18.05.2021 21:34, Mark Brown пишет:

On Tue, May 18, 2021 at 01:09:49PM -0500, Rob Herring wrote:

quoted

On Tue, May 18, 2021 at 03:13:56AM +0300, Dmitry Osipenko wrote:

quoted

quoted

Squash all machine drivers into a single-universal one. This reduces
code duplication, eases addition of a new drivers and upgrades older
code to a modern Linux kernel APIs.

quoted

Nice, I never understood why each codec needed it's own machine driver 
(and typically in turn compatible string).

It's generally the clocking configuration, things with fancy clock trees
don't play so nicely with generic systems where we want to configure
them at runtime, or things with complex routing in the CPU where we
only recently started getting bindings that were functional enough to
use.  Tegra is fairly complex internally.

This is true, but still it's more optimal to use flags in a single
common driver for the minor differences rather than to duplicate 90% of
the code. In practice majority of tegra boards are derived from the same
reference design, thus the h/w configurations are mostly the same.