Skip to content

cloud-kernel
cloud-kernel

openanolis / cloud-kernel
1 年多 前同步成功

通知 160
Star 36
Fork 7
cloud-kernel
cloud-kernel
切换分支/标签
  1. 15 7月, 2014 1 次提交
  3. 26 5月, 2014 1 次提交
  5. 15 4月, 2014 1 次提交
  7. 22 3月, 2014 1 次提交
  9. 18 3月, 2014 1 次提交
  11. 12 3月, 2014 1 次提交
  13. 05 3月, 2014 1 次提交
  15. 15 2月, 2014 1 次提交
  17. 24 12月, 2013 1 次提交
  19. 19 12月, 2013 1 次提交
  21. 21 9月, 2013 1 次提交
  23. 17 9月, 2013 2 次提交
  25. 30 8月, 2013 1 次提交
    • K
      regulator: da9063: Add Dialog DA9063 voltage regulators support. · 69ca3e58
      由 Krystian Garbaciak 提交于 
      The driver adds support for the following DA9063 PMIC regulators:
 - 11x LDOs (named LDO1 - LDO11),
 - 6x buck converters (BCORE1, BCORE2, BPRO, BMEM, BIO, BPERI),

Regulators provide following operations:
 - REGULATOR_CHANGE_STATUS and REGULATOR_CHANGE_VOLTAGE for all regulators,
 - REGULATOR_CHANGE_MODE for LDOs and buck converters, where:
     - LDOs allow REGULATOR_MODE_NORMAL and REGULATOR_MODE_STANDBY,
     - buck converters allow REGULATOR_MODE_FAST, REGULATOR_MODE_NORMAL
       and REGULATOR_MODE_STANDBY,
 - REGULATOR_CHANGE_CURRENT for buck converters (current limits).

The driver generates REGULATOR_EVENT_OVER_CURRENT for LDO3, LDO4, LDO7, LDO8
and LDO11.

Internally, PMIC provides two voltage configurations for normal and suspend
system state for each regulator. The driver switches between those on
suspend/wake-up to provide quick and fluent output voltage change.

This driver requires MFD core driver for operation.
Signed-off-by: NKrystian Garbaciak <krystian.garbaciak@diasemi.com>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NMark Brown <broonie@linaro.org>
      69ca3e58
  27. 07 8月, 2013 2 次提交
  29. 25 7月, 2013 1 次提交
  31. 20 7月, 2013 1 次提交
  33. 18 7月, 2013 1 次提交
  35. 25 6月, 2013 1 次提交
  37. 08 6月, 2013 1 次提交
  39. 12 5月, 2013 1 次提交
    • A
      regulator: Introduce TI Adaptive Body Bias(ABB) on-chip LDO driver · 40b1936e
      由 Andrii.Tseglytskyi 提交于 
      Adaptive Body Biasing (ABB) modulates transistor bias voltages
dynamically in order to optimize switching speed versus leakage.

Texas Instruments' SmartReflex 2 technology provides support for this
power management technique with Forward Body Biasing (FBB) and Reverse
Body Biasing (RBB). These modulate the body voltage of transistor
cells or blocks dynamically to gain performance and reduce leakage.
TI's SmartReflex white paper[1] has further information for usage in
conjunction with other power management techniques.

The application of FBB/RBB technique is determined for each unique
device in some process nodes, whereas, they are mandated on other
process nodes.

In a nutshell, ABB technique is implemented on TI SoC as an on-chip
LDO which has ABB module controlling the bias voltage. However, the
voltage is unique per device. These vary per SoC family and the manner
in which these techniques are used may vary depending on the Operating
Performance Point (OPP) voltage targeted. For example:
OMAP3630/OMAP4430: certain OPPs mandate usage of FBB independent of
	devices.
OMAP4460/OMAP4470: certain OPPs mandate usage of FBB, while others may
	optionally use FBB or optimization with RBB.
OMAP5: ALL OPPs may optionally use ABB, and ABB biasing voltage is
	influenced by vset fused in s/w and requiring s/w override of
	default values.

Further, two generations of ABB module are used in various TI SoCs.
They have remained mostly register field compatible, however the
register offset had switched between versions.

We introduce ABB LDO support in the form of a regulator which is
controlled by voltages denoting the desired Operating Performance
Point which is targeted. However, since ABB transition is part of OPP
change sequence, the sequencing required to ensure sane operation
w.r.t OPP change is left to the controlling driver (example: cpufreq
SoC driver) using standard regulator operations.

The driver supports all ABB modes and ability to override ABB LDO vset
control efuse based ABB mode detection etc.

Current implementation is heavily influenced by the original patch
series [2][3] from Mike Turquette. However, the current implementation
supports only device tree based information.

[1] http://www.ti.com/pdfs/wtbu/smartreflex_whitepaper.pdf
[2] http://marc.info/?l=linux-omap&m=134931341818379&w=2
[3] http://marc.info/?l=linux-arm-kernel&m=134931402406853&w=2

[nm@ti.com: co-developer]
Signed-off-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NAndrii.Tseglytskyi <andrii.tseglytskyi@ti.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
      40b1936e
  41. 30 3月, 2013 1 次提交
  43. 25 12月, 2012 1 次提交
  45. 23 11月, 2012 1 次提交
  47. 19 11月, 2012 1 次提交
  49. 15 11月, 2012 1 次提交
  51. 13 11月, 2012 1 次提交
  53. 15 10月, 2012 2 次提交
  55. 10 9月, 2012 1 次提交
  57. 29 8月, 2012 1 次提交
    • G
      regulator: add MAX8907 driver · ffee1909
      由 Gyungoh Yoo 提交于 
      The MAX8907 is an I2C-based power-management IC containing voltage
regulators, a reset controller, a real-time clock, and a touch-screen
controller.

The original driver was written by:
* Gyungoh Yoo <jack.yoo@maxim-ic.com>

Various fixes and enhancements by:
* Jin Park <jinyoungp@nvidia.com>
* Tom Cherry <tcherry@nvidia.com>
* Prashant Gaikwad <pgaikwad@nvidia.com>
* Dan Willemsen <dwillemsen@nvidia.com>
* Laxman Dewangan <ldewangan@nvidia.com>

During upstreaming, I (swarren):
* Converted to regmap.
* Allowed probing from device tree.
* Reworked the regulator driver to be represented as a single device that
  provides multiple regulators, rather than as a device per regulator.
* Replaced many regulator ops with standard functions.
* Added ability to specify supplies for each regulator.
* Removed the WLED regulator. If/when we expose this in the driver, it
  should be a backlight object not a regulator object.
* Renamed from max8907c->max8907, since the driver covers at least the
  C and B revisions.
* General cleanup.
Signed-off-by: NGyungoh Yoo <jack.yoo@maxim-ic.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NLaxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
      ffee1909
  59. 20 7月, 2012 1 次提交
  61. 11 7月, 2012 1 次提交
  63. 25 6月, 2012 1 次提交
  65. 20 6月, 2012 2 次提交
  67. 03 6月, 2012 1 次提交
  69. 19 5月, 2012 1 次提交
  71. 04 4月, 2012 1 次提交