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Texas Instruments sysc interconnect target module wrapper binding | ||
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Texas Instruments SoCs can have a generic interconnect target module | ||
hardware for devices connected to various interconnects such as L3 | ||
interconnect (Arteris NoC) and L4 interconnect (Sonics s3220). The sysc | ||
is mostly used for interaction between module and PRCM. It participates | ||
in the OCP Disconnect Protocol but other than that is mostly independent | ||
of the interconnect. | ||
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Each interconnect target module can have one or more devices connected to | ||
it. There is a set of control registers for managing interconnect target | ||
module clocks, idle modes and interconnect level resets for the module. | ||
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These control registers are sprinkled into the unused register address | ||
space of the first child device IP block managed by the interconnect | ||
target module and typically are named REVISION, SYSCONFIG and SYSSTATUS. | ||
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Required standard properties: | ||
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- compatible shall be one of the following generic types: | ||
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"ti,sysc-omap2" | ||
"ti,sysc-omap4" | ||
"ti,sysc-omap4-simple" | ||
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or one of the following derivative types for hardware | ||
needing special workarounds: | ||
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"ti,sysc-omap3430-sr" | ||
"ti,sysc-omap3630-sr" | ||
"ti,sysc-omap4-sr" | ||
"ti,sysc-omap3-sham" | ||
"ti,sysc-omap-aes" | ||
"ti,sysc-mcasp" | ||
"ti,sysc-usb-host-fs" | ||
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- reg shall have register areas implemented for the interconnect | ||
target module in question such as revision, sysc and syss | ||
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- reg-names shall contain the register names implemented for the | ||
interconnect target module in question such as | ||
"rev, "sysc", and "syss" | ||
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- ranges shall contain the interconnect target module IO range | ||
available for one or more child device IP blocks managed | ||
by the interconnect target module, the ranges may include | ||
multiple ranges such as device L4 range for control and | ||
parent L3 range for DMA access | ||
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Optional properties: | ||
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- clocks clock specifier for each name in the clock-names as | ||
specified in the binding documentation for ti-clkctrl, | ||
typically available for all interconnect targets on TI SoCs | ||
based on omap4 except if it's read-only register in hwauto | ||
mode as for example omap4 L4_CFG_CLKCTRL | ||
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- clock-names should contain at least "fck", and optionally also "ick" | ||
depending on the SoC and the interconnect target module | ||
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- ti,hwmods optional TI interconnect module name to use legacy | ||
hwmod platform data | ||
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Example: Single instance of MUSB controller on omap4 using interconnect ranges | ||
using offsets from l4_cfg second segment (0x4a000000 + 0x80000 = 0x4a0ab000): | ||
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target-module@2b000 { /* 0x4a0ab000, ap 84 12.0 */ | ||
compatible = "ti,sysc-omap2"; | ||
ti,hwmods = "usb_otg_hs"; | ||
reg = <0x2b400 0x4>, | ||
<0x2b404 0x4>, | ||
<0x2b408 0x4>; | ||
reg-names = "rev", "sysc", "syss"; | ||
clocks = <&l3_init_clkctrl OMAP4_USB_OTG_HS_CLKCTRL 0>; | ||
clock-names = "fck"; | ||
#address-cells = <1>; | ||
#size-cells = <1>; | ||
ranges = <0 0x2b000 0x1000>; | ||
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usb_otg_hs: otg@0 { | ||
compatible = "ti,omap4-musb"; | ||
reg = <0x0 0x7ff>; | ||
interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>, | ||
<GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>; | ||
usb-phy = <&usb2_phy>; | ||
... | ||
}; | ||
}; | ||
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Note that other SoCs, such as am335x can have multipe child devices. On am335x | ||
there are two MUSB instances, two USB PHY instances, and a single CPPI41 DMA | ||
instance as children of a single interconnet target module. |
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47 changes: 47 additions & 0 deletions
47
Documentation/devicetree/bindings/power/ti-smartreflex.txt
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Texas Instruments SmartReflex binding | ||
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SmartReflex is used to set and adjust the SoC operating points. | ||
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Required properties: | ||
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compatible: Shall be one of the following: | ||
"ti,omap3-smartreflex-core" | ||
"ti,omap3-smartreflex-iva" | ||
"ti,omap4-smartreflex-core" | ||
"ti,omap4-smartreflex-mpu" | ||
"ti,omap4-smartreflex-iva" | ||
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reg: Shall contain the device instance IO range | ||
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interrupts: Shall contain the device instance interrupt | ||
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Optional properties: | ||
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ti,hwmods: Shall contain the TI interconnect module name if needed | ||
by the SoC | ||
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Example: | ||
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smartreflex_iva: smartreflex@4a0db000 { | ||
compatible = "ti,omap4-smartreflex-iva"; | ||
reg = <0x4a0db000 0x80>; | ||
interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>; | ||
ti,hwmods = "smartreflex_iva"; | ||
}; | ||
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smartreflex_core: smartreflex@4a0dd000 { | ||
compatible = "ti,omap4-smartreflex-core"; | ||
reg = <0x4a0dd000 0x80>; | ||
interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>; | ||
ti,hwmods = "smartreflex_core"; | ||
}; | ||
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smartreflex_mpu: smartreflex@4a0d9000 { | ||
compatible = "ti,omap4-smartreflex-mpu"; | ||
reg = <0x4a0d9000 0x80>; | ||
interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>; | ||
ti,hwmods = "smartreflex_mpu"; | ||
}; |
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