clk: vc5: Do not warn about disabled output buffer input muxes

The output buffer input mux can be configured in either of three
states -- disabled, input from FOD, input from previous output.
If the output buffer input mux is set to disabled, the code in
vc5_clk_out_get_parent() would consider this an invalid setting
and warn about it, which is not necessarily the case.

In case the output buffer input mux is disabled, default to input
from FOD to have some parent and don't print the warning.

Signed-off-by: Marek Vasut <[email protected]>
Cc: Stephen Boyd <[email protected]>
Cc: Alexey Firago <[email protected]>
Cc: Michael Turquette <[email protected]>
Cc: Laurent Pinchart <[email protected]>
Cc: [email protected]
Tested-by: Laurent Pinchart <[email protected]> # Salvator-XS with the display LVDS output.
Signed-off-by: Stephen Boyd <[email protected]>

0 files changed, 0 insertions, 0 deletions