Binding table size and groups (CON-1396)

[jonsmirl]

What is the difference between these two config variables?
CONFIG_MAX_BINDINGS=8
CONFIG_ESP_MATTER_BINDING_TABLE_SIZE=100

I am running into a constraint somewhere trying to increase the number of bindings we support.

Are groups constrained somehow?
We have two GroupKeys
But then up to 25 GroupIds using those two keys.

[shubhamdp]

CONFIG_MAX_BINDINGS is unused, I think this can be removed.

CONFIG_ESP_MATTER_BINDING_TABLE_SIZE maps to MATTER_BINDING_TABLE_SIZE and used for bindings size. (https://github.com/project-chip/connectedhomeip/blob/master/src/app/util/binding-table.h#L113)

For increasing number of bindings you should increase CONFIG_ESP_MATTER_BINDING_TABLE_SIZE.

Are groups constrained somehow?

Yes, they are. Minimum supported number of groups per fabric should be (4 * no-of-endpoints-implementing-groups-cluster). I have attached the screenshot as well. This gets automatically picked up after 974997d