提交 5d1d147f 编写于 作者: K Krzysztof Kozlowski 提交者: Lee Jones

dt-bindings: regulator/mfd: Reorganize S2MPA01 bindings

The mfd/s2mpa01.txt duplicates some of the information about bindings
with old mfd/s2mps11.txt. Now common part exists entirely in
mfd/samsung,sec-core.txt so:
 - add company prefix to file name (regulator/samsung,s2mpa01.txt),
 - remove duplicated information,
 - reorganize the contents to match style of
   regulator/samsung,s2mps11.txt.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: NMark Brown <broonie@kernel.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
上级 27383ca9
......@@ -4,7 +4,7 @@ Binding for Samsung S2M and S5M family multi-function device
This is a part of device tree bindings for S2M and S5M family multi-function
devices.
The Samsung S2MPS11/13/14/15, S2MPU02 and S5M8767 is a family
The Samsung S2MPA01, S2MPS11/13/14/15, S2MPU02 and S5M8767 is a family
of multi-function devices which include voltage and current regulators, RTC,
charger controller, clock outputs and other sub-blocks. It is interfaced
to the host controller using an I2C interface. Each sub-block is usually
......@@ -13,6 +13,7 @@ addressed by the host system using different I2C slave addresses.
This document describes bindings for main device node. Optional sub-blocks
must be a sub-nodes to it. Bindings for them can be found in:
- bindings/regulator/samsung,s2mpa01.txt
- bindings/regulator/samsung,s2mps11.txt
- bindings/regulator/samsung,s5m8767.txt
- bindings/clock/samsung,s2mps11.txt
......@@ -20,6 +21,7 @@ must be a sub-nodes to it. Bindings for them can be found in:
Required properties:
- compatible: Should be one of the following
- "samsung,s2mpa01-pmic",
- "samsung,s2mps11-pmic",
- "samsung,s2mps13-pmic",
- "samsung,s2mps14-pmic",
......
Binding for Samsung S2MPA01 regulator block
===========================================
* Samsung S2MPA01 Voltage and Current Regulator
This is a part of device tree bindings for S2M family multi-function devices.
More information can be found in bindings/mfd/sec-core.txt file.
The Samsung S2MPA01 is a multi-function device which includes high
efficiency buck converters including Dual-Phase buck converter, various LDOs,
and an RTC. It is interfaced to the host controller using an I2C interface.
Each sub-block is addressed by the host system using different I2C slave
addresses.
The S2MPA01 device provide buck and LDO regulators.
Required properties:
- compatible: Should be "samsung,s2mpa01-pmic".
- reg: Specifies the I2C slave address of the PMIC block. It should be 0x66.
To register these with regulator framework instantiate under main device node
a sub-node named "regulators" with more sub-nodes for each regulator using the
common regulator binding documented in:
- Documentation/devicetree/bindings/regulator/regulator.txt
Optional properties:
- interrupt-parent: Specifies the phandle of the interrupt controller to which
the interrupts from s2mpa01 are delivered to.
- interrupts: An interrupt specifier for the sole interrupt generated by the
device.
Optional nodes:
- regulators: The regulators of s2mpa01 that have to be instantiated should be
included in a sub-node named 'regulators'. Regulator nodes and constraints
included in this sub-node use the standard regulator bindings which are
documented elsewhere.
Properties for BUCK regulator nodes:
- regulator-ramp-delay: ramp delay in uV/us. May be 6250, 12500
(default), 25000, or 50000. May be 0 for disabling the ramp delay on
BUCK{1,2,3,4}.
In the absence of the regulator-ramp-delay property, the default ramp
delay will be used.
NOTE: Some BUCKs share the ramp rate setting i.e. same ramp value will be set
for a particular group of BUCKs. So provide same regulator-ramp-delay=<value>.
The following BUCKs share ramp settings:
* 1 and 6
* 2 and 4
* 8, 9, and 10
The following are the names of the regulators that the s2mpa01 PMIC block
supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
as per the datasheet of s2mpa01.
Names of regulators supported by S2MPA01 device:
- LDOn
- valid values for n are 1 to 26
- Example: LDO1, LD02, LDO26
- BUCKn
- valid values for n are 1 to 10.
- Example: BUCK1, BUCK2, BUCK9
Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
as per the datasheet of device.
Optional properties of buck regulator nodes under "regulators" sub-node:
- regulator-ramp-delay: ramp delay in uV/us. May be 6250, 12500
(default), 25000, or 50000. May be 0 for disabling the ramp delay on
BUCK{1,2,3,4}.
In the absence of the regulator-ramp-delay property, the default ramp
delay will be used.
Note: Some bucks share the ramp rate setting i.e. same ramp value
will be set for a particular group of bucks so provide the same
regulator-ramp-delay value for them.
Groups sharing ramp rate:
- buck{1,6},
- buck{2,4},
- buck{8,9,10}.
Example:
......
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