xref: /freebsd/sys/contrib/device-tree/Bindings/clock/st,nomadik.txt (revision c66ec88fed842fbaad62c30d510644ceb7bd2d71)

ST Microelectronics Nomadik SRC System Reset and Control

This binding uses the common clock binding:
Documentation/devicetree/bindings/clock/clock-bindings.txt

The Nomadik SRC controller is responsible of controlling chrystals,
PLLs and clock gates.

Required properties for the SRC node:
- compatible: must be "stericsson,nomadik-src"
- reg: must contain the SRC register base and size

Optional properties for the SRC node:
- disable-sxtalo: if present this will disable the SXTALO
  i.e. the driver output for the slow 32kHz chrystal, if the
  board has its own circuitry for providing this oscillator
- disable-mxtal: if present this will disable the MXTALO,
  i.e. the driver output for the main (~19.2 MHz) chrystal,
  if the board has its own circuitry for providing this
  oscillator


PLL nodes: these nodes represent the two PLLs on the system,
which should both have the main chrystal, represented as a
fixed frequency clock, as parent.

Required properties for the two PLL nodes:
- compatible: must be "st,nomadik-pll-clock"
- clock-cells: must be 0
- clock-id: must be 1 or 2 for PLL1 and PLL2 respectively
- clocks: this clock will have main chrystal as parent


HCLK nodes: these represent the clock gates on individual
lines from the HCLK clock tree and the gate for individual
lines from the PCLK clock tree.

Requires properties for the HCLK nodes:
- compatible: must be "st,nomadik-hclk-clock"
- clock-cells: must be 0
- clock-id: must be the clock ID from 0 to 63 according to
  this table:

	0:  HCLKDMA0
	1:  HCLKSMC
	2:  HCLKSDRAM
	3:  HCLKDMA1
	4:  HCLKCLCD
	5:  PCLKIRDA
	6:  PCLKSSP
	7:  PCLKUART0
	8:  PCLKSDI
	9:  PCLKI2C0
	10: PCLKI2C1
	11: PCLKUART1
	12: PCLMSP0
	13: HCLKUSB
	14: HCLKDIF
	15: HCLKSAA
	16: HCLKSVA
	17: PCLKHSI
	18: PCLKXTI
	19: PCLKUART2
	20: PCLKMSP1
	21: PCLKMSP2
	22: PCLKOWM
	23: HCLKHPI
	24: PCLKSKE
	25: PCLKHSEM
	26: HCLK3D
	27: HCLKHASH
	28: HCLKCRYP
	29: PCLKMSHC
	30: HCLKUSBM
	31: HCLKRNG
	(32, 33, 34, 35 RESERVED)
	36: CLDCLK
	37: IRDACLK
	38: SSPICLK
	39: UART0CLK
	40: SDICLK
	41: I2C0CLK
	42: I2C1CLK
	43: UART1CLK
	44: MSPCLK0
	45: USBCLK
	46: DIFCLK
	47: IPI2CCLK
	48: IPBMCCLK
	49: HSICLKRX
	50: HSICLKTX
	51: UART2CLK
	52: MSPCLK1
	53: MSPCLK2
	54: OWMCLK
	(55 RESERVED)
	56: SKECLK
	(57 RESERVED)
	58: 3DCLK
	59: PCLKMSP3
	60: MSPCLK3
	61: MSHCCLK
	62: USBMCLK
	63: RNGCCLK