Re: [PATCH] dt-bindings: display: bridge: ldb: Require reg property only for i.MX6SX/8MP LDBs
From: Marek Vasut
Date: Sun Mar 29 2026 - 14:30:20 EST
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: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 ?
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.