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@ -0,0 +1,148 @@
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||||||
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4xx/Axon EMAC ethernet nodes
|
||||||
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|
||||||
|
The EMAC ethernet controller in IBM and AMCC 4xx chips, and also
|
||||||
|
the Axon bridge. To operate this needs to interact with a ths
|
||||||
|
special McMAL DMA controller, and sometimes an RGMII or ZMII
|
||||||
|
interface. In addition to the nodes and properties described
|
||||||
|
below, the node for the OPB bus on which the EMAC sits must have a
|
||||||
|
correct clock-frequency property.
|
||||||
|
|
||||||
|
i) The EMAC node itself
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
- device_type : "network"
|
||||||
|
|
||||||
|
- compatible : compatible list, contains 2 entries, first is
|
||||||
|
"ibm,emac-CHIP" where CHIP is the host ASIC (440gx,
|
||||||
|
405gp, Axon) and second is either "ibm,emac" or
|
||||||
|
"ibm,emac4". For Axon, thus, we have: "ibm,emac-axon",
|
||||||
|
"ibm,emac4"
|
||||||
|
- interrupts : <interrupt mapping for EMAC IRQ and WOL IRQ>
|
||||||
|
- interrupt-parent : optional, if needed for interrupt mapping
|
||||||
|
- reg : <registers mapping>
|
||||||
|
- local-mac-address : 6 bytes, MAC address
|
||||||
|
- mal-device : phandle of the associated McMAL node
|
||||||
|
- mal-tx-channel : 1 cell, index of the tx channel on McMAL associated
|
||||||
|
with this EMAC
|
||||||
|
- mal-rx-channel : 1 cell, index of the rx channel on McMAL associated
|
||||||
|
with this EMAC
|
||||||
|
- cell-index : 1 cell, hardware index of the EMAC cell on a given
|
||||||
|
ASIC (typically 0x0 and 0x1 for EMAC0 and EMAC1 on
|
||||||
|
each Axon chip)
|
||||||
|
- max-frame-size : 1 cell, maximum frame size supported in bytes
|
||||||
|
- rx-fifo-size : 1 cell, Rx fifo size in bytes for 10 and 100 Mb/sec
|
||||||
|
operations.
|
||||||
|
For Axon, 2048
|
||||||
|
- tx-fifo-size : 1 cell, Tx fifo size in bytes for 10 and 100 Mb/sec
|
||||||
|
operations.
|
||||||
|
For Axon, 2048.
|
||||||
|
- fifo-entry-size : 1 cell, size of a fifo entry (used to calculate
|
||||||
|
thresholds).
|
||||||
|
For Axon, 0x00000010
|
||||||
|
- mal-burst-size : 1 cell, MAL burst size (used to calculate thresholds)
|
||||||
|
in bytes.
|
||||||
|
For Axon, 0x00000100 (I think ...)
|
||||||
|
- phy-mode : string, mode of operations of the PHY interface.
|
||||||
|
Supported values are: "mii", "rmii", "smii", "rgmii",
|
||||||
|
"tbi", "gmii", rtbi", "sgmii".
|
||||||
|
For Axon on CAB, it is "rgmii"
|
||||||
|
- mdio-device : 1 cell, required iff using shared MDIO registers
|
||||||
|
(440EP). phandle of the EMAC to use to drive the
|
||||||
|
MDIO lines for the PHY used by this EMAC.
|
||||||
|
- zmii-device : 1 cell, required iff connected to a ZMII. phandle of
|
||||||
|
the ZMII device node
|
||||||
|
- zmii-channel : 1 cell, required iff connected to a ZMII. Which ZMII
|
||||||
|
channel or 0xffffffff if ZMII is only used for MDIO.
|
||||||
|
- rgmii-device : 1 cell, required iff connected to an RGMII. phandle
|
||||||
|
of the RGMII device node.
|
||||||
|
For Axon: phandle of plb5/plb4/opb/rgmii
|
||||||
|
- rgmii-channel : 1 cell, required iff connected to an RGMII. Which
|
||||||
|
RGMII channel is used by this EMAC.
|
||||||
|
Fox Axon: present, whatever value is appropriate for each
|
||||||
|
EMAC, that is the content of the current (bogus) "phy-port"
|
||||||
|
property.
|
||||||
|
|
||||||
|
Optional properties:
|
||||||
|
- phy-address : 1 cell, optional, MDIO address of the PHY. If absent,
|
||||||
|
a search is performed.
|
||||||
|
- phy-map : 1 cell, optional, bitmap of addresses to probe the PHY
|
||||||
|
for, used if phy-address is absent. bit 0x00000001 is
|
||||||
|
MDIO address 0.
|
||||||
|
For Axon it can be absent, though my current driver
|
||||||
|
doesn't handle phy-address yet so for now, keep
|
||||||
|
0x00ffffff in it.
|
||||||
|
- rx-fifo-size-gige : 1 cell, Rx fifo size in bytes for 1000 Mb/sec
|
||||||
|
operations (if absent the value is the same as
|
||||||
|
rx-fifo-size). For Axon, either absent or 2048.
|
||||||
|
- tx-fifo-size-gige : 1 cell, Tx fifo size in bytes for 1000 Mb/sec
|
||||||
|
operations (if absent the value is the same as
|
||||||
|
tx-fifo-size). For Axon, either absent or 2048.
|
||||||
|
- tah-device : 1 cell, optional. If connected to a TAH engine for
|
||||||
|
offload, phandle of the TAH device node.
|
||||||
|
- tah-channel : 1 cell, optional. If appropriate, channel used on the
|
||||||
|
TAH engine.
|
||||||
|
|
||||||
|
Example:
|
||||||
|
|
||||||
|
EMAC0: ethernet@40000800 {
|
||||||
|
device_type = "network";
|
||||||
|
compatible = "ibm,emac-440gp", "ibm,emac";
|
||||||
|
interrupt-parent = <&UIC1>;
|
||||||
|
interrupts = <1c 4 1d 4>;
|
||||||
|
reg = <40000800 70>;
|
||||||
|
local-mac-address = [00 04 AC E3 1B 1E];
|
||||||
|
mal-device = <&MAL0>;
|
||||||
|
mal-tx-channel = <0 1>;
|
||||||
|
mal-rx-channel = <0>;
|
||||||
|
cell-index = <0>;
|
||||||
|
max-frame-size = <5dc>;
|
||||||
|
rx-fifo-size = <1000>;
|
||||||
|
tx-fifo-size = <800>;
|
||||||
|
phy-mode = "rmii";
|
||||||
|
phy-map = <00000001>;
|
||||||
|
zmii-device = <&ZMII0>;
|
||||||
|
zmii-channel = <0>;
|
||||||
|
};
|
||||||
|
|
||||||
|
ii) McMAL node
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
- device_type : "dma-controller"
|
||||||
|
- compatible : compatible list, containing 2 entries, first is
|
||||||
|
"ibm,mcmal-CHIP" where CHIP is the host ASIC (like
|
||||||
|
emac) and the second is either "ibm,mcmal" or
|
||||||
|
"ibm,mcmal2".
|
||||||
|
For Axon, "ibm,mcmal-axon","ibm,mcmal2"
|
||||||
|
- interrupts : <interrupt mapping for the MAL interrupts sources:
|
||||||
|
5 sources: tx_eob, rx_eob, serr, txde, rxde>.
|
||||||
|
For Axon: This is _different_ from the current
|
||||||
|
firmware. We use the "delayed" interrupts for txeob
|
||||||
|
and rxeob. Thus we end up with mapping those 5 MPIC
|
||||||
|
interrupts, all level positive sensitive: 10, 11, 32,
|
||||||
|
33, 34 (in decimal)
|
||||||
|
- dcr-reg : < DCR registers range >
|
||||||
|
- dcr-parent : if needed for dcr-reg
|
||||||
|
- num-tx-chans : 1 cell, number of Tx channels
|
||||||
|
- num-rx-chans : 1 cell, number of Rx channels
|
||||||
|
|
||||||
|
iii) ZMII node
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
- compatible : compatible list, containing 2 entries, first is
|
||||||
|
"ibm,zmii-CHIP" where CHIP is the host ASIC (like
|
||||||
|
EMAC) and the second is "ibm,zmii".
|
||||||
|
For Axon, there is no ZMII node.
|
||||||
|
- reg : <registers mapping>
|
||||||
|
|
||||||
|
iv) RGMII node
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
- compatible : compatible list, containing 2 entries, first is
|
||||||
|
"ibm,rgmii-CHIP" where CHIP is the host ASIC (like
|
||||||
|
EMAC) and the second is "ibm,rgmii".
|
||||||
|
For Axon, "ibm,rgmii-axon","ibm,rgmii"
|
||||||
|
- reg : <registers mapping>
|
||||||
|
- revision : as provided by the RGMII new version register if
|
||||||
|
available.
|
||||||
|
For Axon: 0x0000012a
|
||||||
|
|
||||||
|
|
@ -0,0 +1,50 @@
|
||||||
|
Specifying GPIO information for devices
|
||||||
|
============================================
|
||||||
|
|
||||||
|
1) gpios property
|
||||||
|
-----------------
|
||||||
|
|
||||||
|
Nodes that makes use of GPIOs should define them using `gpios' property,
|
||||||
|
format of which is: <&gpio-controller1-phandle gpio1-specifier
|
||||||
|
&gpio-controller2-phandle gpio2-specifier
|
||||||
|
0 /* holes are permitted, means no GPIO 3 */
|
||||||
|
&gpio-controller4-phandle gpio4-specifier
|
||||||
|
...>;
|
||||||
|
|
||||||
|
Note that gpio-specifier length is controller dependent.
|
||||||
|
|
||||||
|
gpio-specifier may encode: bank, pin position inside the bank,
|
||||||
|
whether pin is open-drain and whether pin is logically inverted.
|
||||||
|
|
||||||
|
Example of the node using GPIOs:
|
||||||
|
|
||||||
|
node {
|
||||||
|
gpios = <&qe_pio_e 18 0>;
|
||||||
|
};
|
||||||
|
|
||||||
|
In this example gpio-specifier is "18 0" and encodes GPIO pin number,
|
||||||
|
and empty GPIO flags as accepted by the "qe_pio_e" gpio-controller.
|
||||||
|
|
||||||
|
2) gpio-controller nodes
|
||||||
|
------------------------
|
||||||
|
|
||||||
|
Every GPIO controller node must have #gpio-cells property defined,
|
||||||
|
this information will be used to translate gpio-specifiers.
|
||||||
|
|
||||||
|
Example of two SOC GPIO banks defined as gpio-controller nodes:
|
||||||
|
|
||||||
|
qe_pio_a: gpio-controller@1400 {
|
||||||
|
#gpio-cells = <2>;
|
||||||
|
compatible = "fsl,qe-pario-bank-a", "fsl,qe-pario-bank";
|
||||||
|
reg = <0x1400 0x18>;
|
||||||
|
gpio-controller;
|
||||||
|
};
|
||||||
|
|
||||||
|
qe_pio_e: gpio-controller@1460 {
|
||||||
|
#gpio-cells = <2>;
|
||||||
|
compatible = "fsl,qe-pario-bank-e", "fsl,qe-pario-bank";
|
||||||
|
reg = <0x1460 0x18>;
|
||||||
|
gpio-controller;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -0,0 +1,19 @@
|
||||||
|
MDIO on GPIOs
|
||||||
|
|
||||||
|
Currently defined compatibles:
|
||||||
|
- virtual,gpio-mdio
|
||||||
|
|
||||||
|
MDC and MDIO lines connected to GPIO controllers are listed in the
|
||||||
|
gpios property as described in section VIII.1 in the following order:
|
||||||
|
|
||||||
|
MDC, MDIO.
|
||||||
|
|
||||||
|
Example:
|
||||||
|
|
||||||
|
mdio {
|
||||||
|
compatible = "virtual,mdio-gpio";
|
||||||
|
#address-cells = <1>;
|
||||||
|
#size-cells = <0>;
|
||||||
|
gpios = <&qe_pio_a 11
|
||||||
|
&qe_pio_c 6>;
|
||||||
|
};
|
||||||
|
|
@ -0,0 +1,521 @@
|
||||||
|
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 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>;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -0,0 +1,25 @@
|
||||||
|
PHY nodes
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
|
||||||
|
- device_type : Should be "ethernet-phy"
|
||||||
|
- interrupts : <a b> where a is the interrupt number and b is a
|
||||||
|
field that represents an encoding of the sense and level
|
||||||
|
information for the interrupt. This should be encoded based on
|
||||||
|
the information in section 2) depending on the type of interrupt
|
||||||
|
controller you have.
|
||||||
|
- 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
|
||||||
|
- linux,phandle : phandle for this node; likely referenced by an
|
||||||
|
ethernet controller node.
|
||||||
|
|
||||||
|
Example:
|
||||||
|
|
||||||
|
ethernet-phy@0 {
|
||||||
|
linux,phandle = <2452000>
|
||||||
|
interrupt-parent = <40000>;
|
||||||
|
interrupts = <35 1>;
|
||||||
|
reg = <0>;
|
||||||
|
device_type = "ethernet-phy";
|
||||||
|
};
|
||||||
|
|
@ -0,0 +1,57 @@
|
||||||
|
SPI (Serial Peripheral Interface) busses
|
||||||
|
|
||||||
|
SPI busses can be described with a node for the SPI master device
|
||||||
|
and a set of child nodes for each SPI slave on the bus. For this
|
||||||
|
discussion, it is assumed that the system's SPI controller is in
|
||||||
|
SPI master mode. This binding does not describe SPI controllers
|
||||||
|
in slave mode.
|
||||||
|
|
||||||
|
The SPI master node requires the following properties:
|
||||||
|
- #address-cells - number of cells required to define a chip select
|
||||||
|
address on the SPI bus.
|
||||||
|
- #size-cells - should be zero.
|
||||||
|
- compatible - name of SPI bus controller following generic names
|
||||||
|
recommended practice.
|
||||||
|
No other properties are required in the SPI bus node. It is assumed
|
||||||
|
that a driver for an SPI bus device will understand that it is an SPI bus.
|
||||||
|
However, the binding does not attempt to define the specific method for
|
||||||
|
assigning chip select numbers. Since SPI chip select configuration is
|
||||||
|
flexible and non-standardized, it is left out of this binding with the
|
||||||
|
assumption that board specific platform code will be used to manage
|
||||||
|
chip selects. Individual drivers can define additional properties to
|
||||||
|
support describing the chip select layout.
|
||||||
|
|
||||||
|
SPI slave nodes must be children of the SPI master node and can
|
||||||
|
contain the following properties.
|
||||||
|
- reg - (required) chip select address of device.
|
||||||
|
- compatible - (required) name of SPI device following generic names
|
||||||
|
recommended practice
|
||||||
|
- spi-max-frequency - (required) Maximum SPI clocking speed of device in Hz
|
||||||
|
- spi-cpol - (optional) Empty property indicating device requires
|
||||||
|
inverse clock polarity (CPOL) mode
|
||||||
|
- spi-cpha - (optional) Empty property indicating device requires
|
||||||
|
shifted clock phase (CPHA) mode
|
||||||
|
- spi-cs-high - (optional) Empty property indicating device requires
|
||||||
|
chip select active high
|
||||||
|
|
||||||
|
SPI example for an MPC5200 SPI bus:
|
||||||
|
spi@f00 {
|
||||||
|
#address-cells = <1>;
|
||||||
|
#size-cells = <0>;
|
||||||
|
compatible = "fsl,mpc5200b-spi","fsl,mpc5200-spi";
|
||||||
|
reg = <0xf00 0x20>;
|
||||||
|
interrupts = <2 13 0 2 14 0>;
|
||||||
|
interrupt-parent = <&mpc5200_pic>;
|
||||||
|
|
||||||
|
ethernet-switch@0 {
|
||||||
|
compatible = "micrel,ks8995m";
|
||||||
|
spi-max-frequency = <1000000>;
|
||||||
|
reg = <0>;
|
||||||
|
};
|
||||||
|
|
||||||
|
codec@1 {
|
||||||
|
compatible = "ti,tlv320aic26";
|
||||||
|
spi-max-frequency = <100000>;
|
||||||
|
reg = <1>;
|
||||||
|
};
|
||||||
|
};
|
||||||
|
|
@ -0,0 +1,25 @@
|
||||||
|
USB EHCI controllers
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
- compatible : should be "usb-ehci".
|
||||||
|
- reg : should contain at least address and length of the standard EHCI
|
||||||
|
register set for the device. Optional platform-dependent registers
|
||||||
|
(debug-port or other) can be also specified here, but only after
|
||||||
|
definition of standard EHCI registers.
|
||||||
|
- interrupts : one EHCI interrupt should be described here.
|
||||||
|
If device registers are implemented in big endian mode, the device
|
||||||
|
node should have "big-endian-regs" property.
|
||||||
|
If controller implementation operates with big endian descriptors,
|
||||||
|
"big-endian-desc" property should be specified.
|
||||||
|
If both big endian registers and descriptors are used by the controller
|
||||||
|
implementation, "big-endian" property can be specified instead of having
|
||||||
|
both "big-endian-regs" and "big-endian-desc".
|
||||||
|
|
||||||
|
Example (Sequoia 440EPx):
|
||||||
|
ehci@e0000300 {
|
||||||
|
compatible = "ibm,usb-ehci-440epx", "usb-ehci";
|
||||||
|
interrupt-parent = <&UIC0>;
|
||||||
|
interrupts = <1a 4>;
|
||||||
|
reg = <0 e0000300 90 0 e0000390 70>;
|
||||||
|
big-endian;
|
||||||
|
};
|
||||||
|
|
@ -0,0 +1,295 @@
|
||||||
|
d) Xilinx IP cores
|
||||||
|
|
||||||
|
The Xilinx EDK toolchain ships with a set of IP cores (devices) for use
|
||||||
|
in Xilinx Spartan and Virtex FPGAs. The devices cover the whole range
|
||||||
|
of standard device types (network, serial, etc.) and miscellaneous
|
||||||
|
devices (gpio, LCD, spi, etc). Also, since these devices are
|
||||||
|
implemented within the fpga fabric every instance of the device can be
|
||||||
|
synthesised with different options that change the behaviour.
|
||||||
|
|
||||||
|
Each IP-core has a set of parameters which the FPGA designer can use to
|
||||||
|
control how the core is synthesized. Historically, the EDK tool would
|
||||||
|
extract the device parameters relevant to device drivers and copy them
|
||||||
|
into an 'xparameters.h' in the form of #define symbols. This tells the
|
||||||
|
device drivers how the IP cores are configured, but it requres the kernel
|
||||||
|
to be recompiled every time the FPGA bitstream is resynthesized.
|
||||||
|
|
||||||
|
The new approach is to export the parameters into the device tree and
|
||||||
|
generate a new device tree each time the FPGA bitstream changes. The
|
||||||
|
parameters which used to be exported as #defines will now become
|
||||||
|
properties of the device node. In general, device nodes for IP-cores
|
||||||
|
will take the following form:
|
||||||
|
|
||||||
|
(name): (generic-name)@(base-address) {
|
||||||
|
compatible = "xlnx,(ip-core-name)-(HW_VER)"
|
||||||
|
[, (list of compatible devices), ...];
|
||||||
|
reg = <(baseaddr) (size)>;
|
||||||
|
interrupt-parent = <&interrupt-controller-phandle>;
|
||||||
|
interrupts = < ... >;
|
||||||
|
xlnx,(parameter1) = "(string-value)";
|
||||||
|
xlnx,(parameter2) = <(int-value)>;
|
||||||
|
};
|
||||||
|
|
||||||
|
(generic-name): an open firmware-style name that describes the
|
||||||
|
generic class of device. Preferably, this is one word, such
|
||||||
|
as 'serial' or 'ethernet'.
|
||||||
|
(ip-core-name): the name of the ip block (given after the BEGIN
|
||||||
|
directive in system.mhs). Should be in lowercase
|
||||||
|
and all underscores '_' converted to dashes '-'.
|
||||||
|
(name): is derived from the "PARAMETER INSTANCE" value.
|
||||||
|
(parameter#): C_* parameters from system.mhs. The C_ prefix is
|
||||||
|
dropped from the parameter name, the name is converted
|
||||||
|
to lowercase and all underscore '_' characters are
|
||||||
|
converted to dashes '-'.
|
||||||
|
(baseaddr): the baseaddr parameter value (often named C_BASEADDR).
|
||||||
|
(HW_VER): from the HW_VER parameter.
|
||||||
|
(size): the address range size (often C_HIGHADDR - C_BASEADDR + 1).
|
||||||
|
|
||||||
|
Typically, the compatible list will include the exact IP core version
|
||||||
|
followed by an older IP core version which implements the same
|
||||||
|
interface or any other device with the same interface.
|
||||||
|
|
||||||
|
'reg', 'interrupt-parent' and 'interrupts' are all optional properties.
|
||||||
|
|
||||||
|
For example, the following block from system.mhs:
|
||||||
|
|
||||||
|
BEGIN opb_uartlite
|
||||||
|
PARAMETER INSTANCE = opb_uartlite_0
|
||||||
|
PARAMETER HW_VER = 1.00.b
|
||||||
|
PARAMETER C_BAUDRATE = 115200
|
||||||
|
PARAMETER C_DATA_BITS = 8
|
||||||
|
PARAMETER C_ODD_PARITY = 0
|
||||||
|
PARAMETER C_USE_PARITY = 0
|
||||||
|
PARAMETER C_CLK_FREQ = 50000000
|
||||||
|
PARAMETER C_BASEADDR = 0xEC100000
|
||||||
|
PARAMETER C_HIGHADDR = 0xEC10FFFF
|
||||||
|
BUS_INTERFACE SOPB = opb_7
|
||||||
|
PORT OPB_Clk = CLK_50MHz
|
||||||
|
PORT Interrupt = opb_uartlite_0_Interrupt
|
||||||
|
PORT RX = opb_uartlite_0_RX
|
||||||
|
PORT TX = opb_uartlite_0_TX
|
||||||
|
PORT OPB_Rst = sys_bus_reset_0
|
||||||
|
END
|
||||||
|
|
||||||
|
becomes the following device tree node:
|
||||||
|
|
||||||
|
opb_uartlite_0: serial@ec100000 {
|
||||||
|
device_type = "serial";
|
||||||
|
compatible = "xlnx,opb-uartlite-1.00.b";
|
||||||
|
reg = <ec100000 10000>;
|
||||||
|
interrupt-parent = <&opb_intc_0>;
|
||||||
|
interrupts = <1 0>; // got this from the opb_intc parameters
|
||||||
|
current-speed = <d#115200>; // standard serial device prop
|
||||||
|
clock-frequency = <d#50000000>; // standard serial device prop
|
||||||
|
xlnx,data-bits = <8>;
|
||||||
|
xlnx,odd-parity = <0>;
|
||||||
|
xlnx,use-parity = <0>;
|
||||||
|
};
|
||||||
|
|
||||||
|
Some IP cores actually implement 2 or more logical devices. In
|
||||||
|
this case, the device should still describe the whole IP core with
|
||||||
|
a single node and add a child node for each logical device. The
|
||||||
|
ranges property can be used to translate from parent IP-core to the
|
||||||
|
registers of each device. In addition, the parent node should be
|
||||||
|
compatible with the bus type 'xlnx,compound', and should contain
|
||||||
|
#address-cells and #size-cells, as with any other bus. (Note: this
|
||||||
|
makes the assumption that both logical devices have the same bus
|
||||||
|
binding. If this is not true, then separate nodes should be used
|
||||||
|
for each logical device). The 'cell-index' property can be used to
|
||||||
|
enumerate logical devices within an IP core. For example, the
|
||||||
|
following is the system.mhs entry for the dual ps2 controller found
|
||||||
|
on the ml403 reference design.
|
||||||
|
|
||||||
|
BEGIN opb_ps2_dual_ref
|
||||||
|
PARAMETER INSTANCE = opb_ps2_dual_ref_0
|
||||||
|
PARAMETER HW_VER = 1.00.a
|
||||||
|
PARAMETER C_BASEADDR = 0xA9000000
|
||||||
|
PARAMETER C_HIGHADDR = 0xA9001FFF
|
||||||
|
BUS_INTERFACE SOPB = opb_v20_0
|
||||||
|
PORT Sys_Intr1 = ps2_1_intr
|
||||||
|
PORT Sys_Intr2 = ps2_2_intr
|
||||||
|
PORT Clkin1 = ps2_clk_rx_1
|
||||||
|
PORT Clkin2 = ps2_clk_rx_2
|
||||||
|
PORT Clkpd1 = ps2_clk_tx_1
|
||||||
|
PORT Clkpd2 = ps2_clk_tx_2
|
||||||
|
PORT Rx1 = ps2_d_rx_1
|
||||||
|
PORT Rx2 = ps2_d_rx_2
|
||||||
|
PORT Txpd1 = ps2_d_tx_1
|
||||||
|
PORT Txpd2 = ps2_d_tx_2
|
||||||
|
END
|
||||||
|
|
||||||
|
It would result in the following device tree nodes:
|
||||||
|
|
||||||
|
opb_ps2_dual_ref_0: opb-ps2-dual-ref@a9000000 {
|
||||||
|
#address-cells = <1>;
|
||||||
|
#size-cells = <1>;
|
||||||
|
compatible = "xlnx,compound";
|
||||||
|
ranges = <0 a9000000 2000>;
|
||||||
|
// If this device had extra parameters, then they would
|
||||||
|
// go here.
|
||||||
|
ps2@0 {
|
||||||
|
compatible = "xlnx,opb-ps2-dual-ref-1.00.a";
|
||||||
|
reg = <0 40>;
|
||||||
|
interrupt-parent = <&opb_intc_0>;
|
||||||
|
interrupts = <3 0>;
|
||||||
|
cell-index = <0>;
|
||||||
|
};
|
||||||
|
ps2@1000 {
|
||||||
|
compatible = "xlnx,opb-ps2-dual-ref-1.00.a";
|
||||||
|
reg = <1000 40>;
|
||||||
|
interrupt-parent = <&opb_intc_0>;
|
||||||
|
interrupts = <3 0>;
|
||||||
|
cell-index = <0>;
|
||||||
|
};
|
||||||
|
};
|
||||||
|
|
||||||
|
Also, the system.mhs file defines bus attachments from the processor
|
||||||
|
to the devices. The device tree structure should reflect the bus
|
||||||
|
attachments. Again an example; this system.mhs fragment:
|
||||||
|
|
||||||
|
BEGIN ppc405_virtex4
|
||||||
|
PARAMETER INSTANCE = ppc405_0
|
||||||
|
PARAMETER HW_VER = 1.01.a
|
||||||
|
BUS_INTERFACE DPLB = plb_v34_0
|
||||||
|
BUS_INTERFACE IPLB = plb_v34_0
|
||||||
|
END
|
||||||
|
|
||||||
|
BEGIN opb_intc
|
||||||
|
PARAMETER INSTANCE = opb_intc_0
|
||||||
|
PARAMETER HW_VER = 1.00.c
|
||||||
|
PARAMETER C_BASEADDR = 0xD1000FC0
|
||||||
|
PARAMETER C_HIGHADDR = 0xD1000FDF
|
||||||
|
BUS_INTERFACE SOPB = opb_v20_0
|
||||||
|
END
|
||||||
|
|
||||||
|
BEGIN opb_uart16550
|
||||||
|
PARAMETER INSTANCE = opb_uart16550_0
|
||||||
|
PARAMETER HW_VER = 1.00.d
|
||||||
|
PARAMETER C_BASEADDR = 0xa0000000
|
||||||
|
PARAMETER C_HIGHADDR = 0xa0001FFF
|
||||||
|
BUS_INTERFACE SOPB = opb_v20_0
|
||||||
|
END
|
||||||
|
|
||||||
|
BEGIN plb_v34
|
||||||
|
PARAMETER INSTANCE = plb_v34_0
|
||||||
|
PARAMETER HW_VER = 1.02.a
|
||||||
|
END
|
||||||
|
|
||||||
|
BEGIN plb_bram_if_cntlr
|
||||||
|
PARAMETER INSTANCE = plb_bram_if_cntlr_0
|
||||||
|
PARAMETER HW_VER = 1.00.b
|
||||||
|
PARAMETER C_BASEADDR = 0xFFFF0000
|
||||||
|
PARAMETER C_HIGHADDR = 0xFFFFFFFF
|
||||||
|
BUS_INTERFACE SPLB = plb_v34_0
|
||||||
|
END
|
||||||
|
|
||||||
|
BEGIN plb2opb_bridge
|
||||||
|
PARAMETER INSTANCE = plb2opb_bridge_0
|
||||||
|
PARAMETER HW_VER = 1.01.a
|
||||||
|
PARAMETER C_RNG0_BASEADDR = 0x20000000
|
||||||
|
PARAMETER C_RNG0_HIGHADDR = 0x3FFFFFFF
|
||||||
|
PARAMETER C_RNG1_BASEADDR = 0x60000000
|
||||||
|
PARAMETER C_RNG1_HIGHADDR = 0x7FFFFFFF
|
||||||
|
PARAMETER C_RNG2_BASEADDR = 0x80000000
|
||||||
|
PARAMETER C_RNG2_HIGHADDR = 0xBFFFFFFF
|
||||||
|
PARAMETER C_RNG3_BASEADDR = 0xC0000000
|
||||||
|
PARAMETER C_RNG3_HIGHADDR = 0xDFFFFFFF
|
||||||
|
BUS_INTERFACE SPLB = plb_v34_0
|
||||||
|
BUS_INTERFACE MOPB = opb_v20_0
|
||||||
|
END
|
||||||
|
|
||||||
|
Gives this device tree (some properties removed for clarity):
|
||||||
|
|
||||||
|
plb@0 {
|
||||||
|
#address-cells = <1>;
|
||||||
|
#size-cells = <1>;
|
||||||
|
compatible = "xlnx,plb-v34-1.02.a";
|
||||||
|
device_type = "ibm,plb";
|
||||||
|
ranges; // 1:1 translation
|
||||||
|
|
||||||
|
plb_bram_if_cntrl_0: bram@ffff0000 {
|
||||||
|
reg = <ffff0000 10000>;
|
||||||
|
}
|
||||||
|
|
||||||
|
opb@20000000 {
|
||||||
|
#address-cells = <1>;
|
||||||
|
#size-cells = <1>;
|
||||||
|
ranges = <20000000 20000000 20000000
|
||||||
|
60000000 60000000 20000000
|
||||||
|
80000000 80000000 40000000
|
||||||
|
c0000000 c0000000 20000000>;
|
||||||
|
|
||||||
|
opb_uart16550_0: serial@a0000000 {
|
||||||
|
reg = <a00000000 2000>;
|
||||||
|
};
|
||||||
|
|
||||||
|
opb_intc_0: interrupt-controller@d1000fc0 {
|
||||||
|
reg = <d1000fc0 20>;
|
||||||
|
};
|
||||||
|
};
|
||||||
|
};
|
||||||
|
|
||||||
|
That covers the general approach to binding xilinx IP cores into the
|
||||||
|
device tree. The following are bindings for specific devices:
|
||||||
|
|
||||||
|
i) Xilinx ML300 Framebuffer
|
||||||
|
|
||||||
|
Simple framebuffer device from the ML300 reference design (also on the
|
||||||
|
ML403 reference design as well as others).
|
||||||
|
|
||||||
|
Optional properties:
|
||||||
|
- resolution = <xres yres> : pixel resolution of framebuffer. Some
|
||||||
|
implementations use a different resolution.
|
||||||
|
Default is <d#640 d#480>
|
||||||
|
- virt-resolution = <xvirt yvirt> : Size of framebuffer in memory.
|
||||||
|
Default is <d#1024 d#480>.
|
||||||
|
- rotate-display (empty) : rotate display 180 degrees.
|
||||||
|
|
||||||
|
ii) Xilinx SystemACE
|
||||||
|
|
||||||
|
The Xilinx SystemACE device is used to program FPGAs from an FPGA
|
||||||
|
bitstream stored on a CF card. It can also be used as a generic CF
|
||||||
|
interface device.
|
||||||
|
|
||||||
|
Optional properties:
|
||||||
|
- 8-bit (empty) : Set this property for SystemACE in 8 bit mode
|
||||||
|
|
||||||
|
iii) Xilinx EMAC and Xilinx TEMAC
|
||||||
|
|
||||||
|
Xilinx Ethernet devices. In addition to general xilinx properties
|
||||||
|
listed above, nodes for these devices should include a phy-handle
|
||||||
|
property, and may include other common network device properties
|
||||||
|
like local-mac-address.
|
||||||
|
|
||||||
|
iv) Xilinx Uartlite
|
||||||
|
|
||||||
|
Xilinx uartlite devices are simple fixed speed serial ports.
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
- current-speed : Baud rate of uartlite
|
||||||
|
|
||||||
|
v) Xilinx hwicap
|
||||||
|
|
||||||
|
Xilinx hwicap devices provide access to the configuration logic
|
||||||
|
of the FPGA through the Internal Configuration Access Port
|
||||||
|
(ICAP). The ICAP enables partial reconfiguration of the FPGA,
|
||||||
|
readback of the configuration information, and some control over
|
||||||
|
'warm boots' of the FPGA fabric.
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
- xlnx,family : The family of the FPGA, necessary since the
|
||||||
|
capabilities of the underlying ICAP hardware
|
||||||
|
differ between different families. May be
|
||||||
|
'virtex2p', 'virtex4', or 'virtex5'.
|
||||||
|
|
||||||
|
vi) Xilinx Uart 16550
|
||||||
|
|
||||||
|
Xilinx UART 16550 devices are very similar to the NS16550 but with
|
||||||
|
different register spacing and an offset from the base address.
|
||||||
|
|
||||||
|
Required properties:
|
||||||
|
- clock-frequency : Frequency of the clock input
|
||||||
|
- reg-offset : A value of 3 is required
|
||||||
|
- reg-shift : A value of 2 is required
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -253,6 +253,7 @@
|
||||||
/* Filled in by U-Boot */
|
/* Filled in by U-Boot */
|
||||||
clock-frequency = <0>;
|
clock-frequency = <0>;
|
||||||
status = "disabled";
|
status = "disabled";
|
||||||
|
sdhci,1-bit-only;
|
||||||
};
|
};
|
||||||
|
|
||||||
crypto@30000 {
|
crypto@30000 {
|
||||||
|
|
|
||||||
|
|
@ -598,8 +598,6 @@ typedef struct risc_timer_pram {
|
||||||
#define CICR_IEN ((uint)0x00000080) /* Int. enable */
|
#define CICR_IEN ((uint)0x00000080) /* Int. enable */
|
||||||
#define CICR_SPS ((uint)0x00000001) /* SCC Spread */
|
#define CICR_SPS ((uint)0x00000001) /* SCC Spread */
|
||||||
|
|
||||||
#define IMAP_ADDR (get_immrbase())
|
|
||||||
|
|
||||||
#define CPM_PIN_INPUT 0
|
#define CPM_PIN_INPUT 0
|
||||||
#define CPM_PIN_OUTPUT 1
|
#define CPM_PIN_OUTPUT 1
|
||||||
#define CPM_PIN_PRIMARY 0
|
#define CPM_PIN_PRIMARY 0
|
||||||
|
|
|
||||||
|
|
@ -285,6 +285,7 @@ static struct of_device_id mpc85xx_ids[] = {
|
||||||
{ .type = "qe", },
|
{ .type = "qe", },
|
||||||
{ .compatible = "fsl,qe", },
|
{ .compatible = "fsl,qe", },
|
||||||
{ .compatible = "gianfar", },
|
{ .compatible = "gianfar", },
|
||||||
|
{ .compatible = "fsl,rapidio-delta", },
|
||||||
{},
|
{},
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -52,20 +52,19 @@ smp_85xx_kick_cpu(int nr)
|
||||||
|
|
||||||
pr_debug("smp_85xx_kick_cpu: kick CPU #%d\n", nr);
|
pr_debug("smp_85xx_kick_cpu: kick CPU #%d\n", nr);
|
||||||
|
|
||||||
local_irq_save(flags);
|
|
||||||
|
|
||||||
np = of_get_cpu_node(nr, NULL);
|
np = of_get_cpu_node(nr, NULL);
|
||||||
cpu_rel_addr = of_get_property(np, "cpu-release-addr", NULL);
|
cpu_rel_addr = of_get_property(np, "cpu-release-addr", NULL);
|
||||||
|
|
||||||
if (cpu_rel_addr == NULL) {
|
if (cpu_rel_addr == NULL) {
|
||||||
printk(KERN_ERR "No cpu-release-addr for cpu %d\n", nr);
|
printk(KERN_ERR "No cpu-release-addr for cpu %d\n", nr);
|
||||||
local_irq_restore(flags);
|
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Map the spin table */
|
/* Map the spin table */
|
||||||
bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY);
|
bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY);
|
||||||
|
|
||||||
|
local_irq_save(flags);
|
||||||
|
|
||||||
out_be32(bptr_vaddr + BOOT_ENTRY_PIR, nr);
|
out_be32(bptr_vaddr + BOOT_ENTRY_PIR, nr);
|
||||||
out_be32(bptr_vaddr + BOOT_ENTRY_ADDR_LOWER, __pa(__early_start));
|
out_be32(bptr_vaddr + BOOT_ENTRY_ADDR_LOWER, __pa(__early_start));
|
||||||
|
|
||||||
|
|
@ -73,10 +72,10 @@ smp_85xx_kick_cpu(int nr)
|
||||||
while ((__secondary_hold_acknowledge != nr) && (++n < 1000))
|
while ((__secondary_hold_acknowledge != nr) && (++n < 1000))
|
||||||
mdelay(1);
|
mdelay(1);
|
||||||
|
|
||||||
iounmap(bptr_vaddr);
|
|
||||||
|
|
||||||
local_irq_restore(flags);
|
local_irq_restore(flags);
|
||||||
|
|
||||||
|
iounmap(bptr_vaddr);
|
||||||
|
|
||||||
pr_debug("waited %d msecs for CPU #%d.\n", n, nr);
|
pr_debug("waited %d msecs for CPU #%d.\n", n, nr);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -102,10 +102,11 @@ static struct of_device_id __initdata socrates_of_bus_ids[] = {
|
||||||
{},
|
{},
|
||||||
};
|
};
|
||||||
|
|
||||||
static void __init socrates_init(void)
|
static int __init socrates_publish_devices(void)
|
||||||
{
|
{
|
||||||
of_platform_bus_probe(NULL, socrates_of_bus_ids, NULL);
|
return of_platform_bus_probe(NULL, socrates_of_bus_ids, NULL);
|
||||||
}
|
}
|
||||||
|
machine_device_initcall(socrates, socrates_publish_devices);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Called very early, device-tree isn't unflattened
|
* Called very early, device-tree isn't unflattened
|
||||||
|
|
@ -124,7 +125,6 @@ define_machine(socrates) {
|
||||||
.name = "Socrates",
|
.name = "Socrates",
|
||||||
.probe = socrates_probe,
|
.probe = socrates_probe,
|
||||||
.setup_arch = socrates_setup_arch,
|
.setup_arch = socrates_setup_arch,
|
||||||
.init = socrates_init,
|
|
||||||
.init_IRQ = socrates_pic_init,
|
.init_IRQ = socrates_pic_init,
|
||||||
.get_irq = mpic_get_irq,
|
.get_irq = mpic_get_irq,
|
||||||
.restart = fsl_rstcr_restart,
|
.restart = fsl_rstcr_restart,
|
||||||
|
|
|
||||||
|
|
@ -32,7 +32,6 @@
|
||||||
|
|
||||||
#include <sysdev/fsl_soc.h>
|
#include <sysdev/fsl_soc.h>
|
||||||
#include <sysdev/fsl_pci.h>
|
#include <sysdev/fsl_pci.h>
|
||||||
#include <linux/of_platform.h>
|
|
||||||
|
|
||||||
/* A few bit definitions needed for fixups on some boards */
|
/* A few bit definitions needed for fixups on some boards */
|
||||||
#define MPC85xx_L2CTL_L2E 0x80000000 /* L2 enable */
|
#define MPC85xx_L2CTL_L2E 0x80000000 /* L2 enable */
|
||||||
|
|
|
||||||
|
|
@ -112,6 +112,7 @@ int qe_issue_cmd(u32 cmd, u32 device, u8 mcn_protocol, u32 cmd_input)
|
||||||
{
|
{
|
||||||
unsigned long flags;
|
unsigned long flags;
|
||||||
u8 mcn_shift = 0, dev_shift = 0;
|
u8 mcn_shift = 0, dev_shift = 0;
|
||||||
|
u32 ret;
|
||||||
|
|
||||||
spin_lock_irqsave(&qe_lock, flags);
|
spin_lock_irqsave(&qe_lock, flags);
|
||||||
if (cmd == QE_RESET) {
|
if (cmd == QE_RESET) {
|
||||||
|
|
@ -139,11 +140,13 @@ int qe_issue_cmd(u32 cmd, u32 device, u8 mcn_protocol, u32 cmd_input)
|
||||||
}
|
}
|
||||||
|
|
||||||
/* wait for the QE_CR_FLG to clear */
|
/* wait for the QE_CR_FLG to clear */
|
||||||
while(in_be32(&qe_immr->cp.cecr) & QE_CR_FLG)
|
ret = spin_event_timeout((in_be32(&qe_immr->cp.cecr) & QE_CR_FLG) == 0,
|
||||||
cpu_relax();
|
100, 0);
|
||||||
|
/* On timeout (e.g. failure), the expression will be false (ret == 0),
|
||||||
|
otherwise it will be true (ret == 1). */
|
||||||
spin_unlock_irqrestore(&qe_lock, flags);
|
spin_unlock_irqrestore(&qe_lock, flags);
|
||||||
|
|
||||||
return 0;
|
return ret == 1;
|
||||||
}
|
}
|
||||||
EXPORT_SYMBOL(qe_issue_cmd);
|
EXPORT_SYMBOL(qe_issue_cmd);
|
||||||
|
|
||||||
|
|
|
||||||
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