In preparation of being able to enable/disable GPIO regulators, the
code that will be shared among the two kinds to regulators is factored
out into its own source files.
Signed-off-by: Sven Schwermer <sven@svenschwermer.de>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Fixed regulators don't have a set_value method. Therefore, trying to
set their value will always return -ENOSYS.
Signed-off-by: Sven Schwermer <sven@svenschwermer.de>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add SPL_DM_REGULATOR configs for palmas/lp873x/lp87565. These were missing
and the Makefile already assumes them to be defined. Add the corresponding
SPL config options. This enables the regulator support in SPL.
Signed-off-by: Keerthy <j-keerthy@ti.com>
This patch solves the following warnings:
warning: this statement may fall through [-Wimplicit-fallthrough=]
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This patch solves the following warnings:
drivers/power/regulator/stm32-vrefbuf.c: In function 'stm32_vrefbuf_set_value':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (uV == stm32_vrefbuf_voltages[i]) {
^~
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
The code that sets a regulator by looking up the voltage in a table had
an off by one error. vsel_mask is a bitmask, not the number of table
entries, so a vsel_mask value of 0x7 indicates there are 8, not 7,
entries in the table.
Cc: Peng Fan <Peng.Fan@freescale.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Alignment with STPMIC1 datasheet
s/MAIN_CONTROL_REG/MAIN_CR/g
s/MASK_RESET_BUCK/BUCKS_MRST_CR/g
s/MASK_RESET_LDOS/LDOS_MRST_CR/g
s/BUCKX_CTRL_REG/BUCKX_MAIN_CR/g
s/VREF_CTRL_REG/REFDDR_MAIN_CR/g
s/LDOX_CTRL_REG/LDOX_MAIN_CR/g
s/USB_CTRL_REG/BST_SW_CR/g
s/STPMIC1_NVM_USER_STATUS_REG/STPMIC1_NVM_SR/g
s/STPMIC1_NVM_USER_CONTROL_REG/STPMIC1_NVM_CR/g
and update all the associated defines.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Alignment with kernel driver name & binding
introduced by https://patchwork.kernel.org/cover/10761943/
to use the final marketing name = STPMIC1.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Prepare file modification for kernel alignment and
rename driver to stpmic1.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
SW impact for Rev 1.2 of STPMIC1 in U-Boot:
Buck converters output voltage change for Buck1
=> Vdd min 0,725 to max 1,5V instead of 0.6V to 1.35V
(see STPMIC1 datasheet / chapter 5.3 Buck converters)
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
As per recent TRM[1], PBIAS cell on dra7 devices supports
3.3v and not 3.0v as documented earlier.
Update PBIAS regulator max voltage and the voltage written
in the driver to reflect this.
[1] http://www.ti.com/lit/pdf/sprui30
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
According to datasheet, the output on LDO regulators will start
appearing after 10-15 us.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Changing voltage and enabling regulator might require delays so the
regulator stabilizes at expected level.
Add support for "regulator-ramp-delay" binding which can introduce
required time to both enabling the regulator and to changing the
voltage.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
regulator_set_enable() api throws an error in the following three cases:
- when requested to disable an always-on regulator
- when set_enable() ops not provided by regulator driver
- when enabling is actually failed.(Error returned by the regulator driver)
Sometimes consumer drivers doesn't want to track the first two scenarios
and just need to worry about the case where enabling is actually failed.
But it is also a good practice to have an error value returned in the
first two cases.
So introduce an api regulator_set_enable_if_allowed() which ignores the
first two error cases and returns an error as given by regulator driver.
Consumer drivers can use this api need not worry about the first two
error conditions.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This reverts commit e17e0ceb83.
It is advised to return an error when trying to disable an always-on
regulator and let the consumer driver handle the error if needed.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
The OMAP36 and DM37 TRM state to disable extneded drain IO before
changing the PBIAS. This patch does this before pmic writes if
the CONFIG_MMC_OMAP36XX_PINS flag is set and the cpu family is
omap36xx
Signed-off-by: Adam Ford <aford173@gmail.com>
This patch allows to enable the PWM regulator driver
independent for U-Boot and SPL.
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
commit 4f86a724e8 ("power: regulator: denied disable on always-on
regulator") throws an error when requested to disable an always-on
regulator. It is right that an always-on regulator should not be
attempted to be disabled. But at the same time regulator framework
should not return an error when such request is received. Instead
it should just return success without attempting to disable the
specified regulator. This is because the requesting driver will
not have the idea if the regulator is always-on or not. The
requesting driver will always try to enable/disable regulator as
per the required flow. So it is upto regulator framework to not
break such scenarios.
Fixes: 4f86a724e8 ("power: regulator: denied disable on always-on regulator")
Reported-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
This adds a driver for the FAN53555 family of regulators and wraps it
in a PMIC implementation.
While these devices support a 'normal' and 'suspend' mode (controlled
via an external pin) to switch between two programmable voltages, this
incarnation of the driver assumes that the device is always operating
in 'normal' mode.
Only setting/reading the programmed voltage is supported at this time
and the following device functionality remains unsupported:
- switching the selected voltage (via a GPIO)
- disabling the voltage output via software-control
This matches the functionality of the Linux driver.
Tested on a RK3399-Q7 (with 'option 5' devices): setting voltages from
the U-Boot shell and verifying output voltages on the board.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Don't disable regulator which are tagged as "regulator-always-on" in DT.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jack Mitchell <jack@embed.me.uk>
Tested-by: Jack Mitchell <jack@embed.me.uk>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Richard Röjfors <richard@puffinpack.se>
Tested-by: Richard Röjfors <richard@puffinpack.se>
Reviewed-by: Felix Brack <fb@ltec.ch>
Tested-by: Felix Brack <fb@ltec.ch>
The Makefile already tests for SPL_DM_REGULATOR_GPIO, but Kconfig
does not provide it. This adds SPL_DM_REGULATOR_GPIO to Kconfig.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Complete in the drivers directory the work started with
commit 83d290c56f ("SPDX: Convert all of our single
license tags to Linux Kernel style").
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
The driver was developed with references for more than just
dra7, but never included. At least for omap3, this appears
to be functional.
Signed-off-by: Adam Ford <aford173@gmail.com>
Add u-boot,off-on-delay-us for fixed regulator.
Depends on board design, the gpio regulator sometimes
connects with a big capacitance. When need to off, then
on the regulator, if there is no enough delay,
the voltage does not drop to 0, so introduce this
property to handle such case.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
This patch adds a delay when regulators are disabled.
This delay is set to 5 ms to cover all use cases.
The worst use case actually seen is during a SD card power cycle.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Fix ldo_get_enable() and ldo_set_enable() functions for LDOs with an
index > 7. Turns out there are actually two separate AS3722_LDO_CONTROL
registers AS3722_LDO_CONTROL0 and AS3722_LDO_CONTROL1. Actually make use
of both. While at it also actually use the enable parameter of the
ldo_set_enable() function which now truly allows disabling as opposed to
only enabling LDOs.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Add regulator driver for STM32 voltage reference buffer which can be
used as voltage reference for ADCs, DACs and external components through
dedicated VREF+ pin.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Enable support for the regulator functions of the STPMU1X PMIC. The
driver implements get/set api for the various BUCKS and LDOs supported
by the PMIC device. This driver is controlled by a device tree node
which includes voltage limits.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.
Signed-off-by: Tom Rini <trini@konsulko.com>
We should not evaluate the value of reg before its value is set.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.
This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h
and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>
Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
exynos5422 has the s2mps11 PMIC.
s2mps11 pmic has the 10-BUCK and 38-LDO regulators.
Each IP and devices in exynos5422 can be controlled by each regulators.
This patch is support for s2mps11 regulator driver.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
The patch replaces the former error() by the new pr_err().
This makes the TPS65910 driver conform to Masahiro's patch
'treewide:replace with error() with pr_err()' introduced
October 2017.
Signed-off-by: Felix Brack <fb@ltec.ch>
Reviewed-by: Simon Glass <sjg@chromium.org>
Texas Instrument's TPS65910 PMIC contains 3 buck DC-DC converts, one
boost DC-DC converter and 8 LDOs. This patch implements driver model
support for the TPS65910 PMIC and its regulators making the get/set
API for regulator value/enable available.
This patch depends on the patch "am33xx: Add a function to query MPU
voltage in uV" to build correctly. For boards relying on the DT
include file tps65910.dtsi the v3 patch "power: extend prefix match
to regulator-name property" and an appropriate regulator naming is
also required.
Signed-off-by: Felix Brack <fb@ltec.ch>
Reviewed-by: Simon Glass <sjg@chromium.org>
U-Boot widely uses error() as a bit noisier variant of printf().
This macro causes name conflict with the following line in
include/linux/compiler-gcc.h:
# define __compiletime_error(message) __attribute__((error(message)))
This prevents us from using __compiletime_error(), and makes it
difficult to fully sync BUILD_BUG macros with Linux. (Notice
Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().)
Let's convert error() into now treewide-available pr_err().
Done with the help of Coccinelle, excluing tools/ directory.
The semantic patch I used is as follows:
// <smpl>
@@@@
-error
+pr_err
(...)
// </smpl>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Re-run Coccinelle]
Signed-off-by: Tom Rini <trini@konsulko.com>
The Makefile already tests for SPL_DM_REGULATOR_FIXED, but Kconfig
does not provide it. This adds SPL_DM_REGULATOR_FIXED to Kconfig.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
In the TI SOCs a PBIAS cell exists to provide a bias voltage to the MMC1
IO cells. Without this bias voltage these I/O cells can not function
properly. The PBIAS cell is controlled by software.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Some LDOs have a bypass capability. Make sure that the bypass is disabled
when is the LDO is enabled (otherwise the voltage can't be changed).
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This pmic includes regulators which should have their own driver. Add
a driver to support these.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
Tested-by: Stephen Warren <swarren@nvidia.com>
The regulator_enable() should be called from upper layer like
regulators_enable_boot_on(), remove it from pwm regulator driver.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
[fixed up typo in commit message:]
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
The rkpwm reg order has fixed by below patch:
e3ef41d rockchip: pwm: fix the register layout for the PWM controller
We need to correct the parameter order for pwm_set_config() to make
the pwm regulator works correctly.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
get_enable should be able to return error values. Hence change
the return type to integer.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The RK818 PMIC contains a charger. Add very basic charger functionality
to be able to regulate the USB input current and charger shutdown limits.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Enabling CONFIG_SPL_POWER_SUPPORT will cause a compiler warning:
‘get_ldo_reg’ defined but not used [-Wunused-function]
Let's wrap get_ldo_reg(), rk808_ldo and rk818_ldo with ENABLE_DRIVER
which is only set for non SPL builds.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This file does not report a few possible errors and one message is missing
a newline. Fix these.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
The driver provides regulator set/get voltage
enable/disable functions for lp87565 family of PMICs.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Since priv->init_voltage is an unsigned integer it can never be
negative. So the current code fails to detect a missing
'regulator-init-microvolt' property and instead misconfigures the
PWM device. Fix this by making the relevant members of
'struct pwm_regulator_info' signed integers.
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Till now get_ldo_reg did a return &rk808_ldo[num - 1]; to return
the ldo register offset but didn't take into account that its
calling functions already created the ldo as ldo = dev->driver_data - 1.
This resulted in the setting for ldo8 writing to the register of ldo7
and so on. So fix this and get the correct ldo register data.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Simon Glass <sjg@chromium.org>
Inside of
max77686_buck_volt2hex/max77686_buck_hex2volt/max77686_ldo_volt2hex we
check that the value we calculate is >= 0 however we declare 'hex' as
unsigned int making these always true. Mark these as 'int' instead. We
also move hex_max to int as they are constants that are 0x3f/0xff.
Given that the above functions are marked as returning an int, make the
variables we assign their return value to also be int to be able to
catch the error condition now. Reported by clang-3.8.
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Since this driver can be used for rk8xx series pmic,
let's rename rk808 to rk8xx, to make it clear.
Configs parts are done by sed -i "s/RK808/RK8XX/g" `grep RK808 -lr ./`
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Add support for the rk818 regulator. The regulator module consists
of 4 DCDCs, 9 LDOs, 1 switch and 1 BOOST converter which is used to
power OTG and HDMI5V.
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Both RK808 and RK818 chips are using a similar register map,
so we can reuse them.
I have also add reg prefix to exist registers, to keep them same style.
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The latest kernel PWM drivers enable the polarity settings. When system
run from U-Boot to kerenl, if there are differences in polarity set or
duty cycle, the PMW will re-init:
close -> set polarity and duty cycle -> enable the PWM.
The power supply controled by pwm regulator may have voltage shaking,
which lead to the system not stable.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
The array indices used currently are dispalaced by 1 for
SMPS6 through SMPS10 in the respective places of voltage and ctrl
arrays hence fix the same as to assign the right voltage and ctrl
registers.
Signed-off-by: Keerthy <j-keerthy@ti.com>
At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add support to handle enable-active-high DT property. This property is
used to drive the gpio controlling fixed regulator as active high when
claiming gpio line.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
Currently the specific set ops functions are directly
called without any check for min/max current limits for a regulator.
Check for them and proceed.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Fixed checking of current limits:
Signed-off-by: Simon Glass <sjg@chromium.org>
Currently the specific set ops functions are directly
called without any check for voltage limits for a regulator.
Check for them and proceed.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Fixed checking of voltate limits:
Signed-off-by: Simon Glass <sjg@chromium.org>
In case we want to force a particular value on a regulator
irrespective of the min/max constraints for testing purposes
one can call regulator_set_value_force function.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The driver provides regulator set/get voltage
enable/disable functions for lp873x family of PMICs.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The driver provides regulator set/get voltage
enable/disable functions for palmas family of PMICs.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Add support for gpio regulators. As of now this driver caters
to gpio regulators with one gpio. Supports setting voltage values to gpio
regulators and retrieving the values.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
According to the binding documentation the fixed regulator enable GPIO
is optional. However so far registration thereof failed if no enable
GPIO was specified. Fix this by making it entirely optional whether an
enable GPIO is used.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
add driver support for pwm regulator.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
When enabling a fixed regulator, it may take some time to rise to the
correct voltage. If we do not delay here then subsequent operations
will fail.
Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The voltage and control registers need to be looked up from the value in
driver_data. Adjust the get_value and get_enable functions to match the
corresponding set_* functions.
Signed-off-by: John Keeping <john@metanate.com>
Acked-by: Simon Glass <sjg@chromium.org>
Some regulators will not implement any operations (e.g. fixed regulators).
This is not an error, so allow the autoset process to continue when one
of these regulators is found.
Signed-off-by: Simon Glass <sjg@chromium.org>
The currect PMIC debugging is a little confusing. Adjust it so that it is
clear whether the operation succeeded or failed. Also, avoid creating a new
error return value when a perfectly good one is already available.
Signed-off-by: Simon Glass <sjg@chromium.org>
For some boards the pmic interface is useful but the regulator interface
(which comes with it) is too large. Allow them to be separated such that
SPL can decide which it needs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add regulator support for the RK808 PMIC. It integrated 4 BUCKs and 8 LDOs
all of which are supported by this driver.
Signed-off-by: Simon Glass <sjg@chromium.org>
