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/rn5t618.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c index 7336e6d8a001..23ca00d2c624 100644 --- a/drivers/mfd/rn5t618.c +++ b/drivers/mfd/rn5t618.c @@ -62,7 +62,7 @@ static const struct regmap_config rn5t618_regmap_config = { .val_bits = 8, .volatile_reg = rn5t618_volatile_reg, .max_register = RN5T618_MAX_REG, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, }; static const struct regmap_irq rc5t619_irqs[] = { -- 2.18.2