The maple tree register cache is based on a much more modern data structure than the rbtree cache and makes optimisation choices which are probably more appropriate for modern systems than those made by the rbtree cache. In v6.5 it has also acquired the ability to generate multi-register writes in sync operations, bringing performance up to parity with the rbtree cache there.
Update the wm8998 driver to use the more modern data structure.
Signed-off-by: Mark Brown broonie@kernel.org --- drivers/mfd/wm8998-tables.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mfd/wm8998-tables.c b/drivers/mfd/wm8998-tables.c index 9b34a6d76094..b3e6e85bee89 100644 --- a/drivers/mfd/wm8998-tables.c +++ b/drivers/mfd/wm8998-tables.c @@ -1556,7 +1556,7 @@ const struct regmap_config wm8998_i2c_regmap = { .readable_reg = wm8998_readable_register, .volatile_reg = wm8998_volatile_register,
- .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, .reg_defaults = wm8998_reg_default, .num_reg_defaults = ARRAY_SIZE(wm8998_reg_default), };