292 lines
9.0 KiB
YAML
292 lines
9.0 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/regulator/qcom,qpnp-lcdb-regulator.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm Technologies, Inc. QPNP LCDB (LCD Bias) Regulator
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maintainers:
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- Jishnu Prakash <quic_jprakash@quicinc.com>
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description: |
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QPNP LCDB module provides voltage bias to the LCD display panel. The biases
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are positive (VDISP - supported by LDO) and negative (VDISN - supported by
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NCP) voltage signals. The module also supports TTW (touch-to-wake) capability.
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properties:
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compatible:
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enum:
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- qcom,qpnp-lcdb-regulator
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- qcom,lcdb-pm660
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- qcom,lcdb-pmi632
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- qcom,lcdb-pm6150l
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- qcom,lcdb-pm7325b
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reg:
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description: Base address of the LCDB SPMI peripheral.
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qcom,voltage-step-ramp:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Required only if the voltage needs to be set in the
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steps of 500 mV starting from the 4500 mV. This needs
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to be enabled only on platforms where voltage needs to
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be ramped up with multiple steps.
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qcom,pwrdn-delay-ms:
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description: Required to control the LDO power down delay.
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Possible values are 0, 1, 4, 8.
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qcom,pwrup-delay-ms:
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description: Required to control the LDO power up delay.
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Possible values are 0, 1, 4, 8.
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qcom,pwrup-config:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Controls the order of powering up BOOST, LDO AND NCP
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blocks. Appilcable for PM7325B. Possible values are 0, 1, 2, 3, 4.
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0 - Boost, LDO, NCP
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1 - Boost, LDO
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2 - Boost, NCP
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3 - Boost only
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4 - Boost, NCP, LDO
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qcom,ttw-enable:
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type: boolean
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description: Touch to wake-up support enabled.
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qcom,ttw-mode-sw:
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type: boolean
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description: Touch to wake supported in SW mode.
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If not defined, ttw is enabled by HW pin.
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qcom,attw-toff-ms:
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maxItems: 1
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description: Off time (in mS) for the VDISP/VDISN signals.
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Possible values are 4, 8, 16, 32.
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qcom,attw-ton-ms:
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maxItems: 1
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description: ON time (in mS) for the VDISP/VDISN signals.
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Possible values are 4, 8, 16, 32.
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patternProperties:
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"^lcdb_[0-9a-f]+$":
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type: object
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$ref: /schemas/regulator/regulator.yaml#
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unevaluatedProperties: false
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description: LDO and NCP bias common properties
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properties:
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label:
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description: |
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A string used to describe the bias type.
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Possible values are ldo, ncp, bst.
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$ref: /schemas/types.yaml#/definitions/string
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regulator-name:
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$ref: /schemas/types.yaml#/definitions/string
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description: |
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Load current in uA which corresponds to the minimum load
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which requires the regulator to be in high power mode.
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regulator-min-microvolt:
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description: |
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Minimum voltage (in uV) supported by the bias.
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regulator-max-microvolt:
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description: |
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Maximum voltage (in uV) supported by the bias.
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"^lcdb_ldo_[0-9a-f]+$":
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type: object
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$ref: /schemas/regulator/regulator.yaml#
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unevaluatedProperties: false
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description: LDO bias specific properties
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properties:
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qcom,ldo-voltage-mv:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Voltage (in mV) progammed for the LDO (VDISP).
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Possile values are 4000mV to 6000mV. The range
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4000mV to 4900mV is in 100mV steps and 4900mV to
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6000mV is in 50mV steps.
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qcom,ldo-pd:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Pull-down configuration of LDO. Possible values are
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1 - Enable pull-down
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0 - Disable pull-down
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qcom,ldo-pd-strength:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Pull-down strength. Possible values are
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0 - Weak pull-down
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1 - Strong pull-down
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qcom,ldo-ilim-ma:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Current limit (in mA) of the LDO bias. For PM7325B, possible
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values are 35, 175, 280, 420, 455, 595, 700, 840. For other PMICs,
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possible values are 110, 160, 210, 260, 310, 360, 410, 460.
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qcom,ldo-soft-start-us:
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description: |
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Soft-start time (in uS) of the LDO bias.
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Possible values are 0, 500, 1000, 2000.
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"^lcdb_ncp_[0-9a-f]+$":
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type: object
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$ref: /schemas/regulator/regulator.yaml#
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unevaluatedProperties: false
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description: NCP bias specific properties
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properties:
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qcom,ncp-voltage-mv:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Voltage (in mV) progammed for the NCP (VDISN).
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Possile values are 4000mV to 6000mV. The range
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4000mV to 4900mV is in 100mV steps and 4900mV to
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6000mV is in 50mV steps.
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qcom,ncp-pd:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Pull-down configuration of NCP. Possible values are
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1 - Enable pull-down
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0 - Disable pull-down
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qcom,ncp-pd-strength:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Pull-down strength. Possible values are
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0 - Weak pull-down
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1 - Strong pull-down
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qcom,ncp-ilim-ma:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Current limit (in mA) of the NCP bias. For PM7325B, possible
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values are 700, 80, 900, 1000. For other PMICs, possible values
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are 260, 460, 640, 810.
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qcom,ncp-soft-start-us:
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description: |
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Soft-start time (in uS) of the NCP bias.
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Possible values are 0, 500, 1000, 2000.
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"^lcdb_bst[0-9a-f]+$":
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type: object
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$ref: /schemas/regulator/regulator.yaml#
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unevaluatedProperties: false
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description: BOOST subnode specific properties
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properties:
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qcom,bst-pd:
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type: boolean
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description: Pull-down configuration of BOOST. Possible values are
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1 - Enable pull-down
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0 - Disable pull-down
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qcom,bst-pd-strength:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Pull-down strength. Possible values are
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0 - Weak pull-down
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1 - Strong pull-down
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qcom,bst-ps:
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description: |
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Pulse-skip configuration for boost. Possible values are
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1 - Enable Pulse-skip
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0 - Disable Pulse-skip
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qcom,bst-ps-threshold-ma:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Current threshold (in mA) at which pulse-skip is entered.
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Possible values are 50, 60, 70, 80.
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qcom,bst-ps-threshold-mv:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Current threshold (in mv) at which pulse-skip is entered.
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Applicable for PM7325B. Possible values are 360, 384, 408, 432,
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456, 480, 504, 528.
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qcom,bst-ilim-ma:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Current limit (in mA) of the BOOST rail. For PM7325B, possible
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possible values are 1130 to 2250mA in 160mA steps. For other PMICs,
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possible values are 200 to 1600mA in 200mA steps.
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qcom,bst-headroom-mv:
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$ref: /schemas/types.yaml#/definitions/uint16
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description: |
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Headroom of the boost (in mV). If not specified, then the
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default value is 200 mV (PM660L) or 150 mV (for PM8150L or PMI632).
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required:
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- label
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- regulator-name
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- regulator-min-microvolt
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- regulator-max-microvolt
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required:
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- compatible
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- reg
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- qcom,ttw-enable
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additionalProperties: false
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examples:
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- |
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pm660l_lcdb: qpnp-lcdb@ec00 {
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compatible = "qcom,qpnp-lcdb-regulator";
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#address-cells = <1>;
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#size-cells = <1>;
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reg = <0xec00 0x100>;
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qcom,ttw-enable;
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lcdb_ldo_vreg: ldo {
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label = "ldo";
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regulator-name = "lcdb_ldo";
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regulator-min-microvolt = <4000000>;
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regulator-max-microvolt = <6000000>;
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qcom,ldo-voltage-mv = <5400>;
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qcom,ldo-pd = <1>;
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qcom,ldo-pd-strength = <1>;
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};
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lcdb_ncp_vreg: ncp {
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label = "ncp";
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regulator-name = "lcdb_ncp";
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regulator-min-microvolt = <4000000>;
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regulator-max-microvolt = <6000000>;
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qcom,ncp-voltage-mv = <5400>;
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qcom,ncp-pd = <1>;
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qcom,ncp-pd-strength = <1>;
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};
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lcdb_bst: bst {
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label = "bst";
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qcom,bst-pd = <1>;
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qcom,bst-pd-strength = <1>;
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qcom,bst-ps = <1>;
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qcom,bst-ps-threshold-ma = <50>;
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qcom,bst-headroom-mv = <200>;
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};
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};
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