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. Signed-off-by: Bo Liu <liubo03@xxxxxxxxxx> --- drivers/mfd/rk8xx-spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/rk8xx-spi.c b/drivers/mfd/rk8xx-spi.c index fd137f38c2c4..3405fb82ff9f 100644 --- a/drivers/mfd/rk8xx-spi.c +++ b/drivers/mfd/rk8xx-spi.c @@ -34,7 +34,7 @@ static const struct regmap_config rk806_regmap_config_spi = { .reg_bits = 16, .val_bits = 8, .max_register = RK806_BUCK_RSERVE_REG5, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, .volatile_table = &rk806_volatile_table, }; -- 2.18.2