boards: nxp: rd_rw612_bga: add support for goworld 16880 display module

[danieldegrasse]

Add support for the goworld 16880 display module. As this display module only features an FFC cable, it is added as a board overlay for the RW612 BGA. This module uses an ST7796S display controller as well as an FT7401 touch controller (which is managed by the FT5336 input driver)

[dleach02]

can this display also work with the frdm_rw612 board?

[danieldegrasse]

can this display also work with the frdm_rw612 board?

In theory it can work with any board that has a SPI interface. The reason I defined this display module for the RW board specifically is because I think it has limited use outside of a custom board. The FPC interface used for this module is not generic, and in order to connect it to the RW BGA board we already need a breakout PCB (which I believe itself was a custom one-off board)

Essentially, while we should support this display upstream I think there is limited use in adding it as a generic shield, because interfacing with it essentially requires a custom board.

[decsny]

can this display also work with the frdm_rw612 board?

In theory it can work with any board that has a SPI interface. The reason I defined this display module for the RW board specifically is because I think it has limited use outside of a custom board. The FPC interface used for this module is not generic, and in order to connect it to the RW BGA board we already need a breakout PCB (which I believe itself was a custom one-off board)

Essentially, while we should support this display upstream I think there is limited use in adding it as a generic shield, because interfacing with it essentially requires a custom board.

don't think this is the right mindset, imo all boards are custom, including vendor EVKs, they shouldn't be special cases

[danieldegrasse]

don't think this is the right mindset, imo all boards are custom, including vendor EVKs, they shouldn't be special cases

This is fair- I'm open to changing this into a shield, but what exactly do we call the gpio nexus node for it? goworld_16880_display_fpc?

To be clear, the reason that I did not define this as a shield is that (IMO) a module warrants being defined as a shield once multiple in tree boards feature a connector that interfaces with the shield. So far zero boards in tree feature a connector for this display module (I connect it to the RW612 BGA using flying wires). I truthfully don't see this module being used much as a shield (given that I have been unable to find the datasheet online, let alone an order link). That being said if we'd like to define this as a shield, I'll convert this PR do to so