Marvell Armada CP110 System Controller
======================================

The CP110 is one of the two core HW blocks of the Marvell Armada 7K/8K
SoCs. It contains system controllers, which provide several registers
giving access to numerous features: clocks, pin-muxing and many other
SoC configuration items. This DT binding allows to describe these
system controllers.

For the top level node:
 - compatible: must be: "syscon", "simple-mfd";
 - reg: register area of the CP110 system controller

SYSTEM CONTROLLER 0
===================

Clocks:
-------

The Device Tree node representing this System Controller 0 provides a
number of clocks:

 - a set of core clocks
 - a set of gatable clocks

Those clocks can be referenced by other Device Tree nodes using two
cells:
 - The first cell must be 0 or 1. 0 for the core clocks and 1 for the
   gatable clocks.
 - The second cell identifies the particular core clock or gatable
   clocks.

The following clocks are available:
 - Core clocks
   - 0 0	APLL
   - 0 1	PPv2 core
   - 0 2	EIP
   - 0 3	Core
   - 0 4	NAND core
   - 0 5	SDIO core
 - Gatable clocks
   - 1 0	Audio
   - 1 1	Comm Unit
   - 1 2	NAND
   - 1 3	PPv2
   - 1 4	SDIO
   - 1 5	MG Domain
   - 1 6	MG Core
   - 1 7	XOR1
   - 1 8	XOR0
   - 1 9	GOP DP
   - 1 11	PCIe x1 0
   - 1 12	PCIe x1 1
   - 1 13	PCIe x4
   - 1 14	PCIe / XOR
   - 1 15	SATA
   - 1 16	SATA USB
   - 1 17	Main
   - 1 18	SD/MMC/GOP
   - 1 21	Slow IO (SPI, NOR, BootROM, I2C, UART)
   - 1 22	USB3H0
   - 1 23	USB3H1
   - 1 24	USB3 Device
   - 1 25	EIP150
   - 1 26	EIP197

Required properties:

 - compatible: must be:
     "marvell,cp110-clock"
 - #clock-cells: must be set to 2

Pinctrl:
--------

For common binding part and usage, refer to the file
Documentation/devicetree/bindings/pinctrl/marvell,mvebu-pinctrl.txt.

Required properties:

- compatible: "marvell,armada-7k-pinctrl",
  "marvell,armada-8k-cpm-pinctrl" or "marvell,armada-8k-cps-pinctrl"
  depending on the specific variant of the SoC being used.

Available mpp pins/groups and functions:
Note: brackets (x) are not part of the mpp name for marvell,function and given
only for more detailed description in this document.

name	pins	functions
================================================================================
mpp0	0	gpio, dev(ale1), au(i2smclk), ge0(rxd3), tdm(pclk), ptp(pulse), mss_i2c(sda), uart0(rxd), sata0(present_act), ge(mdio)
mpp1	1	gpio, dev(ale0), au(i2sdo_spdifo), ge0(rxd2), tdm(drx), ptp(clk), mss_i2c(sck), uart0(txd), sata1(present_act), ge(mdc)
mpp2	2	gpio, dev(ad15), au(i2sextclk), ge0(rxd1), tdm(dtx), mss_uart(rxd), ptp(pclk_out), i2c1(sck), uart1(rxd), sata0(present_act), xg(mdc)
mpp3	3	gpio, dev(ad14), au(i2slrclk), ge0(rxd0), tdm(fsync), mss_uart(txd), pcie(rstoutn), i2c1(sda), uart1(txd), sata1(present_act), xg(mdio)
mpp4	4	gpio, dev(ad13), au(i2sbclk), ge0(rxctl), tdm(rstn), mss_uart(rxd), uart1(cts), pcie0(clkreq), uart3(rxd), ge(mdc)
mpp5	5	gpio, dev(ad12), au(i2sdi), ge0(rxclk), tdm(intn), mss_uart(txd), uart1(rts), pcie1(clkreq), uart3(txd), ge(mdio)
mpp6	6	gpio, dev(ad11), ge0(txd3), spi0(csn2), au(i2sextclk), sata1(present_act), pcie2(clkreq), uart0(rxd), ptp(pulse)
mpp7	7	gpio, dev(ad10), ge0(txd2), spi0(csn1), spi1(csn1), sata0(present_act), led(data), uart0(txd), ptp(clk)
mpp8	8	gpio, dev(ad9), ge0(txd1), spi0(csn0), spi1(csn0), uart0(cts), led(stb), uart2(rxd), ptp(pclk_out), synce1(clk)
mpp9	9	gpio, dev(ad8), ge0(txd0), spi0(mosi), spi1(mosi), pcie(rstoutn), synce2(clk)
mpp10	10	gpio, dev(readyn), ge0(txctl), spi0(miso), spi1(miso), uart0(cts), sata1(present_act)
mpp11	11	gpio, dev(wen1), ge0(txclkout), spi0(clk), spi1(clk), uart0(rts), led(clk), uart2(txd), sata0(present_act)
mpp12	12	gpio, dev(clk_out), nf(rbn1), spi1(csn1), ge0(rxclk)
mpp13	13	gpio, dev(burstn), nf(rbn0), spi1(miso), ge0(rxctl), mss_spi(miso)
mpp14	14	gpio, dev(bootcsn), dev(csn0), spi1(csn0), spi0(csn3), au(i2sextclk), spi0(miso), sata0(present_act), mss_spi(csn)
mpp15	15	gpio, dev(ad7), spi1(mosi), spi0(mosi), mss_spi(mosi), ptp(pulse_cp2cp)
mpp16	16	gpio, dev(ad6), spi1(clk), mss_spi(clk)
mpp17	17	gpio, dev(ad5), ge0(txd3)
mpp18	18	gpio, dev(ad4), ge0(txd2), ptp(clk_cp2cp)
mpp19	19	gpio, dev(ad3), ge0(txd1), wakeup(out_cp2cp)
mpp20	20	gpio, dev(ad2), ge0(txd0)
mpp21	21	gpio, dev(ad1), ge0(txctl), sei(in_cp2cp)
mpp22	22	gpio, dev(ad0), ge0(txclkout), wakeup(in_cp2cp)
mpp23	23	gpio, dev(a1), au(i2smclk), link(rd_in_cp2cp)
mpp24	24	gpio, dev(a0), au(i2slrclk)
mpp25	25	gpio, dev(oen), au(i2sdo_spdifo)
mpp26	26	gpio, dev(wen0), au(i2sbclk)
mpp27	27	gpio, dev(csn0), spi1(miso), mss_gpio4, ge0(rxd3), spi0(csn4), ge(mdio), sata0(present_act), uart0(rts), rei(in_cp2cp)
mpp28	28	gpio, dev(csn1), spi1(csn0), mss_gpio5, ge0(rxd2), spi0(csn5), pcie2(clkreq), ptp(pulse), ge(mdc), sata1(present_act), uart0(cts), led(data)
mpp29	29	gpio, dev(csn2), spi1(mosi), mss_gpio6, ge0(rxd1), spi0(csn6), pcie1(clkreq), ptp(clk), mss_i2c(sda), sata0(present_act), uart0(rxd), led(stb)
mpp30	30	gpio, dev(csn3), spi1(clk), mss_gpio7, ge0(rxd0), spi0(csn7), pcie0(clkreq), ptp(pclk_out), mss_i2c(sck), sata1(present_act), uart0(txd), led(clk)
mpp31	31	gpio, dev(a2), mss_gpio4, pcie(rstoutn), ge(mdc)
mpp32	32	gpio, mii(col), mii(txerr), mss_spi(miso), tdm(drx), au(i2sextclk), au(i2sdi), ge(mdio), sdio(v18_en), pcie1(clkreq), mss_gpio0
mpp33	33	gpio, mii(txclk), sdio(pwr10), mss_spi(csn), tdm(fsync), au(i2smclk), sdio(bus_pwr), xg(mdio), pcie2(clkreq), mss_gpio1
mpp34	34	gpio, mii(rxerr), sdio(pwr11), mss_spi(mosi), tdm(dtx), au(i2slrclk), sdio(wr_protect), ge(mdc), pcie0(clkreq), mss_gpio2
mpp35	35	gpio, sata1(present_act), i2c1(sda), mss_spi(clk), tdm(pclk), au(i2sdo_spdifo), sdio(card_detect), xg(mdio), ge(mdio), pcie(rstoutn), mss_gpio3
mpp36	36	gpio, synce2(clk), i2c1(sck), ptp(clk), synce1(clk), au(i2sbclk), sata0(present_act), xg(mdc), ge(mdc), pcie2(clkreq), mss_gpio5
mpp37	37	gpio, uart2(rxd), i2c0(sck), ptp(pclk_out), tdm(intn), mss_i2c(sck), sata1(present_act), ge(mdc), xg(mdc), pcie1(clkreq), mss_gpio6, link(rd_out_cp2cp)
mpp38	38	gpio, uart2(txd), i2c0(sda), ptp(pulse), tdm(rstn), mss_i2c(sda), sata0(present_act), ge(mdio), xg(mdio), au(i2sextclk), mss_gpio7, ptp(pulse_cp2cp)
mpp39	39	gpio, sdio(wr_protect), au(i2sbclk), ptp(clk), spi0(csn1), sata1(present_act), mss_gpio0
mpp40	40	gpio, sdio(pwr11), synce1(clk), mss_i2c(sda), au(i2sdo_spdifo), ptp(pclk_out), spi0(clk), uart1(txd), ge(mdio), sata0(present_act), mss_gpio1
mpp41	41	gpio, sdio(pwr10), sdio(bus_pwr), mss_i2c(sck), au(i2slrclk), ptp(pulse), spi0(mosi), uart1(rxd), ge(mdc), sata1(present_act), mss_gpio2, rei(out_cp2cp)
mpp42	42	gpio, sdio(v18_en), sdio(wr_protect), synce2(clk), au(i2smclk), mss_uart(txd), spi0(miso), uart1(cts), xg(mdc), sata0(present_act), mss_gpio4
mpp43	43	gpio, sdio(card_detect), synce1(clk), au(i2sextclk), mss_uart(rxd), spi0(csn0), uart1(rts), xg(mdio), sata1(present_act), mss_gpio5, wakeup(out_cp2cp)
mpp44	44	gpio, ge1(txd2), uart0(rts), ptp(clk_cp2cp)
mpp45	45	gpio, ge1(txd3), uart0(txd), pcie(rstoutn)
mpp46	46	gpio, ge1(txd1), uart1(rts)
mpp47	47	gpio, ge1(txd0), spi1(clk), uart1(txd), ge(mdc)
mpp48	48	gpio, ge1(txctl_txen), spi1(mosi), xg(mdc), wakeup(in_cp2cp)
mpp49	49	gpio, ge1(txclkout), mii(crs), spi1(miso), uart1(rxd), ge(mdio), pcie0(clkreq), sdio(v18_en), sei(out_cp2cp)
mpp50	50	gpio, ge1(rxclk), mss_i2c(sda), spi1(csn0), uart2(txd), uart0(rxd), xg(mdio), sdio(pwr11)
mpp51	51	gpio, ge1(rxd0), mss_i2c(sck), spi1(csn1), uart2(rxd), uart0(cts), sdio(pwr10)
mpp52	52	gpio, ge1(rxd1), synce1(clk), synce2(clk), spi1(csn2), uart1(cts), led(clk), pcie(rstoutn), pcie0(clkreq)
mpp53	53	gpio, ge1(rxd2), ptp(clk), spi1(csn3), uart1(rxd), led(stb), sdio(led)
mpp54	54	gpio, ge1(rxd3), synce2(clk), ptp(pclk_out), synce1(clk), led(data), sdio(hw_rst), sdio(wr_protect)
mpp55	55	gpio, ge1(rxctl_rxdv), ptp(pulse), sdio(led), sdio(card_detect)
mpp56	56	gpio, tdm(drx), au(i2sdo_spdifo), spi0(clk), uart1(rxd), sata1(present_act), sdio(clk)
mpp57	57	gpio, mss_i2c(sda), ptp(pclk_out), tdm(intn), au(i2sbclk), spi0(mosi), uart1(txd), sata0(present_act), sdio(cmd)
mpp58	58	gpio, mss_i2c(sck), ptp(clk), tdm(rstn), au(i2sdi), spi0(miso), uart1(cts), led(clk), sdio(d0)
mpp59	59	gpio, mss_gpio7, synce2(clk), tdm(fsync), au(i2slrclk), spi0(csn0), uart0(cts), led(stb), uart1(txd), sdio(d1)
mpp60	60	gpio, mss_gpio6, ptp(pulse), tdm(dtx), au(i2smclk), spi0(csn1), uart0(rts), led(data), uart1(rxd), sdio(d2)
mpp61	61	gpio, mss_gpio5, ptp(clk), tdm(pclk), au(i2sextclk), spi0(csn2), uart0(txd), uart2(txd), sata1(present_act), ge(mdio), sdio(d3)
mpp62	62	gpio, mss_gpio4, synce1(clk), ptp(pclk_out), sata1(present_act), spi0(csn3), uart0(rxd), uart2(rxd), sata0(present_act), ge(mdc)

GPIO:
-----

For common binding part and usage, refer to
Documentation/devicetree/bindings/gpio/gpio-mvebu.txt.

Required properties:

- compatible: "marvell,armada-8k-gpio"

- offset: offset address inside the syscon block

Example:

CP110_LABEL(syscon0): system-controller@440000 {
	compatible = "syscon", "simple-mfd";
	reg = <0x440000 0x1000>;

	CP110_LABEL(clk): clock {
		compatible = "marvell,cp110-clock";
		#clock-cells = <2>;
	};

	CP110_LABEL(pinctrl): pinctrl {
		compatible = "marvell,armada-8k-cpm-pinctrl";
	};

	CP110_LABEL(gpio1): gpio@100 {
		compatible = "marvell,armada-8k-gpio";
		offset = <0x100>;
		ngpios = <32>;
		gpio-controller;
		#gpio-cells = <2>;
		gpio-ranges = <&CP110_LABEL(pinctrl) 0 0 32>;
	};

};

SYSTEM CONTROLLER 1
===================

Thermal:
--------

The thermal IP can probe the temperature all around the processor. It
may feature several channels, each of them wired to one sensor.

It is possible to setup an overheat interrupt by giving at least one
critical point to any subnode of the thermal-zone node.

For common binding part and usage, refer to
Documentation/devicetree/bindings/thermal/thermal.txt

Required properties:
- compatible: must be one of:
  * marvell,armada-cp110-thermal
- reg: register range associated with the thermal functions.

Optional properties:
- interrupts-extended: overheat interrupt handle. Should point to
  a line of the ICU-SEI irqchip (116 is what is usually used by the
  firmware). The ICU-SEI will redirect towards interrupt line #37 of the
  AP SEI which is shared across all CPs.
  See interrupt-controller/interrupts.txt
- #thermal-sensor-cells: shall be <1> when thermal-zones subnodes refer
  to this IP and represents the channel ID. There is one sensor per
  channel. O refers to the thermal IP internal channel.

Example:
CP110_LABEL(syscon1): system-controller@6f8000 {
	compatible = "syscon", "simple-mfd";
	reg = <0x6f8000 0x1000>;

	CP110_LABEL(thermal): thermal-sensor@70 {
		compatible = "marvell,armada-cp110-thermal";
		reg = <0x70 0x10>;
		interrupts-extended = <&CP110_LABEL(icu_sei) 116 IRQ_TYPE_LEVEL_HIGH>;
		#thermal-sensor-cells = <1>;
	};
};
