3977214ccf
Remove the force-low-pwm-size property and add the mid-res-support property. PM6450 does not have support for 76.8Mhz clock source, but PM6450 has the same subtype which detects high resolution support. Add medium resolution support which removes 76.8Mhz support and uses the other 3 clock sources. Change-Id: I8ba5f28c441ddab5321a7ba24b09424c7f31b538 Signed-off-by: Shilpa Suresh <quic_c_sbsure@quicinc.com>
366 lines
12 KiB
YAML
366 lines
12 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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$id: http://devicetree.org/schemas/pwm/qcom,pwm-qti-lpg.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm Technologies, Inc. Light Pulse Generator
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maintainers:
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- Subbaraman Narayanamurthy <quic_subbaram@quicinc.com>
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description: |
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This binding document describes the properties of LPG (Light Pulse Generator)
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device module in Qualcomm Technologies, Inc. PMIC chips.
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properties:
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compatible:
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const: qcom,pwm-lpg
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reg:
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minItems: 1
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maxItems: 2
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description: |
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Register base for LPG and LUT modules.
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reg-names:
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oneOf:
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- const: lpg-base
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- items:
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- const: lpg-base
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- const: lut-base
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"#pwm-cells":
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const: 2
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qcom,num-lpg-channels:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The number of the consecutive LPG/PWM channels in the chip.
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nvmem-names:
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description: |
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The nvmem device name(s) for the SDAM module(s) where the
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LUT pattern data is stored. This property is required
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only when LUT mode is supported with a SDAM module
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instead of a LUT module. It can take the following
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mutually exclusive sets of values
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oneOf:
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- const: ppg_sdam
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- items:
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- const: lut_sdam
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- const: lpg_chan_sdam
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nvmem:
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minItems: 1
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maxItems: 2
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description: |
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Phandle(s) of the nvmem device(s) to access the LUT stored
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in the SDAM module(s). This property is required only when
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LUT mode is supported and the LUT pattern is stored in
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SDAM modules instead of a LUT module.
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qcom,pbs-client:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Phandle of the PBS client used for sending the PBS
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trigger. This property is required when LUT mode is
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supported and the LUT pattern is stored in a single SDAM
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module (not two) instead of a LUT module.
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qcom,lut-sdam-base:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The register base of the LUT entries stored in SDAM. This
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property is required only when LUT mode is supported and
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the LUT pattern is stored in a SDAM module instead of a
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LUT module.
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qcom,lut-patterns:
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description: |
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Duty ratios in percentages for LPG working at LUT mode.
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These duty ratios will be translated into PWM values
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and stored in LUT or SDAM module shared for all LPG
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channels. The LUT module has resource to store 47 PWM
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values at max while SDAM module can store up to 64 PWM
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values. This property is required if any LPG channels
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support LUT mode.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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maxItems: 64
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qcom,mid-res-support:
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description: |
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The flag to indicate support for medium resolution pwm
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for PMICs where the subtype detects high resolution, but
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the high resolution clock source 76.8Mz is not supported.
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This flag will ensure removal of 76.8MHz clock support and
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usage of the other 3 clock sources.
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type: boolean
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required:
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- compatible
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- reg
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- reg-names
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- "#pwm-cells"
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- qcom,num-lpg-channels
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patternProperties:
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"^lpg@[0-9a-f]$":
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type: object
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$ref: pwm.yaml#
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unevaluatedProperties: false
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properties:
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qcom,lpg-chan-id:
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minimum: 1
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maximum: 8
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The LPG channel's hardware ID indexed from 1. Allowed
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range is 1 - 8. Maximum value depends on the number of
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channels supported on PMIC. Cannot specify this property
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for a channel that is PFM enabled.
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qcom,lpg-sdam-base:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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Register base address for LPG configuration in SDAM for
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the LPG channel specified under "qcom,lpg-chan-id".
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This property is required if LUT mode is supported with
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a SDAM module.
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qcom,ramp-step-ms:
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description: |
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The step duration in milliseconds for LPG staying at each
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duty specified in the LUT pattern. Allowed range
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1 - 511 when LUT module is used, and 8 - 2000 when SDAM is used.
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qcom,ramp-high-index:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The high index of the LUT pattern where LPG ends up
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ramping to. Allowed range 1 - 47 when LUT module
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is used, and 1 - 64 when SDAM module is used.
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qcom,ramp-low-index:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The low index of the LUT pattern from where LPG begins
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ramping from. The ramp-low-index should be always less
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than ramp-high-index when SDAM module is used. Allowed
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range 0 - 46 when LUT module is used, and 0 - 63 when
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SDAM module is used.
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qcom,ramp-pattern-repeat:
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description: |
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The flag to specify if LPG would be ramping with the LUT
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pattern repeatedly.
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type: boolean
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qcom,ramp-pause-hi-count:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The number of step counts for which the LPG will continue
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to hold the output after it has ramped up to the high
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index of the LUT. Allowed range 0 - 254 if SDAM is used.
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qcom,ramp-pause-lo-count:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The number of step counts for which the LPG will continue
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to hold the output after it has ramped down to the low
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index of the LUT. Allowed range 0 - 254 if SDAM is used.
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qcom,ramp-from-low-to-high:
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description: |
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The flag to specify the LPG ramping direction. The ramping
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direction is from low index to high index of the LUT
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pattern if it's specified. This property is not required
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when SDAM module is used.
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type: boolean
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required:
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- qcom,lpg-chan-id
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- qcom,ramp-step-ms
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- qcom,ramp-high-index
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- qcom,ramp-low-index
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allOf:
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- if:
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properties:
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nvmem: true
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then:
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patternProperties:
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"^lpg@[0-9a-f]$":
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properties:
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qcom,lpg-sdam-base: true
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qcom,ramp-step-ms:
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minimum: 8
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maximum: 2000
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qcom,ramp-high-index:
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minimum: 1
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maximum: 64
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qcom,ramp-low-index:
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minimum: 0
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maximum: 63
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qcom,ramp-pause-lo-count:
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minimum: 0
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maximum: 254
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qcom,ramp-pause-hi-count:
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minimum: 0
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maximum: 254
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else:
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patternProperties:
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"^lpg@[0-9a-f]$":
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properties:
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qcom,lpg-sdam-base: false
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qcom,ramp-step-ms:
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minimum: 1
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maximum: 511
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qcom,ramp-high-index:
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minimum: 1
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maximum: 47
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qcom,ramp-low-index:
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minimum: 0
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maximum: 46
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additionalProperties: false
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examples:
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- |
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pm8150l_lpg: lpg@b100 {
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compatible = "qcom,pwm-lpg";
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reg = <0xb100>, <0xb000>;
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reg-names = "lpg-base", "lut-base";
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qcom,num-lpg-channels = <6>;
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#pwm-cells = <2>;
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qcom,lut-patterns = <0 14 28 42 56 70 84 100
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100 84 70 56 42 28 14 0>;
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lpg@1 {
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qcom,lpg-chan-id = <1>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <15>;
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qcom,ramp-from-low-to-high;
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qcom,ramp-pattern-repeat;
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};
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lpg@2 {
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qcom,lpg-chan-id = <2>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <15>;
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qcom,ramp-from-low-to-high;
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qcom,ramp-pattern-repeat;
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};
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lpg@3 {
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qcom,lpg-chan-id = <3>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <15>;
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qcom,ramp-from-low-to-high;
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qcom,ramp-pattern-repeat;
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};
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};
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- |
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pmi632_lpg: lpg@b100 {
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compatible = "qcom,pwm-lpg";
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reg = <0xb100>;
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reg-names = "lpg-base";
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qcom,num-lpg-channels = <3>;
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#pwm-cells = <2>;
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nvmem-names = "ppg_sdam";
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nvmem = <&sdam7>;
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qcom,pbs-client = <&pbs_client_3>;
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qcom,lut-sdam-base = <0x80>;
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qcom,lut-patterns = <0 14 28 42 56 70 84 100
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100 84 70 56 42 28 14 0>;
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lpg@1 {
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qcom,lpg-sdam-base = <0x48>;
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qcom,lpg-chan-id = <1>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <15>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-pattern-repeat;
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};
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lpg@2 {
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qcom,lpg-sdam-base = <0x56>;
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qcom,lpg-chan-id = <2>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <15>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-pattern-repeat;
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};
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lpg@3 {
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qcom,lpg-sdam-base = <0x64>;
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qcom,lpg-chan-id = <3>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <15>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-pattern-repeat;
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};
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};
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- |
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pm8350c_pwm_1: pwms@e800 {
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compatible = "qcom,pwm-lpg";
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reg = <0xe800>;
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reg-names = "lpg-base";
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#pwm-cells = <2>;
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qcom,num-lpg-channels = <3>;
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nvmem = <&pmk8350_sdam_21 &pmk8350_sdam_22>;
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nvmem-names = "lpg_chan_sdam", "lut_sdam";
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qcom,lut-sdam-base = <0x45>;
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qcom,lut-patterns = <0 10 20 30 40 50 60 70 80 90 100
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90 80 70 60 50 40 30 20 10 0>;
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lpg@1 {
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qcom,lpg-sdam-base = <0x48>;
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qcom,lpg-chan-id = <1>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <19>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-pattern-repeat;
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};
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lpg@2 {
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qcom,lpg-sdam-base = <0x56>;
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qcom,lpg-chan-id = <2>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <19>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-pattern-repeat;
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};
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lpg@3 {
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qcom,lpg-sdam-base = <0x64>;
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qcom,lpg-chan-id = <3>;
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qcom,ramp-step-ms = <200>;
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qcom,ramp-low-index = <0>;
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qcom,ramp-high-index = <19>;
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qcom,ramp-pause-hi-count = <10>;
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qcom,ramp-pause-lo-count = <10>;
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qcom,ramp-pattern-repeat;
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};
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};
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...
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