> +++ b/board/samsung/origen/origen.c
>>> @@ -22,6 +22,9 @@ int board_init(void)
>>>         gpio2 = (struct exynos4_gpio_part2 *) EXYNOS4_GPIO_PART2_BASE;
>>>
>>>         gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
>>> +
>>> +       set_system_display_ctrl();
>>> +
>> Ok. You are trying to get the display up in the kernel,
>> without enabling the display in u-boot.
>> And, thats why you are making an explicit call here?
>>
> Yes, as of now, I don't want LCD support in u-boot, but I want to just
> enable the display path.
>

If you don't need to LCD support in u-boot, which case do you need to enable the display path to FIMD?

>> Previously, Ajay kumar said set_system_display_ctrl() function is already
>> called by
>> lcd_ctrl_init() of exynos_fb.c.
>> If you need to use FIMD path, you'd better use the existing one.
> I tried enabling CONFIG_LCD and related config options so that
> existing display path in u-boot is called. That somehow stalls the
> u-boot and I didn't want to pursue that much as calling this function
> fixes my issue.
>
>>>         return 0;
>>>  }
>>>
>>> --
>>> 1.7.9.5
>>>
>>
>
>