Messages in this thread Patch in this message | | | From | Daniel Kurtz <> | Subject | [PATCH] cpufreq: mediatek: Use REGCACHE_RBTREE | Date | Mon, 30 Nov 2015 18:12:18 +0800 |
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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> --- drivers/regulator/mt6311-regulator.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/regulator/mt6311-regulator.c b/drivers/regulator/mt6311-regulator.c index 02c4e5f..0495716 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 */ -- 2.6.0.rc2.230.g3dd15c0
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