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authorSteve Twiss <stwiss.opensource@diasemi.com>2014-02-12 09:57:52 (GMT)
committerJiri Slaby <jslaby@suse.cz>2014-03-05 16:13:50 (GMT)
commitd57db0b6149ad74940b07f8939fcdb3e578eea70 (patch)
tree73cfe09c496f21350726137160e91c01081b2381 /net
parent33328880843bac26ae1b8f62569dad13dd703bf0 (diff)
downloadlinux-fsl-qoriq-d57db0b6149ad74940b07f8939fcdb3e578eea70.tar.xz
regulator: da9063: Bug fix when setting max voltage on LDOs 5-11
commit ebf6dad0de89677aa58a4d8b009014ff88a23452 upstream. Bug fix to allow the setting of maximum voltage for certain LDOs. What the bug is: There is a problem caused by an invalid calculation of n_voltages in the driver. This n_voltages value has the potential to be different for each regulator. The value for linear_min_sel is set as DA9063_V##regl_name# which can be different depending upon the regulator. This is chosen according to the following definitions in the DA9063 registers.h file: DA9063_VLDO1_BIAS 0 DA9063_VLDO2_BIAS 0 DA9063_VLDO3_BIAS 0 DA9063_VLDO4_BIAS 0 DA9063_VLDO5_BIAS 2 DA9063_VLDO6_BIAS 2 DA9063_VLDO7_BIAS 2 DA9063_VLDO8_BIAS 2 DA9063_VLDO9_BIAS 3 DA9063_VLDO10_BIAS 2 DA9063_VLDO11_BIAS 2 The calculation for n_voltages is valid for LDOs whose BIAS value is zero but this is not correct for those LDOs which have a non-zero value. What the fix is: In order to take into account the non-zero linear_min_sel value which is set for the regulators LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 and LDO11, the calculation for n_voltages should take into account the missing term defined by DA9063_V##regl_name#. This will in turn allow the core constraints calculation to set the maximum voltage limits correctly and therefore allow users to apply the maximum expected voltage to all of the LDOs. Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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