[PATCH 1/1] rpi: Fix build error when CONFIG_VIDEO is disabled for Raspberry Pi

[Devarsh Thakkar]

Hi Martin, Ivan

On 24/09/24 11:56, Martin Stolpe wrote:
> Hi,
> 
> Am Fr., 20. Sept. 2024 um 10:10 Uhr schrieb Ivan T. Ivanov <iivanov at suse.de
>> :
> 
>> Hi,
>>
>> On 09-20 08:32, Martin Stolpe wrote:
>>>
>>> When the CONFIG_VIDEO option is set to disabled for Raspberry Pi devices
>>> the build will fail with the following error message:
>>> "undefined reference to `fdt_simplefb_enable_and_mem_rsv'."
>>>

Thanks for the patch.

>>> Signed-off-by: Martin Stolpe <martin.stolpe at gmail.com>
>>> ---
>>>
>>>  board/raspberrypi/rpi/rpi.c | 2 +-
>>>  boot/fdt_simplefb.c         | 2 +-
>>>  2 files changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
>>> index ab5ea85cf9..bc49708f85 100644
>>> --- a/board/raspberrypi/rpi/rpi.c
>>> +++ b/board/raspberrypi/rpi/rpi.c
>>> @@ -572,7 +572,7 @@ int ft_board_setup(void *blob, struct bd_info *bd)
>>>       node = fdt_node_offset_by_compatible(blob, -1,
>> "simple-framebuffer");
>>>       if (node < 0)
>>>               fdt_simplefb_add_node(blob);
>>> -     else
>>> +     else if (IS_ENABLED(CONFIG_VIDEO))
>>>               fdt_simplefb_enable_and_mem_rsv(blob);
>>
>> I think there is one more user of this function which end of same
>> situation stm32mp1.
>>
> 
> Would it make sense to replace the config option CONFIG_FDT_SIMPLEFB with
> CONFIG_VIDEO? CONFIG_FDT_SIMPLEFB is only used in the Raspberry Pi default
> configurations but in no other board configuration and I don't see it being
> used in the code besides in stm32mp1.c.
> 

CONFIG_FDT_SIMPLEFB is only used in splash-screen context which in-turn
depends on CONFIG_VIDEO. So CONFIG_FDT_SIMPLEFB is in a way dependent on
CONFIG_VIDEO. We had fixed similar issue in past in vendor tree and by making
CONFIG_FDT_SIMPLEFB dependent on CONFIG_VIDEO using below set of patches [1]
which I was planning to post upstream too.

Kindly let me know If these patches look good to you and fix your problem too,
I can post same set of patches to upstream too.

[1] :
https://git.ti.com/cgit/ti-u-boot/ti-u-boot/commit/?h=ti-u-boot-2024.04&id=1199800505f11f2162030cb641c6d0c9276d5c9c
[2] :
https://git.ti.com/cgit/ti-u-boot/ti-u-boot/commit/?h=ti-u-boot-2024.04&id=5b4b8eac243cbd86286ff2cf57ca0469c4d86345

Regards
Devarsh


> Regards
> Martin
>