Re: [PATCH v2 1/2] dt-bindings: trivial-devices: add ltp8800

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On 11/6/24 08:46, Conor Dooley wrote:
On Wed, Nov 06, 2024 at 08:35:33AM -0800, Guenter Roeck wrote:
On 11/6/24 08:06, Conor Dooley wrote:
On Tue, Nov 05, 2024 at 08:34:01PM -0800, Guenter Roeck wrote:
On 11/5/24 19:09, Cedric Encarnacion wrote:
Add Analog Devices LTP8800-1A, LTP8800-2, and LTP8800-4A DC/DC μModule
regulator.

A single compatible for 3 devices is highly suspect. What is
different between these devices?


The maximum supported current is different.

-2:  135A
-1A: 150A
-4A: 200A

Programming is exactly the same, which is why I had asked the submitter to use
a single compatible property. Sorry for that if it is inappropriate.

Is there some guidance explaining when to use a single vs. multiple compatible
properties for different chip variants ?

TBH, I'm biased and a bit paranoid, so I'd probably give them all
compatibles and set one of them as a fallback. If the programming model

Sometimes compatibles have been rejected because a new chip variant is fully
compatible with an existing one. Now you are doing the opposite. A document
providing reliable guidance one way or the other would really be useful.

Thanks,
Guenter





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