Re: [PATCH] dt-bindings: display: bridge: ldb: Require reg property only for i.MX6SX/8MP LDBs

[Marek Vasut <marex@nabladev.com>]

On 3/29/26 7:42 PM, Marco Felsch wrote:

Hello Marco,

> sorry for not writting back earlier, the last weeks were quite busy.

Tell me about it ...

> On 26-03-29, Liu Ying wrote:
>> LDB's parent device could be a syscon which doesn't allow a reg property
>> to be present in it's child devices, e.g., NXP i.MX93 Media blk-ctrl
>> has a child device NXP i.MX93 Parallel Display Format Configuration(PDFC)
>> without a reg property(LDB is also a child device of the Media blk-ctrl).
>> To make the LDB schema be able to describe LDBs without the reg property
>> like i.MX93 LDB, require the reg property only for i.MX6SX/8MP LDBs.
> 
> NACK, we want to describe the HW and from HW PoV the LDB is and was
> always part of a syscon. This is the case for all SoCs i.MX6SX/8MP/93.
> 
>> Fixes: 8aa2f0ac08d3 ("dt-bindings: display: bridge: ldb: Add check for reg and reg-names")
> 
> Therefore I would just revert this patch completely.
Last time, I pointed out the hardware is part of syscon, but as a 
subnode and therefore with reg properties. What is the problem there ?