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| author | Erick Chen <erick.chen@spreadtrum.com> | 2017-12-05 14:35:45 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-12-05 12:35:09 +0000 |
| commit | 5149b685b122d3bee78bd3403997f9ddb1223f4a (patch) | |
| tree | c17cc7d5710f778f3a6a6dea48f0f6797b7856a2 | |
| parent | 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff) | |
| download | talos-obmc-linux-5149b685b122d3bee78bd3403997f9ddb1223f4a.tar.gz talos-obmc-linux-5149b685b122d3bee78bd3403997f9ddb1223f4a.zip | |
regulator: Add Spreadtrum SC2731 regulator documentation
This patch adds support for the Spreadtrum SC2731
voltage regulator device.
Signed-off-by: Erick Chen <erick.chen@spreadtrum.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt b/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt new file mode 100644 index 000000000000..63dc07877cd6 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt @@ -0,0 +1,43 @@ +Spreadtrum SC2731 Voltage regulators + +The SC2731 integrates low-voltage and low quiescent current DCDC/LDO. +14 LDO and 3 DCDCs are designed for external use. All DCDCs/LDOs have +their own bypass (power-down) control signals. External tantalum or MLCC +ceramic capacitors are recommended to use with these LDOs. + +Required properties: + - compatible: should be "sprd,sc27xx-regulator". + +List of regulators provided by this controller. It is named according to +its regulator type, BUCK_<name> and LDO_<name>. The definition for each +of these nodes is defined using the standard binding for regulators at +Documentation/devicetree/bindings/regulator/regulator.txt. + +The valid names for regulators are: +BUCK: + BUCK_CPU0, BUCK_CPU1, BUCK_RF +LDO: + LDO_CAMA0, LDO_CAMA1, LDO_CAMMOT, LDO_VLDO, LDO_EMMCCORE, LDO_SDCORE, + LDO_SDIO, LDO_WIFIPA, LDO_USB33, LDO_CAMD0, LDO_CAMD1, LDO_CON, + LDO_CAMIO, LDO_SRAM + +Example: + regulators { + compatible = "sprd,sc27xx-regulator"; + + vddarm0: BUCK_CPU0 { + regulator-name = "vddarm0"; + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <1996875>; + regulator-ramp-delay = <25000>; + regulator-always-on; + }; + + vddcama0: LDO_CAMA0 { + regulator-name = "vddcama0"; + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <3750000>; + regulator-enable-ramp-delay = <100>; + }; + ... + }; |
