MIPS: OCTEON: program L2C_CTL, not L2C_CFG, on OCTEON II

cvmx_helper_initialize_packet_io_global() sets the L2 arbitration modes
by rewriting L2C_CFG. That register (0x1180080000000) does not exist on
OCTEON II; there the L2 controller is configured through L2C_CTL
(0x1180080800000), whose corresponding fields are rsp_arb_mode and
xmc_arb_mode.

On a CN6335 the stray write hung the board hard when this function ran -
no exception, no watchdog, just a dead console.

Keep the L2C_CFG write for CN3XXX/CN5XXX and program L2C_CTL on CN6XXX
with the values the vendor SDK uses there (rsp_arb_mode 1,
xmc_arb_mode 0), which is the same trade the existing code makes for
the older parts: keep IO blocks from being starved under high L2 load.

Assisted-by: Claude:claude-opus-5
Signed-off-by: Orgad Shaneh <orgads@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

0 files changed, 0 insertions, 0 deletions