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/khadas-mcu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/khadas-mcu.c b/drivers/mfd/khadas-mcu.c index 61396d824f16..ba981a788692 100644 --- a/drivers/mfd/khadas-mcu.c +++ b/drivers/mfd/khadas-mcu.c @@ -72,7 +72,7 @@ static const struct regmap_config khadas_mcu_regmap_config = { .max_register = KHADAS_MCU_CMD_FAN_STATUS_CTRL_REG, .volatile_reg = khadas_mcu_reg_volatile, .writeable_reg = khadas_mcu_reg_writeable, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, }; static struct mfd_cell khadas_mcu_fan_cells[] = { -- 2.18.2