Add static key to fix the compile waring.
The warning log: "warning: no previous prototype for
‘pf9453_regulator_set_ramp_delay_regmap’ [-Wmissing-prototypes]"
Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
The ramp_reg has not been updated, its default value is 0x0.
Unfortunately, the device id register is writable. So the
CHIP_ID of the device id is changed, it causes probe fail when
reboot or reset.
Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
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Merge tag 'v6.6.36' into lf-6.6.y
This is the 6.6.36 stable release
* tag 'v6.6.36': (192 commits)
Linux 6.6.36
Revert "mm: mmap: allow for the maximum number of bits for randomizing mmap_base by default"
hid: asus: asus_report_fixup: fix potential read out of bounds
...
Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
Conflicts:
Documentation/devicetree/bindings/dma/fsl,edma.yaml
arch/arm64/boot/dts/freescale/imx8qm-mek.dts
drivers/spi/spi-imx.c
[ Upstream commit 4cac29b846 ]
Ramp values are inverted. This caused wrong values written to register
when ramp values were defined in device tree.
Invert values in table to fix this.
Signed-off-by: Kalle Niemi <kaleposti@gmail.com>
Fixes: 1aad39001e ("regulator: Support ROHM BD71815 regulators")
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/ZmmJXtuVJU6RgQAH@latitude5580
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Merge tag 'v6.6.34' into lf-6.6.y
This is the 6.6.34 stable release
* tag 'v6.6.34': (2530 commits)
Linux 6.6.34
smp: Provide 'setup_max_cpus' definition on UP too
selftests: net: more strict check in net_helper
...
Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
Conflicts:
arch/arm64/boot/dts/freescale/imx8-ss-conn.dtsi
drivers/net/ethernet/freescale/fec_ptp.c
drivers/pmdomain/imx/imx8mp-blk-ctrl.c
drivers/usb/dwc3/host.c
tools/perf/util/pmu.c
[ Upstream commit 74b38cd77d ]
According to the TPS6594 PMIC Manual (linked) 8.3.2.1.4 Multi-Phase BUCK
Regulator Configurations section, the PMIC ignores all the other bucks'
except the primary buck's regulator registers. This is BUCK1 for
configurations BUCK12, BUCK123 and BUCK1234 while it is BUCK3 for
BUCK34. Correct the registers mapped for these configurations
accordingly.
Fixes: f17ccc5deb ("regulator: tps6594-regulator: Add driver for TI TPS6594 regulators")
Link: https://www.ti.com/lit/gpn/tps6594-q1
Signed-off-by: Neha Malcom Francis <n-francis@ti.com>
Link: https://msgid.link/r/20240521094758.2190331-1-n-francis@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 1ace99d7c7 ]
The data-sheet for TPS6287x-Q1
https://www.ti.com/lit/ds/symlink/tps62873-q1.pdf
states at chapter 9.3.6.1 Output Voltage Range:
"Note that every change to the VRANGE[1:0] bits must be followed by a
write to the VSET register, even if the value of the VSET[7:0] bits does
not change."
The current implementation of the driver uses the
regulator_set_voltage_sel_pickable_regmap() helper which further uses
regmap_update_bits() to write the VSET-register. The
regmap_update_bits() will not access the hardware if the new register
value is same as old. It is worth noting that this is true also when the
register is marked volatile, which I can't say is wrong because
'read-mnodify-write'-cycle with a volatile register is in any case
something user should carefully consider.
The 'range_applied_by_vsel'-flag in regulator desc was added to force
the vsel register upodates by using regmap_write_bits(). This variant
will always unconditionally write the bits to the hardware.
It is worth noting that the vsel is now forced to be written to the
hardware, whether the range was changed or not. This may cause a
performance drop if users are wrtiting same voltage value repeteadly.
It would be possible to read the range register to determine if it was
changed, but this would be a performance issue for users who don't use
reg cache for vsel.
Always write the VSET register to the hardware regardless the cache.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Fixes: 7b0518fbf2 ("regulator: Add support for TI TPS6287x regulators")
Link: https://msgid.link/r/ZktD50C5twF1EuKu@fedora
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit f4f4276f98 ]
Some PMICs treat the vsel_reg same as apply-bit. Eg, when voltage range
is changed, the new voltage setting is not taking effect until the vsel
register is written.
Add a flag 'range_applied_by_vsel' to the regulator desc to indicate this
behaviour and to force the vsel value to be written to hardware if range
was changed, even if the old selector was same as the new one.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://msgid.link/r/ZktCpcGZdgHWuN_L@fedora
Signed-off-by: Mark Brown <broonie@kernel.org>
Stable-dep-of: 1ace99d7c7 ("regulator: tps6287x: Force writing VSEL bit")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 0f9f7c63c4 ]
Some of the regulators on the BD71828 have common voltage setting for
RUN/SUSPEND/IDLE/LPSR states. The enable control can be set for each
state though.
The driver allows setting the voltage values for these states via
device-tree. As a side effect, setting the voltages for
SUSPEND/IDLE/LPSR will also change the RUN level voltage which is not
desired and can break the system.
The comment in code reflects this behaviour, but it is likely to not
make people any happier. The right thing to do is to allow setting the
enable/disable state at SUSPEND/IDLE/LPSR via device-tree, but to
disallow setting state specific voltages for those regulators.
BUCK1 is a bit different. It only shares the SUSPEND and LPSR state
voltages. The former behaviour of allowing to silently overwrite the
SUSPEND state voltage by LPSR state voltage is also changed here so that
the SUSPEND voltage is prioritized over LPSR voltage.
Prevent setting PMIC state specific voltages for regulators which do not
support it.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Fixes: 522498f8cb ("regulator: bd71828: Basic support for ROHM bd71828 PMIC regulators")
Link: https://msgid.link/r/e1883ae1e3ae5668f1030455d4750923561f3d68.1715848512.git.mazziesaccount@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c748a6d77c ]
In order to introduce a pwm api which can be used from atomic context,
we will need two functions for applying pwm changes:
int pwm_apply_might_sleep(struct pwm *, struct pwm_state *);
int pwm_apply_atomic(struct pwm *, struct pwm_state *);
This commit just deals with renaming pwm_apply_state(), a following
commit will introduce the pwm_apply_atomic() function.
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Stable-dep-of: 974afccd37 ("leds: pwm: Disable PWM when going to suspend")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 68adb581a3 ]
Add MODULE_DEVICE_TABLE(), so the module could be properly autoloaded
based on the alias from of_device_id table.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://msgid.link/r/20240410172615.255424-2-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit ddd3f34c10 ]
Add MODULE_DEVICE_TABLE(), so the module could be properly autoloaded
based on the alias from of_device_id table.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://msgid.link/r/20240410172615.255424-1-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 7ab681dded ]
The regulator IRQ helper requires caller to provide pointer to IRQ name
which is kept in memory by caller. All other data passed to the helper
in the regulator_irq_desc structure is copied. This can cause some
confusion and unnecessary complexity.
Make the regulator_irq_helper() to copy also the provided IRQ name
information so caller can discard the name after the call to
regulator_irq_helper() completes.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://msgid.link/r/ZhJMuUYwaZbBXFGP@drtxq0yyyyyyyyyyyyydy-3.rev.dnainternet.fi
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 2a4b49bb58 upstream.
regulator_get() may sometimes be called more than once for the same
consumer device, something which before commit dbe954d8f1 ("regulator:
core: Avoid debugfs: Directory ... already present! error") resulted in
errors being logged.
A couple of recent commits broke the handling of such cases so that
attributes are now erroneously created in the debugfs root directory the
second time a regulator is requested and the log is filled with errors
like:
debugfs: File 'uA_load' in directory '/' already present!
debugfs: File 'min_uV' in directory '/' already present!
debugfs: File 'max_uV' in directory '/' already present!
debugfs: File 'constraint_flags' in directory '/' already present!
on any further calls.
Fixes: 2715bb11cf ("regulator: core: Fix more error checking for debugfs_create_dir()")
Fixes: 08880713ce ("regulator: core: Streamline debugfs operations")
Cc: stable@vger.kernel.org
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240509133304.8883-1-johan+linaro@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit a469158eaf ]
Add of_match table for "ti,tps65132" compatible string.
This fixes automatic driver loading when using device-tree,
and if built as a module like major linux distributions do.
Signed-off-by: André Apitzsch <git@apitzsch.eu>
Link: https://msgid.link/r/20240325-of_tps65132-v1-1-86a5f7ef4ede@apitzsch.eu
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit d3cf8a1749 ]
The MT6360 regulator binding, the example in the MT6360 mfd binding, and
the devicetree users of those bindings are rightfully declaring MT6360
regulator subnodes with non-capital names, and luckily without using the
deprecated regulator-compatible property.
With this driver declaring capitalized BUCKx/LDOx as of_match string for
the node names, obviously no regulator gets probed: fix that by changing
the MT6360_REGULATOR_DESC macro to add a "match" parameter which gets
assigned to the of_match.
Fixes: d321571d5e ("regulator: mt6360: Add support for MT6360 regulator")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://msgid.link/r/20240409144438.410060-1-angelogioacchino.delregno@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
The callers use pf9453_pmic_write(pf9453, reg, val, mask).
The parameters val and mask order is wrong. Should be
pf9453_pmic_write(pf9453, reg, mask, val).
Adjust the parameters order of calling the pmic write in order
to keep same with the pmic write definition.
Signed-off-by: Joy Zou <joy.zou@nxp.com>
Tested-by: Pengfei Li <pengfei.li_1@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>
[ Upstream commit 531a0c0cdb ]
The userspace consumer can be built as a module but it cannot be
automatically probed as there is no device table to match it up with
device tree nodes.
Add the missing macro so that the module can load automatically.
Fixes: 5c51d4afcf ("regulator: userspace-consumer: Handle regulator-output DT nodes")
Signed-off-by: John Keeping <jkeeping@inmusicbrands.com>
Link: https://msgid.link/r/20240226160554.1453283-1-jkeeping@inmusicbrands.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit a3fa9838e8 ]
The max5970 datasheet gives the impression that IRQ status bits must
be cleared by writing a one to set bits, as those are marked with 'R/C',
however tests showed that a zero must be written.
Fixes an IRQ storm as the interrupt handler actually clears the IRQ
status bits.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Link: https://msgid.link/r/20240130150257.3643657-1-naresh.solanki@9elements.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c92688cac2 ]
Continuous regulators can be configured to operate only in a certain
duty cycle range (for example from 0..91%). Add a check to error out if
the duty cycle translates to an unsupported (or out of range) voltage.
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://msgid.link/r/20240113224628.377993-2-martin.blumenstingl@googlemail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit a67e1f0bd4 ]
We can't use devm_platform_ioremap_resource_byname() to remap the
interrupt register that can be shared between
regulator-abb-{ivahd,dspeve,gpu} drivers instances.
The combined helper introduce a call to devm_request_mem_region() that
creates a new busy resource region on PRM_IRQSTATUS_MPU register
(0x4ae06010). The first devm_request_mem_region() call succeeds for
regulator-abb-ivahd but fails for the two other regulator-abb-dspeve
and regulator-abb-gpu.
# cat /proc/iomem | grep -i 4ae06
4ae06010-4ae06013 : 4ae07e34.regulator-abb-ivahd int-address
4ae06014-4ae06017 : 4ae07ddc.regulator-abb-mpu int-address
regulator-abb-dspeve and regulator-abb-gpu are missing due to
devm_request_mem_region() failure (EBUSY):
[ 1.326660] ti_abb 4ae07e30.regulator-abb-dspeve: can't request region for resource [mem 0x4ae06010-0x4ae06013]
[ 1.326660] ti_abb: probe of 4ae07e30.regulator-abb-dspeve failed with error -16
[ 1.327239] ti_abb 4ae07de4.regulator-abb-gpu: can't request region for resource [mem 0x4ae06010-0x4ae06013]
[ 1.327270] ti_abb: probe of 4ae07de4.regulator-abb-gpu failed with error -16
>From arm/boot/dts/dra7.dtsi:
The abb_mpu is the only instance using its own interrupt register:
(0x4ae06014) PRM_IRQSTATUS_MPU_2, ABB_MPU_DONE_ST (bit 7)
The other tree instances (abb_ivahd, abb_dspeve, abb_gpu) share
PRM_IRQSTATUS_MPU register (0x4ae06010) but use different bits
ABB_IVA_DONE_ST (bit 30), ABB_DSPEVE_DONE_ST( bit 29) and
ABB_GPU_DONE_ST (but 28).
The commit b36c6b1887 ("regulator: ti-abb: Make use of the helper
function devm_ioremap related") overlooked the following comment
implicitly explaining why devm_ioremap() is used in this case:
/*
* We may have shared interrupt register offsets which are
* write-1-to-clear between domains ensuring exclusivity.
*/
Fixes and partially reverts commit b36c6b1887 ("regulator: ti-abb:
Make use of the helper function devm_ioremap related").
Improve the existing comment to avoid further conversion to
devm_platform_ioremap_resource_byname().
Fixes: b36c6b1887 ("regulator: ti-abb: Make use of the helper function devm_ioremap related")
Signed-off-by: Romain Naour <romain.naour@skf.com>
Reviewed-by: Yoann Congal <yoann.congal@smile.fr>
Link: https://msgid.link/r/20240123111456.739381-1-romain.naour@smile.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 7993d3a9c3 ]
The use_count of a regulator should only be incremented when the
enable_count changes from 0 to 1. Similarly, the use_count should
only be decremented when the enable_count changes from 1 to 0.
In the previous implementation, use_count was sometimes decremented
to 0 when some consumer called unbalanced disable,
leading to unexpected disable even the regulator is enabled by
other consumers. With this change, the use_count accurately reflects
the number of users which the regulator is enabled.
This should make things more robust in the case where a consumer does
leak references.
Signed-off-by: Rui Zhang <zr.zhang@vivo.com>
Link: https://lore.kernel.org/r/20231103074231.8031-1-zr.zhang@vivo.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
add variable initialization.
Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>
This is the 6.6.2 stable release
* tag 'v6.6.2': (634 commits)
Linux 6.6.2
btrfs: make found_logical_ret parameter mandatory for function queue_scrub_stripe()
btrfs: use u64 for buffer sizes in the tree search ioctls
...
Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
Conflicts:
drivers/clk/imx/clk-imx8mq.c
drivers/clk/imx/clk-imx8qxp.c
drivers/media/i2c/ov5640.c
drivers/misc/pci_endpoint_test.c
Modify the variable checked so that the code logic is clearer.
Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
[ Upstream commit bc00d9f381 ]
The type of the smps4 regulator from pm8550ve is actually FTSMPS525
medium voltage. So fix it accordingly.
Fixes: e6e3776d68 ("regulator: qcom-rpmh: Add support for PM8550 regulators")
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20231024134626.2364426-1-abel.vesa@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 7442edec72 ]
The MT6358 and MT6366 PMICs, and likely many others from MediaTek, have
a chip ID register, making the chip semi-discoverable.
The driver currently supports two PMICs and expects to be probed on one
or the other. It does not account for incorrect mfd driver entries or
device trees. While these should not happen, if they do, it could be
catastrophic for the device. The driver should be sure the hardware is
what it expects.
Make the driver fail to probe if the chip ID presented is not a known
one.
Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Fixes: f0e3c6261a ("regulator: mt6366: Add support for MT6366 regulator")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230913082919.1631287-2-wenst@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
The new pmic trimed BUCK1. So need to modify the range.
The default value of Toff_Deb is used to distinguish the old and new pmic.
Reviewed-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Joy Zou <joy.zou@nxp.com>
The callback trace:
fp9931_regulator_probe
-> fp9931_pmic_dt_parse_pdata
-> of_get_named_gpio
In fp9931_pmic_dt_parse_pdata function, it returns -EINVAL (-22) when gpio is
not ready which caused probe failure as following messages. The right way to
respond to gpio not-ready case should pass return value of of_get_named_gpio
to the caller and then do defer probe for pmic driver. This patch fixed it.
[ 4.078902] fp9931-pmic fp9931-pmic: no epdc pmic wakeup pin available
[ 4.085496] fp9931-pmic: probe of fp9931-pmic failed with error -22
Signed-off-by: Robby Cai <robby.cai@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
The FP9931 includes different kinds of regulators: LDO, Boost
Converter, Buck-Boost Converter, Charge Pump and VCOM Buffer.
The typical voltages power on sequence is:
V3P3 -> VGL -> VNEG -> VGH -> VPOS -> VCOM
The DISPLAY regulator is a virtual one which behaves like a
switch to trigger the voltages power on or power down sequence
except V3P3, since it must be switched on or off manually.
Signed-off-by: Robby Cai <robby.cai@nxp.com>
Signed-off-by: Fancy Fang <chen.fang@nxp.com>
Reviewed-by: G.n. Zhou <guoniu.zhou@nxp.com>
BuckX enable mode
00b = OFF
01b = ON by PMIC_ON_REQ = H
10b = ON by PMIC_ON_REQ = H && PMIC_STBY_REQ = L
11b = Always ON
For such enable mode, enable_value should be clearly set in requlator desc,
00/11 is not enough, correct it now for different bucks. For example, buck2
is designed for vddarm which could be off in 'PMIC_STBY_REQ = H' after kernel
enter suspend, so should be set '10b' as ON, while others is '01b' as ON.
All are the same as the default setting which means bucks no need to be
enabled again during kernel boot even if they have been enabled already after
pmic on.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Anson Huang <anson.huang@nxp.com>
Take account of bypass case where min_dropout_uV is 0 to adjust external
supply voltage correctly, otherwise, external pmic voltage will never be
in ldo bypass mode.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Anson Huang <Anson.Huang@nxp.com>
In bypass mode, the anatop digital regulators do not have any minimum
dropout value (the input voltage is equal to the output voltage according
to documentation).
Having a min dropout value of 125mV will lead to an increased voltage
for PMIC supplies.
Only set minimum dropout value for ldo enabled mode.
Signed-off-by: Irina Tirdea <irina.tirdea@nxp.com>
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Anson Huang <Anson.Huang@nxp.com>
(cherry picked from commit 9092e24ba0dce713e5478c0f925168b00e9e83cb)
Some registers on pfuze3000 will lost after exit from LPSR, need restore them,
otherwise system may reboot with below command after system enter LPSR one time:
root@imx7d_all:~# echo enabled > /sys/class/tty/ttymxc0/power/wakeup
root@imx7d_all:~# echo mem > /sys/power/state
because LDOGCTL not recover as 1. Add 'fsl,lpsr-mode' property to this case,
please add this property if your board support LPSR mode as imx7d-12x12-lpddr3-arm2
board.
Signed-off-by: Robin Gong <b38343@freescale.com>
Reviewed-by: Anson Huang <Anson.Huang@nxp.com>
(cherry picked from commit 4aa2a2a928)
[ Aisheng: change dt binding part to json schema ]
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
At some systems, the pinctrl setting will be lost or needs to
set as "sleep" state to save power consumption. So, we need to
configure pinctrl as "sleep" state when system enters suspend,
and as "default" state after system resumes. In this way, the
pinctrl value can be recovered as "default" state after resuming.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
The Linux kernel regulator core implementation does not accept negative
voltage values; all negative values are treated as errors.
The problem with the EPDC is that the panel uses a negative voltage
regulator which fails to be enabled by the regulator core. This issue has
slipped up until the 4.9 rebase because the voltage range [min, max] was
checked against only when min = max. This has been fixed in 4.9, resulting
in errors in the VCOM regulator driver.
The fix is to use the negative values when communicating with the hardware,
but send only positive values to the regulator core.
This patch sends the absolute value to the regulator core and transforms
the received value (from the regulator core) to negative one before sending
it to hardware.
Fix device tree to deal with negative voltage regulator values by setting
min_value = -real_max_value and vice versa. Boards affected:
- imx6dl-sabresd
- imx6ull-14x14-ddr3-arm2
- imx7d-12x12-lpddr3-arm2
- imx7d-sdb
- imx6sll-evk
- imx6sl-evk
- imx6sll-lpddr3-arm2
Signed-off-by: Cristina Ciocan <cristina-mihaela.ciocan@nxp.com>
[Arul: Fix merge conflicts]
Signed-off-by: Arulpandiyan Vadivel <arulpandiyan_vadivel@mentor.com>
[Robby: split original patch to driver and dts part. this is driver part.]
Signed-off-by: Robby Cai <robby.cai@nxp.com>
Add PMIC 'MAX17135' module drivers to 4.1.y kernel. These are necessary
to supply power for E-ink panel display functions.
Signed-off-by: Robby Cai <r63905@freescale.com>
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
