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[ Upstream commit d3fcf276b501a82d4504fd5b1ed40249546530d1 ]
The TPS65214 PMIC variant has a LOCK_REG register that prevents writes to
nearly all registers when locked. Unlock the registers at probe time and
leave them unlocked permanently.
This approach is justified because:
- Register locking is very uncommon in typical system operation
- No code path is expected to lock the registers during runtime
- Adding a custom regmap write function would add overhead to every
register write, including voltage changes triggered by CPU OPP
transitions from the cpufreq governor which could happen quite
frequently
Cc: stable@vger.kernel.org
Fixes: 7947219ab1a2d ("mfd: tps65219: Add support for TI TPS65214 PMIC")
Reviewed-by: Andrew Davis <afd@ti.com>
Signed-off-by: Kory Maincent (TI.com) <kory.maincent@bootlin.com>
Link: https://patch.msgid.link/20251218-fix_tps65219-v5-1-8bb511417f3a@bootlin.com
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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The 'chip_id' field from 'struct tps65219' is unused.
Remove it.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/f20443e6e13b0b101648a41010a19ee56589fa0b.1750530460.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Lee Jones <lee@kernel.org>
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Since commit 3df4c6367520 ("mfd: tps65219: Add support for soft shutdown
via sys-off API"), the 'nb' field from 'struct tps65219' is unused.
Remove it.
Also remove the now useless #include <linux/notifier.h> for the same
reason.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/8a264c3a92b8e62c1dadd374f2685030e042eb08.1750530460.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Lee Jones <lee@kernel.org>
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Use chip ID and chip_data struct to differentiate between 3 PMIC devices in
probe(). Add TPS65214 resource information. Update descriptions and
copyright information to reflect the driver supports 3 PMIC devices.
Signed-off-by: Shree Ramamoorthy <s-ramamoorthy@ti.com>
Link: https://lore.kernel.org/r/20250206173725.386720-6-s-ramamoorthy@ti.com
Signed-off-by: Lee Jones <lee@kernel.org>
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Use chip ID and chip_data struct to differentiate between devices in
probe(). Add TPS65215 resource information. Update descriptions and
copyright information to reflect the driver supports 2 PMIC devices.
Signed-off-by: Shree Ramamoorthy <s-ramamoorthy@ti.com>
Link: https://lore.kernel.org/r/20250206173725.386720-5-s-ramamoorthy@ti.com
Signed-off-by: Lee Jones <lee@kernel.org>
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These macros are not used by the driver, and the structs are accounted
for with the addition of the linux/regmap.h file.
Signed-off-by: Shree Ramamoorthy <s-ramamoorthy@ti.com>
Link: https://lore.kernel.org/r/20241217204935.1012106-3-s-ramamoorthy@ti.com
Signed-off-by: Lee Jones <lee@kernel.org>
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The TPS65219 is a power management IC PMIC designed to supply a wide
range of SoCs in both portable and stationary applications. Any SoC can
control TPS65219 over a standard I2C interface.
It contains the following components:
- Regulators.
- Over Temperature warning and Shut down.
- GPIOs
- Multi Function Pins (MFP)
- power-button
This patch adds support for tps65219 PMIC. At this time only
the functionalities listed below are made available:
- Regulators probe and functionalities
- warm and cold reset support
- SW shutdown support
- Regulator warnings via IRQs
- Power-button via IRQ
Signed-off-by: Jerome Neanne <jneanne@baylibre.com>
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221104152311.1098603-5-jneanne@baylibre.com
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