# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/stericsson,db8500-prcmu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ST-Ericsson DB8500 PRCMU - Power Reset and Control Management Unit
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
description:
The DB8500 Power Reset and Control Management Unit is an XP70 8-bit
microprocessor that is embedded in the always-on power domain of the
DB8500 SoCs to manage the low power states, powering up and down parts
of the silicon, and controlling reset of different IP blocks.
properties:
$nodename:
pattern: '^prcmu@[0-9a-f]+$'
compatible:
description: The device is compatible both to the device-specific
compatible "stericsson,db8500-prcmu" and "syscon". The latter
compatible is needed for the device to be exposed as a system
controller so that arbitrary registers can be access by
different operating system components.
items:
- const: stericsson,db8500-prcmu
- const: syscon
reg:
items:
- description: Main PRCMU register area
- description: PRCMU TCPM register area
- description: PRCMU TCDM register area
reg-names:
items:
- const: prcmu
- const: prcmu-tcpm
- const: prcmu-tcdm
interrupts:
maxItems: 1
'#address-cells':
const: 1
'#size-cells':
const: 1
ranges: true
interrupt-controller: true
'#interrupt-cells':
const: 2
db8500-prcmu-regulators:
description: Node describing the DB8500 regulators. These are mainly
power rails inside the silicon but some of those are also routed
out to external pins.
type: object
properties:
compatible:
const: stericsson,db8500-prcmu-regulator
db8500_vape:
description: The voltage for the application processor, the
main voltage domain for the chip.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_varm:
description: The voltage for the ARM Cortex A-9 CPU.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_vmodem:
description: The voltage for the modem subsystem.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_vpll:
description: The voltage for the phase locked loop clocks.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_vsmps1:
description: Also known as VIO12, is a step-down voltage regulator
for 1.2V I/O. SMPS means System Management Power Source.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_vsmps2:
description: Also known as VIO18, is a step-down voltage regulator
for 1.8V I/O. SMPS means System Management Power Source.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_vsmps3:
description: This is a step-down voltage regulator
for 0.87 thru 1.875V I/O. SMPS means System Management Power Source.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_vrf1:
description: RF transceiver voltage regulator.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_sva_mmdsp:
description: Smart Video Accelerator (SVA) multimedia DSP (MMDSP)
voltage regulator. This is the voltage for the accelerator DSP
for video encoding and decoding.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_sva_mmdsp_ret:
description: Smart Video Accelerator (SVA) multimedia DSP (MMDSP)
voltage regulator for retention mode.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_sva_pipe:
description: Smart Video Accelerator (SVA) multimedia DSP (MMDSP)
voltage regulator for the data pipe.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_sia_mmdsp:
description: Smart Image Accelerator (SIA) multimedia DSP (MMDSP)
voltage regulator. This is the voltage for the accelerator DSP
for image encoding and decoding.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_sia_mmdsp_ret:
description: Smart Image Accelerator (SIA) multimedia DSP (MMDSP)
voltage regulator for retention mode.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_sia_pipe:
description: Smart Image Accelerator (SIA) multimedia DSP (MMDSP)
voltage regulator for the data pipe.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_sga:
description: Smart Graphics Accelerator (SGA) voltage regulator.
This is in effect controlling the power to the MALI400 3D
accelerator block.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_b2r2_mcde:
description: Blit Blend Rotate and Rescale (B2R2), and Multi-Channel
Display Engine (MCDE) voltage regulator. These are two graphics
blocks.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_esram12:
description: Embedded Static RAM (ESRAM) 1 and 2 voltage regulator.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_esram12_ret:
description: Embedded Static RAM (ESRAM) 1 and 2 voltage regulator for
retention mode.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_esram34:
description: Embedded Static RAM (ESRAM) 3 and 4 voltage regulator.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
db8500_esram34_ret:
description: Embedded Static RAM (ESRAM) 3 and 4 voltage regulator for
retention mode.
type: object
$ref: ../regulator/regulator.yaml#
unevaluatedProperties: false
required:
- compatible
- db8500_vape
- db8500_varm
- db8500_vmodem
- db8500_vpll
- db8500_vsmps1
- db8500_vsmps2
- db8500_vsmps3
- db8500_vrf1
- db8500_sva_mmdsp
- db8500_sva_mmdsp_ret
- db8500_sva_pipe
- db8500_sia_mmdsp
- db8500_sia_mmdsp_ret
- db8500_sia_pipe
- db8500_sga
- db8500_b2r2_mcde
- db8500_esram12
- db8500_esram12_ret
- db8500_esram34
- db8500_esram34_ret
additionalProperties: false
patternProperties:
"^thermal@[0-9a-f]+$":
description: Node describing the DB8500 thermal control functions.
This binds to an operating system driver that monitors the
temperature of the SoC.
type: object
properties:
compatible:
const: stericsson,db8500-thermal
reg:
maxItems: 1
interrupts:
items:
- description: Hotmon low interrupt (falling temperature)
- description: Hotmon high interrupt (rising temperature)
interrupt-names:
items:
- const: IRQ_HOTMON_LOW
- const: IRQ_HOTMON_HIGH
'#thermal-sensor-cells':
const: 0
additionalProperties: false
"^prcmu-timer-4@[0-9a-f]+$":
description: Node describing the externally visible timer 4 in the
PRCMU block. This timer is interesting to the operating system
since even thought it has a very low resolution (32768 Hz) it is
always on, and thus provides a consistent monotonic timeline for
the system.
type: object
properties:
compatible:
const: stericsson,db8500-prcmu-timer-4
reg:
maxItems: 1
additionalProperties: false
"^ab850[05]$":
description: Node describing the Analog Baseband 8500 mixed-signals
ASIC AB8500 and subcomponents. The AB8500 is accessed through the
PRCMU and hence it appears here. This component has a separate
set of devicetree bindings. The AB8505 is a newer version of the
same ASIC.
type: object
$ref: stericsson,ab8500.yaml#
required:
- compatible
- reg
- '#address-cells'
- '#size-cells'
- ranges
- interrupts
- interrupt-controller
- '#interrupt-cells'
- db8500-prcmu-regulators
additionalProperties: false