Re: [PATCH 3/4] iio: light: apds9306: convert to use maple tree register cache

From: Subhajit Ghosh
Date: Mon Oct 27 2025 - 09:09:24 EST


On 24/10/25 18:08, Chu Guangqing wrote:
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: Chu Guangqing <chuguangqing@xxxxxxxxxx>
---
drivers/iio/light/apds9306.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/light/apds9306.c b/drivers/iio/light/apds9306.c
index 389125675caa..7e68cca0edfa 100644
--- a/drivers/iio/light/apds9306.c
+++ b/drivers/iio/light/apds9306.c
@@ -350,7 +350,7 @@ static const struct regmap_config apds9306_regmap = {
.volatile_table = &apds9306_volatile_table,
.precious_table = &apds9306_precious_table,
.max_register = APDS9306_ALS_THRES_VAR_REG,
- .cache_type = REGCACHE_RBTREE,
+ .cache_type = REGCACHE_MAPLE,
};
static const struct reg_field apds9306_rf_sw_reset =
Looks good. I will test it on a real hardware soon. Thank you.
Jonathan will know more about regmap internal implementations.

Acked-by: Subhajit Ghosh <subhajit.ghosh@xxxxxxxxxxxxxx>

Regards,
Subhajit Ghosh