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author | Alberto Panizzo <maramaopercheseimorto@gmail.com> | 2010-01-19 11:48:54 (GMT) |
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committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2010-03-03 14:49:23 (GMT) |
commit | f4b97b36b7c6b2d4455f27d6371869f915cbe8fd (patch) | |
tree | 460b29d5ed24c2f3d499099d35df2ee7ae01bba4 /drivers/regulator/Kconfig | |
parent | eda79a3041a2cada0d4ee9491c99c3874b322356 (diff) | |
download | linux-fsl-qoriq-f4b97b36b7c6b2d4455f27d6371869f915cbe8fd.tar.xz |
regulator: mc13783: consider Power Gates as digital regulators.
GPO regulators are digital outputs that can be enabled or disabled by a
dedicated bit in mc13783 POWERMISC register.
In this family can be count in also Power Gates (PWGT1 and 2): enabled by
a dedicated pin a Power Gate is an hardware driven supply where the output
(PWGTnDRV) follow this law:
Bit PWGTxSPIEN | Pin PWGTxEN | PWGTxDRV | Read Back
0 = default | | | PWGTxSPIEN
---------------+-------------+----------+------------
1 | x | Low | 0
0 | 0 | High | 1
0 | 1 | Low | 0
As read back value of control bit reflects the PWGTxDRV state (not the
control value previously written) and mc13783 POWERMISC register contain
only regulator related bits, a dedicated function to manage these bits is
created here with the aim of tracing the real value of PWGTxSPIEN bits
and reproduce it on next writes.
All POWERMISC users _must_ use the new function to not accidentally
disable Power Gates supplies.
v2 changes:
-Better utilization of abstraction layers.
-Voltage query support. GPO's and PWGTxDRV are fixed voltage regulator
with voltage value of 3.1V and 5.5V respectively.
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers/regulator/Kconfig')
0 files changed, 0 insertions, 0 deletions