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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>
Acked-by: Henry Chen <henryc.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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drivers/regulator/mt6311-regulator.c:169:3-8: No need to set .owner here. The core will do it.
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Make mt6311_buck_ops, mt6311_ldo_ops and mt6311_regulators const and remove
unneeded error variable in mt6311_i2c_probe().
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The maximum voltage of buck should be 1.39375V.
1.39375V = 0.6V + 0.00625V * 127, 127 is the max_sel of linear range.
Reported-by: Axel Lin <axel.lin@ingics.com>
signed-off-by: Henry Chen <henryc.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add regulator support for mt6311.
It has 2 regulaotrs - Buck and LDO, provide the related buck/ldo voltage
data to the driver, and creates the regulator_desc table. Supported
operations for Buck are enabled/disabled and voltage change, only
enabled/disabled for LDO.
Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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