On 23/03/2026 15:45, Thierry Reding wrote:

On Sat, Mar 21, 2026 at 11:47:59AM +0100, Krzysztof Kozlowski wrote:

quoted

On Sat, Mar 21, 2026 at 12:40:55AM +0100, Thierry Reding wrote:

quoted

From: Thierry Reding <redacted>

The PWM controller found on Tegra264 is largely compatible with the one
on prior generations, but it comes with some extra features, hence a new
compatible string is needed.

Extra features means devices are compatible.

You also always need a new compatible even without extra features, so
last part is just confusing. Suggests like you could skip new
compatible.

Erm... if the hardware was exactly identical, then there'd be no need
for a new compatible string. It's certainly good practice to add one
anyway, but what's the point in having 10 different compatible strings
for exactly the same hardware?

Because integration is different. Nothing new here, DT maintainers
request it for years and is since long time documented in writing bindings.


Best regards,
Krzysztof