According to the library.
SS will be set to output as to not interfere with SPI master operation.
If you have changed the pin-outs and the library doesn't seem to work
or works intermittently, make sure this pin is set correctly. This pin
will not be used by the library other than setting its direction to
Therefore you should just be able to connect both to pin 10 and everything should still work
#define TLC_SS_PIN PB2
#define TLC_SS_PIN PB1