| Marvell Discovery mv64[345]6x System Controller chips |
| =========================================================== |
| |
| The Marvell mv64[345]60 series of system controller chips contain |
| many of the peripherals needed to implement a complete computer |
| system. In this section, we define device tree nodes to describe |
| the system controller chip itself and each of the peripherals |
| which it contains. Compatible string values for each node are |
| prefixed with the string "marvell,", for Marvell Technology Group Ltd. |
| |
| 1) The /system-controller node |
| |
| This node is used to represent the system-controller and must be |
| present when the system uses a system controller chip. The top-level |
| system-controller node contains information that is global to all |
| devices within the system controller chip. The node name begins |
| with "system-controller" followed by the unit address, which is |
| the base address of the memory-mapped register set for the system |
| controller chip. |
| |
| Required properties: |
| |
| - ranges : Describes the translation of system controller addresses |
| for memory mapped registers. |
| - clock-frequency: Contains the main clock frequency for the system |
| controller chip. |
| - reg : This property defines the address and size of the |
| memory-mapped registers contained within the system controller |
| chip. The address specified in the "reg" property should match |
| the unit address of the system-controller node. |
| - #address-cells : Address representation for system controller |
| devices. This field represents the number of cells needed to |
| represent the address of the memory-mapped registers of devices |
| within the system controller chip. |
| - #size-cells : Size representation for the memory-mapped |
| registers within the system controller chip. |
| - #interrupt-cells : Defines the width of cells used to represent |
| interrupts. |
| |
| Optional properties: |
| |
| - model : The specific model of the system controller chip. Such |
| as, "mv64360", "mv64460", or "mv64560". |
| - compatible : A string identifying the compatibility identifiers |
| of the system controller chip. |
| |
| The system-controller node contains child nodes for each system |
| controller device that the platform uses. Nodes should not be created |
| for devices which exist on the system controller chip but are not used |
| |
| Example Marvell Discovery mv64360 system-controller node: |
| |
| system-controller@f1000000 { /* Marvell Discovery mv64360 */ |
| #address-cells = <1>; |
| #size-cells = <1>; |
| model = "mv64360"; /* Default */ |
| compatible = "marvell,mv64360"; |
| clock-frequency = <133333333>; |
| reg = <0xf1000000 0x10000>; |
| virtual-reg = <0xf1000000>; |
| ranges = <0x88000000 0x88000000 0x1000000 /* PCI 0 I/O Space */ |
| 0x80000000 0x80000000 0x8000000 /* PCI 0 MEM Space */ |
| 0xa0000000 0xa0000000 0x4000000 /* User FLASH */ |
| 0x00000000 0xf1000000 0x0010000 /* Bridge's regs */ |
| 0xf2000000 0xf2000000 0x0040000>;/* Integrated SRAM */ |
| |
| [ child node definitions... ] |
| } |
| |
| 2) Child nodes of /system-controller |
| |
| a) Marvell Discovery MDIO bus |
| |
| The MDIO is a bus to which the PHY devices are connected. For each |
| device that exists on this bus, a child node should be created. See |
| the definition of the PHY node below for an example of how to define |
| a PHY. |
| |
| Required properties: |
| - #address-cells : Should be <1> |
| - #size-cells : Should be <0> |
| - device_type : Should be "mdio" |
| - compatible : Should be "marvell,mv64360-mdio" |
| |
| Example: |
| |
| mdio { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| device_type = "mdio"; |
| compatible = "marvell,mv64360-mdio"; |
| |
| ethernet-phy@0 { |
| ...... |
| }; |
| }; |
| |
| |
| b) Marvell Discovery ethernet controller |
| |
| The Discover ethernet controller is described with two levels |
| of nodes. The first level describes an ethernet silicon block |
| and the second level describes up to 3 ethernet nodes within |
| that block. The reason for the multiple levels is that the |
| registers for the node are interleaved within a single set |
| of registers. The "ethernet-block" level describes the |
| shared register set, and the "ethernet" nodes describe ethernet |
| port-specific properties. |
| |
| Ethernet block node |
| |
| Required properties: |
| - #address-cells : <1> |
| - #size-cells : <0> |
| - compatible : "marvell,mv64360-eth-block" |
| - reg : Offset and length of the register set for this block |
| |
| Example Discovery Ethernet block node: |
| ethernet-block@2000 { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| compatible = "marvell,mv64360-eth-block"; |
| reg = <0x2000 0x2000>; |
| ethernet@0 { |
| ....... |
| }; |
| }; |
| |
| Ethernet port node |
| |
| Required properties: |
| - device_type : Should be "network". |
| - compatible : Should be "marvell,mv64360-eth". |
| - reg : Should be <0>, <1>, or <2>, according to which registers |
| within the silicon block the device uses. |
| - interrupts : <a> where a is the interrupt number for the port. |
| - interrupt-parent : the phandle for the interrupt controller |
| that services interrupts for this device. |
| - phy : the phandle for the PHY connected to this ethernet |
| controller. |
| - local-mac-address : 6 bytes, MAC address |
| |
| Example Discovery Ethernet port node: |
| ethernet@0 { |
| device_type = "network"; |
| compatible = "marvell,mv64360-eth"; |
| reg = <0>; |
| interrupts = <32>; |
| interrupt-parent = <&PIC>; |
| phy = <&PHY0>; |
| local-mac-address = [ 00 00 00 00 00 00 ]; |
| }; |
| |
| |
| |
| c) Marvell Discovery PHY nodes |
| |
| Required properties: |
| - device_type : Should be "ethernet-phy" |
| - interrupts : <a> where a is the interrupt number for this phy. |
| - interrupt-parent : the phandle for the interrupt controller that |
| services interrupts for this device. |
| - reg : The ID number for the phy, usually a small integer |
| |
| Example Discovery PHY node: |
| ethernet-phy@1 { |
| device_type = "ethernet-phy"; |
| compatible = "broadcom,bcm5421"; |
| interrupts = <76>; /* GPP 12 */ |
| interrupt-parent = <&PIC>; |
| reg = <1>; |
| }; |
| |
| |
| d) Marvell Discovery SDMA nodes |
| |
| Represent DMA hardware associated with the MPSC (multiprotocol |
| serial controllers). |
| |
| Required properties: |
| - compatible : "marvell,mv64360-sdma" |
| - reg : Offset and length of the register set for this device |
| - interrupts : <a> where a is the interrupt number for the DMA |
| device. |
| - interrupt-parent : the phandle for the interrupt controller |
| that services interrupts for this device. |
| |
| Example Discovery SDMA node: |
| sdma@4000 { |
| compatible = "marvell,mv64360-sdma"; |
| reg = <0x4000 0xc18>; |
| virtual-reg = <0xf1004000>; |
| interrupts = <36>; |
| interrupt-parent = <&PIC>; |
| }; |
| |
| |
| e) Marvell Discovery BRG nodes |
| |
| Represent baud rate generator hardware associated with the MPSC |
| (multiprotocol serial controllers). |
| |
| Required properties: |
| - compatible : "marvell,mv64360-brg" |
| - reg : Offset and length of the register set for this device |
| - clock-src : A value from 0 to 15 which selects the clock |
| source for the baud rate generator. This value corresponds |
| to the CLKS value in the BRGx configuration register. See |
| the mv64x60 User's Manual. |
| - clock-frequence : The frequency (in Hz) of the baud rate |
| generator's input clock. |
| - current-speed : The current speed setting (presumably by |
| firmware) of the baud rate generator. |
| |
| Example Discovery BRG node: |
| brg@b200 { |
| compatible = "marvell,mv64360-brg"; |
| reg = <0xb200 0x8>; |
| clock-src = <8>; |
| clock-frequency = <133333333>; |
| current-speed = <9600>; |
| }; |
| |
| |
| f) Marvell Discovery CUNIT nodes |
| |
| Represent the Serial Communications Unit device hardware. |
| |
| Required properties: |
| - reg : Offset and length of the register set for this device |
| |
| Example Discovery CUNIT node: |
| cunit@f200 { |
| reg = <0xf200 0x200>; |
| }; |
| |
| |
| g) Marvell Discovery MPSCROUTING nodes |
| |
| Represent the Discovery's MPSC routing hardware |
| |
| Required properties: |
| - reg : Offset and length of the register set for this device |
| |
| Example Discovery CUNIT node: |
| mpscrouting@b500 { |
| reg = <0xb400 0xc>; |
| }; |
| |
| |
| h) Marvell Discovery MPSCINTR nodes |
| |
| Represent the Discovery's MPSC DMA interrupt hardware registers |
| (SDMA cause and mask registers). |
| |
| Required properties: |
| - reg : Offset and length of the register set for this device |
| |
| Example Discovery MPSCINTR node: |
| mpsintr@b800 { |
| reg = <0xb800 0x100>; |
| }; |
| |
| |
| i) Marvell Discovery MPSC nodes |
| |
| Represent the Discovery's MPSC (Multiprotocol Serial Controller) |
| serial port. |
| |
| Required properties: |
| - device_type : "serial" |
| - compatible : "marvell,mv64360-mpsc" |
| - reg : Offset and length of the register set for this device |
| - sdma : the phandle for the SDMA node used by this port |
| - brg : the phandle for the BRG node used by this port |
| - cunit : the phandle for the CUNIT node used by this port |
| - mpscrouting : the phandle for the MPSCROUTING node used by this port |
| - mpscintr : the phandle for the MPSCINTR node used by this port |
| - cell-index : the hardware index of this cell in the MPSC core |
| - max_idle : value needed for MPSC CHR3 (Maximum Frame Length) |
| register |
| - interrupts : <a> where a is the interrupt number for the MPSC. |
| - interrupt-parent : the phandle for the interrupt controller |
| that services interrupts for this device. |
| |
| Example Discovery MPSCINTR node: |
| mpsc@8000 { |
| device_type = "serial"; |
| compatible = "marvell,mv64360-mpsc"; |
| reg = <0x8000 0x38>; |
| virtual-reg = <0xf1008000>; |
| sdma = <&SDMA0>; |
| brg = <&BRG0>; |
| cunit = <&CUNIT>; |
| mpscrouting = <&MPSCROUTING>; |
| mpscintr = <&MPSCINTR>; |
| cell-index = <0>; |
| max_idle = <40>; |
| interrupts = <40>; |
| interrupt-parent = <&PIC>; |
| }; |
| |
| |
| j) Marvell Discovery Watch Dog Timer nodes |
| |
| Represent the Discovery's watchdog timer hardware |
| |
| Required properties: |
| - compatible : "marvell,mv64360-wdt" |
| - reg : Offset and length of the register set for this device |
| |
| Example Discovery Watch Dog Timer node: |
| wdt@b410 { |
| compatible = "marvell,mv64360-wdt"; |
| reg = <0xb410 0x8>; |
| }; |
| |
| |
| k) Marvell Discovery I2C nodes |
| |
| Represent the Discovery's I2C hardware |
| |
| Required properties: |
| - device_type : "i2c" |
| - compatible : "marvell,mv64360-i2c" |
| - reg : Offset and length of the register set for this device |
| - interrupts : <a> where a is the interrupt number for the I2C. |
| - interrupt-parent : the phandle for the interrupt controller |
| that services interrupts for this device. |
| |
| Example Discovery I2C node: |
| compatible = "marvell,mv64360-i2c"; |
| reg = <0xc000 0x20>; |
| virtual-reg = <0xf100c000>; |
| interrupts = <37>; |
| interrupt-parent = <&PIC>; |
| }; |
| |
| |
| l) Marvell Discovery PIC (Programmable Interrupt Controller) nodes |
| |
| Represent the Discovery's PIC hardware |
| |
| Required properties: |
| - #interrupt-cells : <1> |
| - #address-cells : <0> |
| - compatible : "marvell,mv64360-pic" |
| - reg : Offset and length of the register set for this device |
| - interrupt-controller |
| |
| Example Discovery PIC node: |
| pic { |
| #interrupt-cells = <1>; |
| #address-cells = <0>; |
| compatible = "marvell,mv64360-pic"; |
| reg = <0x0 0x88>; |
| interrupt-controller; |
| }; |
| |
| |
| m) Marvell Discovery MPP (Multipurpose Pins) multiplexing nodes |
| |
| Represent the Discovery's MPP hardware |
| |
| Required properties: |
| - compatible : "marvell,mv64360-mpp" |
| - reg : Offset and length of the register set for this device |
| |
| Example Discovery MPP node: |
| mpp@f000 { |
| compatible = "marvell,mv64360-mpp"; |
| reg = <0xf000 0x10>; |
| }; |
| |
| |
| n) Marvell Discovery GPP (General Purpose Pins) nodes |
| |
| Represent the Discovery's GPP hardware |
| |
| Required properties: |
| - compatible : "marvell,mv64360-gpp" |
| - reg : Offset and length of the register set for this device |
| |
| Example Discovery GPP node: |
| gpp@f000 { |
| compatible = "marvell,mv64360-gpp"; |
| reg = <0xf100 0x20>; |
| }; |
| |
| |
| o) Marvell Discovery PCI host bridge node |
| |
| Represents the Discovery's PCI host bridge device. The properties |
| for this node conform to Rev 2.1 of the PCI Bus Binding to IEEE |
| 1275-1994. A typical value for the compatible property is |
| "marvell,mv64360-pci". |
| |
| Example Discovery PCI host bridge node |
| pci@80000000 { |
| #address-cells = <3>; |
| #size-cells = <2>; |
| #interrupt-cells = <1>; |
| device_type = "pci"; |
| compatible = "marvell,mv64360-pci"; |
| reg = <0xcf8 0x8>; |
| ranges = <0x01000000 0x0 0x0 |
| 0x88000000 0x0 0x01000000 |
| 0x02000000 0x0 0x80000000 |
| 0x80000000 0x0 0x08000000>; |
| bus-range = <0 255>; |
| clock-frequency = <66000000>; |
| interrupt-parent = <&PIC>; |
| interrupt-map-mask = <0xf800 0x0 0x0 0x7>; |
| interrupt-map = < |
| /* IDSEL 0x0a */ |
| 0x5000 0 0 1 &PIC 80 |
| 0x5000 0 0 2 &PIC 81 |
| 0x5000 0 0 3 &PIC 91 |
| 0x5000 0 0 4 &PIC 93 |
| |
| /* IDSEL 0x0b */ |
| 0x5800 0 0 1 &PIC 91 |
| 0x5800 0 0 2 &PIC 93 |
| 0x5800 0 0 3 &PIC 80 |
| 0x5800 0 0 4 &PIC 81 |
| |
| /* IDSEL 0x0c */ |
| 0x6000 0 0 1 &PIC 91 |
| 0x6000 0 0 2 &PIC 93 |
| 0x6000 0 0 3 &PIC 80 |
| 0x6000 0 0 4 &PIC 81 |
| |
| /* IDSEL 0x0d */ |
| 0x6800 0 0 1 &PIC 93 |
| 0x6800 0 0 2 &PIC 80 |
| 0x6800 0 0 3 &PIC 81 |
| 0x6800 0 0 4 &PIC 91 |
| >; |
| }; |
| |
| |
| p) Marvell Discovery CPU Error nodes |
| |
| Represent the Discovery's CPU error handler device. |
| |
| Required properties: |
| - compatible : "marvell,mv64360-cpu-error" |
| - reg : Offset and length of the register set for this device |
| - interrupts : the interrupt number for this device |
| - interrupt-parent : the phandle for the interrupt controller |
| that services interrupts for this device. |
| |
| Example Discovery CPU Error node: |
| cpu-error@0070 { |
| compatible = "marvell,mv64360-cpu-error"; |
| reg = <0x70 0x10 0x128 0x28>; |
| interrupts = <3>; |
| interrupt-parent = <&PIC>; |
| }; |
| |
| |
| q) Marvell Discovery SRAM Controller nodes |
| |
| Represent the Discovery's SRAM controller device. |
| |
| Required properties: |
| - compatible : "marvell,mv64360-sram-ctrl" |
| - reg : Offset and length of the register set for this device |
| - interrupts : the interrupt number for this device |
| - interrupt-parent : the phandle for the interrupt controller |
| that services interrupts for this device. |
| |
| Example Discovery SRAM Controller node: |
| sram-ctrl@0380 { |
| compatible = "marvell,mv64360-sram-ctrl"; |
| reg = <0x380 0x80>; |
| interrupts = <13>; |
| interrupt-parent = <&PIC>; |
| }; |
| |
| |
| r) Marvell Discovery PCI Error Handler nodes |
| |
| Represent the Discovery's PCI error handler device. |
| |
| Required properties: |
| - compatible : "marvell,mv64360-pci-error" |
| - reg : Offset and length of the register set for this device |
| - interrupts : the interrupt number for this device |
| - interrupt-parent : the phandle for the interrupt controller |
| that services interrupts for this device. |
| |
| Example Discovery PCI Error Handler node: |
| pci-error@1d40 { |
| compatible = "marvell,mv64360-pci-error"; |
| reg = <0x1d40 0x40 0xc28 0x4>; |
| interrupts = <12>; |
| interrupt-parent = <&PIC>; |
| }; |
| |
| |
| s) Marvell Discovery Memory Controller nodes |
| |
| Represent the Discovery's memory controller device. |
| |
| Required properties: |
| - compatible : "marvell,mv64360-mem-ctrl" |
| - reg : Offset and length of the register set for this device |
| - interrupts : the interrupt number for this device |
| - interrupt-parent : the phandle for the interrupt controller |
| that services interrupts for this device. |
| |
| Example Discovery Memory Controller node: |
| mem-ctrl@1400 { |
| compatible = "marvell,mv64360-mem-ctrl"; |
| reg = <0x1400 0x60>; |
| interrupts = <17>; |
| interrupt-parent = <&PIC>; |
| }; |
| |
| |
