diff options
| author | Daniel Kurtz <djkurtz@chromium.org> | 2015-12-18 08:11:33 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-12-18 13:14:27 +0100 |
| commit | 47769cbc09ebb13ffd1e2d017b698dddf7fd2855 (patch) | |
| tree | 14054f85d8ea302c9a531c48838bf31e539b0f21 /drivers/regulator | |
| parent | Linux 4.4-rc1 (diff) | |
| download | linux-47769cbc09ebb13ffd1e2d017b698dddf7fd2855.tar.xz linux-47769cbc09ebb13ffd1e2d017b698dddf7fd2855.zip | |
regulator: mt6311: Use REGCACHE_RBTREE
This regulator is on a slow i2c bus. Register accesses are very simple,
they all either enable/disable a regulator channel, or select a new
voltage level. Thus, reading registers from the device will always
return what was last written.
Therefore we can save a lot of time when reading registers by using a
regmap_cache. Since the register map is relatively large, but we only
ever access a few of them, we use an RBTREE cache.
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Acked-by: Henry Chen <henryc.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/mt6311-regulator.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/regulator/mt6311-regulator.c b/drivers/regulator/mt6311-regulator.c index 02c4e5feca8e..0495716fd35f 100644 --- a/drivers/regulator/mt6311-regulator.c +++ b/drivers/regulator/mt6311-regulator.c @@ -30,6 +30,7 @@ static const struct regmap_config mt6311_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = MT6311_FQMTR_CON4, + .cache_type = REGCACHE_RBTREE, }; /* Default limits measured in millivolts and milliamps */ |