mfd: wcd934x: Update to use maple tree register cache

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 wcd934x to use the more modern data structure.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230912-mfd-wcd934x-maple-v2-1-292a154113e3@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>

diff --git a/drivers/mfd/wcd934x.c b/drivers/mfd/wcd934x.c
index 6b942d5270c165aef076f4e9ba7827642b26dc10..7b9873b72c37b606dae8279ac5d251e63db1697f 100644 (file)
--- a/drivers/mfd/wcd934x.c
+++ b/drivers/mfd/wcd934x.c
@@ -112,7 +112,7 @@ static const struct regmap_range_cfg wcd934x_ranges[] = {
 static struct regmap_config wcd934x_regmap_config = {
        .reg_bits = 16,
        .val_bits = 8,
-       .cache_type = REGCACHE_RBTREE,
+       .cache_type = REGCACHE_MAPLE,
        .max_register = 0xffff,
        .can_multi_write = true,
        .ranges = wcd934x_ranges,