216 lines
6.1 KiB
YAML
216 lines
6.1 KiB
YAML
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# 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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$id: http://devicetree.org/schemas/bus/ti-sysc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Texas Instruments interconnect target module
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maintainers:
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- Tony Lindgren <tony@atomide.com>
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description:
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Texas Instruments SoCs can have a generic interconnect target module
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for devices connected to various interconnects such as L3 interconnect
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using Arteris NoC, and L4 interconnect using Sonics s3220. This module
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is mostly used for interaction between module and Power, Reset and Clock
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Manager PRCM. It participates in the OCP Disconnect Protocol, but other
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than that it is mostly independent of the interconnect.
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Each interconnect target module can have one or more devices connected to
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it. There is a set of control registers for managing the interconnect target
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module clocks, idle modes and interconnect level resets.
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The interconnect target module control registers are sprinkled into the
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unused register address space of the first child device IP block managed by
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the interconnect target module. Typically the register names are REVISION,
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SYSCONFIG and SYSSTATUS.
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properties:
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$nodename:
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pattern: "^target-module(@[0-9a-f]+)?$"
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compatible:
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oneOf:
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- items:
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- enum:
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- ti,sysc-omap2
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- ti,sysc-omap4
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- ti,sysc-omap4-simple
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- ti,sysc-omap2-timer
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- ti,sysc-omap4-timer
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- ti,sysc-omap3430-sr
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- ti,sysc-omap3630-sr
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- ti,sysc-omap4-sr
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- ti,sysc-omap3-sham
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- ti,sysc-omap-aes
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- ti,sysc-mcasp
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- ti,sysc-dra7-mcasp
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- ti,sysc-usb-host-fs
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- ti,sysc-dra7-mcan
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- ti,sysc-pruss
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- const: ti,sysc
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- items:
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- const: ti,sysc
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reg:
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description:
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Interconnect target module control registers consisting of
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REVISION, SYSCONFIG and SYSSTATUS registers as defined in the
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Technical Reference Manual for the SoC.
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minItems: 1
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maxItems: 3
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reg-names:
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description:
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Interconnect target module control register names consisting
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of "rev", "sysc" and "syss".
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oneOf:
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- minItems: 1
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items:
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- const: rev
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- const: sysc
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- const: syss
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- items:
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- const: rev
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- const: syss
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- enum: [ sysc, syss ]
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power-domains:
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description: Target module power domain if available.
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maxItems: 1
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clocks:
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description:
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Target module clocks consisting of one functional clock, one
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interface clock, and up to 8 module specific optional clocks.
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Some modules may have only the functional clock, and some have
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no configurable clocks.
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minItems: 1
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maxItems: 4
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clock-names:
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description:
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Target module clock names like "fck", "ick", "optck1", "optck2"
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if the clocks are configurable.
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oneOf:
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- enum: [ ick, fck, sys_clk ]
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- items:
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- const: fck
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- enum: [ ick. dbclk, osc, sys_clk, dss_clk, ahclkx ]
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- items:
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- const: fck
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- const: phy-clk
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- const: phy-clk-div
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- items:
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- const: fck
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- const: hdmi_clk
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- const: sys_clk
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- const: tv_clk
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- items:
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- const: fck
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- const: ahclkx
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- const: ahclkr
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resets:
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description:
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Target module reset bit in the RSTCTRL register if wired for the module.
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Note that the other reset bits should be mapped for the child device
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driver to use.
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maxItems: 1
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reset-names:
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description:
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Target module reset names in the RSTCTRL register, typically named
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"rstctrl" if only one reset bit is wired for the module.
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items:
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- const: rstctrl
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'#address-cells':
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enum: [ 1, 2 ]
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'#size-cells':
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enum: [ 1, 2 ]
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ranges: true
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dma-ranges: true
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ti,sysc-mask:
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description: Mask of supported register bits for the SYSCONFIG register
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$ref: /schemas/types.yaml#/definitions/uint32
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ti,sysc-midle:
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description: List of hardware supported idle modes
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$ref: /schemas/types.yaml#/definitions/uint32-array
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ti,sysc-sidle:
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description: List of hardware supported idle modes
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$ref: /schemas/types.yaml#/definitions/uint32-array
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ti,syss-mask:
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description: Mask of supported register bits for the SYSSTATUS register
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$ref: /schemas/types.yaml#/definitions/uint32
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ti,sysc-delay-us:
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description: Delay needed after OCP softreset before accessing SYCONFIG
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default: 0
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minimum: 0
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maximum: 2
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ti,no-reset-on-init:
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description: Interconnect target module shall not be reset at init
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type: boolean
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ti,no-idle-on-init:
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description: Interconnect target module shall not be idled at init
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type: boolean
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ti,no-idle:
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description: Interconnect target module shall not be idled
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type: boolean
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ti,hwmods:
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description: Interconnect module name to use with legacy hwmod data
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$ref: /schemas/types.yaml#/definitions/string
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deprecated: true
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required:
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- compatible
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- '#address-cells'
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- '#size-cells'
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- ranges
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additionalProperties:
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type: object
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examples:
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- |
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#include <dt-bindings/bus/ti-sysc.h>
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#include <dt-bindings/clock/omap4.h>
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target-module@2b000 {
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compatible = "ti,sysc-omap2", "ti,sysc";
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ti,hwmods = "usb_otg_hs";
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reg = <0x2b400 0x4>,
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<0x2b404 0x4>,
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<0x2b408 0x4>;
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reg-names = "rev", "sysc", "syss";
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clocks = <&l3_init_clkctrl OMAP4_USB_OTG_HS_CLKCTRL 0>;
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clock-names = "fck";
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ti,sysc-mask = <(SYSC_OMAP2_ENAWAKEUP |
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SYSC_OMAP2_SOFTRESET |
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SYSC_OMAP2_AUTOIDLE)>;
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ti,sysc-midle = <SYSC_IDLE_FORCE>,
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<SYSC_IDLE_NO>,
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<SYSC_IDLE_SMART>;
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ti,sysc-sidle = <SYSC_IDLE_FORCE>,
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<SYSC_IDLE_NO>,
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<SYSC_IDLE_SMART>,
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<SYSC_IDLE_SMART_WKUP>;
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ti,syss-mask = <1>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0 0x2b000 0x1000>;
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};
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